PURPOSE We hypothesized that regional cerebral oxygen saturation (rSO2) could replace jugular bulb oxygen saturation (SjvO2) in the steep Trendelenburg position under pneumoperitoneum. Therefore, we evaluated the relationship between SjvO2 and rSO2 during laparoscopic surgery. MATERIALS AND METHODS After induction of anesthesia, mechanical ventilation was controlled to increase PaCO2 from 35 ...

BACKGROUND Conventional pelviscopic surgery requires pneumoperitoneum with CO(2) gas insufflation and lithotomy-Trendelenburg position. Pneumoperitoneum and Trendelenburg position may influence intraoperative respiratory mechanics in anesthetic management. This study was conducted to investigate the influence of pneumoperitoneum and Trendelenburg position on respiratory compliance and ventilati...

PURPOSE The effect of position on the spread and the onset time of epidural anesthesia has not been well documented. This study was undertaken to assess the effect of modified Trendelenburg position on the spread of epidural anesthesia for Cesarean section. METHODS Seven hundred thirty-nine parturients underwent epidural anesthesia for elective or emergent Cesarean section. Patients were divi...

Background: The Trendelenburg position is a common technique used during internal jugular vein (IJV) cannulation in pediatric patients. There has been some speculation as to the correlation between Trendelenburg positioning and increases in the cross-sectional area (CSA) of the IJV in obese child patients. In the present study, we use ultrasound (US) measurements to assess and determine the pre...

BACKGROUND Positive end-expiratory pressure (PEEP) can increase intracranial pressure. Pneumoperitoneum and the Trendelenburg position are associated with an increased intracranial pressure. We investigated whether PEEP ventilation could additionally influence the sonographic optic nerve sheath diameter as a surrogate for intracranial pressure during pneumoperitoneum combined with the Trendelen...

BACKGROUND More laparoscopic low anterior resections (LAR) are being performed in recent years. There has been controversy around the hemodynamic changes affected by the Trendelenburg position and pneumoperitoneum during LAR. The goal of this study was to analyze the effect of nitroglycerin (NTG) on hemodynamic changes during LAR. METHODS Forty ASA physical status I-II patients undergoing LAR...

BACKGROUND In spite of several efforts for decreasing blood loss, our experience sometimes shows that some patients bleed more profusely during rhinoplasty. Patient position could have deep impact on bleeding amount during surgical procedures. OBJECTIVE In this study, we aimed to compare reverse trendelenburg position and head-up position on intra-operative bleeding of elective rhinoplasty. T...

In the mid-19th century, Friedrich Trendelenburg— pioneering German surgeon (1844-1924)— popularized the technique known in the Middle Ages as the “head-down position.” In his surgical text of 1873, Trendelenburg recognized that raising a patient’s hips caused the bulk of abdominal viscera to slide toward the diaphragm, providing a less cluttered operative field for lower abdominal and pelvic p...