Hemodynamic Changes In Patients Research Articles

Comparative Evaluation of Dexmedetomidine and Clonidine on Propofol Consumption, Haemodynamics and Postoperative Recovery in Laparoscopic Surgeries: A Prospective, Double-Blind, Placebo-Controlled, Randomised Study

Background and Aims: Laparoscopic surgery is associated with significant haemodynamic changes due to pneumoperitoneum formation. Various studies have demonstrated that α2 adrenergic agonists, such as clonidine and dexmedetomidine, prevent the haemodynamic response due to pneumoperitoneum during laparoscopic surgery. Methods: A total of 104 female patients undergoing laparoscopic hysterectomies were divided into three groups at random. Group D patients were administered a loading dose of 1 μg/kg of dexmedetomidine prior to induction over a period of 15 minutes and a maintenance dose of 0.5 μg/kg/h during the surgical procedure. Group CL patients were given a loading dose of 2 μg/kg of clonidine before induction over a period of 15 minutes and a maintenance dose of 1 μg/kg/h during the surgery. Group C received same volume of normal saline over same duration and maintenance infusion throughout the surgery. The primary outcome was the haemodynamic changes at different time interval. The secondary outcome was the response to verbal commands, extubation time and orientation time. Results: There was no significant difference in heart rate and blood pressure values between group D and group CL during whole study period. Whereas in group C, there was a statistically significant increase in heart rate and blood pressure after intubation and during pneumoperitoneum period ( P < 0.05). Extubation time and orientation time were significantly delayed in group D and group CL when compared with group C and D ( P < 0.05). Conclusion: Clonidine or dexmedetomidine effectively attenuates the haemodynamic changes in patients undergoing laparoscopic hysterectomies compared to the control group.

The effect of afterload on right ventricular pacing-induced left ventricular dysfunction: a translational study

Abstract Introduction Right ventricular (RV) pacing (RVP) impairs left ventricular (LV) function. Nevertheless, the interaction between arterial afterload and RVP-associated LV dysfunction has not been investigated yet. Purpose We sought to examine the effect of afterload on RVP-evoked LV hemodynamic changes in patients with aortic stenosis (AS) undergoing transcatheter aortic valve implantation (TAVI) as well as in a small animal model of sustained LV pressure overload (PO). Methods Thirty-five patients with AS and a previously implanted pacemaker underwent detailed echocardiographic examination immediately before TAVI and also on the second postoperative day. The ultrasound measurements were carried out during intrinsic, narrow QRS rhythm and during frequency-matched RVP as well. Global myocardial work index (GMWI) was calculated to assess LV contractility. In parallel, LV pressure-volume analysis was performed in Wistar rats with transverse aortic constriction (TAC) or sham operation (Sham) during intrinsic narrow QRS rhythm (termed as TAC-Vsense and Sham-Vsense) as well as during RVP (termed as TAC-Vpace and Sham-Vpace). RVP was achieved in rats by an octopolar electrophysiology catheter placed in the RV. Results RVP decreased LV contractility in AS patients before and after TAVI as well. Nevertheless, the extent of RVP-evoked LV dysfunction was alleviated following pressure unloading (ΔGMWI: -37±7 vs. -25±8%, before TAVI vs. after TAVI, P<0.05). Similarly, although RVP was associated with reduced LV contractility in both the TAC (the slope of the maximum rate of LV pressure rise-end-diastolic volume relation [dPdtmax-EDV]: 92±8 vs. 53±6mmHg/s/µl, TAC-Vsense vs. TAC-Vpace; P<0.05) and Sham groups (dPdtmax-EDV: 74±5 vs. 60±9 mmHg/s/µl, Sham-Vsense vs. Sham-Vpace; P<0.05), the negative inotropic effect of RVP was found to be stronger in the TAC compared to the Sham group (ΔdPdtmax-EDV: -42±4 vs. -19±6%; TAC vs. Sham, P<0.01). Furthermore, reduction of the maximal rate of LV pressure decrease (ΔdPdtmin: -20±3 vs. -5±5%, TAC vs. Sham, P<0.01) and prolongation of the active relaxation time constant (Δτ: 22±3 vs. 6±3%, TAC vs. Sham, P<0.01) also occurred to a greater extent in case of sustained LV PO, indicating augmented diastolic dysfunction. Conclusion Our translational results indicate that RVP-induced LV dysfunction might be afterload dependent.

