Maintenance Of Blood Pressure Research Articles

Effect of acute intranasal insulin administration on muscle sympathetic nerve activity in healthy young adults.

Systemic insulin increases muscle sympathetic nerve activity (MSNA) via both central actions within the brainstem and peripheral activation of the arterial baroreflex. Augmented MSNA during hyperinsulinemia likely restrains peripheral vasodilation and contributes to the maintenance of blood pressure (BP). However, in the absence of insulin action within the peripheral vasculature, whether central insulin stimulation increases MSNA and influences peripheral hemodynamics in humans remains unknown. Herein, we hypothesized intranasal insulin administration would increase MSNA and BP in healthy young adults. Participants were assigned to time control [(TC), n=13 (5F/8M), 28±1 yrs] or 160 IU of intranasal insulin administered over five min [n=15 (5F/10M), 26±2 yrs]; five (1F/4M) participants completed both conditions. MSNA (fibular microneurography), BP (finger photoplethysmography), and leg blood flow (LBF, femoral Doppler ultrasound) were assessed at baseline, 15, and 30 minutes following insulin administration. Leg vascular conductance (LVC = [LBF ÷ mean BP] x 100) was calculated. Venous insulin and glucose concentrations remained unchanged throughout (p>0.05). Following intranasal insulin administration, MSNA (burst frequency; baseline = 100%; minute 15: 121±8%; minute 30: 118±6%; p=0.009, n=7) and mean BP (baseline = 100%; minute 15: 103±1%; minute 30: 102±1%; p=0.003) increased, while LVC decreased (baseline = 100%; minute 15: 93±3%; minute 30: 99±3%; p=0.03). In contrast, MSNA, mean BP, and LVC were unchanged in TC participants (p>0.05). We provide the first evidence that intranasal insulin administration in healthy young adults acutely increases MSNA and BP and decreases LVC. These results enhance mechanistic understanding of the sympathetic and peripheral hemodynamic response to insulin.

Proteomic Analysis of Prehypertensive and Hypertensive Patients: A Novel Role of Actin Cytoskeleton in Disease Progression

Background: Hypertension is a pervasive and widespread health condition that poses a significant risk factor for cardiovascular disease, which includes conditions such as heart attack, stroke, and heart failure. Despite its widespread occurrence, the exact cause of hypertension remains unknown, and the mechanisms underlying the progression from prehypertension to hypertension require further investigation. Methods: To uncover potential biomarkers related to disease development, proteomic profiling using SOMAscan proteomic platform was conducted on Qatari individuals with prehypertension and hypertension. In this study, proteomic data collected from the Qatar Biobank were analyzed to compare participants with prehypertension, hypertension, and normal blood pressure. Statistical analysis was performed to identify altered protein expression between the study groups and to elucidate the biological pathways contributing to this disease. Results: The results revealed a cluster of proteins, including the SRC family, CAMK2B and CAMK2D, TEC, GSK3, VAV, and RAC, that were markedly upregulated in patients with hypertension compared to those with prehypertension (fold change ≥ 1.6 or ≤ -1.6, area under the curve ≥ 0.8, and q-value < 0.05). Pathway analysis showed that the majority of these proteins play a role in actin cytoskeleton remodeling, a crucial pathological event involved in hypertension progression. Conclusion: Actin cytoskeleton reorganization affects various biological processes that contribute to the maintenance of blood pressure, including vascular tone, endothelial function, cellular signaling, inflammation, fibrosis, and mechanosensing. Therefore, the findings of this study suggest a potential novel role of actin cytoskeleton-related proteins in the progression from prehypertension to hypertension. The present study sheds light on the underlying pathological mechanisms involved in hypertension and could pave the way for new diagnostic and therapeutic approaches for the treatment of this disease. This study was made possible through the support of Qatar University. This is the full abstract presented at the American Physiology Summit 2024 meeting and is only available in HTML format. There are no additional versions or additional content available for this abstract. Physiology was not involved in the peer review process.

