View clinical trials related to Hypotension.
Filter by:The purpose of this study is to evaluate the application of the impedance threshold device during hemodialysis in children to optimize fluid removal, reduce the incidence of complications (such as cramps,vomiting and hypotension), and device tolerance.
Pregnant patients having a cesarean section (CS) under spinal anesthesia experience a variety of hemodynamic changes, such as hypotension due to decreases in cardiac output (CO), stroke volume (SV) and/or systemic vascular resistance (SVR). Measurement of these hemodynamic parameters classically requires insertion of a pulmonary artery catheter (PAC) into the heart. However, this invasive method carries significant complications and its use is now reserved for the more critically ill patients. We hypothesize that the Physioflow Impedance device can be used as a reliable non-invasive monitor to measure hemodynamic parameters during elective CS under spinal anesthesia.
The purpose of this clinical study is to evaluate the clinical effect of midodrine hydrochloride (ProAmatine®) compared to placebo in patients with orthostatic hypotension by measuring the time to onset of near syncopal symptoms and assessing several cardiovascular measurements, such as heart rate, blood pressure, and ECG, using the tilt table test.
The purpose of this study is to assess the influence of different fluid infusions on the quantity of bladder retention after spinal anesthesia. This study should determine if this increase in bladder retention is significant and relevant.
This pilot study is being pursued to observe whether certain medications are given to patients within a timeframe where their being given could play a part in a critical event in the management of the patient. There are general rules about when it would be appropriate for these types of medications not to be given. However, it is not current standard practice for the criteria to be put in place without the expressed wishes of the ordering physician or their agent. Research Question: Can the administration of cardio-depressant medications be documented as a significant risk factor for hypotensive or bradycardic events?
This is a multi-center, double-blind, randomized, placebo-controlled, 2-session crossover study to evaluate the incidence of orthostatic hypotension in elderly hypertensive subjects following co-administration of carvedilol CR and lisinopril.
The purpose of this study is to evaluate the safety and possible effectiveness of Hemospan solution in patients undergoing elective orthopedic surgery who receive spinal anesthesia.
The aim of the study is to evaluate whether orthostatic hypotension is associated with nondipping hypertension. Methods and patients: 400 subjects who are referred for 24hABPM will be filled questioner regarding their medical background and medications. All patients will be subjected to orthostatic test before connection to the 24 ABPM. The orthostatic changes in blood pressure and heart rate will be correlated to the changes in blood pressure and heart rate from day to night as recorded by the 24H ABPM.
The purpose of this study is to evaluate the safety, pharmacokinetic and the pharmacodynamic effects of escalating doses of MTR105 while weaning from bypass in a hypotensive population of cardiac surgery patients.
Hypotension remains a common clinical problem after induction of spinal anesthesia for cesarean delivery. Maternal hypotension has been associated with considerable morbidity (maternal nausea and vomiting and fetal/neonatal acidemia). Traditionally, ephedrine has been the vasopressor of choice because of concerns about phenylephrine's potential adverse effect on uterine blood flow. This practice was based on animal studies which showed that ephedrine maintained cardiac output and uterine blood flow, while direct acting vasoconstrictors, e.g., phenylephrine, decreased uteroplacental perfusion. However, several recent studies have demonstrated that phenylephrine has similar efficacy to ephedrine for preventing and treating hypotension and may be associated with a lower incidence of fetal acidosis. All of these studies have been performed in healthy patients undergoing elective cesarean delivery. Preeclampsia complicates 5-6% of all pregnancies and is a significant contributor to maternal and fetal morbidity and mortality. Many preeclamptic patients require cesarean delivery of the infant. These patients often have uteroplacental insufficiency. Given the potential for significant hypotension after spinal anesthesia and its effect on an already compromised fetus, prevention of (relative) hypotension in preeclamptic patients is important. Spinal anesthesia in preeclamptic patients has been shown to have no adverse neonatal outcomes as compared to epidural anesthesia when hypotension is treated adequately. Due to problems related to management of the difficult airway and coagulopathy, both of which are more common in preeclamptic women, spinal anesthesia may be the preferred regional anesthesia technique. Recent studies have demonstrated that preeclamptic patients may experience less hypotension after spinal anesthesia than their healthy counterparts. To our knowledge, phenylephrine for the treatment of spinal anesthesia-induced hypotension has not been studied in women with preeclampsia. The aim of our study is to compare intravenous infusion regimens of phenylephrine versus ephedrine for the treatment of spinal anesthesia induced hypotension in preeclamptic patients undergoing cesarean delivery. The primary outcome variable is umbilical artery pH.