[Determination of intrauterine pressure using catheter-tip transducer inserted outside fetal membranes].
Nihon Sanka Fujinka Gakkai Zasshi
; 45(12): 1399-403, 1993 Dec.
Article
en Ja
| MEDLINE
| ID: mdl-8270824
ABSTRACT
To determining intrauterine pressure outside fetal membranes, we used a catheter-tip transducer to study 20 women before the occurrence membrane rupture. Their mean age was 28.2 +/- 3.4 years and all women were in weeks 37 to 41 of pregnancy when studied. In the first stage of labor, the peak intrauterine pressure was 60.0 +/- 12.5 mmHg (mean +/- SD) when the external os was dilated 4 to 6 cm, 90.0 +/- 14.8 mmHg, at 7 to 8 cm dilation, and 80.0 +/- 11.5 mmHg at 9 cm or greater dilation. Each pressure wave lasted 45 to 55 sec. The highest baseline pressure (28.0 +/- 4.5 mmHg) was obtained when the subjects were sitting. A baseline pressure of 17.0 +/- 4.0 mmHg was obtained in the supine position, as well as a value of 21.0 +/- 3.5 mmHg in the recumbent position. There were no complications related to the catheter-tip transducer. Our findings indicate that this method is both accurate and reliable in determining the amounts of intrauterine pressure to which fetal membranes are subjected.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Contracción Uterina
/
Trabajo de Parto
Límite:
Adult
/
Female
/
Humans
/
Pregnancy
Idioma:
Ja
Revista:
Nihon Sanka Fujinka Gakkai Zasshi
Año:
1993
Tipo del documento:
Article