Effect of beach chair position on bispectral index values during arthroscopic shoulder surgery.

Background: Bispectral index (BIS) monitoring reduces the cases of intraoperative awareness. Several factors can alter BIS readings without affecting the depth of anesthesia. We conducted a study to assess the impact of beach chair position (sitting position) on BIS readings.

Comparison of two topographical airway length measurements in adults.

Background: A correct estimate of the tracheal tube insertion depth can prevent complications, including endobronchial intubation and vocal cord trauma. We evaluated a new topographical method for endotracheal tube positioning relative to the carina, using a well-known prior topographical method for comparison.

Methods: One hundred adult (male 50, female 50) patients were studied.

Effects of the tourniquet deflation on bispectral index during knee arthroscopic surgery under the general anesthesia.

Background: Tourniquet deflation during lower extremity surgery affects the hemodynamics and metabolism of the patient, which can affect brain activity. This study examined the changes in brain activity during tourniquet deflation by measuring the bispectral index (BIS).

Methods: The BIS was measured during surgery in forty patients who had received knee arthroscopic surgery under general anaesthesia.

Effects of esomeprazole premedication on gastric pH during laparoscopic surgery.

Background: The use of CO2 for pneumoperitoneum during laparoscopic surgery provokes a decrement in the gastric pH. Since the incidence rate of PONV increases after laparoscopic surgery, the possibility of lung aspiration of gastric juice with a low pH during a postanesthetic emergence may increase and this could be fatal for the patient. We conducted this study to determine the effects of esomeprazole premedication on inhibiting the decrement of the gastric pH during laparoscopic surgery.