Study objective: Our purpose was to study the
relationship between snoring and pregnancy-induced hypertension and
growth retardation of the fetus.
cross-sectional, consecutive case series.
Department of Gynecology and Obstetrics, University Hospital, Umeå,
Participants and measurements: On the day of
delivery, 502 women with singleton pregnancies completed a
questionnaire about snoring, witnessed sleep apneas, and daytime
fatigue. Data concerning medical complications were taken from the
Results: During the last week
of pregnancy, 23% of the women reported snoring every night. Only 4%
reported snoring before becoming pregnant. Hypertension developed in
14% of snoring women, compared with 6% of nonsnorers (p < 0.01).
Preeclampsia occurred in 10% of snorers, compared with 4% of
nonsnorers (p < 0.05). An Apgar score ≤ 7 was more common in
infants born to habitual snorers. Growth retardation of the fetus,
defined as small for gestational age at birth, had occurred in 7.1% of
the infants of snoring mothers and 2.6% of the remaining infants
(p < 0.05). Habitual snoring was independently predictive of
hypertension (odds ratio [OR], 2.03; p < 0.05) and growth
retardation (OR, 3.45; p < 0.01) in a logistic regression analysis
controlling for weight, age, and
Conclusions: Snoring is common in
pregnancy and is a sign of pregnancy-induced hypertension. Snoring
indicates a risk of growth retardation of the fetus.