Effect of preoperative oral erythromycin, erythromycin-ranitidine, and ranitidine-metoclopramide on gastric fluid pH and volume.

Study Objective: To determine whether combining erythromycin with ranitidine is more efficacious than erythromycin or established ranitidine-metoclopramide combination in reducing the volume and acidity of gastric aspirate.

Design: Randomized, double-blind study.

Setting: Operating room complex.

Effect of prophylactic ondansetron on postoperative nausea and vomiting in patients on preoperative steroids undergoing craniotomy for supratentorial tumors.

The exact incidence of postoperative nausea and vomiting (PONV) in patients on steroids undergoing neurosurgical procedures is not known. This prospective randomized double-blind study was planned to know the efficacy of prophylactic ondansetron in the prevention of PONV in patients on steroids as compared with placebo. Seventy adult patients of either sex who had received preoperative steroids (dexamethasone) for at least 24 hours and were scheduled to undergo craniotomy for supratentorial tumors were included.

Unilateral postoperative visual loss due to central retinal artery occlusion following cervical spine surgery in prone position.

Postoperative visual loss following spinal surgery is a rare complication. Although a number of intraoperative and postoperative factors have been implicated exact etiology still may remain unclear. We report a case of unilateral postoperative visual loss in a patient who had undergone prolonged spine surgery in a prone position.

Evaluation of PR, RR, QT intervals and QT dispersion following stellate ganglion block in chronic shoulder-hand pain patients.

Right stellate ganglion block (SGB) can increase QT interval, rate-corrected QT interval (QTc), QT dispersion (QTD), rate-corrected QTD (QTcD), and RR interval while left SGB can decrease these intervals in healthy volunteers. No such studies have been conducted in patients with chronic pain, hence this study was designed to investigate the effects of left and right SGB on these variables in chronic shoulder-hand pain patients. In this study, 28 patients with chronic shoulder-hand pain of at least 6 months duration were given right or left SGB depending on the shoulder affected.

Incidence and types of arrhythmias after mediastinal manipulation during transhiatal esophagectomy.

Background: Transhiatal esophagectomy (THE) is a common operative procedure for carcinoma esophagus. Complications of this procedure include arrhythmias and hypotension during blunt dissection of the esophagus from posterior mediastinum. In the literature, exact incidence and type of arrhythmias have not been reported.