Active clinical trials for "Pneumoperitoneum"

Trendelenburg position and carbon dioxide (CO2) pneumoperitoneum are in association with increased intracranial pressure (ICP) reflected by the optic nerve sheath diameter (ONSD). Measurement of ONSD by ultrasound (US) guidance can be used in the diagnosis of ICP. The investigators interrogated the effects of lateral 45° downward position and CO2 insufflation on ONSD in patients undergoing laparoscopic transperitoneal nephrectomy.

Because of cellular changes in response to ischemia and a following period of reperfusion, damages to organs and different tissues occur. There are several ongoing studies to enlighten the pathophysiological processes underlying these damages inflicted by ischemia/reperfusion. Gases (CO2) with low water content are used in pneumoperitoneum, which is a procedure to inflate the abdominal cavity with an appropriate gas for laparoscopic operations. In the current literature, it was shown that due to a restricted blood flow during the gas insufflation, ischemia develops and with the reperfusion of the organ in deflation period, oxidative stress and inflammation increases, leading to ischemia/reperfusion-related organ and tissue damages. In the proposed study, biomarkers for ischemia/reperfusion-inflicted damage will be evaluated in a biochemical and histopathological perspective in biopsy samples of ovaries from a young patient group in which hysterectomy and bilateral salpingo-oophorectomy will be performed, laparoscopically.

18 participants (novices, intermediates and experts) performed in total 248 insertions in a systematic way on Thiel embalmed bodies with wide and small bore versions of the conventional VNc (conventional Veress Needle) and the VN+(The Veress Needle plus). Insertion depth was measured by recording the graduations on the needle under direct laparoscopic vision.

Postoperative cognitive decline (POCD) is a common and impactful outcome of surgical procedures in older adults. The pathophysiology and causative mechanisms for POCD are poorly understood. The robot-assisted radical cystectomy (RARC) is increasingly utilized. In patients undergoing RARC, Although prolonged Trendelenburg position and pneumoperitoneum can increase the cerebral blood flow, the excessive cerebral perfusion can lead to encephalemia, which reduce the oxygen uptake of brain tissue and cause insufficient oxygenation of brain tissue at the cellular level. POCD may take place due to cerebral hemodynamic changes. The goal of the current study is to investigate the combined effect of this position and CO2 pneumoperitoneum on POCD during RARC with the monitor of cerebral oxygen.

This study aimed to evaluate the increase of intraabdominal pressure 12- 14 mmHg caused by pneumoperitoneum resulted from carbon dioxide (CO2) insufflation induce glycocalyx endothelial injury that cause kidney tubular injury on live donor patient that undergo laparoscopic nephrectomy surgery, and decreasing the intraabdominal pressure to 8-10 mmHg during surgery is expected to reduce the injury.

Previous studies conducted on the hemodynamic effects of pneumoperitoneum pressures created by different insufflation flows are very limited in the literature. In a current literature review, there was no study found comparing the effects of hemodynamic changes created by low and high insufflation flows and pneumoperitoneum pressure on cerebral oxygenation. The purpose of the study was to contribute to the literature by investigating the effects of pneumoperitoneum pressures created by different flows on brain oxygenation.

The purpose of the study was the comparative assessment of the influence of low and standard pressure CO2 pneumoperitoneum on the systemic inflammatory and angiogenic responses during the postoperative period after laparoscopic management of cholelithiasis.

This RCT aims to investigate the real surgical effects of MBP prior to the gynecological laparoscopic surgeries. Those effects include lowest pneumoperitoneum pressure, lowest Trendelenburg inclination angle, the ease of the surgical view and the preferences of the patients with objective measures.

Pneumoperitoneum created during laparoscopic surgeries has some effects on human physiology. Increased intraabdominal pressure results in increased intrathoracic pressure, and eventually may result in increased intracranial and intraocular pressures. In this study we aimed to identify intraocular and intracranial pressure changes during the perioperative period due to the pneumoperitoneum created for laparoscopic cholecystectomy surgeries. Intraocular pressure will be measured directly from the eye. Intracranial pressure will be estimated by measuring optic nerve sheath diameter changes ultrasonographically.

General anesthesia is associated with loss of pulmonary functional residual capacity and consequent developement of atelectasis and closure of the small airway. Infants and young children are more susceptible to this lung collapse due to their small functional residual capacity. Mechanical ventilation in a lung with reduced functional residual capacity and atelectasis increased the dynamic alveolar stress-strain inducing a local inflammatory response in atelectatic lungs areas know as ventilatory induced-lung injury (VILI). This phenomenon may appear even in healthy patients undergoing general anesthesia and predisposes children to hypoxemic episodes that can persist in the early postoperative period. During laparoscopy, pneumoperitoneum may aggravate the reduction of functional residual capacity as it generates a further increase in intra-abdominal pressure. The increase in alveolar stress-strain cloud be reduced during pneumoperitoneum in theory, if normal functional residual capacity is restored and the transpulmonary pression is reached at the end of expiration of 0-1 cmH2O.