Proteomic Analysis of Prehypertensive and Hypertensive Patients: Exploring the Role of the Actin Cytoskeleton.

Hypertension is a pervasive and widespread health condition that poses a significant risk factor for cardiovascular disease, which includes conditions such as heart attack, stroke, and heart failure. Despite its widespread occurrence, the exact cause of hypertension remains unknown, and the mechanisms underlying the progression from prehypertension to hypertension require further investigation. Recent proteomic studies have shown promising results in uncovering potential biomarkers related to disease development. In this study, serum proteomic data collected from Qatar Biobank were analyzed to identify altered protein expression between individuals with normal blood pressure, prehypertension, and hypertension and to elucidate the biological pathways contributing to this disease. The results revealed a cluster of proteins, including the SRC family, CAMK2B, CAMK2D, TEC, GSK3, VAV, and RAC, which were markedly upregulated in patients with hypertension compared to those with prehypertension (fold change ≥ 1.6 or ≤-1.6, area under the curve ≥ 0.8, and q-value < 0.05). Pathway analysis showed that the majority of these proteins play a role in actin cytoskeleton remodeling. Actin cytoskeleton reorganization affects various biological processes that contribute to the maintenance of blood pressure, including vascular tone, endothelial function, cellular signaling, inflammation, fibrosis, and mechanosensing. Therefore, the findings of this study suggest a potential novel role of actin cytoskeleton-related proteins in the progression from prehypertension to hypertension. The present study sheds light on the underlying pathological mechanisms involved in hypertension and could pave the way for new diagnostic and therapeutic approaches for the treatment of this disease.

Chloride/Multiple Anion Exchanger SLC26A Family: Systemic Roles of SLC26A4 in Various Organs.

Solute carrier family 26 member 4 (SLC26A4) is a member of the SLC26A transporter family and is expressed in various tissues, including the airway epithelium, kidney, thyroid, and tumors. It transports various ions, including bicarbonate, chloride, iodine, and oxalate. As a multiple-ion transporter, SLC26A4 is involved in the maintenance of hearing function, renal function, blood pressure, and hormone and pH regulation. In this review, we have summarized the various functions of SLC26A4 in multiple tissues and organs. Moreover, the relationships between SLC26A4 and other channels, such as cystic fibrosis transmembrane conductance regulator, epithelial sodium channel, and sodium chloride cotransporter, are highlighted. Although the modulation of SLC26A4 is critical for recovery from malfunctions of various organs, development of specific inducers or agonists of SLC26A4 remains challenging. This review contributes to providing a better understanding of the role of SLC26A4 and development of therapeutic approaches for the SLC26A4-associated hearing loss and SLC26A4-related dysfunction of various organs.

Maintenance of Normal Blood Pressure From Middle to Older Age: Results From the Atherosclerosis Risk in Communities Study.

It is unknown whether maintaining normal blood pressure (BP) from middle to older age is associated with improved health outcomes. We estimated the proportion of Atherosclerosis Risk in Communities study participants who maintained normal BP from 1987 to 1989 (visit 1) through 1996 to 1998 and 2011 to 2013 (over 4 and 5 visits, respectively). Normal BP was defined as systolic BP <120 mm Hg and diastolic BP <80 mm Hg, without antihypertensive medication. We estimated the risk of cardiovascular disease, dementia, and poor physical functioning after visit 5. In exploratory analyses, we examined participant characteristics associated with maintaining normal BP. Among 2699 participants with normal BP at baseline (mean age 51.3 years), 47.1% and 15.0% maintained normal BP through visits 4 and 5, respectively. The hazard ratios comparing participants who maintained normal BP through visit 4 but not visit 5 and through visit 5 versus those who did not maintain normal BP through visit 4 were 0.80 (95% CI, 0.63-1.03) and 0.60 (95% CI, 0.42-0.86), respectively, for cardiovascular disease, and 0.85 (95% CI, 0.71-1.01) and 0.69 (95% CI, 0.54-0.90), respectively, for poor physical functioning. Maintaining normal BP through visit 5 was more common among participants with normal body mass index versus obesity at visit 1, those with normal body mass index at visits 1 and 5, and those with overweight at visit 1 and overweight or normal body mass index at visit 5, compared with those with obesity at visits 1 and 5. Maintaining normal BP was associated with a lower risk of cardiovascular disease and poor physical functioning.

