HTN Patients Research Articles

Abstract P363: Prevelance of Hypertension in Kidney Transplant Recepients as Determined by Ambulatory BP Monitoring (ABPM)

Background: Cardiovascular disease remains the most common cause of death among kidney transplant recipients, with hypertension being one of the most prevalent risk factors. Understanding the current prevalence of hypertension in this population is critical to help shape post-transplant care policies and guidelines and ensure proper management of CVD risk. Methods: We included all kidney transplant recipients who received their transplant between 2019 and 2023 at our center and who completed 24-hour ABPM at 12 months post-transplant. We reported data in mean (SD) unless noted otherwise. BP was categorized per AHA guidelines. This study was deemed exempt by the IRB. Results: A total of 940 patients were included in this study. Detailed results are seen in Figure 1 and Table 1. Notable to mention that 60% of the patients had blood pressure > 130/80 mmHg at 12 months post kidney transplant, with the majority being stage 1. Patients with more severe hypertension tended to be older, had lower eGFR, and had more comorbidities. They also had lower diastolic blood pressure than stage 1 HTN patients, consistent with older age. Night-time BP was significantly higher among stage 2 HTN patients. Conclusion: Hypertension remains a prevalent condition post-kidney transplant despite the majority of patients having satisfactory kidney allograft function. Ongoing BP monitoring and assessment of out-of-office BP post-kidney transplantation is critical to ensure control of this important cardiovascular risk factor. 24-hour ABPM has several advantages in this group, including accurate measurement of out-of-office BP and detection of nocturnal hypertension, an independent risk factor for cardiovascular events. Additional studies are needed to describe the hypertension subphenotypes (e.g., sustained vs. masked) and to identify predictors of severe uncontrolled hypertension in this patient population.

O61 HYPERTENSION IN COLOMBIA: ETHNIC GROUP COMPARISONS IN CHARACTERIZATION AND SURVIVAL

Background and objective: Research has shown that ethnic minorities may be disproportionately affected by arterial hypertension. The aim of this study is to compare the overall survival (OS) HTN patients within the Colombian health system, by their ethnic group. Methods: Design: Longitudinal retrospective cohort study. Population: Adults diagnosed with HTN from June 1, 2014, to July 30, 2015, from the National Registry of Chronic Kidney Disease (NRCKD). The follow-up period was until July 30, 2023. Analysis: The probability of global survival from the date of diagnosis was estimated using Kaplan-Meier analysis. An unadjusted Royston Parmar flexible regression model was fitted. Right-censoring was defined as abandonment or completion of follow-up without death occurring. Results: 5,634,812 cases were identified from june 1st 2022 to july 30th 2023, and 299,161 incident cases were included in the survival analysis. 95.29% had no ethnic group, 1.20% were indigenous, 3.47% were Afro-descendant and 0.03% were Gypsy (ROMA). ROMA group had a higher proportion of residents in Bogotá, D.C. compared to other groups (13.96% vs ∼3%). Afro-descendant group had a higher proportion of obesity (30.61% vs. 27.86%) and diagnosis of Chronic Kidney Disease (27.31% vs. 15.69%) compared to cases with no ethnic group, while ROMA group had a higher occurrence of DM cases (23.46% vs. 21.66%). 9 years OS was higher in ROMA group (OS = 0.85; CI 95% 0.71 – 0.93) compared to indigenous (OS = 0.83; CI 95% 0.81 – 0.84) and afro-descendants (OS = 0.83; CI 95% 0.83 – 0.84). The probability of all-cause mortality was approximately 20% higher among afro-descendants and indigenous people (HR = 1.20; 95% CI 1.14 – 1.25 and HR = 1.22; 95% CI 1.12 – 1.32, respectively) compared to the non-ethnic group. In contrast, the ROMA did not present differences (p = 0.712). Conclusions: In the Colombian health system, differences in OS among afro-descendant and indigenous groups are observed compared to non-ethnic population.

Myocardial hypertrophy: the differentiation of uremic, hypertensive, and hypertrophic cardiomyopathies by cardiac MRI

ObjectivesTo apply cardiac magnetic resonance imaging (CMR) for detailed myocardial characterization in uremic cardiomyopathy (UC), hypertensive cardiomyopathy (HTN), and hypertrophic cardiomyopathy (HCM) aiming to enrich the understanding of UC’s etiology and further support the development of therapeutic strategies.MethodsA total of 152 patients (age: 49.2 ± 9.9 years; 65.8% male) underwent routine CMR from June 2016 to March 2023. Retrospectively, 53 patients with UC, 39 patients with HTN, 30 patients with HCM, and 30 healthy controls were included. Functional analysis, feature tracking of the left ventricle and left atrium, and myocardial T1, T2, and T2* mapping were performed. Statistical analysis included Pearson correlation and ROC analysis to define correlations and discriminators between groups.ResultsUC patients demonstrated significantly higher native T1 (p < 0.001 for all) and T2 (p < 0.002 for all) values compared with the other three groups. UC patients revealed higher left atrial reservoir strain rate (p < 0.001 for all) and left atrial conduit strain rate (p < 0.001 for all) absolute values as compared with HTN and HCM patients. A significant correlation between T1 and T2 values in UC patients (r = 0.511, p < 0.001) was found. The combination of T1 values and strain parameters was the best discriminator between UC and HTN patients (AUC = 0.872, 95% CI: 0.801–0.943) and between UC and HCM patients (AUC = 0.840, 95% CI: 0.746–0.934).ConclusionUC reveals distinguishing tissue characteristics as evidenced by T1 and T2 mapping, as well as distinguishing functional strain parameters as compared with other hypertrophic phenotypes such as HTN and HCM.Critical relevance statementThe use of CMR imaging in UC patients offers incremental information to elucidate its complex etiology, contributing to ongoing discourse on effective treatment pathways.Key PointsThis study investigated uremic, hypertensive, and hypertrophic cardiomyopathies using cardiac MRI.UC patients have higher T1 and T2 values and better preserved cardiac function.Combined strain and T1 values distinguish UC from other cardiomyopathies.Graphical

