View clinical trials related to Hypotension.
Filter by:The goal of this randomized clinical trial is to compare different types of advanced hemodynamic monitoring in patients undergoing major abdominal surgery. Participants undergoing major abdominal surgery will receive anesthesia with two different types of hemodynamic monitoring - group A will receive arterial pressure cardiac output algorithm with the FloTrac sensor and group B will receive hemodynamic monitoring with the Hypotension Prediction Index. The main question the study aims to answer is: • will the hypotension prediction index algorithm reduce the rate of hypotension in comparison to arterial pressure cardiac output algorithm.
The goal of this medtech clinical trial is to develop and evaluate a machine learning algoritm to predict low blood pressure episodes during major surgery. The main questions it aims to answer are: - Could a novel method for cardiac output estimation through alterations in carbon dioxide improve the performance of a blood pressure based algoritm in order to predict low blood pressure episodes during major abdominal surgery? - Will the predictive performance of the algoritm improve with the addition of other patient specific data? - Do the estimated cardiac output and central venous saturation by the novel method agree with our invasive arterial pressure method for cardiac output, and samples via a central venous line, respectively? 300 participants will be anesthetized with total intravenous anesthesia and ventilated with the novel carbon dioxide based method, and arterial and central venous blood gases will be taken regularly throughout the operation. All physiological data will be stored for later analyses and development of the algoritm by machine learning methods. No other invasive interventions will be performed outside our standard clinical peroperative protocol.
Controlled hypotension application is a commonly preferred anesthesia practice during surgical procedures, particularly in regions with rich tissue perfusion, aiming to reduce bleeding, enhance surgical field visibility, and mitigate potential complications. Preserving blood flow, especially to the brain, heart, and kidneys, is vital during this method. Previous studies on the subject have primarily focused on short-term effects regarding cognitive impairments, with limited research on the long-term impacts. In our study, we aim to investigate how controlled hypotension application, administered to patients undergoing rhinoplasty or septoplasty surgery, specifically affects cerebral blood flow and its potential consequences on the development of short-term/medium-term/long-term cognitive impairments or delirium in the postoperative period.
TAPSE, one of the methods for evaluating right ventricular systolic function; It is a bar parameter that can easily measure apex-basal shortening and provides specific information about global RV function. TAPSE/PASP can be calculated as load-independent parameters to evaluate RV function. Because RV function is sensitive to change in afterload, known as the RV-pulmonary circulation (PC) connection. This study aims to identify patients who are candidates for hypotensive events due to general anesthesia in a hemodynamically stable population.
This research aimed to evaluate and compare the role of carotid corrected flow time (FTc) and electrical cardiometry (EC) in the prediction and prevention of post-spinal hypotension in elective cesarian section.
The main objective of this clinical study is to determine the effectiveness of BIS-guided propofol administration in avoiding hypotension during propofol induction in geriatric patients. The primary question it aims to answer is whether the mean arterial pressure can be maintained above 60mmHg with BIS-guided propofol induction. For this purpose, the observer's alertness sedation score will be compared with bispectral index-guided inductions.
Examining the advantages associated with the utilization of noradrenaline in preventing spinal hypotension during cesarean births. This involves assessing the positive outcomes and potential benefits derived from incorporating noradrenaline into the medical approach.
Neuraxial blockade such as spinal anaesthesia can cause severe hypotension due to pharmacological sympathectomy resulting in potential deleterious consequences for the patient, Prevention of this spinal anaesthesia induced hypotension is of utmost importance, Techniques currently in use for preventing hypotension include intravenous fluid prehydration, sympathomimetic drugs, and physical methods such as positioning and leg compression. Midodrine is an orally active α-adrenergic agonist ,Used in clinical management of patients with orthostatic hypotension or hypotension secondary to other clinical conditions or drug therapies. Midodrine is almost completely absorbed after oral administration and undergoes enzymatic hydrolysis to form its pharmacologically active metabolite, de-glymidodrine , causes venous and arterial vasoconstriction through stimulation of α1- receptors located in the vasculature, However ,Midodrine may cause several side effects as chills ,numbness , tingling ,paresthesia ,polyuria ,dysuria and headache. On the other hand, Norepinephrine is a vasoconstrictor that predominantly stimulates α1 receptors to cause peripheral vasoconstriction and increase blood pressure. It also has some β1 receptor agonist activity that results in a positive inotropic effect on the heart at higher doses. Norepinephrine also may cause side effects as headache, blurred vision, chest pain ,nervousness, bradycardia or tachycardia.
The present study investigates the involvement of the gut hormone glucose-dependent insulinotropic polypeptide (GIP) in the pathophysiology of postprandial hypotension (PPH)
In elderly patients with cardiac diseases, changes in cardiovascular physiology diminish cardiovascular reserve and predispose to significant hemodynamic instability after spinal anesthesia; hence, such patients could be at risk of postoperative complications. Additionally, point of care ultrasound (POCUS) and transthoracic echocardiography (TTE) are used in clinical practice to evaluate cardiovascular hemodynamics. Inferior vena cava (IVC) and its collapsibility index (CI) have been used in clinical practice for the prediction of post-spinal hypotension. Specifically, the dIVCmax-to-IVCCI ratio < 48 showed high diagnostic performance among other indices in the prediction of post spinal hypotension in elderly patients with cardiac diseases undergoing proximal fracture repair. According to the above findings, the investigators hypothesized that fluid co-loading immediately after spinal anesthesia can lower the incidence of spinal-induced hypotension in patients with dIVCmax-to-IVCCI ratio < 48. For this reason, it is prospectively evaluated echocardiographic indices of the LV and the right ventricle (RV), as well as of the IVC prior to spinal anesthesia in elderly patients with proximal femur fractures who had low LV-EF.