Active clinical trials for "Hypotension"

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.

Hypotension after spinal anesthesia for Cesarean section occurs in up to 90% usually under five minutes after local anesthetics administration. These changes are poorly depicted by oscillometric measurements. The investigators hypothesized, that a continuous noninvasive device detects more hypotensive periods with lower blood pressures.

Comparison of short and long term neurological outcome of VLBW infants with and without early onset hypotension required intervention. The cohort includes all VLBW infants born in our institution between January 1997 and December 2000.

This was a prospective observational study between January 2022 and June 2022. The investigators included parturients aged 18 to 45 years, consenting, classified ASA II and III, scheduled for elective or emergency cesarean section (Lucas III-IV). Baseline hemodynamic parameters were measured in 3 different positions: sitting, supine, and left lateral tilt 15°. The investigators defined Δ1 as the change from the sitting position to the supine position ad Δ2 as the change from the left lateral tilt 15° position to the supine position. Our primary endpoint was the incidence of hypotension defined as a decrease of more than 20% from baseline values. The investigators performed univariate and then multivariate analysis.

Hypotension is very common during and after anesthesia induction. A prolonged fasting period, a patient's underlying comorbidities, a sympathetic blockade by anesthetic agents, vasodilation, a reduction in preload, and cardiac contractility can cause post-induction hypotension.1,2 The relationship of even short-term hypotension with myocardial damage, renal injury, and stroke has been shown in many studies; therefore, it is very important to provide stable anesthesia induction.3 In current anesthesia practice, we can only intervene when hypotension occurs. If we can identify patients who may experience hypotension during anesthesia induction before it occurs, we can prevent possible postoperative organ dysfunctions by reducing the duration and depth of hypotension with prophylactic fluid and vasopressor administration. We hypothesized that arterial elastance (Ea) values before anesthesia induction could predict post-induction hypotension. To test our hypothesis, we aimed to investigate the reliability of the Ea value, which was monitored preoperatively using the pressure analytical recording method (PRAM) to predict the risk of hypotension that may occur after anesthesia induction.

Hypotension after induction of general anesthesia is a frequent event in routine practice. Even a short period of hypotension may lead to tissue hypoperfusion and predispose to postoperative complications. Intra-operative hypotension is associated with renal injury, ischemic stroke, myocardial injury and postoperative mortality in patients having non-cardiac surgery under general anesthesia. Underlying hypovolemia is an important and modifiable risk factor for hypotension after anesthetics administration. Ultrasonographic studies of the inferior vena cava (IVC) and the internal jugular vein (IJV) for evaluation of intravascular volume status and prediction of hypotension during induction of general anesthesia have been established. The present study was designed to compare, on ultrasound-based measures, between inferior vena cava and internal jugular vein for prediction of prolonged hypotension during induction of general anesthesia. The study was conducted at Kasr Al-Ainy hospital, Cairo University in Patients undergoing elective non-cardiac surgery under general anesthesia.

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.

Hypotension is a recognized frequent complication of induction of anesthesia. The intent of this research is to determine the incidence of hypotension in patients receiving anesthetic induction with propofol. This investigation seeks to examine how normal clinical practice or a "real world" understanding of the usual response to propofol affects hemodynamics without isolating or standardizing other variables. The current research concerns hypotension in normal clinical practice where variability exists. This project aims to gather information and data in an attempt to form a foundation upon which each of the other variables affecting blood pressure may be subsequently assessed.

This study evaluates the influences of the status of sympathovagal balance before tourniquet deflation on a decrease in arterial blood pressure following the deflation during total knee replacement arthroplasty

Evaluation the ability of each indicator of Cardio Q in predicting hypotension after position changes in robot-assisted laparoscopic radical prostatectomy