Christopher R H Newton

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Calcium channel and beta-adrenergic receptor antagonists are common pharmaceutical agents with multiple overlapping clinical indications. When used appropriately, these agents are safe and efficacious. In overdose, however, these agents have the potential for serious morbidity. Calcium channel blockers and beta blockers share similar physiological effects(More)
BACKGROUND In addition to its vasoconstricting effects, angiotensin II (Ang II) has also demonstrated the ability to modulate microvessel permeability. We hypothesized that activation of the angiotensin II type 1 receptor (AT1) would increase hydraulic permeability. METHODS Hydraulic permeability (L(p)) was measured in rat mesenteric venules using the(More)
Duplicate gallbladder is a rare congenital anomaly resulting from abnormalities in embryogenesis during the fifth and sixth weeks of gestation. Approximately 210 cases have been described. Variations include duplicate, triplicate, and septated gallbladder. We encountered a 15-year-old girl with both a duplicated gallbladder and a duplicated cystic duct who(More)
Background: Granulomatous gastritis is a rarely observed pathological diagnosis. This condition often mimics gastric adenocarcinoma clinically, resulting in gastric resection. However, granulomatous gastritis has long been viewed as a benign process not observed in association with adenocarcinoma of the stomach. This article describes a patient with(More)
PURPOSE To examine the trends in laparoscopic appendectomy (LA) utilization and outcomes for children 5 years or younger. METHODS We studied 16,028 inpatient admissions for children 5 years of age or less undergoing an appendectomy for acute appendicitis in 2000, 2003, and 2006 using the Kids' Inpatient Database (KID). Laparoscopy frequency, hospital(More)
BACKGROUND Recent data have demonstrated that intensive glycemic control during critical illness improves outcome. The purpose of our study was to evaluate the effect of a computerized hospital insulin protocol (CHIP) on glycemic control and outcome in critically ill trauma patients. METHODS Two, 6-month cohorts were compared, one 6 months prior to chip(More)
INTRODUCTION The effect of hypertonic saline (HTS) on microvascular permeability in microvessels with activated endothelial cells is unclear. We hypothesized that HTS and HTS with dextran would decrease hydraulic permeability after activation of the endothelium. METHODS Hydraulic permeability (L(p)) was measured in rat mesenteric venules using the(More)
BACKGROUND Angiotensin II (Ang II) is a potent vasoconstrictor that is released during shock and sepsis. It is known to have activity on vascular endothelial cells. We hypothesized that Ang II plays a role in the modulation of fluid flux across the microvascular endothelium. MATERIALS AND METHODS Hydraulic permeability (L(p)) is a measure of water flow(More)
BACKGROUND Platelet-activating factor (PAF) is a modulator of the inflammatory response to shock. Edema formation and intravascular fluid loss have been associated with PAF. The increase in microvessel permeability caused by PAF may be related to direct endothelial cell activation and leukocyte activation. We hypothesized that PAF increases hydraulic(More)
BACKGROUND We sought to examine the impact of race on the management and outcomes of appendicitis in children aged 20 years or younger. METHODS We studied 96,865 inpatient admissions for children undergoing an appendectomy for acute appendicitis in 2009 using the Kids' Inpatient Database. RESULTS Perforation at presentation was more common among(More)