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No association found between use of very large doses of diazepam by 112 pregnant women for a suicide attempt and congenital abnormalities in their offspring

Foundation for the Community Control of Hereditary Diseases, Budapest, Hungary; Department of Obstetrics and Gynecology, Semmelweis University, School of Medicine, Budapest, Hungary

N Ács

Department of Obstetrics and Gynecology, Semmelweis University, School of Medicine, Budapest, Hungary

F Bánhidy

Department of Obstetrics and Gynecology, Semmelweis University, School of Medicine, Budapest, Hungary

AE Czeizel

Foundation for the Community Control of Hereditary Diseases, Budapest, Hungary czeizel{at}interware.hu

The teratogenic potential of diazepam is debated. The objective of this study was to examine the effects of extremely high doses of diazepam used for attempted suicide during pregnancy on embryo-fetal development. Pregnant women were identified from the female patients of the Department of Toxicology Internal Medicine, Korányi Hospital, Budapest, who had been admitted as self-poisoned subjects from the three million people of Budapest and the surrounding region. This evaluation compares the incidences and types of congenital abnormalities observed in exposed children born to mothers who attempted suicide with diazepam alone or in combination with other drugs during pregnancy with their sib controls. The database consists of a total of 1044 women with self-poisoning during pregnancy between 1960 and 1993. Of these 1044 self-poisoned pregnant women, 229 (21.9%) used diazepam with or without other drugs for a suicide attempt; 112 of these women delivered live-born infants. Doses of diazepam taken ranged between 25 and 800 mg. Of 112 exposed children, 15 (13.4%) had congenital abnormalities, whereas of their 112 matched sibs, eight (7.1%) had congenital abnormalities (odds ratios with 95% confidence intervals: 2.0, 0.8–5.0). Of 37 pregnant women who attempted suicide between the 4th and 12th postconceptional weeks, five (13.5%) delivered live-born babies with a congenital abnormality (undescended testis in two exposed children; congenital dysplasia of the hip, talipes equinovarus deformation type, congenital inguinal hernia—each in one exposed child). The suicide attempts of the mothers of these children did not occur during the critical periods for induction of these defects, indicating that the observations were unrelated to diazepam. The very large doses of diazepam used for self-poisoning during pregnancy did not increase the rate of congenital abnormalities in the offspring.

Key Words: congenital abnormalities • diazepam • suicide attempt during pregnancy

Toxicology and Industrial Health, Vol. 24, No. 1-2, 29-39 (2008)
DOI: 10.1177/0748233708089019


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				G Timmermann, N Acs, F Banhidy, and A. Czeizel A study of the potential teratogenic effects of large doses of drugs rarely used for a suicide attempt during pregnancy Toxicology and Industrial Health, February 1, 2008; 24(1-2): 121 - 131. [Abstract] [PDF]