Pedro Thadeu Galvão Vianna

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CONTEXT AND OBJECTIVE The significant relationship between upper abdominal surgery and early (perioperative) pulmonary events was investigated among patients with preoperative pulmonary conditions undergoing general anesthesia. DESIGN AND SETTING Retrospective study for which data were obtained prospectively from 1999 to 2004, at a tertiary university(More)
Our aim was to compare peri-operative core temperatures and the incidence of hypothermia in obese and non-obese women with active forced-air warming. Twenty female patients scheduled for abdominal surgery were allocated to two groups according to body mass index. Ten obese (30.0-34.9 kg.m(-2) ) and 10 non-obese (18.5-24.9 kg.m(-2) ) women received(More)
PURPOSE To evaluate the effect of N-acetylcysteine, as a renoprotective agent, when administered early after anesthesia induction, against ischemia/reperfusion injury in rats anesthetized with isoflurane. METHODS Eighteen male Wistar rats weighing > 300 g were anesthetized with isoflurane. The internal jugular vein and the left carotid artery were(More)
The smaller volemic state from hypertonic (7.5%) saline (HS) solution administration in hemorrhagic shock can determine lesser systemic oxygen delivery and tissue oxygenation than conventional plasma expanders. In a model of hemorrhagic shock in dogs, we studied the systemic and gastrointestinal oxygenation effects of HS and hyperoncotic (6%) dextran-70 in(More)
OBJECTIVE The aim of this study was to compare cystatin C versus creatinine as a marker for acute kidney injury in patients submitted to cardiac surgery with cardiopulmonary bypass. METHODS Fifty consecutive patients submitted to coronary artery bypass grafting were studied. Renal function was evaluated by serum cystatin C and creatinine. Blood samples(More)
BACKGROUND The purpose of this investigation was to examine the effect of isoflurane, remifentanil, and preconditioning in renal ischemia/reperfusion injury (IRI). METHODS All 52 male Wistar rats were anesthetized with isoflurane, intubated and mechanically ventilated. The animals were randomly divided into: S group (sham; n = 11) that underwent only(More)
BACKGROUND The purpose of this investigation was to examine the effect of caffeic acid phenethyl ester (CAPE) in renal ischemia/reperfusion injury in rats anesthetized with isoflurane (iso). METHODS We randomly assigned 26 male Wistar rats anesthetized with isoflurane, intubated and mechanically ventilated to 3 groups: G1 (controls; n = 8), G2 (CAPE; n =(More)
INTRODUCTION To study the functional and histological alterations in dog kidneys submitted to total ischemia for thirty minutes and the possible metoprolol protective action. MATERIAL AND METHODS Sixteen dogs anesthetized with sodium pentobarbital (SP) were studied and divided into two groups: G1-8 dogs submitted to left nephrectomy and right renal artery(More)
PURPOSE To study the effect of isoflurane (Iso) or propofol (Prop) anesthesia on renal ischemia/reperfusion injury (IRI) during transient hyperglycemia. METHODS Thirty six rats were randomly assigned into six groups of six animals each: PHS (Sham-Prop=1mg.kg-1.min-1 + Hyperglycemia=2.5g.kg-1 of glucose solution administered intraperitoneally); HIS(More)