Vanderbilt Electronic Health Record Voice Assistant Supports Clinicians.

Electronic health records (EHRs) present navigation challenges due to time-consuming searches across segmented data. Voice assistants can improve clinical workflows by allowing natural language queries and contextually aware navigation of the EHR. To develop a voice-mediated EHR assistant and interview providers to inform its future refinement. The Vanderbilt EHR Voice Assistant (VEVA) was developed as a responsive web application and designed to accept voice inputs and execute the appropriate EHR commands. Fourteen providers from Vanderbilt Medical Center were recruited to participate in interactions with VEVA and to share their experience with the technology. The purpose was to evaluate VEVA's overall usability, gather qualitative feedback, and detail suggestions for enhancing its performance. VEVA's mean system usability scale score was 81 based on the 14 providers' evaluations, which was above the standard 50th percentile score of 68. For all five summaries evaluated (overview summary, A1C results, blood pressure, weight, and health maintenance), most providers offered a positive review of VEVA. Several providers suggested modifications to make the technology more useful in their practice, ranging from summarizing current medications to changing VEVA's speech rate. Eight of the providers (64%) reported they would be willing to use VEVA in its current form. Our EHR voice assistant technology was deemed usable by most providers. With further improvements, voice assistant tools such as VEVA have the potential to improve workflows and serve as a useful adjunct tool in health care.

Circulating Dipeptidyl Peptidase 3 Modulates Systemic and Renal Hemodynamics Through Cleavage of Angiotensin Peptides.

High circulating DPP3 (dipeptidyl peptidase 3) has been associated with poor prognosis in critically ill patients with circulatory failure. In such situation, DPP3 could play a pathological role, putatively via an excessive angiotensin peptides cleavage. Our objective was to investigate the hemodynamics changes induced by DPP3 in mice and the relation between the observed effects and renin-angiotensin system modulation. Ten-week-old male C57Bl/6J mice were subjected to intravenous injection of purified human DPP3 or an anti-DPP3 antibody (procizumab). Invasive blood pressure and renal blood flow were monitored throughout the experiments. Circulating angiotensin peptides and catecholamines were measured and receptor blocking experiment performed to investigate the underlying mechanisms. DPP3 administration significantly increased renal blood flow, while blood pressure was minimally affected. Conversely, procizumab led to significantly decreased renal blood flow. Angiotensin peptides measurement and an AT1R (angiotensin II receptor type 1) blockade experiment using valsartan demonstrated that the renovascular effect induced by DPP3 is due to reduced AT1R activation via decreased concentrations of circulating angiotensin II, III, and IV. Measurements of circulating catecholamines and an adrenergic receptor blockade by labetalol demonstrated a concomitant catecholamines release that explains blood pressure maintenance upon DPP3 administration. High circulating DPP3 increases renal blood flow due to reduced AT1R activation via decreased concentrations of circulating angiotensin peptides while blood pressure is maintained by concomitant endogenous catecholamines release.

The frequency of the ACE I/D polymorphism in South America: a systematic review and meta-analysis.