Calculation of intraprocedural hemodynamics with computational functional dynamic in mitral valve edge-to-edge repair

Abstract Background Hemodynamic outcomes in patients undergoing transcatheter edge-to-edge-repair of the mitral valve (M-TEER) are difficult to predict. Computational functional dynamic (CFD) is frequently used in biomedical engineering to simulate blood flow patterns under various conditions. The authors developed a standardized workflow for individualized analyses and investigated the hemodynamic of mitral regurgitation volumes and gradients by using CFD. Methods 20 patients from two high volume centers who suffered from severe mitral regurgitation (MR) and underwent full cycle cardiac computed tomography (CT) prior procedure were enrolled. Baseline computed tomography and intraprocedural data were analyzed. Based on the specific valve morphology, individualized CFD-simulations were performed to calculate MR volumes prior to intervention and estimate hemodynamics after M-TEER. Results CFD-analyses of 20 patients (mean age 80±4 years, 60% male) showed excellent correlation between baseline PISA method-based MR volumes (45±23ml) measured in transesophageal echocardiography (TEE) and CFD-based calculation (45±26ml; R=0.917; P<0.001) as well as between TEE-measured mean baseline effective regurgitant orifice area (EROA; 27±16mm²) and CFD-measured EROA (24±18mm²; R=0.869; P<0.001)). After device implantation, correlation between intraprocedural TEE-measured and CFD-estimated correlation for residual MR volumes (R=0.949; P<0.001) and EROA (R=0.841; P<0.001) remained robust. Post-interventional mean diastolic pressure gradient (TEE) was 3.6±2.8mmHg which was in close correlation with the CFD estimated gradient (3.0±1.8mmHg, R=0.905; P<0.001). Conclusions This is the first study to use a CFD-standardized workflow for predicting hemodynamic changes in patients undergoing M-TEER using data from two different centers. In the future, CFD-based analyses might serve as a key-diagnostic tool for predicting residual MR volumes and gradients for M-TEER-procedures.Comparison of TEE and CFD flow patternBland-Altman-Blots

Haemodynamic effects of intra-aortic balloon pumps stratified by baseline pulmonary artery pulsatility index.

Intra-aortic balloon pump (IABP) devices are commonly used in patients with heart failure related cardiogenic shock (HF-CS), including those with out-of-proportion right ventricular (RV) dysfunction. Pulmonary artery pulsatility index (PAPi) is a haemodynamic surrogate for RV performance. We aimed to assess short-term haemodynamic changes in patients with HF-CS following IABP support stratified by baseline PAPi. This is a single-centre study of 67 consecutive patients with HF-CS who underwent IABP placement between 2020 and 2022. The primary aim was haemodynamic changes of specific variables on pulmonary artery catheter monitoring over 72h following IABP placement. Secondary aims were clinically significant changes in diuretic regimens, changes in inotropes or vasopressors at 72h following IABP, along with clinical outcomes. Prior to IABP placement, 57% of the total cohort (median age 59years [48, 69], 31% female) had Society of Cardiovascular Angiography and Interventions Stage C HF-CS. Thirty-eight (56%) patients had a PAPi <2.0. Following 72h of IABP support, the PAPi <2.0 group had an observed significant decrease in central venous pressure (CVP; 20 to 12mmHg, P<0.001) and mean pulmonary artery pressure (mPAP; 37.5 to 28.5mmHg, P=0.001), and an increase in PAPi (1 to 1.6, P=0.001). No significant change in cardiac index (CI; 2 to 2.1L/min/m2, P=0.31) was observed. The PAPi ≥2.0 group (N=29) had no observed significant change in CVP (10 to 8mmHg, P=0.47), or PAPi (2.6 to 2.8, P=0.92), but there was a significant improvement in CI (1.9 to 2.5L/min/m2, P=0.004) along with reduction in mPA (37 to 29mmHg, P=0.03). The PAPi <2.0 group had a significant increase in diuretic requirement (52.6% vs. 20.7%, P=0.01) and numerically greater addition of inotropes/vasopressors (47.3% vs. 34.4%, P=0.07) compared with the PAPi ≥2.0 group at 72h following IABP placement. Significantly more patients in the PAPi ≥2.0 group underwent left ventricular assist device (55.2% vs. 26.3%, P=0.02), with no overall significant differences observed in escalation to veno-arterial extracorporeal membrane oxygenation, 30-day mortality, renal replacement therapy post-IABP, or rates of heart transplantation. IABP devices in those with HF-CS and low or abnormal PAPi may provide modest short-term haemodynamic benefits without significant improvement in CI, along with greater need for adjustment in medical therapeutics to achieve haemodynamic optimization.

Prediksi Perubahan Hemodinamik Pasien setelah Pemberian Premedikasi menggunakan Machine Learning Neural Network Guna Meningkatkan Kinerja Penanganan Medis

This research presents the development process of a machine learning neural network model for predicting hemodynamic changes in patients after premedication, aiming to enhance the performance of medical interventions. The model was constructed using 3055 patients’ data who underwent premedication processes. The developed neural network model has an architecture consisting of 10 nodes in the input layer, 10 nodes in the hidden layer, and 3 nodes in the output layer. The evaluation results of the model indicate an overall accuracy of 85%. The precision values are high for normal class predictions at 0.85 and for hypertension class predictions at 0.81 with corresponding recalls of 1 (high) and 0.6 (moderate), respectively. However, predictions for the hypotension class still have a low precision of 0.6 and a recall of 0.04 (very low) due to the significantly lower number of samples in the hypotension class compared to the normal and hypertension classes. While testing with new data, the model has successfully predicted whether patients will experience hemodynamic pressure changes. It is expected that this model can contribute to improving the performance of medical interventions, thereby minimizing undesirable hemodynamic pressure changes.

