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Salud mental

versión impresa ISSN 0185-3325


BERENZON GORN, Shoshana et al. Riesgos asociados al consumo de alcohol durante el embarazo en mujeres alcohólicas de la Ciudad de México. Salud Ment [online]. 2007, vol.30, n.1, pp.31-38. ISSN 0185-3325.

Alcoholism is among the main worldwide public health problems and it affects men and women differentially. Several studies show that, when compared to men, women develop more severe dependence, more family and social consequences and experience more difficulties to stop drinking.

Differences on the impact that substance abuse has on women’s life and health are related to the roles, functions and social expectancies placed on them concerning the continuity and care for the rest of the family. For this reason, alcohol intake constitutes a special problem since it affects the health of both the mother and her offspring.

Alcoholic women have a higher risk of suffering obstetric complications during pregnancy, such as placenta insufficiency, intrauterine development retardation, early placenta detachment, spontaneous abortion, stillbirth and pre-term delivery. Alcohol abuse during pregnancy is also associated with low weight offspring, congenital abnormalities and further behavioral and learning difficulties. In some countries, drinking during pregnancy is considered an offense which requires legal action. In some cases, women may be put in jail until delivery and lactation. In other regions, children welfare authorities view drinking during pregnancy as a form of aggression or neglect. Such measures prevent women from searching prenatal attention which in its case might lead to severe health consequences for the mother, the embryo and the society.

Estimates of alcohol consumption during pregnancy around the world vary considerably and figures range from 4.1% to 83%. However, the variation might be related to the amount of alcohol units and the period of time considered in each measurement.

A case-control study in Naucalpan, Mexico, found that 11% of the women interviewees admitted having drank during pregnancy, 5% of the mothers in the control group and 2% of the case group stopped drinking during lactation. Still, any of the considered variables was found to predict postnatal mortality through logistic regression analyses. Another study performed with data from the 1988 National Survey on Addictions documents that alcohol intake during pregnancy is a risk factor for congenital abnormalities (OR=3.4).

The available data about the risks associated with drinking during pregnancy in Mexico comes from research in general population, while little is known about clinical population. For this reason, the objectives of this article are: 1. to analyze the characteristics of alcohol consumption in a group of women who sought help to stop drinking, 2. to identify family history of alcohol abuse in this group and 3. to explore the consequences of drinking on their offspring.

In this case study, interviews were held with 200 women who attended two treatment agencies in Mexico City due to alcohol consumption problems. The questionnaire used includes the Spanish version of the CIDI-SAM and other sections to explore drinking during pregnancy and lactation, as well as family history of alcoholism. Selection criteria were: 1. aged 18 or older, 2. seeking help for the first time, 3. physical and mental conditions that would allow to answer the questionnaire, 4. having drank during the previous year.

Women agreed to participate voluntarily once the objectives of the study were explained and confidentiality assured. Personnel of both treatment agencies administered the questionnaire and interviews lasted 60 minutes average. The diagnostics of alcohol dependence were obtained according to DSM-IV criteria. Data were analyzed with the statistical program SPSS v. 10, for Windows.

A total of 134 women reported having been pregnant at least once, and 57.5% of them admitted having drank alcoholic beverages during pregnancy. Age ranged from 18 to 61 years (mean=40), 50% were married or living with a partner, 18% were divorced or separated and 13% had never married. The number of children ranged from 1 to 12 with a mean of 3.

High percentages of family history of alcohol abuse were found among this group (93.5%): mostly the father (72.7%), siblings (63.6%) and the partner (48.1%). Significant differences in family history of alcohol use were found between women who drank during pregnancy and those who did not drink.

Around 66% reduced alcohol intake after the confirmation of pregnancy; however, 26% continued drinking as usual and 6.5% started drinking at this period. The mean number of drinks consumed per drinking occasion during pregnancy was 3.5, being the traditional beverage pulque (48.8%) and beer (34.9%) the preferred beverages. In addition, 9.2% also took medical drugs.

At least three out of the seven criteria proposed in DSM-IV for alcohol dependency were met by 70.3% of the women who drank during pregnancy. More severe dependence was found among the women who drank during pregnancy than among the group of women who abstained.

As to the consequences of drinking, 12% of the women reported spontaneous abortion, 13.7% pre-term deliveries, 5.5% stillbirth, 6.8% congenital abnormalities and 13.7% low birth weight. When comparing women who drank and those who did not during pregnancy, significant differences were found in the percentage of pre-term deliveries (X2=5.63; p=0.01) and congenital abnormalities (X2=4.22; p=0.05).

A number of logistic regression models was assessed using three independent variables: drinking during pregnancy, frequency of alcohol consumption and severity of dependence. Dependent variables, on the other hand, were spontaneous abortion, pre-term delivery, stillbirth, congenital abnormalities, low birth weight, alcohol use by the offspring and drinking problems in the offspring.

The analysis shows that alcohol consumption during pregnancy is related to pre-term deliveries (OR=7.9), and alcohol use by the offspring (OR=2.1). Severity of dependence is related as well to low birth weight (OR=3.7) and further drinking problems in the offspring (OR=2.7). Likewise, drinking every day or almost every day is also related to later drinking problems in their children (OR=2.9). Finally, having siblings who drink (OR=2.11) and meeting alcohol dependency (OR=2.21) criteria are factors that predict alcohol consumption during pregnancy.

These results are consistent with other studies that report positive family history of alcohol abuse among alcoholic women. The proportion of women who stopped drinking during pregnancy (42.5%) is higher than the one reported by other authors. Prevalence of spontaneous abortion, stillbirth and congenital abnormalities are higher than the prevalence reported among general population.

These findings suggest that women with severe dependence face more difficulties to stop drinking during pregnancy in spite of the social stigma imposed to future mothers who drink. The results provide some elements that support an association of alcohol abuse during pregnancy with adverse pregnancy outcomes. Nevertheless, the impact of fetal alcohol exposure responds to a complex model where a number of interacting factors, longitudinal reaserch is needed to determine the weight of each participating variable and the underlying relationship between them.

Palabras llave : Alcoholic women; alcohol consumption; pregnancy; spontaneous abortion; congenital abnormalities; pre-term delivery; Mexico.

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