Is a breech presentation at term more frequent in women with a history of cesarean delivery?
OBJECTIVE
The purpose of this study was to determine whether breech presentation at term is more common among women with at least 1 previous cesarean delivery.


METHODS
This historic cohort study (n = 84,688) included women with a singleton term pregnancy and at least 1 previous delivery. Results were expressed as crude relative risks and adjusted odds ratios.


RESULTS
While 2.46% of women had a fetus in breech presentation at term, 14.91% of women had had 1 or more previous cesareans. The relative risk of a breech presentation at term for women with a history of cesarean was 2.18 (95%CI: 1.98-2.39). It did not differ according to the number of previous cesareans. The logistic regression analysis took into account confounding factors including gestational age, maternal age, parity, birthweight, and oligohydramnios. The adjusted odds ratio was 2.12 (95%CI: 1.91-2.36).


CONCLUSIONS
Women with previous cesarean deliveries have a risk of breech presentation at term twice that of women with previous vaginal deliveries.
Vendittelli
Françoise
F
Association des Utilisateurs de Dossiers Informatisés en Pédiatrie, Obstétrique et Gynécologie sentinel network, Lyon, France. fvendittelli@chuclermontferrand.fr
Rivière
Olivier
O
Crenn-Hébert
Catherine
C
Rozan
Marc-Alain
MA
Maria
Bernard
B
Jacquetin
Bernard
B
D000328:Adult; D015992:Body Mass Index; D001946:Breech Presentation / Q000453:epidemiology*; D002921:Cicatrix / Q000453:epidemiology; D015986:Confounding Factors, Epidemiologic; D005260:Female; D005602:France / Q000453:epidemiology; D006801:Humans; D016015:Logistic Models; D008423:Maternal Age; D016017:Odds Ratio; D011247:Pregnancy; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology; D016064:Vaginal Birth after Cesarean / Q000706:statistics & numerical data*