Novel Relaxin Receptor RXFP1 Agonist AZD3427 in the Treatment of Heart Failure: A Phase 1a/b, First-in-Human, Randomized, Single-Blind, Placebo-Controlled Study.

Heart failure mortality remains high despite recent progress in pharmacological treatment. AZD3427 is a selective long-acting analog of relaxin, a vasodilatory hormone with antifibrotic effects. We assessed the safety, pharmacokinetics, and pharmacodynamics of AZD3427 in healthy volunteers and patients with heart failure on standard-of-care therapy. In this first-in-human, phase 1a/b, randomized, single-blind, placebo-controlled study, healthy volunteers were randomized 6:2 to receive a single dose of AZD3427 or placebo by subcutaneous injection in 5 mixed-ethnicity cohorts (5, 10, 30, 90, or 270 mg) and 1 Japanese-descent cohort (270 mg), or by intravenous injection in 1 cohort (15 mg). After confirming safety and tolerability in healthy volunteers, 3 cohorts of patients with heart failure and left ventricular ejection fraction ≤40% and 3 cohorts with ejection fraction ≥41% were randomized 6:2 to receive 5 weekly doses of AZD3427 (5, 15, or 45 mg) or placebo by subcutaneous injection. In total, 56 healthy volunteers and 48 patients with heart failure were randomized. AZD3427 was well tolerated at all doses. After subcutaneous administration, AZD3427 was absorbed slowly, and exposure was approximately linear across the dose range. In patients with heart failure, AZD3427 terminal half-life was 13 to 14 days and there were numerical increases in stroke volume and estimated glomerular filtration rate. No treatment-emergent antidrug antibodies were detected. AZD3427 had favorable safety and pharmacokinetic profiles. Hemodynamic changes in patients with heart failure were consistent with the anticipated effects of a relaxin analog. These findings support further development of AZD3427 as a novel long-term treatment for patients with heart failure. URL: https://www.clinicaltrials.gov; Unique Identifier: NCT04630067.

The association between cardiac T2*BOLD and quantitative flow ratio (QFR) in the diagnosis of stenotic coronary arteries in patients with multi-vessel coronary artery disease.

T2*BOLD is based on myocardial deoxyhemoglobin content to reflect the state of myocardial oxygenation. Quantitative flow ratio is a tool for assessing coronary blood flow based on invasive coronary angiography. This study aimed to evaluate the correlation between T2*BOLD and QFR in the diagnosis of stenotic coronary arteries in patients with multi-vessel coronary artery disease. Fifty patients with MVCAD with at least 1 significant coronary artery stenosis (diameter stenosis > 50%) and 21 healthy control subjects underwent coronary angiography combined with QFR measurements and cardiovascular magnetic resonance (CMR). QFR ≤ 0.80 was considered to indicate the presence of hemodynamic obstruction. Totally 60 (54%) obstructive vessels had hemodynamic change. Between stenotic coronary arteries (QFR ≤ 0.8) and normal vessels, T2*BOLD showed AUCs of 0.97, 0.69, and 0.91 for left anterior descending (LAD), left circumflex (LCX) and right coronary (RCA) arteries and PI displayed AUCs of 0.89, 0.77 and 0.90 (all p > 0.05, except for LAD). The AUCs of T2*BOLD between stenotic coronary arteries (QFR > 0.8) and normal vessels were 0.86, 0.72, and 0.85 for LAD, LCX and RCA; while, PI showed AUCs of 0.93, 0.86, and 0.88, respectively (p > 0.05). Moreover, T2*BOLD displayed AUCs of 0.96, 0.74, and 0.91 for coronary arteries as before between coronary arteries with stenosis (QFR ≤ 0.8 and > 0.8), but the mean PI of LAD, LCX and RCA showed no significant differences between them. T2* BOLD and QFR have good correlation in diagnosing stenotic coronary arteries with hemodynamic changes in patients with stable multi-vessel CAD. T2* BOLD is superior to semi-quantitative perfusion imaging in analyzing myocardial ischemia without stress.

Impact of general anesthesia on postoperative complications in orthognathic surgery: a retrospective comparison of total intravenous anesthesia versus volatile anesthesia

Orthognathic surgery has a high incidence of postoperative nausea (PON) and vomiting (POV), delaying mobility initiation and postoperative recovery. Bleeding is another risk associated with this surgical procedure. We aimed to compare total intravenous anesthesia (TIVA) and volatile anesthesia in patients undergoing orthognathic surgery in terms of postoperative nausea and vomiting (PONV) incidence and hemodynamic changes. This retrospective study included 82 patients who underwent bilateral sagittal split ramus osteotomies at Saga University Hospital between April 2016 and April 2021. We compared the effects of TIVA and volatile anesthesia on PONV onset after surgery, acute postoperative hemodynamic changes (blood pressure and heart rate), and factors contributing to PONV. PON was significantly lower in the TIVA group than in the volatile anesthesia group. The total dose of fentanyl contributed to the onset of POV, while the onset of PON was associated with low volumes of fluid infusion and urine in the TIVA and volatile anesthesia groups, respectively. Furthermore, post-extubation hemodynamic change was significantly smaller in the TIVA group than in the volatile anesthesia group. Therefore, TIVA could have a reduced risk of PONV and hemodynamic changes in patients undergoing orthognathic surgery. Employing TIVA could mitigate perioperative complications and enhance patient safety.

