Resting oxygen consumption in patients with twin pregnancy.
OBJECTIVE
This study examined the resting oxygen consumption in patients with a twin pregnancy and compared the results with those of singleton pregnancies.


METHODS
In 15 patients with a twin and 26 patients with a singleton pregnancy, the resting oxygen consumption was measured using an open-circuit ventilatory system during the third trimester of pregnancy.


RESULTS
The average resting oxygen consumption in patients with a twin pregnancy was 231+/-25 ml/min, significantly higher than that in patients with a singleton pregnancy (209+/-24 ml/min, P<0.05).


CONCLUSIONS
Our results indicate an estimated increase in metabolic rate in patients during the third trimester of a twin pregnancy compared with those with a singleton pregnancy.
Suzuki
Shunji
S
Department of Obstetrics and Gynecology, Tokyo Rinkai Hospital, 1-4-2 Rinkai-cho, Edogawa-ku, Tokyo, 134-0086, Japan. czg83542@mopera.ne.jp
Shinagawa
Shino
S
Chihara
Hiromitsu
H
Otsubo
Yasuo
Y
Takeuchi
Tsutomu
T
Sawa
Rintaro
R
Yoneyama
Yoshio
Y
Takeshita
Toshiyuki
T
Araki
Tsutomu
T
D000328:Adult; D005260:Female; D006801:Humans; D010100:Oxygen / Q000032:analysis*; D010101:Oxygen Consumption / Q000502:physiology*; D011247:Pregnancy; D011263:Pregnancy Trimester, Third / Q000502:physiology; D011272:Pregnancy, Multiple / Q000502:physiology*; D012146:Rest; D014427:Twins
D010100:Oxygen