Active clinical trials for "Hypotension"

This study examines the effect of obesity and gender on postexercise hypotension with three different randomized exercise protocols or varying intensity. Subjects will be separated into obese and non-obese groups and then further by gender. From there, they will be put through a control, continuous exercise bout, and aerobic interval bout of exercise in a randomized order over three visits. Post exercise blood pressure, as well as other non-invasive cardiac measures will be taken over a 4 hour period.

The main purpose of this study is to determine the effects of controlling the heart rate of patients with septic shock using an intravenous medication called esmolol.

A Phase 3, 22-week, Multi-center, Randomized Withdrawal Study of ampreloxetine in Treating Symptomatic Neurogenic Orthostatic Hypotension in Subjects with Primary Autonomic Failure

Evaluate the clinical efficacy and safety of droxidopa versus placebo over a 17 week (maximum) treatment period in patients with symptomatic NOH.

The objective of our study is to determine the correlation of transthoracic ultrasonographic indices of fluid responsiveness to changes in direct measures of cardiac output and to compare them to other established predictors of fluid responsiveness such as central venous pressure variation, systolic arterial pressure variation and pulse pressure variation in a broad population of patients. Hypothesis: There will be a significant difference in the inferior vena cava respiratory variation and subclavian vein respiratory variation between responders and non-responders to intravenous fluid challenge in a broad population of patients with shock.

A subset of patients suffering from chronic fatigue syndrome exhibit symptoms of neurally mediated hypotension. While the underlying pathophysiology of chronic fatigue syndrome is not precisely understood, a dysfunction of the autonomic nervous system is thought to play a role in this subset of patients. In several small studies, subjects within this subset have noted improvement in their chronic fatigue symptoms when treated for their neurally mediated hypotension. As droxidopa acts on the autonomic nervous system and has been shown to ameliorate symptoms of neurally mediated hypotension, it is hypothesized that droxidopa could aid in the treatment of chronic fatigue symptoms. Neurally mediated hypotension has been associated with patients suffering from chronic fatigue syndrome. Droxidopa meanwhile has been approved in Japan for the treatment of the symptoms of neurogenic orthostatic hypotension. As such, it is hypothesized that regulating the autonomic nervous system in patients with Chronic fatigue syndrome may prove to be clinically beneficial.

The goal of this observational study is to develop a computation model for accurately predicting post-induction hypotension in patients receiving laparoscopic surgery under general anesthesia. The main question[s] it aims to answer are: • whether the corresponding characteristics on pressure wave forms could be use to predict post-induction hypotension. Participants will be observed before and after induction of general anesthesia for non-invasive arterial pressure wave forms and blood pressure changes.

Orthostatic hypotension following total hip arthroplasty is known to limit the ability of patients to perform physical therapy (PT) and increase the length of hospital stay and costs. Our goal is to prospectively study the effects of oral midodrine on the signs and symptoms of orthostatic hypotension in 20 patients and the effects of intravenous fluid on the signs of symptoms of orthostatic hypotension in 10 patients. Midodrine will be administered to patients with suspected low SVV, and an intravenous fluid bolus will be administered to patients with low CO. 120 patients will be consented with a view to studying 30 patients who meet the inclusion criteria for orthostatic hypotension. Patients who receive midodrine or the fluid bolus will undergo hemodynamic measurements at 30 min, 1 hr, 2 hrs, 3 hrs, and 4 hrs post-intervention. All patients will undergo measurements for blood pressure, arterial augmentation index, and heart rate at baseline (pre-op; holding area) and the time of first PT attempt. Patients will be monitored up to post-operative day 3. The working hypothesis is that midodrine or fluid therapy will significantly raise the mean arterial blood pressure (MAP) by 5 mmHg+ and/or cause a significant change in the Orthostatic Hypotension Questionnaire (characterized by a two-point improvement in symptom score).

Paravertebral analgesia is non-inferior to epidural analgesia for pain control and superior to epidural analgesia in terms of the main complication of hypotension.

The premise of this study is that enteral tranexamic acid will help to maintain small bowel integrity, which is often compromised by critical illness due to inadequate cardiovascular perfusion (i.e., shock), and that maintenance of small bowel integrity will decrease morbidity in critically ill patients.