View clinical trials related to Hypotension.
Filter by:Patient undergoing general anesthesia in elective surgery will be assigned to receive either methohexital or propofol general anesthesia. Hypotensive events during the first 15 minutes of induction will be compared between the groups to ascertain which drug is less likely to cause a hypotensive event.
The purpose of this study is to explore the neurohumoral mechanism of deferent frequency TEAS pretreatment.
Previous research has identified spontaneous cerebral spinal fluid leakage as a cause for spontaneous intracranial hypotension, leading to positional headache patterns. Typical magnetic resonance imaging findings include subdural fluid collections, enhancement of pachymenginges, engorgement of venous structures, pituitary hyperemia, and sagging of the brain (SEEPS). Because pituitary hyperemia has been documented in cases of spontaneous cerebral spinal fluid leakage and is known to mimic a pituitary tumor or hyperplasia, the investigators would like to like to assess the clinical manifestations and neuroimaging abnormalities of SIH patients with regard to the pituitary gland. Specifically, the investigators are looking to analyze the compression of the pituitary stalk and conduct a systemic evaluation of pituitary function in SIH patients.
Pharmacologic approaches to increase levels or actions of the vasodilatory peptide angiotensin-(1-7) are currently in development for the treatment of hypertension based on findings from animal models. There are limited and contradictory clinical studies, however, and it is not clear if this peptide regulates blood pressure in humans. The purpose of this study is to better understand the cardiovascular effects angiotensin-(1-7) in human hypertension, and to examine interactions of this peptide with the autonomic nervous system. The investigators propose that the difficulties in showing angiotensin-(1-7) cardiovascular effects in previous clinical studies relates to the buffering capacity of the baroreceptor reflex to prevent changes in blood pressure. Autonomic failure provides the ideal patient population to test this hypothesis. These patients have loss of baroreflex buffering and have low levels of angiotensin-(1-7) in blood. The investigators will test if angiotensin-(1-7) infusion can lower blood pressure in patients with autonomic failure, and will determine the hemodynamic and hormonal mechanisms involved in this effect.
To evaluate the time to treatment intervention in patients with Parkinson's Disease (PD), Multiple System Atrophy (MSA), Pure Autonomic Failure (PAF), Non-Diabetic Autonomic Neuropathy (NDAN) or Dopamine Beta Hydroxylase (DBH) Deficiency who have been previously stabilized with droxidopa therapy for symptoms of neurogenic orthostatic hypotension (NOH) (dizziness, light-headedness, or feelings that they are about to black out)
This study is to assess the feasibility of 2 different ultrasound views of the inferior vena cava (IVC), a large vein that returns blood to the heart. Ultrasound is safe in pregnancy and, is regularly used to evaluate the fetus. It is hoped that imaging of the IVC will then allow us to determine the fluid status of the parturient which could be helpful in treating hemodynamic instability. This study will not involve any change in management of the participating patients.
This clinical study is to observe the improvement of MHD (maintenance hemodialysis) patients, quality of life，after applying therapy combining Auriculotherapy and Shengmai capsule. As a compliment to each other, Traditional Chinese Medicine and Modern Medicine form a joint and help improving life quality of MHD patients. Through the therapy, MHD patients, symptoms of thirst are improved, the incidence of intradialytic hypotension is reduced, the intake of water and sodium is lessen and the weight gain during dialysis is controlled, which consequently reduce cardiovascular and cerebrovascular complications and eventually reduce the mortality of MHD patients. Aiming to improve patients, thirst symptom and reduce the incidence of intradialytic hypotension, this study prospectively followed 144 MHD patients using multicenter prospective randomized crossover controlled clinical studies, using KT/V, URR, improvement of thirst, blood pressure and cognitive assessment as observational index. Multiple questionnaire surveys are conducted to understand patients, life quality from different angle. The use of Auriculotherapy is simple and effective and Shengmai capsule conforms to patients, syndrome, which is consistent with TCMs principle of "syndrome differentiation and treatment"and the theory of preventive treatment. The study not only expends the use of TMC in hemodialysis treatment, but also suggests a set of easy therapeutic schedules to improve the quality of life in patients receiving hemodialysis treatment.
This prospective, double-blinded, randomized, controlled study was undertaken to evaluate whether warming IV fluids (37 oC) resulted in lower incidence of hypotension, less ephedrine and transfusion requirement and lower fluid consumption than use of room-temperature fluids (22 oC) in cesarean delivery patients undergoing spinal anesthesia.
Background: The active video game (VGA) it has been studied how much to the physiological factors of your practice. The objective was to determine whether an AVG session promotes post-exercise hypotension (PEH) similar to walking exercise. Methods: Fifteen hypertensive (49.0 ± 1.6 years), both genders performed five randomized sessions, lasting 60 minutes: 1) AVG, 2) sedentary video game (SVG), 3) walk treadmill with moderate intensity (WMI), 4) walk treadmill with similar intensity to VGA (WGI), and 5) control without exercise (CON). Intensity was determined by Heart rate (HR) and Perceived Exertion (PE). Blood pressure (BP) and cardiac autonomic modulation (CAM) measurements were taken at rest and every 10 minutes post exercise for 60 minutes.
Background: Poor spinal anaesthesia block is common and is difficult to manage; so a technique to minimize its incidence is advisable. Hypotension is the commonest problem with spinal anesthesia. Multiple trials to prevent or combat hypotension using positional changes, fluid therapy and the use of vasopressors were tried. However, the drug choice and mode of administration as either bolus or infusion is still a matter of debate. Objectives: To compare the outcome of spinal injection of hyperbaric bupivacaine and fentanyl separately to standard injection of mixed fentanyl with hyperbaric bupivacaine. Design: A randomized, controlled clinical trial. Setting: Single medical center from 5/2013 to 10/2014. Patients & Methods: 124 parturient scheduled for elective cesarean section (CS) were randomly allocated into two groups, each 62 parturient: Group M received spinal anesthesia using 10 mg bupivacaine 0.5% premixed with 25 µg fentanyl in the same syringe and Group S received 25 µg fentanyl in one syringe and 10 mg bupivacaine 0.5% without barbotage in a second syringe. Intravenous fluid co-load with 15 ml/kg warm lactated ringer solution was started as fast drip during, and continued after spinal anesthesia. Patients were monitored for hemodynamic parameters, time of sensory onset and height of maximum sensory block, lower limb motor blockade was scored using modified Bromage scale and the frequency of side effects.