A Systematic Review of Banded vs. Non-Banded Sleeve Gastrectomy Regarding Long Term Results

Abstract Background Laparoscopic Non-Banded Sleeve Gastrectomy (NBSG) is a widely popular weight loss procedure that has been around since the start of the millennium. Another variant, the Laparoscopic Banded Sleeve Gastrectomy (LBSG) started to emerge later. Questions have arisen on whether NBSG or BSG have better outcomes on the long run regarding weight loss, weight regain and reflux disease. This study aims to analyse previous studies performed on this subject and devise a conclusion regarding this matter. Obesity is a worldwide health issue with an unfortunate impact on an individual‘s quality of life. As of 2016, 39% of the world population suffered from obesity. Bariatric surgery is currently considered to be an effective and sustainable solution with increasing worldwide prevalence. Laparoscopic sleeve gastrectomy was first performed as the first step in biliopancreatic diversion with duodenal switch. Objective To scrutinize all English language papers written on the subject of comparing NBSG and LBSG as primary bariatric procedures and furthermore seeks to determine the superior surgery between them regarding weight loss, post-operative morbidity and complications like regurgitation, vomiting, reflux, dysphagia, and finally resolution of comorbidities like T2DM and HTN. Methodology This systematic review was carried out according to the updated PRISMA 2020 statement. A thorough search was executed in the Medline (PubMed) database, Elsevier‘s Scopus, Web of Science and the Cochrane Library in December 2022. Search was restricted to articles written in English. Search terms will be broad to encompass Banded Sleeve procedures. Results Our review revealed that the existing literature suggests increased weight loss following LBSG compared to NBSG; however, there‘s an increased risk of regular regurgitation episodes and of device related complications leading to revision surgeries (such as band removal). Data Sources Medline databases (PubMed, Medscape, ScienceDirect. EMF-Portal) and all materials available in the Internet till 2023. Conclusion Laparoscopic banded sleeve gastrectomy provides apparent better outcomes than non- banded sleeve gastrectomy regarding sustainable weight loss results through 3-5 years of follow up as the studies we reviewed had demonstrated. Nonetheless, it poses a definite increase in the risk of regurgitation, vomiting and ring related complications that might require revision surgeries. More RCTs with longer follow up periods (&amp;gt;5 years) will significantly add to our understanding of the matter. Larger LBSG sample sizes are needed to further enhance our impression on efficacy and safety of the banded sleeve gastrectomy. Finally, larger T2DM and HTN patients‘ sample size is needed to form a conclusion on the relationship between banding and the resolution of these diseases.

ACE gene polymorphism and susceptibility to hypertension in a Jordanian adult population.

Hypertension is one of the most common and complicated disorders associated with genetic and environmental risk factors. The angiotensin-converting enzyme (ACE) is important in the renin-angiotensin-system pathway. The gene expression of ACE has been investigated as a possible hypertension marker. This study investigates the association between polymorphisms within the ACE1 and ACE2 genes and hypertension susceptibility in a Jordanian population. The study comprised a total of 200 hypertensive patients and 180 healthy controls. A polymerase chain reaction (PCR) was performed to genotype the candidate polymorphism (rs4646994) of the ACE1gene. The Luminex DNA array technique was used for genotyping SNPs (rs4359, rs4344, rs4341, rs4343, and rs2106809) of the ACE1 and ACE2 genes. Our findings suggest no association between SNPs and hypertension regarding allelic and genotypic frequencies. However, rs4359 was significantly associated with diet (pP = 0.049), know HTN (P = 0.042), and number of years DM (P = 0.003). rs4341 was associated with diet (P = 0.032), peripheral vascular disease (P = 0.005), and chronic kidney disease (p = 0.049). While rs4343 was associated with diet (P = 0.031), diabetes mellitus (P = 0.032), and other medication (P = 0.025). Furthermore, the haplotypes of four SNPs of the ACE1 gene showed no significant association with HTN patients and healthy controls. Our findings indicate no association between the polymorphisms in the ACE gene and the risk of hypertension development in the Jordanian adult population.

