Articles: general-anesthesia.
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Acta Obstet Gynecol Scand · Jan 1979
Acid-base balance during laparoscopy. The effects of intraperitoneal insufflation of carbon dioxide and nitrous oxide on acid-base balance during controlled ventilation.
During laparoscopy the carbon dioxide used to achieve a pneumoperitoneum is absorbed from the peritoneal cavity into the blood. The object of the present study was to clarify certain aspects concerned with anesthetic and ventilatory techniques, mostly in connection with the comparison between the effects of insufflation of either carbon dioxide or nitrous oxide. ⋯ The results show a sharp rise in PaCO2 and a fall in pH after intraperitoneal insufflation with carbon dioxide, while no changes were observed when nitrous oxide was used. The clinical consequences of these findings are discussed.
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This study was designed to re-evaluate neonatal condition at birth following elective cesarean section performed with epidural anesthesia and a modified technique of general anesthesia. Two groups of 20 patients were studied. Twenty received epidural anesthesia with 2 per cent lidocaine-carbon dioxide-epinephrine, and 20 patients were given general anesthesia. ⋯ No significant differences in oxygen tension and acid-base balance in umbilical venous and arterial blood were demonstrated between the two sets of neonates. One-and five-minute Apgar scores and time to sustained respiration were similar in both groups. Our observations of the infants immediately after delivery led us to conclude that either anesthesia technique is acceptable for elective cesarean section.