View clinical trials related to Hypotension.
Filter by:The effects on brain perfusion of the two currently vasopressors used to treat accidental hypotension occurring during carotid surgery (i.e. ephedrine and phenylephrine) is not known, but a disadvantage to use phenylephrine is suspected, due to its mechanism of action and according to published reports
This study is attached to a comprehensive quality assurance/quality improvement (QA/QI) program conducted by the Office of the medical director, and is designed to contribute to generalizable knowledge to determine effectiveness and tolerability of an FDA approved Impedance Threshold Device (ITD) device in a large urban emergency medical service (EMS) system. The cohort will comprise a convenience sample of patients that are being treated by EMS for a hypotensive emergency.
The aim of the present work was to analyze the short-term variability of SO2 during hemodialysis in sessions with and without hypotension to correlate the SO2 variability to hemodynamic instability.
It is very common for hemodialysis patients to have problems with low blood pressure while on hemodialysis. Low blood pressure on dialysis is not a good thing and it is associated with an increased risk of death and hospitalizations. It might be possible to minimize or even prevent these low blood pressure episodes with a software that can be added to the dialysis machine which detects the patient's changes in blood pressure and automatically slows down how much fluid is being removed from the person. The investigators hypothesize that a blood pressure guided biofeedback system (called BioLogics RR) will result in a 30% reduction in the number of hypotensive episodes on hemodialysis.
This study was conducted to evaluate the effects of rapid crystalloid (Lactated Ringer's solution) or colloid (hydroxyethyl starch; HES) cohydration with a second intravenous access line on the incidence of hypotension and ephedrine requirement during spinal anaesthesia for caesarean section.
Hypotension after spinal anesthesia for cesarean delivery occurs frequently. Oscillometric measurement gives intermittent informations. Nexfin, a continuous noninvasive device, could help to detect hypotension.
The perioperative hemodynamic management aims to ensure organ perfusion pressure and an oxygen arterial transport adapted to oxygen consumption. Phenylephrine is the α-adrenergic agonist widely used during anesthesia for arterial pressure control. Several questions on phenylephrine global and regional hemodynamics effects remain unresolved. The investigators assume that Phenylephrine may decrease cardiac output by increasing the afterload, while most likely could also make an increase or a stability of cardiac output by action on the venous return. The investigators propose an observational study assessing the influence of preload dependence, defined by the values of pulse pressure variation, on the effect of phenylephrine on cardiac output, measured beat by beat by esophageal Doppler. The aim of the investigators work is to improve the understanding of phenylephrine action, a daily use therapeutic action, to improve the patients care.
The aim of this study is to examine the efficacy of 5 mg Midodrine (Gutron) vs. placebo on reducing the incidence of orthostatic hypotension during mobilization 6 h after a total hip arthroplasty.
An International, multicenter, epidemiological observational study investigating the prevalence of Transthyretin-Related Familial Amyloidotic Polyneuropathy (TTR-FAP) in participants with small fiber polyneuropathy of no obvious etiology.
Patients undergoing surgery in beach chair position (BCP) are at risk for cerebral ischaemia. The impacts of arginine vasopressin (AVP) on haemodynamics and cerebral oxygenation are evaluated during surgery in BCP.