Evaluation of Serum Electrolyte Abnormalities and Kidney Function to Assess Risk of Kidney Disease in Hypertensive Patients at Kenyatta National Hospital

HTN is a known leading cause of kidney disease with over 20% of the population aged 20 years or older with HTN developing CKD. Complications from HTN and kidney disease contribute significantly to global mortality. In Kenya, data from WHO shows that about 4 million individuals suffer from CKD, with many progressing to kidney failure. The aim was to assess serum electrolyte abnormalities and kidney function among hypertensive patients at KNH. The study utilized cross-sectional retrospective data from KNH patient records. The CKD-EPI equation was used to calculate eGFR. Fisher et al.’s equation determined sample size. Data were stratified by variables such as DBP, age, sex, SBP, proteinuria, serum creatinine, urea levels, serum electrolytes, and eGFR. Data collection involved 189 patients: 82 males (43.4%) and 107 females (56.6%), with a median age of 54.00 years. 93 patients (49.20%) were &lt;54 years and 96 (50.80%) were ≥54 years. 78.84% of HTN patients had abnormal serum creatinine levels, and 54.5% had abnormal serum urea levels. 58.7% showed proteinuria. Elevated sodium levels (&gt;145 mmol/l) affected 39.68% of patients, while reduced potassium levels (&lt;3.5 mmol/l) were found in 15.34%. 41.27% had elevated chloride levels above 106 mmol/l. CKD stages varied: 3.2% had G1, 17.5% had G2, 14.8% had G3a, 29.1% had G3b, 16.4% had G4, and 19.0% had G5. Reduced renal function, estimated using GFR, was prevalent among hypertensive patients (79.4%) (95% CI:72.9-82.9), notably those ≥54 years. In conclusion, the risk of progressive kidney disease was high amongst hypertensive patients and this was evident from the proportion of patients who have abnormal kidney function including proteinuria. Early screening and implementation of therapeutic strategies can improve patient’s quality of life.

A national study exploring the association between triglyceride-glucose index and risk of hyperuricemia events in adults with hypertension

BackgroundThe triglyceride-glucose (TyG) index has been recommended as a practical surrogate of insulin resistance (IR). However, the association between the TyG index and hyperuricemia among adults with hypertension remains to be elucidated. MethodsWe included and analyzed 3134 HTN patients and 4233 non-HTN participants from the cross-sectional 2013–2018 U.S. National Health and Nutrition Examination Surveys (NHANES). Multivariable logistic regression and restricted cubic splines (RCS) were used to explore the association between the TyG index and hyperuricemia. Stratifed analyses were performed to assess the association in populations with different subgroups of hypertension. ResultsThe prevalence of hyperuricemia was higher in HTN patients (28.00 %) than in non-HTN participants (12.47 %). The multivariable logistic regression showed that the TyG index was significantly associated with hyperuricemia. After multivariable adjustment, higher TyG index levels were found to be associated with a higher prevalence of hyperuricemia in HTN patients (OR: 2.39, 95 % CI: 1.37–4.17, Ptrend < 0.001) and non-HTN participants (OR: 2.61, 95 % CI: 1.45–4.69, Ptrend < 0.001). Restricted cubic spline regression showed linearity of the associations between the TyG index and hyperuricemia (p-nonlinear > 0.05). In the subgroup analysis suggested that the positive association seemed to be strong among male, alcohol use, and diabetes group (P for interaction < 0.05). ConclusionsTyG index, a practical surrogate of IR, was linearly and positively associated with hyperuricemia in HTN and non-HTN participants. Proactive measures are needed to prevent the comorbidity of IR-driven hyperuricemia in the future.

Guidelines-based therapeutic strategies for controlling hypertension in non-controlled hypertensive patients followed by family physicians in primary health care in Portugal: the GPHT-PT study

Purpose In a prospective open study, with intervention, conducted in Primary Health Care Units by General Practitioners (GPs) in Portugal, the effectiveness of a single pill of candesartan/amlodipine (ARB/amlodipine), as the only anti-hypertension (anti-HTN) medication, in adult patients with uncontrolled HTN (BP > 140/or > 90 mm Hg), either previously being treated with anti-HTN monotherapies (Group I), or combinations with hydrochlorothiazide (HCTZ) (Group II), or not receiving medication at all (Group III), was evaluated across 12-weeks after implementation of the new therapeutic measure. Materials and methods A total of 118 GPs recruited patients with uncontrolled HTN who met inclusion/exclusion criteria. Participants were assigned, according to severity, one of 3 (morning) fixed combination candesartan/amlodipine dosage (8/5 or 16/5 or 16/10 mg/day) and longitudinally evaluated in 3 visits (v0, v6 and v12 weeks). Office blood pressure was measured in each visit, and control of HTN was defined per guidelines (BP< 140/90 mmHg). Results Of the 1234 patients approached, 752 (age 61 ± 10 years, 52% women) participated in the study and were assigned to groups according to previous treatment conditions. The 3 groups exhibited a statistically significant increased control of blood pressure after receiving the fixed combination candesartan/amlodipine dosage. The overall proportion of controlled HTN participants increased from 0,8% at v0 to 82% at v12. The mean arterial blood pressure values decreased from SBP= 159.0 (± 13.0) and DBP= 91.1 (± 9.6) at baseline to SBP= 132,1 (± 11.3) and DBP= 77,5 (± 8.8) at 12 weeks (p < 0.01). Results remained consistent when controlling for age and sex. Conclusion In patients with uncontrolled HTN, therapeutic measures in accordance with guidelines, with a fixed combination candesartan/amlodipine, allowed to overall achieve HTN control at 12 weeks in 82% of previously uncontrolled HTN patients, reinforcing the advantages of these strategies in primary clinical practice.

