Bronchodilator effect of inhaled ipratropium bromide in wheezy toddlers.

smoking mothers are thinner and their babies are thinner too, but even accepting the limitations of correction for this effect, the growth-retarding effect of smoking on the fetus is hardly affected by this correction. A similar conclusion was derived from Cardiff Birth Survey data, in a community study on smoking and pregnancy.8 We postulate from our data and from other data already reported, that the growth-retarding effect of maternal smoking on the infant is a complex multifactorial one. It is clear that efforts should be intensified to prevent expectant mothers smoking as there is evidence that there may be long-term effects on children's learning ability later in childhood,9 and we and Davies et al.6 have found a reduction in head circumference in the infants of smoking mothers.