Angiotensin-converting enzyme (ACE) is a key component of the renin-angiotensin system and plays an important role in homeostasis and maintenance of blood pressure. However, little is known about allele and genotypic frequencies, as well as phenotypic characteristics associated with ACE polymorphism genotypes in South American populations. This study aimed to verify the allelic predominance and genotype frequency of ACE I/D polymorphism in South America and its association with the main diseases and related conditions. We conducted a systematic review considering studies published in the last 25 years available in PubMed, Scielo, LILACS, LIPECS, Coleciona SUS, CUMED, BINACIS, IBECS, and MEDLINE databases, resulting in the inclusion of 121 studies. Quality of the studies was assessed according to the Strengthening the Reporting of Genetic Association (STREGA) guidelines. We mapped the frequency of the ACE I/D polymorphism in South American populations. 8,856 (32.1%) subjects were DD, 13,050 were ID (47.4%), and 5,644 were II (20.5%) carriers. The main associated conditions included systemic arterial hypertension and other cardiovascular conditions, cardiorespiratory or respiratory characteristics, physical activity level, kidney conditions, aging-related diseases, as well as different types of cancers and metabolic conditions. 61.1% of the studies found no significant association between the respective conditions investigated and the ACE I/D polymorphism. Considering DD genotype or D allele, 21.5% of the studies observed negative and 4.9% positive outcomes. Regarding ID genotype, 4.1% of the studies identified negative and 0.8% positive outcomes, and for II genotype or I allele, 4.1% of the results had negative and 10.7% positive associations.

The potential effect of natural antioxidants on endothelial dysfunction associated with arterial hypertension.

Arterial hypertension represents a leading cause of cardiovascular morbidity and mortality worldwide, and the identification of effective solutions for treating the early stages of elevated blood pressure (BP) is still a relevant issue for cardiovascular risk prevention. The pathophysiological basis for the occurrence of elevated BP and the onset of arterial hypertension have been widely studied in recent years. In addition, consistent progress in the development of novel, powerful, antihypertensive drugs and their appropriate applications in controlling BP have increased our potential for successfully managing disease states characterized by abnormal blood pressure. However, the mechanisms responsible for the disruption of endogenous mechanisms contributing to the maintenance of BP within a normal range are yet to be fully clarified. Recently, evidence has shown that several natural antioxidants containing active ingredients originating from natural plant extracts, used alone or in combination, may represent a valid solution for counteracting the development of arterial hypertension. In particular, there is evidence to show that natural antioxidants may enhance the viability of endothelial cells undergoing oxidative damage, an effect that could play a crucial role in the pathophysiological events accompanying the early stages of arterial hypertension. The present review aims to reassess the role of oxidative stress on endothelial dysfunction in the onset and progression of arterial hypertension and that of natural antioxidants in covering several unmet needs in the treatment of such diseases.

Sympathetic transduction of cardiac sympathetic nerve activity in healthy, conscious sheep.

Sympathetic transduction is the study of how impulses of sympathetic nerve activity (SNA) affect end-organ function. Recently, the transduction of resting bursts of muscle SNA (MSNA) has been investigated and shown to have a role in the maintenance of blood pressure through changes in vascular tone in humans. In the present study, we investigate whether directly recorded resting cardiac SNA (CSNA) regulates heart rate (HR), coronary blood flow (CoBF), coronary vascular conductance (CVC), cardiac output (CO) and mean arterial pressure. Instrumentation was undertaken to record CSNA and relevant vascular variables in conscious sheep. Recordings were performed at baseline, as well as after the infusion of a β-adrenoceptor blocker (propranolol) to determine the role of β-adrenergic signalling in sympathetic transduction in the heart. The results show that after every burst of CSNA, there was a significant effect of time on HR (n=10, ∆: +2.1±1.4 beatsmin-1 , P=0.002) and CO (n=8, ∆: +100±150mLmin-1 , P=0.002) was elevated, followed by an increase in CoBF (n=9, ∆: +0.76mLmin-1 , P=0.001) and CVC (n=8, ∆: +0.0038mLmin-1 mmHg-1 , P=0.0028). The changes in HR were graded depending on the size and pattern of CSNA bursts. The HR response was significantly attenuated after the infusion of propranolol. Our study is the first to explore resting sympathetic transduction in the heart, suggesting that CSNA can dynamically change HR mediated by an action on β-adrenoceptors. KEY POINTS: Sympathetic transduction is the study of how impulses of sympathetic nerve activity (SNA) affect end-organ function. Previous studies have examined sympathetic transduction primarily in the skeletal muscle and shown that bursts of muscle SNA alter blood flow to skeletal muscle and mean arterial pressure, although this has not been examined in the heart. We investigated sympathetic transduction in the heart and show that, in the conscious condition, the size of bursts of SNA to the heart can result in incremental increases in heart rate and coronary blood flow mediated by β-adrenoceptors. The pattern of bursts of SNA to the heart also resulted in incremental increases in heart rate mediated by β-adrenoceptors. This is the first study to explore the transduction of bursts of SNA to the heart.