A tryst of ‘blood pressure control- sex- comorbidities’: the odyssey of basic public health services in Yunnan in quest for truth

BackgroundThe Basic Public Health Service (BPHS), a recently announced free healthcare program, aims to combat the most prevalent Noncommunicable Disease-“Hypertension” (HTN)-and its risk factors on a nationwide scale. In China, there is a rife that HTN less impacts women during their lifetime. We, therefore, aimed to evaluate the sex disparity in hypertension patients with comorbidities among south-west Chinese and the contribution of BPHS to address that concern.MethodsWe have opted for a multistage stratified random sampling method to enroll hypertensive patients of 35 years and older, divided them into BPHS and non-BPHS groups. We assessed the sex disparity in HTN patients with four major comorbidities- Dyslipidemia, Diabetes Mellitus (DM), Cardiovascular Disease (CVD), and Chronic Kidney Disease (CKD), and descriptive data were compiled. Odds ratios from logistic regression models estimated the effectiveness of BPHS in the management of HTN with comorbidities.ResultsAmong 1521 hypertensive patients,1011(66.5%) were managed in the BPHS group. The proportion of patients who had at least one comorbidity was 70.7% (95% confidence interval [CI]: 66.3-76.8%), patients aged 65 years and older were more likely to have coexisting comorbidities. Participants who received the BPHS showed significant blood pressure (BP) control with two comorbidities (odds ratio [OR] = 2.414, 95% CI: 1.276–4.570), three or more (OR = 5.500, 95%CI: 1.174–25.756). Patients with dyslipidemia and DM also benefited from BPHS in controlling BP (OR = 2.169, 95% CI: 1.430–3.289) and (OR = 2.785, 95%CI: 1.242–6.246), respectively. In certain high-income urban survey centers, there was sex differences in the HTN management provided by BPHS, with men having better BP control rates than women.ConclusionsPerhaps this is the first study in China to succinctly show the effectiveness and sex disparity regarding “management of hypertensive comorbidities”. This supports that the BPHS program plays a pivotal role in controlling BP, therefore should recommend the national healthcare system to give women a foremost priority in BPHS, especially to those from low-socioeconomic and low-scientific literacy regions.

Osteopathic Cranial Manipulation and its Possible Application in Managing Hypertension for the Optimization of Care

Context: Approximately 50% of US adults suffer from hypertension, with over 75% inadequately controlled. The baroreceptor reflex elicits vagal stimulation, reducing heart rate and blood pressure. Non-invasive osteopathic cranial manipulation (OCM), including occipito-atlantal (OA) release, may enhance vagal tone. This literature review examines the potential efficacy of OCM in optimizing hypertension management by augmenting vagal tone and subsequently reducing blood pressure. Objective: To determine whether osteopathic cranial manipulation (OCM) may be utilized for blood pressure reduction and hypertension management via vagal nerve stimulation affecting the baroreceptor reflex. Specifically, we aim to investigate the effects occipito-atlantal (OA) release has on vagal tone and determine whether it has reasonable applications within hypertensive conditions. Methods: Our group searched for credible literature sources on Still OneSearch, DynaMed, Google Scholar, PubMed, MEDLINE, and National Institutes of Health (NIH) online databases as well as the following journals: Frontiers in Neuroscience, Journal of Alternative and Complementary Medicine, and Medicines. The search strategy included keywords or a combination of keywords such as “hypertension or high blood pressure”, “baroreceptor reflex”, “vagal nerve stimulation”, and “osteopathy or osteopathic manual therapy or OMT or manual therapy or osteopathic medicine or osteopathic treatment” to discover related articles. Filters for peer reviewed sources with access to full text and publication dates between 2010 - 2023 were applied to our search, narrowing the results to only the most up-to-date information. Once studies of interest were selected, the articles were read and analyzed with pertinent components referenced throughout our literature review in accordance with AMA citation format. Altogether, this project demonstrates osteopathic significance because it emphasizes the value of osteopathic cranial manipulation (OCM), spreads awareness of Sutherland’s philosophies, and underscores the possibility of OCM applications in the treatment of hypertension. Furthermore, it describes how OCM can be used in combination with or as a safer alternative to managing hypertensive conditions, thus creating more options for providing quality healthcare. Results: This literature review sought to examine the potential efficacy of HTN management through the utilization of osteopathic cranial manipulation. In the clinical and preclinical studies of vagus nerve stimulation (VNS) therapy, it was found that a 4-week-long VNS therapy significantly decreased mean arterial pressure and the number of arrhythmic episodes in rats with salt-induced hypertension, with a potential side effect being bradycardia due to asystole. In theory, by initiating manual biomechanical alignment in the OA joint would improve vagus nerve function and thus increase parasympathetic function to the heart to reduce atrial contraction, comparable to VNS. A study examining 19 healthy, young adults who underwent cervical OMT and had their heart rates measured pre- and post-electrocardiography, revealed moderate enhancement of parasympathetic HR control. In another study of 63 subjects with hypertension who were treated with OMT for 1 year, it was found that their systolic blood pressure improved significantly. In a randomized controlled study, a combination of kneading and stretching of soft tissues and suboccipital decompression, there is an increase of 15% of parasympathetic modulation of heart rate with p=0.02. Conclusion: Research agrees that the instigation of parasympathetic activity through vagal nerve stimulation adjusts heart rate in the response to baroreceptors that detect arterial pressure changes within the heart. Giles et al demonstrated a positive relationship between the effects of OMT and acute heart rate variability. However, the relationship between heart rate and vagal activity is not linear, and has been previously difficult to clearly denote. Overall, this literature review demonstrates the significant impact hypertension has on society and the need for alternative treatments. In research conducted by Giles et al, OMT was proven to have an effect on heart rate variability in health individuals and although the research was not conducted on patients with somatic dysfunction, the data suggests that the effect on heart rate via OMT is measurable and definitive. This lends to a promising advancement in the relationship between OMT and heart rate in a diseased population. Assessment of this change in the frequency domain of autonomic control suggests necessary evaluation of the shift in sympathetic to parasympathetic states within chronic HTN patients. In evaluation of current research, it is not possible to draw a definitive conclusion about the effectiveness of OCM on the management of HTN. Future research should be conducted in the evaluation of OCM and the specific types of techniques that offer the greatest effect on both heart rate and blood pressure. Ideally these projects would determine the effectiveness of OCM through a dedicated, well-designed, controlled and blinded outcome study for the evaluation of statistically significant results. The data that would be extracted from these future studies could have profound impacts on the integration of OMT into the scheme of hypertension management and inform policy changes to enable it as a viable tool for treatment.

