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NCT06914401
Obesity is a risk factor for difficult intubation, with an incidence of up to 15.5%, and difficult mask ventilation. Obesity also reduces the functional residual capacity (FRC) of the lungs, the main reservoir of oxygen during apnoea. Complications associated with induction and intubation in the operating room are more frequent in obese patients. Preoxygenation is a cornerstone in the management of patients at risk of desaturation during induction. The study aims to compare two oxygenation strategies , in obese patients. Oxygenation using a combination of NIV (Non Invasive Ventilation) and HFNO (High Flow Nasal Oxygen) compared with NIV alone in the operating room for induction of general anaesthesia with orotracheal intubation.
NCT06666686
This study aims to determine the effects of active and passive noise control method and headphone usage and noise level during anesthesia induction in laparoscopic cholecystectomy surgery on hemodynamic parameters, pain, nausea and vomiting, and recovery time from anesthesia in patients after surgery.
NCT06639737
Immediately following the induction of general anesthesia, arterial hypotension may occur with an incidence of about 40% in patients classified as ASA 3 or 4. Perioperative arterial hypotension is associated with increased perioperative morbidity and mortality. The increased mortality associated with perioperative arterial hypotension has been reported up to 30 and 90 days after surgery. This association appears to be both dose-dependent and time-dependent (severity and duration of arterial hypotension). EchOptimal study aims to determine whether non invasive preoperative stroke volume optimization using transthoracic echocardiography (TTE) can reduce the incidence and severity arterial hypotension following induction of general anesthesia. This is prospective, randomized, controlled, double blinded study approved by ethics comittee. The primary objective of this study is to compare the incidence of arterial hypotension (mean arterial pressure \< 65 mmHg) within the first 15 minutes following the induction of general anesthesia, between 2 groups : * standard current care (stroke volume optimized after induction of general anesthesia using oesophageal doppler) and * preopertaive stroke volume optimization using transthoracic echocardiography measument of subaortic velocity time integral.
NCT02920879
This study investigates airway effects of PEEP during maskventilation at anesthesia induction. Four patient groups will be ventilated with different PEEP and driving pressures to evaluate time to open airway after start of positive pressure maskventilation during anesthesia induction.