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Titolo:
PROGRESSION OF LABOR IN TWIN VERSUS SINGLETON GESTATIONS
Autore:
SCHIFF E; COHEN SB; DULITZKY M; NOVIKOV I; FRIEDMAN SA; MASHIACH S; LIPITZ S;
Indirizzi:
CHAIM SHEBA MED CTR,J BUCHMAN MATERN CTR IL-53653 TEL HASHOMER ISRAEL TEL AVIV UNIV,SHEBA MED CTR,DEPT EPIDEMIOL IL-69978 TEL AVIV ISRAEL OREGON HLTH SCI UNIV,DEPT OBSTET & GYNECOL PORTLAND OR 97201 TEL AVIV UNIV,SHEBA MED CTR,DEPT OBSTET & GYNECOL TEL AVIV ISRAEL
Titolo Testata:
American journal of obstetrics and gynecology
fascicolo: 5, volume: 179, anno: 1998,
pagine: 1181 - 1185
SICI:
0002-9378(1998)179:5<1181:POLITV>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Keywords:
FIRST STAGE OF LABOR; PARTOGRAM; TWIN GESTATIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
13
Recensione:
Indirizzi per estratti:
Citazione:
E. Schiff et al., "PROGRESSION OF LABOR IN TWIN VERSUS SINGLETON GESTATIONS", American journal of obstetrics and gynecology, 179(5), 1998, pp. 1181-1185

Abstract

OBJECTIVE: The aim of this study was to investigate whether labor curves of twin gestations differ from those of singleton gestations. STUDY DESIGN: Among 1821 twin deliveries at our institution (1984-1996), we found 69 nulliparous and 94 multiparous women who were delivered at term (greater than or equal to 37 weeks) of a vertex twin A with a birth weight of greater than or equal to 2500 g. We excluded women who had any of the following: induction of labor, oxytocin augmentation, cervical dilatation >6 cm on admission, tocolysis during the previous 14 days, height <150 cm, hypertension, and diabetes. Women with singletongestations (n = 163) who met the same exclusion criteria were matchedfor parity and maternal age (+/-3 years). Stage 1 of labor was defined as the interval between 4 and 10 cm cervical dilatation. Kaplan-Meier survival analysis was used for comparison between the groups. RESULTS: The study and control groups were similar in mean maternal height; however, women with twins were significantly heavier than were those with singletons (79.3 +/- 11.2 kg vs 73.2 +/- 10.8 kg, P < .001), had ahigher frequency of epidural anesthesia (82% vs 62%), and had a significantly lower birth weight of the presenting fetus (2779.1 +/- 242.5 g vs 3301.4 +/- 429.2 g, P < .001). The cervical effacements and vertex stations on admission were similar in the 2 groups. On admission thecervical dilatation of women delivered of twins was smaller than thatof the control group. Twin gestations had a significantly shorter first stage of labor than did their matched singleton control gestations (3.0 +/- 1.5 hours vs 4.0 +/- 2.6 hours, P < .0001). This difference was apparent only in nulliparous women. No statistical difference was noted in the mean length of the second stage of labor (0.8 +/- 0.5 hourfor twins and 0.7 +/- 0.6 hour for singletons). CONCLUSION: Twin gestations have a significantly shorter first stage of labor than do singleton gestations. This difference may be the result of the birth weightof the presenting twin being lower than that of its singleton counterpart or to differences in uterine contractility in twin and singleton gestations. Different labor curves should be considered for managing twin deliveries.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/07/20 alle ore 16:04:13