Non-pharmacological interventions for the reduction and maintenance of blood pressure in people with prehypertension: a systematic review protocol

IntroductionPrehypertension is defined as blood pressure that is above the normal range but not high enough to be classed as hypertension. Prehypertension is a warning of development of hypertension as...

The Role of Dopamine D2 receptors and Oxidative Stress in the Pathogenesis of Hypertension

Globally, hypertension is the number one risk factor for death, affecting more than 1 billion people. Hypertension is the result of the interactions among genetics, epigenetics, environment, and lifestyle. The long-term regulation of blood pressure rests on renal and non-renal mechanisms. The impaired renal sodium handling in hypertension is caused by aberrant counter-regulatory natriuretic/anti-natriuretic pathways. The sympathetic nervous and renin-angiotensin systems are anti-natriuretic pathways. A counter-regulatory natriuretic pathway is the renal dopaminergic system. Aberrant dopaminergic regulation of renal sodium transport in hypertension is caused by a decrease in renal dopamine synthesis and/or dysfunction of any of the 5 dopamine receptors (D1R, D2R, D3R, D4R, &amp; D5R). Normally, an increase in sodium intake increases while a decrease in sodium intake decreases blood pressure, albeit transiently until sodium balance is achieved. However, ~50 % of hypertensive and ~26% of normotensive subjects have increased blood pressure on high sodium intake, a case of salt sensitivity, while ~20 % have increased blood pressure on a low sodium intake, a case of inverse salt sensitivity. Low and high sodium intakes are associated with increased incidence of cardiovascular events/mortality. In humans with inverse salt sensitivity, there is a linear relationship between the number of single nucleotide polymorphisms in DRD2 (rs6276 and 6277) and decreased renal D2R expression. The increase in blood pressure on a low sodium diet may be due to increased activities of the renin-angiotensin and sympathetic nervous systems that cannot be counteracted by D2R. Hypertension may be a cause or consequence of inflammation or oxidative stress. Deficient D2R function causes renal inflammation independently of the increase in blood pressure. Subjects carrying DRD2 single nucleotide polymorphisms have increased inflammation, mediated by decreased regulation of the miR-217-Wnt5a-Ror2 pathway. The D2R, via paraoxonase2 and sestrin2, maintains normal redox balance and blood pressure. In summary, the D2R is important in the maintenance of normal blood pressure by regulating renal sodium transport, vascular reactivity, inflammation, and redox balance.

Nursing care of patients with relapsed and refractory multiple myeloma treated with B-cell mature antigen-targeted universal chimeric antigen receptor T cells.

