분만진통 제 2 기에서의 모체의 산소흡입이 제대혈액가스분석 결과에 미치는 영향 = The Effect of Maternal Oxygenation during the Second Stage of Labor on Umbilical Cord Blood Gas Values

다국어 초록 (Multilingual Abstract)

The purpose of this study was to evaluate the effect of maternal oxygen inhalation during the second stage of labor on umbilical cord blood gas and co-oxymetry values. Seventy four normal term singleton nulliparous gravidas were randomized into the study and divided into 3 groups. In therapy groups, patients received oxygen by a tight fitting face mask during the second stage of labor until fetal delivery at flow rates of 5 L/min(group II) and 10 L/min(group III). Patients who did not receive oxygen were classified as control group(group I). After delivery, umbilical arterial and arterial and venous blood gas analyses and co-oxymetry were done. The results of group I and II did not show significant differences except venous pCO2(42.4±5.6 vs 39.1±5.2, p2 value(21.5±4.9 vs 18.5±4.7, p2 and O2 saturation values(26.4±5.3 vs 22.8±6.3, 43.7±12.4 vs 35.4±13.8, respectively; p2 saturation and volume %O2 were recorded significantly lower value in group III than in group I. However, cord pH in group III was higher than that of control group, but the difference was statistically not significant. In conclusion, high-flow oxygen therapy(10L/min) to normal term laboring women, may guarantee fetal or neonatal acid-base balance.