Prevalence, awareness, treatment and control of high blood pressure in a cohort in Northern Andean Peru

ABSTRACT Background Gaps exist along the high blood pressure (HBP) diagnosis-treatment-control pathway in high, low and middle-income countries. Objective To determine the prevalence of HBP and to describe the levels of awareness, control and treatment of HBP in the rural Peruvian Andes. Methods This cross-sectional study is embedded into a multigenerational cohort. We analysed data of all adult participants aged ≥ 30 years (n = 2752) who answered a baseline health and lifestyle questionnaire and underwent a physical examination, which included three blood pressure readings. HBP was defined as measured systolic or diastolic blood pressure (BP) ≥140 and/or 90 mm Hg and/or self-reported physician-diagnosed hypertension and/or self-reported antihypertensive intake. The determinants of the prevalence of HBP, unawareness of HBP and uncontrolled HBP were assessed using mixed-effect logistic regressions. Results HBP was present in 18.9% of the participants. Of those with measured HBP, 72.2% were unaware of their HBP. Among those with a diagnosed or medically treated hypertension, 58.4% had uncontrolled HBP. The prevalence of HBP was higher in women (OR: 1.12, CI: 1.02–1.24), increased with age (OR: 1.01, CI: 1.01–1.01) and the presence of family history of hypertension (OR: 1.15, CI: 1.08–1.24), and decreased with healthier lifestyle score (OR: 0.93, CI: 0.91–0.95). Unawareness of HBP was lower among women (OR: 0.56, CI: 0.38–0.83), higher among participants living over 3000 m Above Sea Level (OR: 1.15, CI: 1.03–1.27) and decreased with age (OR: 0.99, CI: 0.98–0.99). Conclusions Unawareness of HBP was high, few HTN patients received treatment and BP remained high in the presence of antihypertensive treatment.

Tracking Biomarker Responses to Exercise in Hypertension.

Strong evidence is evolving that physical exercise prevents hypertension and reduces blood pressure in patients with pre- and manifest HTN. Yet, identifying and confirming the effectiveness of exercise are challenging. Herein, we discuss conventional and novel biomarkers such as extracellular vesicles (EVs) which may track responses to HTN before and after exercise. Evolving data shows that improved aerobic fitness and vascular function as well as lowered oxidative stress, inflammation, and gluco-lipid toxicity are leading biomarkers considered to promote HTN, but they explain only about a half of the pathophysiology. Novel biomarkers such as EVs or microRNA are providing additional input to understand the complex mechanisms involved in exercise therapy for HTN patients. Conventional and novel biomarkers are needed to fully understand the integrative "cross-talk" between tissues to regulate vasculature physiology for blood pressure control. These biomarker studies will lead to more specific disease markers and the development of even more personalized therapy in this field. However, more systematic approaches and randomized controlled trials in larger cohorts are needed to assess exercise effectiveness across the day and with different exercise types.