To investigate the efficacy of a nursing approach using B-cell maturation antigen (BCMA)-targeted universal chimeric antigen receptor T-cell (BCMA-UCART) immunotherapy in the treatment of 8 patients with relapsed refractory multiple myeloma (MM). In this study, 16 patients with relapsed and refractory MM who were treated with BCMA-targeted UCART in our department from May 2020 to November 2022 were selected, and were divided into a control group and an experimental group of 8 cases each according to the difference in the nursing methods, and the control group adopted the conventional universal nursing program. The experimental group used the nursing protocol that cooperated with the immunotherapy of this study, and the main points of nursing care included timely assessment of organ functional status, safe and accurate infusion of BCMA-UCART, identification and management of hyperthermia, hypotension, arrhythmia and central nervous system adverse reactions caused by cytokine release after BCMA-UCART infusion, as well as management of fluid imbalance, maintenance of stable blood pressure, and cooperation with physicians to effectively control of inflammatory factors. In addition, patients were provided with psychological and dietary support. The duration of hospitalization was compared between the two groups after the intervention. The discharge time of the experimental group was significantly shorter than that of the control group (P he.05), and the experimental group effectively controlled cytokine release syndrome, immune effector cell-associated neurotoxicity syndrome and acute graft-versus-host disease. The nursing program with BCMA-UCART immunotherapy is effective in intervening MM patients and promotes their early recovery and discharge from the hospital.

Manually Controlled, Continuous Infusion of Phenylephrine or Norepinephrine for Maintenance of Blood Pressure and Cardiac Output During Spinal Anesthesia for Cesarean Delivery: A Double-Blinded Randomized Study

(Anesth Analg. 2023;136:540–550) Spinal anesthesia (SA) can induce maternal hypotension which may compromise uteroplacental and fetal perfusion. Current practices that counteract SA-induced vasodilation employ a phenylephrine or norepinephrine infusion through computer-controlled, fixed-rate, and manual delivery methods. The current study investigated the hemodynamic effects of continuous infusion of norepinephrine compared with phenylephrine in maintaining cardiac index (CI) during cesarean delivery (CD) under SA.

Comparison of outcomes following intravenous magnesium compared with intravenous labetalol and oral nifedipine in 355 pregnant Han Chinese women with preeclampsia.

As per the American College of Obstetricians and Gynecologists in 2013, magnesium sulfate is the gold standard for the management of preeclampsia, but it has a short action time that does not provide stable maintenance of blood pressure. Labetalol is currently recommended as first-line treatment by the national UK guidance. This study included 355 pregnant Han Chinese women with preeclampsia and aimed to compare outcomes following intravenous magnesium compared with intravenous labetalol and oral nifedipine. Women received 4 g intravenous magnesium sulfate followed by the maintenance dose of 1 g/h intravenous magnesium sulfate (MS cohort, n = 104) or intravenous labetalol (LB cohort, n = 115), or oral nifedipine (NF cohort, n = 136). Therapy success: systolic blood pressure ~140 mm Hg and diastolic blood pressure ~90 mm Hg, therapy failure: persistent systolic blood pressure ≥ 160 or diastolic blood pressure ≥ 110 mm Hg after maximum dosage of therapy (EL). Women of all cohorts successfully decreased systolic and diastolic blood pressures at EL as compared to them before therapy conditions (P < .001, for all). At EL, systolic and diastolic blood pressures of women of the LB cohort decreased more than those of women of the MS and NF cohorts (P < .05, for all). Therapy was more successful in women of the LB cohort than those of the NF cohort (107 [93%] vs 112 [82%], P = .0132). More numbers of women were reduced blood pressure after 1 day of therapy from the LB cohort than those of the NF (75 [65%] vs 21 [15%]) and MS (75 [65%] vs 35 [34%]) cohorts (P < .0001 for both). Labetalol-induced tachycardia, bradycardia, and intracranial hemorrhage in pregnant women and respiratory distress syndrome and hypoglycemia in neonates. Intravenous labetalol provides proper reduction of blood pressure in Han Chinese women with preeclampsia but has the risk of undesirable maternal and neonatal adverse effects (Level of Evidence: IV; Technical Efficacy: Stage 4).

