Maria Ângela Tardelli

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BACKGROUND The use of ultrasound (US) in regional anaesthesia enables a reduction in the local anaesthetic volume. The present study aimed to determine the minimum effective volume (MEV(90)) of 0.5% bupivacaine with epinephrine for interscalene brachial plexus block (ISBPB). METHODS The volume of the anaesthetic was determined using a step-up/step-down(More)
INTRODUCTION The use of ultrasound in regional anesthesia allows reducing the dose of local anesthetic used for peripheral nerve block. The present study was performed to determine the minimum effective concentration (MEC90) of bupivacaine for axillary brachial plexus block (ABPB). METHODS Patients undergoing hand surgery were recruited. To estimate the(More)
OBJECTIVE Early tracheal extubation following surgical procedures favors clinical evolution of patients and reduces incidence and time of stay in the Intensive Care Unit (ICU), minimizing hospital costs. Immediate postoperative period of pulmonary resections often takes place in the ICU and patients are kept intubated. This study evaluated hospital records(More)
OBJECTIVES Recently, evidence of reduction in mortality due to the use of volatile agents during cardiac surgery led to an increase in their use during cardiopulmonary bypass (CPB). Because this technique could be beneficial to patients, but might present several hazards to new users, the authors decided to perform a systematic review of the main problems(More)
OBJECTIVES Volatile anesthetics have cardioprotective properties that improve clinically relevant outcomes in cardiac surgery, and can be used during cardiopulmonary bypass (CPB) through adapted calibrated vaporizers together with air and oxygen (O2). The effect of volatile agents on the membrane oxygenator is unknown. The aim of this study was to evaluate,(More)
BACKGROUND AND OBJECTIVES The use of volatile anesthetics in cardiac surgery is not recent. Since the introduction of halothane in clinical practice, several cardiac surgery centers started to use these anesthetics constantly. CONTENT In the last years a great number of studies have shown that the volatile anesthetics have a protecting effect against(More)
BACKGROUND AND OBJECTIVES Dexmedetomidine is a highly selective alpha2-adrenoceptor agonist used in anesthesia for its hypnoanalgesic and cardiovascular effects. Stimulation of alpha2-adrenoceptors may determine pro and anti-platelet aggregation effects through direct and indirect mechanisms. This study aimed at determining the effects of dexmedetomidine on(More)
BACKGROUND AND OBJECTIVES The use of the ultrasound to guide the puncture in peripheral nerve blocks has become increasingly more frequent. With the lower probability of promoting vascular damage the ultrasound has become an interesting tool in peripheral nerve blocks especially in patients in use of anticoagulants or with coagulopathies. The objective of(More)
Justificativa e Objetivos A utilização de múltiplos de CAM, não comparáveis, do sevoflurano e do halotano, além da diferente contribuição do N2O na CAM destes dois agentes, em pacientes pediátricos, são os fatores citados para explicar igual velocidade de indução e de recuperação destes agentes com diferentes solubilidades sangüíneas. O objetivo deste(More)
BACKGROUND AND OBJECTIVES Rocuronium is an intermediate nondepolarizing neuromuscular blocker (NMB) with faster onset and indicated in situations requiring rapid tracheal intubation. Intravenous lidocaine is often used to decrease hemodynamic responses to tracheal intubation. The association of NMB to local anesthetics results in potentiation of NMB(More)