View clinical trials related to Valve Surgery.
Filter by:This is a multi-center, open label, single group, observational study designed to evaluate the effects of a Cardioplexol™ preparation and administration training program proposed to cardiac surgeons and cardiotechnicians inexperienced in the use of Cardioplexol™. The training program aims at increasing the efficacy of Cardioplexol administration while reducing the risk of false manipulations. During the training possible risks and consequences of incorrect applications as well as the measures to take in case of administration error, are discussed. The training program includes one standardized theoretical part and one practical part consisting of a direct intra-operative coaching of surgeons practicing their first 2 operations. The effect of the training will then be assessed by evaluating each trained surgeon's 4 next consecutive patients operated with Cardioplexol and without the coach.
The investigators are conducting a pilot study to compare cognitive outcomes among Veterans with severe aortic valve stenosis who are scheduled to undergo either aortic valve replacement.
Hypothesis: Deep breathing exercises performed during the first two months after cardiac surgery, will improve pulmonary function and patient-perceived quality of recovery. Specific aim: To evaluate the effectiveness of breathing exercises performed with a mechanical device for positive expiratory pressure during the first two months after cardiac surgery compared to a control group performing no breathing exercises. Design: A prospective, randomized, controlled two-center study.
This study investigates the effect of two dose-levels of AP214 on the prevention of (acute) kidney injury after cardiac surgery.
The prophylactic use of small doses of ephedrine may be effective in obtunding of the hypotension responses to propofol with minimal hemodynamic and ST segment changes. The investigators aimed to evaluate the effects of small doses of ephedrine on hemodynamic responses of propofol anesthesia for valve surgery. There is widespread interest in the use of propofol for the induction and maintenance of anesthesia for fast track cardiac surgery. However, its use for induction of anesthesia is often associated with a significant rate related transient hypotension for 5-10 minutes. This is mainly mediated with decrease in sympathetic activity with minor contribution of its direct vascular smooth muscle relaxation and direct negative inotropic effects. Ephedrine has demonstrated as a vasopressor drug for the treatment of hypotension in association with spinal and general anesthesia. Prophylactic use of high doses of ephedrine [10-30 mg] was effective in obtunding the hypotensive response to propofol with associated marked tachycardia. However, the use of smaller doses (0.1-0.2 mg/kg) was successfully attenuated, but not abolished, the decrease in blood pressure with transient increase in heart rate. This vasopressor effect is mostly mediated by β-stimulation rather than α-stimulation and also indirectly by releasing endogenous norepinephrine from sympathetic nerves. Because the effect of decreasing the dose of ephedrine from 0.1 to 0.07 mg/kg may be clinically insignificant, the investigators postulated that the prophylactic use of small dose of ephedrine may prevent propofol-induced hypotension after induction of anesthesia for valve surgery with minimal in hemodynamic, ST segment, and troponin I changes. The aim of the present study was to investigate the effects of pre-induction administration of 0.07, 0.1, 0.15 mg/kg of ephedrine on heart rate (HR), mean arterial blood pressure (MAP), central venous and pulmonary artery occlusion pressures (CVP and PAOP, respectively), cardiac (CI), stroke volume (SVI), systemic and pulmonary vascular resistance (SVRI and PVRI, respectively), left and right ventricular stroke work (LVSWI and RVSWI, respectively) indices, ST segment, and cardiac troponin I (cTnI) changes in the patients anesthetized with propofol-fentanyl for valve surgery.
The purpose of the present research study is to investigate the pharmacokinetics, as well as safety, tolerability and pharmacodynamics of different ascending dosing regimens of AP214 in patients undergoing cardiac surgery. AP214, the investigational drug, is being developed to potentially prevent post-surgical kidney injury after thoracic aortic aneurysm repair.
The use of Tetraspan® as prime solution can reduce fluid extravasation after perfusion versus Ringer acetate. Plasma-adapted HES-solutions produce also less acidosis.
The purpose of the present research study is to investigate for the first time, the safety and tolerability of infusion doses of AP214 in subjects having heart surgery such as coronary bypass graft and/or valve repair or replacement surgery. AP214, the investigational drug, is being developed to potentially prevent post-surgical kidney injury after thoracic aortic aneurysm repair.