Autonomic nervous system and postural control regulation during orthostatic test as putative markers of physical resilience among community-dwelling older adults

IntroductionWe examined whether autonomic nervous system (ANS) and postural control regulation during orthostatic test reflect physical resilience by studying their associations with maximal walking speed and mortality. MethodsThe participants were community-dwelling Finnish men (n = 303) and women (n = 386) aged 75, 80, and 85 years at baseline. Systolic and diastolic blood pressure (BP), heart rate, heart rate variability (HRV), respiratory rate, and postural sway were obtained using a digital sphygmomanometer, a single-channel ECG, and thigh- and chest-worn accelerometers. Linear and Cox regression models were used to estimate the associations of the physiological indices with maximal 10-m walking speed and 5-year mortality separately for sexes. ResultsBetter maintenance of BP under orthostatic stress was associated with faster walking speed in women and lower mortality hazard in men. Greater HRV in terms of low frequency power and lower respiration rate in supine position and smaller orthostatic changes in these were associated with faster walking speed especially in women. Less postural sway after standing up was associated with faster walking speed in women (−0.057, SE 0.022, p = 0.011) and more postural sway with increased mortality hazard in men (HR 1.71, 95 % CI 1.20–2.43) even after controlling for BP responses. ConclusionsIn addition to ANS regulation at rest and under stress, adaptation of postural control system to orthostasis may be used in quantifying older adults' physical resilience. Wearable sensors capturing stimulus-response patterns and natural fluctuations of body functions may provide opportunities to monitor and incorporate different subsystems' resilience also in free-living conditions.

Factors influencing normal blood pressure maintenance in young adults.

Despite an alarming increase in the prevalence of hypertension among Chinese young adults, longitudinal studies investigating factors that affect the maintenance of normal blood pressure (BP) in this population are lacking. Our study aimed to address this knowledge gap. A total of 7100 participants from the Kailuan Study who had normal BP and were aged<30 years at their first physical examination between 2006 and 2016 were included in this study. Cox proportional hazards regression models were used to assess hazard ratios (HR), and 95% confidence intervals (CI) were calculated to assess the associations between influencing factors and the maintenance of normal BP in young adults. Analyses were stratified by sex. During the follow-up period (mean, 7.98 years), 1921 participants (27.06%) maintained normal BP. Higher education levels (HR, 1.11; 95% CI, 1.00-1.22), low salt intake (HR, 1.25; 95% CI, 1.04-1.51), being underweight (HR, 1.16; 95% CI, 1.02-1.31), and having normal weight (HR, 1.19; 95% CI, 1.01-1.39), normal blood glucose (HR, 1.22; 95% CI, 1.02-1.46), and no family history of hypertension (HR, 1.65; 95% CI, 1.41-1.92) at baseline were found to be associated with maintaining normal BP. Compared with female smokers, female non-smokers had 1.68 times higher odds of maintaining normal BP. This study identified factors that influence the maintenance of normal BP in the young population in China. This information can assist clinicians in establishing comprehensive and effective primary prevention measures for hypertension.

Prevention and management of post-thyroidectomy cervical haematoma. Recommendations of the AFCE (Association francophone de chirurgie endocrinienne) with the SFE (Société française d’endocrinologie) and the SFMN (Société française de médecine nucléaire)

Post-thyroidectomy cervical haematoma (PTCH) requiring reoperation occurs in fewer than 5% of patients but can be fatal or leave severe neurological sequelae if compressive. Risk factors besides anticoagulant treatments are discussed. Preoperative prevention complies with the recommendations of the French Society of Anaesthesia and Resuscitation (SFAR) for the management of antiaggregants and anticoagulants before and after the operation. Intraoperative prevention is centred on careful haemostasis, sometimes aided by coagulation tools and haemostatic agents, although there is no firm evidence of their effectiveness against the occurrence of PTCH. Systematic drainage of the thyroid cavity is no longer standard practice for the prevention of PTCH. Postoperatively, maintenance of normal blood pressure is essential to prevent PTCH, together with control of pain, coughing, nausea and vomiting. To reduce the risk of serious complications, medical and paramedical teams must be trained to recognise a haematoma and manage it so that it can be evacuated as a matter of extreme urgency, if necessary bedside, and then treated for its cause in the operating theatre.

