View clinical trials related to Hemodynamics Instability.
Filter by:Perioperative prone position may be associated with hemodynamic instability. The causes of instability have not yet been precisely elucidated. The aim of this study is to demonstrate physiological changes during prone positioning in healthy volunteers .
The study objective is to examine if a high propofol dose is non-inferior to a low dose in respect to hemodynamic stability in healthy patients during induction of general anesthesia with propofol and remifentanil.
Enteral nutrition in critically ill patients undergoing vasoactive support due to hemodynamic instability is controversial. Hypothesis: enteral nutrition delivered in such patients can be feasible and safe.
Background: Intraoperative fluid therapy guided by mechanical ventilation-induced pulse-pressure variation (PPV) may improve outcomes after major surgery. It was tested this hypothesis in a multi-center study. Methods: The patients were included in two periods: a first control period (control group; n=147) in which intraoperative fluids were given according to clinical judgment. After a training period, intraoperative fluid management was titrated to maintain PPV< 10% in 109 surgical patients (PPV group). It was performed 1:1 propensity score matching to ensure the groups were comparable with regard to age, weight, duration of surgery, and type of operation. The primary endpoint was postoperative hospital length of stay.
Positioning a patient in prone position under anaesthesia significantly alters cardiovascular physiology. Cervical myelopathy patients are known to have autonomic dysfunction. Such patients when positioned in prone position under anaesthesia carry a higher risk of developing hemodynamic changes and this can compromise spinal cord perfusion. This prospective observational study was conducted on 30 patients with cervical myelopathy who underwent surgery in prone position at NIMHANS, Bangalore hospital. The non invasive cardiac output monitor (NICOM, Cheetah Medicals) was used to record various hemodynamic parameters. The hemodynamic parameters were recorded at baseline, post induction, post intubation, prior to prone position, post prone position, and every five minutes thereafter upto 20mins. The hemodynamic parameters that were recorded using the NICOM monitor: - HR - Heart rate (beats /min) - NIBP - non invasive blood pressure (mmHg) - MAP - mean arterial pressure(mmHg) - CO - cardiac output (l/min) - CI - cardiac index (l/min/m2) - SV - Stroke volume (ml/beat) - SVV -stroke volume variability (%) - TPR - total peripheral resistance (dynes. sec/cm5)