Temporary Vision Loss After Spinal Anesthesia

Perioperative visual loss is a rare complication mostly associated with cardiac, spine, and head and neck surgery that could severely affect quality of life. We report a case of temporary visual loss without any other subjective symptom after spinal anesthesia

Effect of PEEP, Zero PEEP and Intraabdominal Pressure Levels on Cerebral Oxygenation in the Morbidly Obese Undergoing Sleeve Gastrectomy

Salihoglu, Ziya/0000-0002-6905-2664; Yorulmaz, Ilknur Suidiye/0000-0002-1441-6360WOS: 000411388600006The study is designed to determine the effect of zero end expiratory pressure (ZEEP) and 5mmHg positive end expiratory pressure (5PEEP) on cerebral oxymeter (CO) levels in morbidly obese (MO) patients. Study was performed on 60 morbidly obese patients between 18-60 years old, American Society of Anesthesiology 2-3 status, scheduled to undergo laparoscopic sleeve gastrectomy under general anesthesia. The patients were divided into two groups: those ventilated with no PEEP (group ZEEP, n = 30) and those ventilated with 5 cmH(2)O PEEP levels (group 5PEEP, n = 28). rSO(2) values were measured. Data were recorded as basal, after the induction (A ind) of anesthesia, 5 min before insufflation (BI), 5 min after insufflation (AI), 15, 30, 45, and 60 min after induction, 5 min before desufflation, and 5 min after desufflation (AD). Invasive arterial pressures, CO values, peripheral oxygen saturation, end tidal carbondioxide, and intraabdominal pressure (IAP) were recorded in these time periods in all groups. Arterial blood samples were analyzed in terms of the 5BI, 5AI, and 5AD periods. There was a negative correlation between IAP and left CO on pneumoperitoneum time in group 5PEEP. Correlation was observed between bilateral CO values and ideal body weight (IBW), lean body weight (LBW), body surface area BSA, in group ZEEP. Correlation was observed between IBW, LBW, and right CO values in group 5PEEP. PEEP application may have a protective effect on cerebral oxygenation

Effect of Nitrous Oxide Anaesthesia on Endotracheal Cuff Pressure

Aim: When N2Ois used for general anaesthesia, it diffuses into the air-filled endotracheal cuff causing the cuff pressure to rise by over inflating the cuff, which results in tracheal damage. This study aimed to estimate changes in the endotracheal-cuff pressure with time during oxygen-air- and oxygen-N2O -induced anaesthesia and to determine its sore throat and hoarseness incidence. Methods: Fifty patients with American Society of Anesthesiologists physical status 1-2, aged 18-60 years were icluded to our study. Orotracheal intubation was performed using polyvinyl chloride high volume-low pressure endotracheal tubes. The AIR group 40% O2/60% air and N2O group 40% O2/60% N2O was used. The endotracheal cuff pressure at 5, 10, 15, 20 minutes immediately after intubation and at 10-minute intervals were recorded. When the cuff pressure reached 45 cm H2O, was attenuated to 25-30-cm H2O. At the post operative first and the 24th hour, the patients were queried for sore throat and hoarseness. Results: The N2O -group cuff pressure rose from the fifth minute onwards. Also, the N2O group had a higher incidence of sore throat and hoarseness. Conclusion: N2O results in elevated cuff pressure and tracheal morbidities. Cuff-pressure should be routinely monitored during anaesthesia using N2O