Systemic and cerebral hemodynamic changes in patients undergoing shoulder arthroscopy in the beach chair position

Поєднання таких факторів як загальна анестезія та зміна положення тіла після індукції мають вплив на системну та церебральну гемодинаміку. Мета. Bиявити вплив зміни положення тіла та загальної анестезії на пікову систолічну швидкість внутрішньої сонної артерії (ПСШВСА) у пацієнтів під час проведення артроскопії. Методи. 85 пацієнтів із фізичним статусом за ASA I–II, середнього віку (33,0 ± 11,3) років, проведено артроскопію плечового суглоба під загальним наркозом. Основними вимірюваннями були систолічний артеріальний тиск (САТ), діастолічний артеріальний тиск (ДАТ), середній артеріальний тиск та ПСШВСА. Основні вимірювання: в положенні лежачи на столі перед індукцією, через 3 хв після введення в наркоз в положенні лежачи та в положенні пляжного крісла (ППК). Індукцію та забезпечення загальною анестезію проводили сибазоном, пропофолом і фентанілом. Дані проаналізовано статистично. Методи описової статистики використовували для розрахунку середнього, стандартного відхилення, мінімального і максимального значень вибірки. Порівняння проводили за допомогою Т-тесту для повторних порівнянь з розрахунком різниці середніх зі стандартним відхиленням (M ± SD), критичного значення критерію (t) та його статистичної значущості (p). Для порівняння динаміки зміни параметрів було проведено загальний лінійний аналіз з визначенням значення критерію Піллаї та його значення. Аналіз проводився в пакеті IBM SPSS Statistics 20.0. Результати. Початкові дані САТ, ДАТ та середнього артеріального тиску достовірно знижувались після індукції та після позиціонування, але індукція не вплинула на показник ПСШВСА. Після позиціювання до ППК було констатовано значне зниження показників ПСШВСА. Висновки. Констатовано достовірне зниження САТ, ДАТ, середнього артеріального тиску після индукції та подальшого позиціювання хворих у ППК. Постіндукційна гіпотензія не впливає на динаміку ПСШВСА, але виявлено достовірне її зниження після позиціювання.

Comparison of grooved and conventional Macintosh laryngoscope blades for throat pack insertion: A randomized control trial.

Throat pack insertion is required for many otolaryngological surgeries under general anesthesia. To facilitate surgery, an oral Ring, Adair, and Elwyn (RAE) endotracheal tube is used. When the Macintosh blade is used to insert the pack, the tube often moves to the left as per its design. We designed a groove in the Macintosh laryngoscope blade to hold the endotracheal tube in place during pack placement. This study was done to compare the grooved and conventional Macintosh laryngoscope blades for throat pack insertion with respect to the intraoral movement of the tube, ease of packing, time taken, and associated hemodynamic changes in patients who have been intubated with a preformed oral endotracheal tube. This randomized control trial included 80 patients after approval from the institutional ethics committee and CTRI. Informed written consent was taken from all patients. Packing of cases was done with either grooved (group G) or conventional Macintosh laryngoscope blade (group C). Student's t-test, Chi-square test, and Mann-Whitney U test were used to analyze data. The tube remained in the center in 35/40 patients in group G as compared to 10/40 patients in group C (P < 0.0001). Packing the throat was significantly easier (P = 0.005), and time taken to pack the throat was shorter in group G as compared to group C (P = 0.0008). The endotracheal tube remains in the center more often during throat pack insertion using a grooved laryngoscope blade as compared to the conventional Macintosh laryngoscope blade. The grooved blade is easier to use and takes less time to insert the throat pack.

Description of Hemodynamic Changes in Section Caesarea Patients with Spina; Anesthesia in Sijunjung Regional General Hospital

Background: Every anesthetic action must Background: Every anesthetic action must pay attention to the patient's condition because this anesthetic action causes effects on all body systems, including hemodynamic changes in the patient's body. To see if there are hemodynamic changes that occur, blood pressure and pulse monitoring can be done during the Sectio Caesarea surgery process. Purpose: to know the description of hemodynamic changes in Sectio Caesaria patients with spinal anesthesia at Sijunjung Regional General Hospital. Methods: The type of research used is observational research with descriptive research type. The population in this study were all patients with cesarean section with spinal anesthesia at the Sijunjung Regional General Hospital in July - August with a sample size of 20 patients. Research instruments used ECG monitors and observation sheets using descriptive data analysis. Findings: blood pressure and pulse of respondents before spinal anesthesia were seen entirely, namely 20 respondents (100%) with normal blood pressure and pulse and after spinal anesthesia as many as 14 people (70%) experienced hypotension and 6 respondents (30%) with normal blood pressure. While the pulse rate in respondents after spinal anesthesia was 11 people (50%) experiencing tachycardia and 9 people (45%) with a normal pulse. Conclusion: then it means that there is a picture of hemodynamic changes in sectio caesaria patients with spinal anesthesia at the Sijunjung Regional General Hospital.

