Spinal anesthesia for cesarean section: comparative study between isobaric and hyperbaric bupivacaine associated to morphine.

Background And Objectives: Bupivacaine preparations, plain or with glucose, are frequently used in the clinical practice. Blockade upper level is determined by local anesthetic spread in the CSF. This study aimed at comparing isobaric and hyperbaric bupivacaine in patients submitted to spinal anesthesia for Cesarean section.

[Association of fentanyl or sufentanil an 0.5% isobaric bupivacaine in spinal anesthesia: a comparative study.].

Background And Objectives: Since the discovery of opioid receptors and the increase in spinal cord neuropharma- cological knowledge as to transmission and inhibition of nociceptive stimulations, there has been an increased interest in spinal drugs for anesthesiology and pain relief. This study aimed at prospectively evaluating the clinical efficacy of fentanyl (25 microg) and sufentanil (5 microg) with isobaric bupivacaine (10 mg), in patients submitted to spinal anesthesia for varicose vein surgery.

Methods: Participated in this study 60 patients, physical status ASA I and II, aged below 60 years, submitted to spinal anesthesia for varicose vein sugery, who were randomly distributed in three groups: B (10 mg isobaric bupivacaine), BF (10 mg isobaric bupivacaine and 25 microg fentanyl) and BS (10 mg isobaric bupivacaine and 5 microg sufentanil).