61 Effect of Pre-Existing Hypertension on Cardiovascular Support and Mortality Among Major Burn Patients

Abstract Introduction Hypertension (HTN) is the most common comorbidity seen in patients who sustain a major burn. HTN causes increased responsiveness of the autonomic nervous system to stressful stimuli, activation of RAAS, arterial and myocardial hypertrophy, and impaired vasodilation. Changes to these pathways are also seen in response to major burns. Given this common pathophysiology, patients with pre-existing HTN may demonstrate different mortality risk after major burn than those without HTN. The objective of this study is to compare the risk of in-hospital mortality among adult patients with and without pre-existing HTN admitted to the intensive care unit (ICU) with a major burn. In addition, we sought to determine the association of pre-existing HTN with the need for vasoactive agents, fluid resuscitation and urine output in the first 48-hours of ICU admission Methods Single-centre, historical cohort study using data from a Burn Registry, Intensive Care Database, and medical chart review. Variables of interest were demographic and injury characteristics, use of vasoactive agents, 12-, 24-, and 48-hour fluid requirements and urine output, and in-hospital mortality. We included adult (≥18 years) patients presenting with ≥20% total body surface area (TBSA) burns who were admitted to the ICU from January 2010 to August 2021. Pre-existing HTN was defined by pharmacy records showing the patient had filled a prescription for an anti-HTN medication within the 12-months prior to their burn. We compared variables of interest by HTN exposure and conducted univariate analysis to assess mortality risk Results 199 patients met inclusion criteria. Of these, 145 records were complete. The mean (standard deviation, SD) age was 47 (7) years and TBSA was 37 (16) percent. Most patients were males (83.5%) who sustained a flame burn (87.6%) without an inhalation injury (28.5%). Pharmacy records revealed that 28 patients (19.3%) had pre-existing HTN. Mean (SD) 24-hour fluid requirements were 7.1 (5.6) L and 5.2 (3.2) L for HTN and non-HTN patients, respectively (p=0.17). Mean (SD) 24-hour urine output was 1024 (747) mL and 1314 (780) mL for HTN and non-HTN patients, respectively (p=0.12). Sixty-one percent of HTN patients required vasoactive agents in the first 24-hours compared to 46.2% of non-HTN patients (p=0.18). Pre-existing HTN was associated with a 5-fold increase in in-hospital mortality (OR 5.5, CI 2.2-14.0) Conclusions Preliminary results suggest differences in fluid requirements, urine output and mortality risk between HTN and non-HTN patients with major burns. An external registry has been queried to identify pharmacy records for the 54 patients with missing data Applicability of Research to Practice Identifying differences in mortality risk and need for cardiovascular support among burn patients with HTN changes our approach to counselling and caring for these patients

The relationship between epicardial adipose tissue thickness and arrhythmias in patients with hypertension: a 3.0T cardiac magnetic resonance study.

To investigate the relationship between epicardial adipose tissue (EAT) thickness using cardiac magnetic resonance imaging (CMR) and arrhythmias in hypertensive patients. Fifty-four hypertensive patients with arrhythmias (HTN [arrhythmias+]), 79 hypertensive patients without arrhythmias (HTN [arrhythmias-]), and 39 normal controls were retrospectively enrolled. EAT thickness was measured on cine images. Analysis of covariance with Bonferroni's post hoc correction, Pearson or Spearman analysis, receiver operating characteristic curve, and intraclass correlation coefficient analysis were performed. All hypertensive patients had impaired left ventricular (LV) and left atrial (LA) myocardial deformation, and HTN (arrhythmias+) patients displayed higher LV myocardial native T1, LA volume index, and increased EAT thickness than HTN (arrhythmias-) patients and normotensive controls. The presence of LV late gadolinium enhancement (LGE) was higher in hypertensive patients with arrhythmias than in those without arrhythmias. EAT thickness metrics significantly correlated with age, systolic blood pressure, body mass index, triglycerides and high-density lipoprotein levels, LV mass index and native T1 (all p < 0.05). EAT thickness parameters were able to differentiate hypertensive patients with arrhythmias from those without arrhythmias and normal controls, and the right ventricular free wall had the highest diagnostic performance. An accumulation of EAT thickness could further induce cardiac remodeling, promote myocardial fibrosis, and exaggerate function in hypertensive patients with arrhythmias. CMR-derived EAT thickness metrics could be a useful imaging marker for differentiating hypertensive patients with arrhythmias, which might be a potential target for the prevention of cardiac remodeling and arrhythmias.

Evaluation of triglyceride-glucose index, triglyceride to high-density lipoprotein cholesterol ratio, and other lipid ratios in hypertension

Background: Hypertension is one of the most common diseases with increasing morbidity and mortality. HTN is associated with cardiovascular risk factors such as insulin resistance (IR) and hyperlipidemia. Recently, triglyceride-glucose (TyG) index has been proposed as a marker for insulin resistance. Aims and Objectives: This study aimed to assess TyG index, triglyceride to high-density lipoprotein ratio, and other lipid ratios in HTN patients. Materials and Methods: The present study was conducted on 200 subjects and was categorized into two groups. 100 hypertensive patients were considered as cases and 100 healthy individuals as controls. Serum sample of the subjects was used for the estimation of total cholesterol, triglycerides (TG), and high-density lipoprotein cholesterol (HDL-C). Low-density lipoprotein (LDL) cholesterol was calculated. TyG index and TG/HDL ratio and other lipid ratios were calculated. Blood pressure (BP) was recorded. Results: In this, BP, total cholesterol, TG, LDL, Very low-density lipoprotein cholesterol, Non-HDLC, TC/HDL ratio, TG/HDL ratio, and TyG index were increased in cases and HDL and HDL/LDL ratio were decreased. Study parameters were positively correlated with TyG index and TG/HDL ratio, except HDL, and HDL/LDL ratio. Conclusion: The study concludes that significantly increased TyG index and TG/HDL ratio in hypertensive cases and their correlation with blood pressure.