The Value of Portal Vein Diameter in Evaluation of Chronic Liver Disease

Abstract Background: Chronic liver disease (CLD) such as cirrhosis is a risk factor for hepatocellular carcinoma and as such requires a reliable diagnostic surveillance. Hemodynamic changes are detected early using ultrasound scan. Ultrasound has been found to be an accurate and noninvasive method of assessing the portal vein hemodynamic changes in patients with CLD. Materials and Methods: This was a prospective case–control study conducted over a period of 6 months at the Federal Teaching Hospital, Gombe between September 2015 and February 2016. Portal vein diameter (PVD) of 100 adult male and female CLD patients were compared with 100 age- and sex-matched controls. Ultrasonography of the portal vein was used using HD-9 Phillips (2010) ultrasound machine. Statistical Package for the Social Sciences (SPSS) Windows version 20.0 package was used for data analysis, with P ≤ 0.05 was considered statistically significant with a confidence interval of 95%. The variables were expressed as range and mean ± standard deviation. All comparison of variables was done using the Student’s t-test for CLD and control. Pearson’s correlation coefficients and point-biserial correlation coefficient were used for the correlation analysis. Results: The mean PVD in normal subjects was 1.07 ± 0.60 cm and the respective value for CLD subjects was 1.50 ± 0.21 cm. There was a statistically significant difference in PVD between normal and CLD subjects (P = 0.001). The PVD correlated positively with age and sex in both CLD and controls. Conclusion: The PVD was significantly higher in CLD subjects than controls. PVD correlated significantly with age and sex in both CLD subjects and controls.

Early hemodynamics after tibial transverse transport in patients with nonarterial stenosis and arterial stenosis diabetic foot.

The diagnosis of peripheral arteriopathy in the diabetic foot is complicated by diabetes and its advanced complications. It has been found that diabetic foot can be categorized into arterial stenosis and non-arterial stenosis, both of which have significant differences in hemodynamic characteristics. To evaluate the early hemodynamic changes in diabetic foot patients with nonarterial stenosis and arterial stenosis treated by tibial transverse transport (TTT) using high-frequency color Doppler ultrasonography (HFCDU) and a laser Doppler flowmeter. Twenty-five patients with Wagner grades 3-5 diabetic foot ulcers were treated with TTT, and the wound healing time and rate were recorded. Patients were grouped according to the results of preoperative lower-extremity ultrasonography. Cases with ≥ 50% stenosis in any of the femoral, popliteal, posterior tibial, anterior tibial, and peroneal arteries of the affected limb were classified as the arterial stenosis group (n = 16); otherwise, they were classified as the nonarterial stenosis group (n = 9). Before and one month after surgery, HFCDU was used to evaluate the degree of lower limb artery lesions and hemodynamic changes in patients. The degree of femoral-popliteal atherosclerotic stenosis, the degree of vascular stenosis and occlusion of the lower-knee outflow tract, and the degree of medial arterial calcification were scored; the three scores were added together to obtain the total score of lower extremity arteriopathy. PeriScanPIM3, a laser Doppler flowmeter system, was used to detect alterations in plantar microcirculation before and 1 mo after surgery. Wound healing and hemodynamic indices were compared between the two groups. The wound healing time of the diabetic foot was significantly shorter in the nonarterial stenosis group than in the arterial stenosis group (47.8 ± 13 vs 85.8 ± 26, P < 0.05), and the wound healing rate of both groups was 100%. The preoperative total lower extremity arteriopathy scores were lower in the nonarterial stenosis group than those in the arterial stenosis group (18.89 ± 8.87 vs 24.63 ± 3.52, P < 0.05). The nonarterial stenosis group showed higher preoperative popliteal artery (POA) blood flow than the arterial stenosis group (204.89 ± 80.76 cc/min vs 76.75 ± 48.49 cc/min, P < 0.05). Compared with the baseline (before surgery), the postoperative POA blood flow of the affected limb in the nonarterial stenosis group decreased one month after surgery (134.11 ± 47.84 cc/min vs 204.89 ± 80.76 cc/min, P < 0.05), while that in the arterial stenosis group increased (98.44 ± 30.73 cc/min vs 61.69 ± 21.70 cc/min, P < 0.05). Although the POA blood flow in the arterial stenosis group was obviously improved one month after surgery, it was still lower than that in the nonarterial stenosis group (98.44 ± 30.73 cc/min vs 134.11 ± 47.84 cc/min, P < 0.05). The nonarterial stenosis group had higher preoperative plantar microcirculation than the arterial stenosis group (56.1 ± 9.2 vs 33.2 ± 7.5, P < 0.05); compared with the baseline, the plantar microcirculation in the arterial stenosis group was significantly improved one month after surgery (51.9 ± 7.2, P < 0.05), while that in the nonarterial stenosis group was reduced (35.9 ± 7.2, P < 0.05). Based on preoperative HFCDU findings, diabetic foot patients can be divided into two categories: Those with nonarterial stenosis and those with arterial stenosis, with obvious differences in hemodynamic changes in the early postoperative period between them. In the early stage after TTT, the blood flow volume and velocity and the plantar microcirculation perfusion of the affected limb of the diabetic foot with nonarterial stenosis decreased compared with the baseline, while those of the diabetic foot with arterial stenosis improved significantly compared with the baseline, although both had smoothly healed diabetic foot ulcers.

