RT Journal Article SR Electronic T1 Pregnancy and the various forms of the Fontan circulation JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 152 OP 154 DO 10.1136/hrt.2006.091082 VO 93 IS 2 A1 Fiona Walker YR 2007 UL http://heart.bmj.com/content/93/2/152.abstract AB The Fontan operation is performed on those with highly complex congenital heart disease and has improved the survival and quality of life of such patients. Inevitably there are late complications secondary to extensive surgery and long-term survival estimates are about 70% at 10 years and 60–63% at 15 years. Pregnancy therefore requires careful prior consideration. However, the opinion that that pregnancy is not advisable for the Fontan patient is somewhat contentious and maybe an oversimplification of what is a highly emotive and complex issue.