Impact of pre-existing conditions on peri-procedural coronary diameters

Background: Reperfusion therapy for acute myocardial infarction (AMI) by percutaneous coronary intervention (PCI) with stent implantation is associated with a significant reduction in immediate mortality. A long-term critical complication of PCI is in-stent restenosis (ISR). However, the factors leading to restenosis remain unclear, albeit changes in coronary diameters post-PCI have been suggested to be important in stent restenosis. We hypothesize that pre-existing conditions such as hypertension, diabetes, dyslipidemia, and smoking can affect the coronary artery diameters after PCI and contribute to in-stent restenosis.Project Methods: We recruited 26 AMI patients (age: 50-70 years; male 22) who were revascularized with PCI and studied whether pre-existing hypertension (HTN; n=10), type II diabetes mellitus (DM; n=5), dyslipidemia (DLP; n=3), and smoking (n=8) had independent contribution to changes in coronary artery diameter pre- and post-PCI. We measured segment-wise end-diastolic luminal cross-sectional diameter of left main (LM), left anterior descending (LAD), left circumflex (LCx), and right coronary arteries (RCA) from invasive coronary angiograms before and after PCI.Results: We found that the LM showed insignificant change in cross-sectional diameter in HTN, DM, and smoking groups. However, DLP group of patients showed an increase in diameter post-PCI. Proximal segment of LAD in HTN patients and all LAD segments in DM group were significantly increased in diameter. Proximal LCx was reduced in diameter in DLP group. RCA distal and PDA segments in HTN group as well as PDA segment in DM group were reduced in diameter post PCI.Potential Impact: Although following PCI, proximal and mid segments increase in diameter by 5-20%; and distal segments by 20-30%, our early findings indicate that changes in cross-sectional diameter of the coronary segments can fall outside these ranges when pre-existing conditions are present. Follow-up studies are needed to evaluate the relation between changes in coronary diameters and in-stent restenosis.

Additive effects of mitral regurgitation on left ventricular strain in essential hypertensive patients as evaluated by cardiac magnetic resonance feature tracking.

Hypertension is one of the leading risk factors for cardiovascular disease. Mitral regurgitation (MR) is a heart valve disease commonly seen in hypertensive cases. This study aims to assess the effect of MR on left ventricle (LV) strain impairment among essential hypertensive cases and determine factors that independently impact the global peak strain of the LV. We enrolled 184 essential hypertensive patients, of which 53 were patients with MR [HTN (MR +) group] and 131 were without MR [HTN (MR-) group]. Another group of 61 age-and gender-matched controls was also included in the study. All participants had received cardiac magnetic resonance examination. The HTN (MR +) group was classified into three subsets based on regurgitation fraction, comprising mild MR (n = 22), moderate MR (n = 19), and severe MR (n = 12). We compared the LV function and strain parameters across different groups. Moreover, we performed multivariate linear regression to determine the independent factors affecting LV global radial peak strain (GRS), circumferential peak strain (GCS), and global longitudinal peak strain (GLS). HTN (MR-) cases exhibited markedly impaired GLS and peak diastolic strain rate (PDSR) but preserved LV ejection fraction (LVEF) compared to the controls. However, HTN (MR +) patients showed a decrease in LVEF and further deteriorated GRS, GCS, GLS, PDSR, and the peak systolic strain rate (PSSR) compared to the HTN (MR-) group and controls. With increasing degrees of regurgitation, the LV strain parameters were gradually reduced in HTN (MR +) patients. Even the mild MR group showed impaired GCS, GLS, PDSR, and PSSR compared to the HTN (MR-) group. Multiple regression analyses indicated that the degree of regurgitation was independently associated with GRS (β = -0.348), GCS (β = -0.339), and GLS (β = -0.344) in HTN (MR +) patients. GLS was significantly impaired in HTN (MR-) patients. MR may further exacerbate the deterioration of LV strain among essential hypertensive cases. Besides, the degree of regurgitation was independently correlated with GRS, GCS, and GLS in HTN (MR +) patients.

Abstract 9486: miR-425/CFL2 Regulates Natriuretic Peptides Expression in Human CVD