Effect of thermal softening of double-lumen endobronchial tubes on postoperative sore throat in patients with prior SARS-CoV-2 infection: a randomized controlled trial

BackgroundThe incidence of postoperative sore throat (POST) after tracheal intubation using double-lumen endobronchial tubes (DLTs) is higher in patients with prior severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection than in the general population. This prospective trial was conducted to determine whether thermal softening of DLTs could decrease the incidence of POST or other airway injuries in patients with prior SARS-CoV-2 infection.MethodsA total of 120 patients with prior SARS-CoV-2 infection undergoing thoracoscopic surgery were randomly assigned to two groups (n = 60 each). In the thermal softening group, the distal portion of the DLT was placed in thermostatic saline (50 °C) for 10 min before endotracheal intubation. In the control group, the distal portion of the DLT was placed in room temperature saline for 10 min before endotracheal intubation. The incidence and severity of POST and hoarseness were assessed at 1, 6 and 24 h postoperatively. The primary outcomes were the incidence and severity of POST at 6 h postoperatively. The secondary outcomes were the incidence and severity of hoarseness, vocal cord and tracheal injuries, and hemodynamic changes in patients at intubation.ResultsThe incidence of POST at 6 h postoperatively was greater in the control group than in the thermal softening group [41 (68%) vs. 22 (37%), P = 0.001]. The overall incidence of POST at 24 h postoperatively was greater in the control group than in the thermal softening group [46 (76%) vs. 24 (40%), P < 0.001]. The overall incidence of tracheal injuries was also greater in the control group than in the thermal softening group (P = 0.016). Vocal cord injuries occurred more frequently in the control group than in the thermal softening group (P = 0.006).ConclusionThermal softening of DLTs before intubation can reduce the incidence of POST and airway injuries in patients with prior SARS-CoV-2 infection undergoing DLT insertion.Trial registrationThis trial has been registered at www.chictr.org.cn (registration number: ChiCTR2200066821; registration date: December 19, 2022).

Longitudinal Characterization of Hemodynamic Changes with Multimodal Optical Techniques in Patients with Sickle Cell Disease Treated with Mitapivat

The physiological impacts of sickle cell disease (SCD) are widespread and severe if left untreated. Sickled RBCs initiate vaso-occlusion (VOC) and have altered biomechanical properties that negatively affect blood rheology and microvascular hemodynamics in patients with SCD. Therapeutics can target different mechanistic pathways including reduction of hemoglobin S (HbS) polymerization, oxidative stress, or inflammation. There is an unmet need for non-invasive, point-of-care technologies that characterize the microvascular hemodynamics in SCD which could potentially broaden understanding of the underlying pathophysiology and supplement a clinician's ability to monitor therapeutic changes. Current clinical approaches can be time- and resource- intensive which limit their accessibility. Near-infrared spectroscopy (NIRS) is a non-invasive, optical technique that quantifies microvascular hemodynamics including hemoglobin (Hb) concentration, tissue oxygen saturation (StO 2), and blood flow (Cerussi et al, 2005). We evaluate the sensitivity of NIRS technologies to hemodynamic changes in patients with SCD undergoing treatment with mitapivat, an investigational oral allosteric activator of pyruvate kinase (PK), and compare the optical changes to changes in standard hematology markers with regard to the initial response and consistency of the response over time. Fifteen patientswith HbSSwere enrolled in a study (ClinicalTrials.gov, NCT04610866) evaluating the long-term safety and tolerability of mitapivat in patients with SCD. We performed an optical hemodynamic assessment for each patient for a total of eight study visits over the span of a year including at baseline prior to drug initiation. NIRS probes were affixed to the forearm and forehead to collect hemodynamic information characteristic of brain and skeletal muscle while performing a brachial cuff occlusion challenge. We quantified concentration of oxy- and deoxy- Hb as well as StO 2 during the resting baseline prior to the occlusion. Additionally, we analyzed the post-occlusion reactive hyperemic response to assess vascular reactivity. Analysis was focused on quantifying the degree of change due to mitapivat treatment as well as the consistency of the response over the course of a year. Optical metrics were first compared against changes in Hb (Quang et, 2022) and then evaluated for consistency throughout the rest of the study period. Nine out of 15 patients were assessed as baseline NIRS data were not available for six patients.We calculated optical hemodynamic metrics for all 72 measurement visits; two visits were excluded due to poor NIRS data quality. Figure 1A shows a typical measurement setup with NIRS probes acquiring simultaneous measurements from the forehead and forearm. Figure 1B compares the mean Hb level, mean forehead StO 2, and mean forearm StO 2 across the first year of treatment. Over the first six months, we observed an increase in forehead StO 2 from 56% to 60% and forearm StO 2 from 59% to 63%; blood Hb levels exhibited a similar increase going from 8.5 g/dL to 9.8 g/dL; this increase was sustained over the second six months for all three parameters. Average forehead StO 2 remained +3.6% above baseline while forearm StO 2 remained +1.7% above baseline at the end of a year. NIRS can non-invasively provide objective measures of tissue composition, metabolism and vascular reactivity and can be performed in a simple manner with a series of simple perturbations.In this limited dataset, we have demonstrated that NIRS appears to reflect changes in Hb related to mitapivat both in response to an acute change and over an extended period. Furthermore, we observed that on average, the NIRS responses were consistently elevated throughout the course of the year, mirroring what was observed in the blood Hb levels. Hemodynamic changes appear to be more easily observed in the brain rather than the skeletal muscle. Our data suggest that NIRS could be an adjunct for non-invasive hemodynamic monitoring in patients with SCD undergoing treatment.

