RT Journal Article SR Electronic T1 Adverse neonatal effects of maternal labetalol treatment JF Archives of Disease in Childhood - Fetal and Neonatal Edition JO Arch Dis Child Fetal Neonatal Ed FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP F150 OP F151 DO 10.1136/fn.79.2.F150 VO 79 IS 2 A1 B N A Crooks A1 S A Deshpande A1 C Hall A1 M P Ward Platt A1 D W A Milligan YR 1998 UL http://fn.bmj.com/content/79/2/F150.abstract AB Two infants with features of severe β adrenergic blockade, pericardial effusions, and myocardial hypertrophy were born to mothers receiving long term treatment with oral labetalol for hypertension in pregnancy. Labetalol was implicated in the aetiology of these problems. Pericardial effusion and myocardial hypertrophy have not been associated with labetalol toxicity in neonates.