Gladys Meneses

Cause of Death and Predictors of All‐Cause Mortality in Anticoagulated Patients With Nonvalvular Atrial Fibrillation: Data From ROCKET AF

Sean D. Pokorney, Jonathan Paul Piccini, Susanna R. Stevens, Manesh R. Patel et autres

BACKGROUND: Atrial fibrillation is associated with higher mortality. Identification of causes of death and contemporary risk factors for all-cause mortality may guide interventions. METHODS AND RESULTS: In the Rivaroxaban Once Daily Oral Direct Factor Xa Inhibition Compared with Vitamin K Antagonism for …

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HEMODILUTION DECREASES CRITICAL CLOSING PRESSURE BUT DOES NOT INCREASE THE AORTIC TO DISTAL PRESSURE GRADIENT IN DOGS

Jorge Urzúa, Gladys Meneses, Guillermo Lema, Roberto Canessa et autres

INTRODUCTION Hemodilution is used routinely during cardiac surgery and CPB. Its clinical and hemodynamic effects are well documented [1]; however, its effect on the arterial zero-flow ("critical closing") pressure has not been established. Further, it has been proposed [2] that hemodilution may …

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Renal Protection in Patients Undergoing Cardiopulmonary Bypass with Preoperative Abnormal Renal Function

Guillermo Lema, Jorge Urzúa, Roberto Jalil, Roberto Canessa et autres

UNLABELLED: We prospectively studied the effects of renal protection intervention in 17 patients with preoperative abnormal renal function (plasma creatinine > 1.5 mg/dL) scheduled for elective coronary surgery. Patients were randomized to either dopamine 2.0 micrograms.kg-1.min-1 (Group 1, n = 10) or …

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Renal Protection in Patients Undergoing Cardiopulmonary Bypass with Preoperative Abnormal Renal Function

Guillermo Lema, Jorge Urzúa, Roberto Jalil, Roberto Canessa et autres

We prospectively studied the effects of renal protection intervention in 17 patients with preoperative abnormal renal function (plasma creatinine >1.5 mg/dL) scheduled for elective coronary surgery. Patients were randomized to either dopamine 2.0 micro g [center dot] kg-1 [center dot] min-1 (Group …

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Arterial Pressure-Flow Relationship in Patients Undergoing Cardiopulmonary Bypass

Jorge Urzúa, Gladys Meneses, Christian Fajardo, Guillermo Lema et autres

We determined the arterial pressure-flow relationship experimentally by means of step changes of blood flow in 30 adult patients undergoing cardiopulmonary bypass (CPB). Anesthesia technique was uniform. CPB was nonpulsatile; hypothermia to 25-28 degrees C, and hemodilution to 18%-25% hematocrit were used. …

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Arterial Pressure-Flow Relationship in Patients Undergoing Cardiopulmonary Bypass

Jorge Urzúa, Gladys Meneses, Christian Fajardo, Guillermo Lema et autres

We determined the arterial pressure-flow relationship experimentally by means of step changes of blood flow in 30 adult patients undergoing cardiopulmonary bypass (CPB). Anesthesia technique was uniform. CPB was nonpulsatile; hypothermia to 25-28 degrees C, and hemodilution to 18%-25% hematocrit were used. …

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Comparison of Isoflurane, Halothane and Fentanyl in Patients with Decreased Ejection Fraction Undergoing Coronary Surgery

Jorge Urzúa, Michele Serra, Guillermo Lema, Roberto Canessa et autres

The aim of the study was to compare three anaesthetic agents in patients with ejection fraction below 0.40 subjected to coronary revascularization surgery. Twenty five elective coronary surgical patients with ejection fraction below 0.40 were prospectively studied. Premedication was pethidine 1 mg/kg …

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Effects of Extracorporeal Circulation on Renal Function in Coronary Surgical Patients

Guillermo Lema, Gladys Meneses, JORGE URZUA, Roberto Jalil et autres

Comment Although the authors found a logical result, it is a surprising one. Extracorporeal circulation did not adversely affect renal function. In fact, the functional alterations that occurred preopera-tively and in the prebypass period seem almost to be reversed by the benefits …

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Effects of Extracorporeal Circulation on Renal Function in Coronary Surgical Patients

Guillermo Lema, Gladys Meneses, Jorge Urzúa, Roberto Jalil et autres

We prospectively studied perioperative changes of renal function in 12 previously normal patients (plasma creatinine < 1.5 mg/dL) scheduled for elective coronary surgery. Glomerular filtration rate (GFR) and effective renal plasma flow (ERPF) were measured with inulin and 125I-hippuran clearances before induction …

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Effects of Extracorporeal Circulation on Renal Function in Coronary Surgical Patients

Guillermo Lema, Gladys Meneses, Jorge Urzúa, Roberto Jalil et autres

We prospectively studied perioperative changes of renal function in 12 previously normal patients (plasma creatinine <1.5 mg/dL) scheduled for elective coronary surgery. Glomerular filtration rate (GFR) and effective renal plasma flow (ERPF) were measured with inulin and125 I-hippuran clearances before induction of …

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Thermoregulatory vasoconstriction increases the difference between femoral and radial arterial pressures

Jorge Urzúa, Daniel I. Sessler, Gladys Meneses, Carla M. Sacco et autres

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A simple index for ventriculoarterial coupling

Jorge Urzúa, Guillermo Lema, Marcelo W. Guarini, Aldo Z. Cipriano et autres

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