Active clinical trials for "Hypotension"

The goal of this clinical trial is to evaluate the effect of transcutaneous spinal cord stimulation on blood pressure in individuals with an acute spinal cord injury (within 30 days of injury). Blood pressure instability, specifically orthostatic hypotension (a drop in blood pressure when moving lying flat on your back to an upright position), appears early after the injury and often significantly interferes with participation in the critical rehabilitation time period. The main questions it aims to answer are: Can optimal spinal stimulation increase blood pressure and resolve orthostatic symptoms (such as dizziness and nausea) when individuals undergo an orthostatic provocation (a sit-up test)? Optimal stimulation and sham stimulation (which is similar to a placebo treatment) will be compared. What are the various spinal sites and stimulation parameters that can be used to increase and stabilize blood pressure to the normal range of 110-120 mmHg? Participants will undergo orthostatic tests (lying on a bed that starts out flat and then moved into an upright seated position by raising the head of bed by 90° and dropping the base of the bed by 90° from the knee) with optimal and sham stimulation, and their blood pressure measurements will be evaluated and compared.

This study is a multicenter randomized controlled trial comparing two strategies of mean arterial blood pressure management (MAP ≥ 80mmHg vs MAP ≥ 65 mmHg) in high-risk surgical patients undergoing elective laparotomic/laparoscopic surgery.

The primary purpose of this investigation is to determine whether water carbonation can improve orthostatic tolerance in healthy control volunteers. Orthostatic tolerance refers to the ability to maintain an adequate blood pressure when standing. In some individuals blood pressure can fall when standing, predisposing to dizzy spells or fainting episodes. Drinking water can boost blood pressure and making fainting episodes less likely. However, it is not clear whether the carbonation of the water has any further impact on the blood pressure response. This is important because it may be that carbonated water expands the stomach (gastric distension), provoking an increase in sympathetic activity. The increase in sympathetic nervous system activity boosts blood pressure. Resolving this question would have important implications for patients with syncope. This study will test whether carbonated water will have any further impact on blood pressure than the already known effect of non-carbonated water.

Introduction: Orthostatic hypotension (OH) increases the risk of cognitive impairment in adults. Recent big data studies have demonstrated that add-on Astragalus can improve OH state. In vitro studies have revealed that Astragalus possesses anti-inflammatory, antioxidative, and neuroprotective effects. However, the clinical effects of add-on Astragalus in improving cognition in these patients remain unclear. Therefore, this pragmatic clinical trial aims to determine the efficacy and safety of add-on Astragalus in improving cognition in patients with OH, elucidate the underlying mechanisms, identify related response predictors, and explore effective drug components. Methods and analysis: This is an add-on, assessor-blinded, parallel, pragmatic, randomized controlled trial. At least 88 adults with OH aged >30 years will be recruited. Participants will be randomized in a 1:1 ratio to receive 24 weeks of routine care or add-on Astragalus. The primary efficacy outcome will be measured by the Montreal Cognitive Assessment-Chinese version score. Secondary efficacy outcome assessment will include neuropsychological tests, blood pressure, plasma biomarkers, multimodal electroencephalograms, and neuroimaging. Safety outcome measures will include physical examinations, vital signs, electrocardiography, laboratory tests (such as hematologic and blood chemical tests), and adverse event records. Recruitment began on June 20, 2023. Ethics and dissemination: The Ethics Committee of Fujian Medical University Union Hospital has approved this study (2021KJCX040).

The purpose of this study is to investigate the effectiveness of ondansetron for postspinal anesthesia hypotension in patients undergoing cesarean section.

Critically ill patients with acute kidney injury and fluid overload who are frequently treated by fluid removal during dialysis are at an increased risk of complications and death. Both slower and faster rates of fluid removal may cause injury to the vital organs. This proposed clinical trial will examine the feasibility of restrictive compared with a liberal rate of fluid removal in order to develop effective treatments for fluid overload and to improve the health of critically ill patients.

The purpose of this study is to investigate whether protocolized vasopressor use for patients with normal blood pressure undergoing rapid sequence intubation improves hemodynamic parameters and mitigates adverse events. The hypothesis is that use of vasopressors during Rapid Sequence Intubation will prevent substantial decreases in blood pressure when compared to normal intravenous fluids.

Rates of major complications and mortality in the first weeks after surgery remain very high: postoperative mortality is still around 2% in central Europe and the United States. Postoperative deaths are a consequence of postoperative complications. Postoperative complications that are most strongly associated with postoperative death include acute kidney injury and acute myocardial injury. To avoid postoperative complications it is thus crucial to identify and address modifiable risk factors for complications. One of these modifiable risk factors may be intraoperative hypotension. Intraoperative hypotension is associated with major postoperative complications including acute kidney injury, acute myocardial injury, and death. It remains unknown which blood pressure value should be targeted in the individual patient during surgery to avoid physiologically important intraoperative hypotension. In current clinical practice, an absolute mean arterial pressure threshold of 65mmHg is used as a lower "one-size-fits-all" intervention threshold. This "population harm threshold" is based on the results of retrospective studies. However, using this population harm threshold for all patients ignores the obvious fact that blood pressure varies considerably among individuals. In contrast to current "one-size-fits-all" perioperative blood pressure management, the investigators propose the concept of personalized perioperative blood pressure management. Specifically, the investigators propose to test the hypothesis that personalized perioperative blood pressure management reduces the incidence of a composite outcome of acute kidney injury, acute myocardial injury, non-fatal cardiac arrest, and death within 7 days after surgery compared to routine blood pressure management in high-risk patients having major abdominal surgery. The investigators will perform preoperative automated blood pressure monitoring for one night to define individual intraoperative blood pressure targets. Automated blood pressure monitoring is the clinical reference method to assess blood pressure profiles. The mission of the trial is to reduce postoperative morbidity and mortality after major surgery. The vision is to achieve this improvement in patient outcome by using the innovative concept of personalized perioperative blood pressure management. This trial is expected to change and improve current clinical practice and will have a direct impact on perioperative blood pressure management guidelines.

LIVER PAM A randomized, controled, open and unicentric trial comparing high (MAP 85-90 mmHg) and low (65-70 mmHg) target of mean arterial pressure in the first 24 hours after liver transplantation.

The purpose of this study is to compare the incidence of hypotension between remimazolam and propofol for intraoperative sedation in patients undergoing hip surgery with spinal anesthesia.