RT Journal Article SR Electronic T1 Aortic dissection during pregnancy. JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 106 OP 108 DO 10.1136/hrt.55.1.106 VO 55 IS 1 A1 C W Pumphrey A1 T Fay A1 I Weir YR 1986 UL http://heart.bmj.com/content/55/1/106.abstract AB Aortic dissection occurred in a nineteen year old woman during the thirty seventh week of pregnancy. Immediate elective delivery of a normal baby by caesarean section was followed by aortic root replacement 48 hours later. It was decided not to proceed immediately to operation on the aortic root because it was believed that the anticoagulation necessary for cardiopulmonary bypass might provoke dangerous haemorrhage from the raw placental site.