The Effect of Exercise Training as Adjuvant Treatment on Functional Capacity in Congenital Heart Disease with Negative Vaso Reactivity Test Pulmonary Hypertension Patient at Saiful Anwar Hospital Malang

Background: Pulmonary hypertension associated with congenital heart disease (CHD) is an important subgroup that accounts for approximately 11% of all patients with PAH. Physical limitations are one of the main symptoms of hemodynamic changes in patients with PH. Objective: This study aimed to evaluate the effect of physical exercise therapy for 12 weeks as an additional therapy with PDE-5 inhibitors on the functional capacity of patients with Congenital Heart Disease accompanied by Pulmonary Artery Hypertension (CHD – PH). Method: This research was an analytic experimental study with a prospective cohort research method. This study used data sources obtained from medical records to adjust subjects based on inclusion and exclusion criteria, initial cardiac training test examination data was carried out at IPJT in patients selected as subjects. The patient's clinical outcomes were followed in the next 12 weeks. Result: This research was conducted on 16 samples divided into two groups, namely the control and study groups. The evaluation after 12 weeks found that there was an increase in mileage as measured through the 6MWT submaximal test and a better duration of physical activity in the study group tested through the Endurance Shuttle Walk Test (ESWT). This is consistent with the effect of physical exercise, which suppresses systemic inflammation and causes vasodilation, thereby increasing oxygen delivery to the tissues. This causes more optimal aerobic metabolism and reduces lactate production. So that the patient did not quickly feel tired during activities. However, there was no significant increase in the Incremental Shuttle Walk Test. This could be due to the relatively short training duration of 12 weeks. Conclusion: A positive correlation exists between physical exercise and increased functional capacity of patients with CHD who were evaluated using 6MWT and ESWT.

Hemodynamic Changes in Patients with Chronic Internal Carotid Artery Occlusion After Recanalization.

This study aimed to investigate the feasibility and clinical efficacy of endovascular recanalization in patients with chronic internal carotid artery occlusion (CICAO) and explore the application value of computed tomography perfusion (CTP) in endovascular recanalization. This non-randomized controlled study included 41 patients with CICAO. All patients received active medical treatment. In this study, patients with successful endovascular recanalization and those who refused endovascular recanalization were included in the recanalization and medication groups, respectively. Before and 90 days after treatment, cognitive function was evaluated using the Montreal Cognitive Function Assessment, and neurological function was evaluated using the National Institutes of Health Stroke Scale and modified Rankin scale. For patients with successful endovascular recanalization, brain CTP imaging was performed to evaluate hemodynamic changes in patients with CICAO before and three days after treatment. Overall, 41 symptomatic patients with CICAO were included, and 20 patients received endovascular recanalization therapy, with a success rate of 60% (12/20). The perioperative complication rate was 15% (3/20); there were no events such as hyperperfusion, distal embolism, vascular rupture, or cerebral hemorrhage, and no stroke-related or death-related events. Patients were divided into a medication group (n=21) and recanalization group (n=12). After 90 days of follow-up, patients in the recanalization group showed greater improvement in overall cognitive and neurological function. In addition, successful endovascular recanalization significantly improved cerebral blood perfusion on the occluded side of patients with CICAO. Successful recanalization can effectively improve the overall cognitive and neurological functions of patients in the short term. CTP can be used to quantitatively evaluate not only the cerebral hemodynamic changes after internal carotid artery occlusion but also the improvement of cerebral blood perfusion after successful endovascular recanalization, which provides a reliable method for postoperative follow-up.