Assessment of Normal Systolic Blood Pressure Maintenance with the Risk of Coronary Artery Calcification Progression in Asymptomatic Metabolically Healthy Korean Adults with Normal Weight, Overweight, and Obesity.

Metabolically healthy obesity (MHO) is known to have a close association with subclinical coronary atherosclerosis. Despite recent data on the benefit of intensive systolic blood pressure (SBP) control in diverse clinical conditions, little is known regarding the association of normal SBP maintenance (SBPmaintain) with coronary artery calcification (CAC) progression in MHO. This study included 2724 asymptomatic adults (48.8 ± 7.8 years; 77.9% men) who had no metabolic abnormalities except overweight and obesity. Participants with normal weight (44.2%), overweight (31.6%), and obesity (24.2%) were divided into two groups: normal SBPmaintain (follow-up SBP < 120 mm Hg) and ≥elevated SBPmaintain (follow-up SBP ≥ 120 mm Hg). CAC progression was defined using the SQRT method, a difference of ≥2.5 between the square root (√) of the baseline and follow-up coronary artery calcium score. During a mean follow-up of 3.4 years, the proportion of normal SBPmaintain (76.2%, 65.2%, and 59.1%) and the incidence of CAC progression (15.0%, 21.3%, and 23.5%) was different in participants with normal weight, overweight, and obesity (all p < 0.05, respectively). The incidence of CAC progression was lower in the normal SBPmaintain group than in the ≥elevated SBPmaintain group in only participants with obesity (20.8% vs. 27.4%, p = 0.048). In multiple logistic models, compared to participants with normal weight, those with obesity had a higher risk of CAC progression. Normal SBPmaintain was independently associated with the decreased risk of CAC progression in participants with obesity. MHO had a significant association with CAC progression. Normal SBPmaintain reduced the risk of CAC progression in asymptomatic adults with MHO.

Вплив об’ємного пневмопресингу низької інтенсивності в осіб з різним типом регуляції автономної нервової системи на центральну гемодинаміку

The purpose of our study was to determine changes in central hemodynamics under the condition of exposure to low-intensity IPC on the lower limbs in individuals with different types of regulation of the autonomic nervous system. The group of 62 participants in age of 18-22 years were investigated. Testing session that included pressure of 40 mmHg and 20-minute period of temporary occlusion of the lower extremities was performed by intermittent pneumatic compression with Recovery Pump PRX device (“Mego Aftek AC Ltd”, Israel). Before, during the exposure and recovery period of the procedure arterial blood pressure was recorded with Korotkov’s auscultative method by mercury tonometer (“Dr.Frei”A-10, Switzerland). For monitoring hemodynamic changes impedance cardiography (ICG) method was applied (“ХАІ-medica”, Kharkiv, Ukraine), by 15 sec. Based on the spectrum power values in the range of 0.15-0.4 (HFnorm), which was calculated according to the formula HFnorm = HF/(HF+LF)∙100%, 3 groups of volunteers were determined by method of sigma deviations. The 1st group included 29 people with a predominance of the sympathetic link of regulation of the autonomic nervous system, HF norm at rest is less than 40 nu. The 2nd - 19 people with a normotonic type of regulation, HFnorm from 40 to 60 nu. The 3rd - 14 people with a predominance of the parasympathetic link, HF norms higher than 60 nu. It has been established that in persons of the 1st group blood pressure maintenance is a result of complex neurohumoral interactions, in the 3rd group - due to vascular components. The decrease in the heart rate and cardiac index in the 1st and 2nd groups is caused by a decrease in venous return to the heart, and in the 3rd group - by contractile function of the heart. The proven impact of non-invasive IPC on peripheral blood circulation improving supports the concept of orthostatic tolerance. Future long-term studies are needed to evaluate the further long-term efficacy of IPC, safety and tolerability of this approach in clinical practice.