Introduction: Previously, miR-425 have been implicated in the inhibition of the cardiac natriuretic peptide (NP) ANP gene expression with their role on BNP undefined. The mechanism by which miR-425 modulates NP expression remains to be explored. In heart failure (HF), adrenergic and neurohormone pathways are aberrantly activated. Our goal was to investigate the role of miR-425 and its downstream target Cofilin 2 (CFL2) on ANP and BNP expression in human CV disease (CVD). Hypothesis: We hypothesized miR-425, via CFL2, supresses NPs expression in vitro. MiR-425, CFL2 and NP levels were also determined in CVD patients. Methods: In vitro, human cardiomyocytes (HCM) were treated with vehicle (Veh), catecholamine isoproterenol (ISO) and cytokine endothelin (ET), miR-425 mimic. Cells were transfected with CFL2 plasmid or CFL2 siRNA. Normal (NM, n=100), Hypertension (HTN, n=30) and Acute HF (AHF, n=74) cohorts were studied. A confirmatory cohort was recruited. Plasma NT-proBNP, miR-425 were measured. In left ventricles (LV) from NM or HF (n=5 each), NP, CFL2 and miR-425 expression were assessed. Data expressed as means±SEM. * p&lt;0.05 vs NM or Veh. Results: In vitro in HCM, treatment with ISO or ET in HCM reduced miR-425 and elevated NP mRNA levels. Furthermore, miR-425 mimic reduced Nppa (Veh: 1.0±0.03, mimic: 0.7±0.02*) and Nppb levels (Veh: 1.0±0.03, mimic: 0.5±0.01*). We showed that a top predicted target of miR-425, CFL2, was also reduced by the mimic. Further, NP mRNA was elevated by CFL2 overexpression and reduced by the knockdown of CFL2. In humans, MiR-425 was lower in HTN and AHF patients (NM: 0.15±0.03, HTN: 0.03±0.005*, HF: 0.01±0.003*) than NM. MiR-425 negatively correlates with NT-proBNP in NM and AHF cohorts. Downregulation of miR-425 was validated in a second AHF cohort. Similarly, in HF LV tissues, miR-425 (NM: 2.5±0.5, HF: 1.0±0.5*) was lower than NM group, while CFL2 and NP gene and protein expression were increased. Conclusion: In vitro, cardiac stress hormones downregulate miR-425 and increase NP gene expression, potentially through a novel target, CFL2. In CVD patients, miR-425 is lower, accompanied by an elevation of CFL2 and NP. Our findings implicate the pathway of stress hormones/miR-425/CFL2/NP production in CVD.

PR interval as arisk factor for atrial fibrillation in patients with arterial hypertension

Abstract Introduction Hypertension (HTN) is one of the most important risk factors associated with atrial fibrillation (AF). Prolongation of the PR interval has been associated with an increased risk of incident AF, while PR interval is a component of the Framingham risk score for AF. However, the results regarding PR prolongation as a risk factor for AF are inconsistent. Purpose We aim to evaluate the predictive role of the PR interval for AF development in a large cohort of HTN patients. Methods Consecutive patients with essential hypertension without known AF at baseline were followed up for a mean period of 5.3±3.3 years. A 12-lead ECG and an echocardiography study were performed on each patient at baseline and annually, and 24h Holter rhythm monitoring was used in the event of arrhythmia symptoms. Routine clinical and paraclinical examinations as well as medications were implemented during the follow-up period according to the European Society of Cardiology/ European Society of Hypertension guidelines for HTN management. The PR interval and P wave duration were obtained from the baseline ECG. Results We included 1807 hypertensives (mean age 57±11 years; 49% males) with office systolic blood pressure (SBP)/ diastolic blood pressure (DBP) 144±17/89±11mmHg. During the follow-up period, 65 cases (3%) of new-onset AF were recorded. Patients with new-onset AF (n=67) compared to those without AF (n=1740) had greater baseline P wave duration (115 vs 110 ms) and PR internal (174 vs 157 ms). Multivariable Cox regression analysis showed that higher baseline PR internal is significantly associated with the development of AF (HR 1.01, 95% CI 1.01–1.02; p=0.01), while there was no significant predictive value for baseline P wave duration on the incidence of new-onset AF. Baseline increased DBP was associated with a higher incidence of AF (HR 1.05, 95% 1.003–1.091; p=0.037). Conclusions Baseline PR internal is a significant predictor of new-onset AF in hypertensive patients. The PR prolongation could be considered as a marker for cardiovascular degenerative aging caused by vascular inflammation and myocardial fibrosis. Funding Acknowledgement Type of funding sources: None.

Association of rs1137101 with hypertension and type 2 diabetes mellitus of Mongolian and Han Chinese.

BACKGROUNDHypertension (HTN) and type 2 diabetes mellitus (T2DM) are often coincident, and each condition is considered a risk factor for the other. Both occur frequently in the Inner Mongolia region of China. The reasons for differences in risk between Han and Mongolian ethnic groups are not known. The LEPR gene and its polymorphism, rs1137101 (Gln223Arg), are both considered risk factors for HTN and T2DM, but any role of rs1137101 in the occurrence of HTN + T2DM remains unclear for Mongolian and Han populations in the Inner Mongolia region.AIMTo investigate the relationship between rs1137101 and the occurrence of HTN with T2DM in Mongolian and Han populations in Inner Mongolia.METHODSA total of 2652 subjects of Han and Mongolian ethnic origins were enrolled in the current study, including 908 healthy controls, 1061 HTN patients and 683 HTN patients with T2DM.RESULTSThe association between the rs1137101 polymorphism and HTN with T2DM was analyzed, and differences between Han and Mongolian individuals assessed. There was a significant correlation between rs1137101 and HTN (co-dominant, dominant, over-dominant and log-additive models) and HTN + T2DM (co-dominant, dominant, over-dominant and log-additive models) after adjustment for sex and age in individuals of Mongolian origin. rs1137101 was significantly associated with HTN (co-dominant, recessive and log-additive models) and HTN + T2DM (co-dominant, dominant, over-dominant and log-additive models) in the Han Chinese population.CONCLUSIONMongolian and Han subjects from Inner Mongolia with HTN who had rs1137101 were protected against the development of T2DM. Allele A has the opposite impact on the occurrence of HTN in Mongolian and Han Chinese populations.