View clinical trials related to Hemodynamic Instability.
Filter by:Most of the major spinal surgeries are performed in the supine position, which causes a decrease in stroke volume and cardiac index, which leads to the occurrence of hypotension during surgery. Postoperative hypotension causes an imbalance in the supply and demand of oxygen, leading to postoperative myocardial infarction or acute renal damage, and may increase mortality one year after surgery. Propofol, which is most commonly used for total intravenous anesthesia, can further increase the incidence of hypotension during surgery. Therefore, there is a continuing demand for an anesthetic agent that is more hemodynamically stable. Remimazolam, an ultra-short acting benzodiazepine that has a similar structure to midazolam, but whose activity is terminated by esterase hydrolysis, is expected to have less hemodynamic effects than propofol. Therefore, the purpose of this study is to investigate the effect of general anesthesia using remimazolam and general anesthesia using propofol on hemodynamic safety during surgery in patients undergoing major spinal surgery in the supine position.
The goal of this randomized controlled trial is to compare manual general anesthesia induction to general anesthesia induction guided by target controlled infusion system in cerebral ischemic stroke The main questions it aims to answer are: - Does target controlled infusion has a more favorauble hemodynamic profile than manual general anesthesia induction? - Do patients receiving general anesthesia with target controlled infusion system have a more favourable outcome? Participants will receive general anesthesia induction with a target controlled infusion system and will be compared to patients receiving manual general anesthesia induction.
Intraoperative fluid management is key component of care for patients undergoing surgery. Hypovolemia and hypervolemia both associate with increased morbidity, length of stay in the intensive care unit and mortality. Thus, maintaining adequate intravascular volume yet avoiding fluid overload is crucial to achieve optimal outcomes. Goal-directed fluid therapy based on arterial pressure waveform analysis is widely used for intraoperative fluid management and have been shown to improve surgical outcomes compared with conventional clinical assessment in several studies. However, dynamic indices of arterial pressure waveform analysis such as pulse pressure variation (PPV) and stroke volume variation (SVV) are altered by certain situations including elevated intra-abdominal pressure and Trendelenburg position. Intravascular fluid status might thus be misinterpreted. Carbon dioxide pneumoperitoneum with increased intra-abdominal pressure and Trendelenburg position are commonly seen in laparoscopic surgeries including colorectal, gynecological, and genitourinary procedures. Understanding how dynamic indices change in these clinical situations are essential for achieving appropriate intraoperative fluid management. This study focus on identifying the effects of different levels of intra-abdominal pressure and angles of Trendelenburg position on dynamic indices of arterial pressure waveform.
Positioning intensive care patients in Trendelenburg position to identify fluid responsiveness assessed by PiCCO device.
This trial investigates the ability of our istitutional algorithm in maintaining a safe hemodynamics during abdominal aorta open surgery, in terms of limitation of intraoperative hypotension incidence
The aim of this study is to assess whether changes in the plethysmography variability index, during a tidal volume challenge, can reliably detect simultaneous changes in arterial blood pressure pulsatility, in patients hospitalized in intensive care unit. If results will be positive, this will allow the test to be performed even in the absence of an invasive arterial catheter.
This randomized controlled study evaluates the effect of acupressure application on the anxiety level patients undergoing cystectomy surgery. The hypothesis of this study is that acupressure reduces anxiety levels and stabilizes hemodynamic parameters.
In the PATHFINDER 2 trial, the study investigators will test the intraoperative EEG-guided multimodal general anesthesia (MMGA) management strategy in combination with a postoperative protocolized analgesic approach to: 1. reduce the incidence of perioperative neurocognitive dysfunction in cardiac surgical patients 2. ensure hemodynamic stability and decrease use of vasopressors in the operating rooms 3. reduce pain and opioid consumption postoperatively
Blood pressure optimization has been considered as a crucial factor to avoid perioperative vital organ hypoperfusion, and perioperative hypotension has been addressed as a risk factor for complications and adverse clinical outcomes. Hypotension prediction index (HPI) is an novel machine-learning derived parameters, and was developed to predict the risk of future hypotension.Series of clinical studies have verified its clinical efficacy in avoiding perioperative hypotension. Major orthopedic surgeries, such as spine surgery, joint surgery, long bone fracture surgery, are quite common in elder people, who are vulnerable to perioperative adverse outcomes.Thus the investigator design this study to testify the clinical efficacy of implementing HPI in perioperative goal-directed hemodynamic therapy in elder patients receiving major orthopedic surgery.
Postspinal hypotension is a frequent maternal complication in caesarian delivery under neuraxial anesthesia which is most commonly treated with the administration of phenylephrine infusion. In this trial, postspinal hypotension will be treated with norepinephrine. The main objective is to examine the pharmacodynamic and biochemical effect of norepinephrine both on mother and newborn.