Efficacy of Laryngeal Mask Airway Impregnation with Diltiazem Gel on Hemodynamic Changes in Patients with Hypertension Undergoing Phacoemulsification Surgery: A Randomized Clinical Trial

Background: Airway control problems are among the most prevalent causes of anesthesia-related mortality and morbidity. Some devices provide patients with adequate oxygen supply and ventilation during surgery by creating a safe airway in anesthetized patients. One of these devices is the laryngeal mask airway (LMA). The compression and painful stimuli following the LMA cuff inflation can lead to hemodynamic changes. Diltiazem gel is used in the control and treatment of hypertension (HTN) and heart arrhythmia and is absorbed through the tracheal mucosa. Objectives: By assuming that diltiazem gel is superior to other drugs used to prevent arrhythmias and hemodynamic changes during surgery, this study aimed to evaluate the effect of LMA impregnation with diltiazem gel, compared to lubricant gel. Methods: This study was conducted as a double-blind, randomized clinical trial on 80 participants with HTN who were candidates for phacoemulsification (phaco) surgery in Imam Khomeini Hospital, Kermanshah, Iran. The participants were assigned to an intervention (LMA impregnated with diltiazem gel) and a control group (LMA impregnated with lubricant gel) through the block random method in the form of 40 blocks of 2 using a random-numbers table. Hemodynamic changes (systolic and diastolic blood pressure and heart rate) were measured before, immediately after, 5 min, and 15 min after intubation, during surgery every 15 min, upon entering the recovery unit, and 15 and 30 min after entering the recovery unit. Results: The mean systolic and diastolic blood pressure in the intervention group showed a significant decrease, compared to that in the control group. A significant difference was also observed in the mean heart rate difference between the two study groups, but only at the beginning of the study (P&lt;0.05). Additionally, according to the results of repeated measures analysis of variance, the mean of the measured variables showed a significant difference at different measurement times in the intervention group (P&lt;0.05). Conclusion: The findings supported the effectiveness of diltiazem gel in reducing blood pressure, especially in the final stages of surgery, decreasing the number of premature ventricular contractions, and controlling normal breathing. Therefore, specialists and surgeons can use diltiazem gel to control the hemodynamic status of patients.

Renal hemodynamic changes in patients with type 2 diabetes and their clinical impact

The dysfunction of the internal mechanics within the kidney's filtering units, known as glomeruli, has been linked to the emergence and progression of diabetic kidney disease (DKD). To better understand this crucial aspect of kidney function and the pathology of DKD, a variety of methods are employed in research, from the introduction of external compounds, such as inulin, iohexol, iothalamate and p-aminohippurate, to cutting-edge imaging techniques and computational analysis.Given the significance of intraglomerular hemodynamic dysfunction in the pathogenesis and treatment of DKD, it is essential to thoroughly examine the available data on this topic. Accordingly, the aim of this review is to provide a comprehensive appraisal of the role of intraglomerular hemodynamic dysfunction in the development of DKD and the effects of current therapies used to mitigate DKD. Through this analysis, we can gain a deeper understanding of the complex pathogenesis of DKD and potentially discover new avenues for tailored therapeutic management of patients with DKD.

Echocardiographic and hemodynamic changes in patients with high-grade varicocele.

Varicocele is abnormal tortuosity and dilatation of the pampiniform plexus veins within the spermatic cord. Varicocele is associated with testicular atrophy, hypogonadism, impaired semen analysis values, or decreased testosterone production. Varicocele is a progressive disease and should be treated because it may be a systemic disease that can be associated with cardiovascular abnormalities. We hypothesize in this study that cardiovascular and hemodynamic pathologies may occur in varicocele patients. In this prospective, multicentric, multidisciplinary study, patients diagnosed with high-grade left varicocele in the urology clinic underwent semen analysis, total testosterone determination, and scrotal Doppler ultrasonography. In addition, blood pressure measurement and echocardiographic evaluation were performed by blinded cardiologists in both the varicocele patients and the healthy control group. The study was carried out with 103 varicocele patients and 133 healthy individuals who formed the control group. Diastolic blood pressure (P = 0.016), left ventricular end diastolic (P < 0.001) and systolic diameter (P < 0.001), ejection fraction (P < 0.001), pulmonary arterial pressure (P < 0.001), and aortic distensibility (P < 0.001) values were significantly higher in varicocele patients compared with controls; interventricular septum wall thickness (P = 0.022), aortic systolic (P < 0.001) and diastolic diameter (P < 0.001), aortic systolic (P < 0.001) and diastolic diameter index (P < 0.001), and aortic stiffness index (P < 0.001) values were significantly lower in varicocele patients. The mean aortic distensibility of non-normozoospermic group was lower than that of normozoospermic group (P = 0.041). There was no statistically significant relationship between thickest vein diameter in spermatic cord and cardiological parameters. This study showed that symptomatic patients with high-grade varicocele had a higher risk of cardiovascular and hemodynamic disease. We recommend that men with high-grade symptomatic varicocele with impaired semen analysis undergo cardiovascular and hemodynamic evaluation regardless of their spermatic vein diameter.