Ramsey M. Dallal

Learn More
OBJECTIVE To review the epidemiology and characteristics of patients who died or underwent colectomy secondary to fulminant Clostridium difficile colitis. SUMMARY BACKGROUND DATA In patients with C. difficile colitis, a progressive, systemic inflammatory state may develop that is unresponsive to medical therapy; it may progress to colectomy or death. (More)
BACKGROUND The mechanism of marginal ulceration after laparoscopic gastric bypass surgery is poorly understood. We reviewed the incidence, presentation, and outcome of ulcer disease in consecutive patients undergoing laparoscopic gastric bypass surgery. METHODS The outcomes of 201 consecutive laparoscopic gastric bypass surgery procedures were(More)
BACKGROUND Acute renal failure (ARF) is a serious complication that contributes to patient morbidity and may result in death. To date, no data are available regarding the predictive risk of ARF or its effect on the outcome of patients who undergo laparoscopic gastric bypass. METHODS The medical records of 1800 patients who underwent gastric bypass from(More)
The routine use of closed suction drains and upper GI (UGI) series has been used to aid in the diagnosis and management of gastrojejunal leak after gastric bypass as well as diagnose intra-abdominal bleeding. 352 consecutive laparoscopic gastric bypass procedures were performed without the use of routine drains or post-operative UGI series. There were no(More)
We investigated the in vitro effects of combining interleukin-18 (IL-18) and IL-2 on human lymphocytes. The combined use of these two cytokines synergistically enhanced the proliferation, cytolytic activity, and interferon-gamma production of peripheral blood mononuclear cells. Phenotypic analysis revealed a preferential expansion of CD56+CD3- cells and an(More)
BACKGROUND Identifying the predictors of co-morbidity improvement after gastric bypass surgery (Roux-en-Y gastric bypass) might give insight into disease pathophysiology. METHODS We performed an observational study of 949 patients undergoing primary RYGB from 2005 to 2010. Multivariate mixed models were used to determine the predictors of change in(More)
BACKGROUND Despite the relatively high incidence of ventral hernias in the morbidly obese, their management in bariatric surgery patients remains difficult and controversial. We sought to define a rational approach to ventral hernia management in the gastric bypass patient in a university hospital setting. METHODS We performed a retrospective,(More)
BACKGROUND There has been limited research examining the mechanisms and epidemiology of sexual dysfunction in the morbidly obese. Our objectives were to measure sexual function in the morbidly obese man before and after substantial weight loss induced by gastric bypass surgery. STUDY DESIGN All male patients in undergoing gastric bypass completed the(More)
BACKGROUND Internal herniation of the bowel may be a late complication after the laparoscopic Roux-en-Y gastric bypass (RYGBP). A seemingly minor change in technique is described that significantly prevents herniation behind the Roux limb mesentery. We hypothesized that internal hernias behind the Roux limb mesentery occur more frequently when the Roux limb(More)
BACKGROUND Roux-en-Y gastric bypass (RYGB) is one of the best-known and most commonly performed bariatric procedures. However, this procedure carries infrequent but serious long-term complications, which may require revisional procedures. This study reports the indications and outcomes of gastric bypass reversal that have not been described well in the(More)