[Comparison of metaraminol, phenylephrine and ephedrine in prophylaxis and treatment of hypotension in cesarean section under spinal anesthesia].

Maternal hypotension is a common complication after spinal anesthesia for cesarean section, with deleterious effects on the fetus and mother. Among the strategies aimed at minimizing the effects of hypotension, vasopressor administration is the most efficient. The aim of this study was to compare the efficacy of phenylephrine, metaraminol, and ephedrine in the prevention and treatment of hypotension after spinal anesthesia for cesarean section.

[Effect of ropivacaine on neuronal norepinephrine reuptake in smooth muscle.].

Background And Objectives: In addition to local anesthetic action, ropivacaine has clinically significant vasoconstrictor effects, which may be observed at infiltrative anesthesia, making it an important anesthetic for field blockade. This study aimed at characterizing the constrictor mechanism of ropivacaine on smooth muscles.

Methods: Norepinephrine concentration-effect curves in the absence or presence of ropivacaine were plotted on isolated preparations of vas deferens of rats.

[Epidural caudal block: evaluation of length of analgesia with the association of lidocaine, fentanyl and clonidine.].

Background And Objectives: The association of different substances to local anesthetics aims to improve the blockade quality and prolonging analgesia. The aims of this study were to compare the effectiveness of the association of clonidine, clonidine and fentanyl, and fentanyl, to lidocaine for postoperative analgesia.

Methods: Participated in this study 64 patients aged 23 years or above, physical status ASA I or II, undergoing to orificial proctologic surgery under epidural caudal anesthesia.

[Anesthesiologists blood pressure during surgical anesthetic procedures in the morning.].

Background And Objectives: Systemic arterial hypertension affects approximately 20% of the world population, depending on the interaction between genetic predisposition and environmental factors. Stresses inherent to the anesthesiologists work might reflect in the cardiovascular system, influencing professionals blood pressure. This study aimed at verifying whether the practice of anesthesia is a triggering factor for anesthesiologists blood pressure changes during surgical anesthetic procedures.