Anaesthetic management of a parturient with prior myocardial infarction and coronary artery bypass graft

Pregnancy in women with pre-existent ischaemic heart disease: a systematic review with individualised patient data

INTRODUCTION

Studies on pregnancy risk in women with ischaemic heart disease (IHD) have mainly excluded pregnancies in women with pre-existent IHD. There is a need for better information about the pregnancy risks in these women and their offspring.

METHODS

We performed a systematic review searching the PubMed/MEDLINE public database for pregnancy in women with pre-existent IHD analysing the cardiac, obstetric and fetal/neonatal outcome of pregnancy in women with pre-existing IHD. Individual patient data were requested from large series. The primary outcome endpoints was a composite of ischaemic complications including maternal death, acute coronary syndrome and ventricular tachycardia.

RESULTS

116 women with pre-existent IHD had 124 pregnancies including one twin pregnancy. They had a 21% chance of having an uncomplicated pregnancy (completed pregnancy without cardiovascular, obstetric or fetal/neonatal complications, n=26). Primary (ischaemic) endpoints occurred in 9% (n=11). Women with atherosclerosis had more cardiovascular complications compared with pregnancies in women with other underlying pathology for IHD (50%vs23%, P=0.02) but no significant difference in occurrence of primary endpoints (13% vs 9%, P=0.53). There were two maternal cardiac deaths (2%), one of which occurred in the 18th week of pregnancy and the other postpartum. Obstetric complications occurred in 58% (n=65) of pregnancies and fetal/neonatal complications in 42% (n=47).

CONCLUSION

Pregnancies in women with pre-existing IHD are high-risk pregnancies. These women have a high risk of ischaemic cardiovascular complications including 2% maternal mortality. The risk of ischaemic complications is especially high among women with atherosclerotic coronary artery disease.

Neuraxial anaesthesia in parturient with cardiac disease

Parturient with corrected or uncorrected cardiac problem may undergo neuraxial anaesthesia for several reasons and in different trimesters. The altered physiological state in a parturient is further deranged in the presence of a cardiovascular lesion, producing the added risk to the parturient undergoing a neuraxial block. A detailed evaluation, knowledge regarding cardiovascular disease state, more vigilant monitoring, and a team approach can lead to a successful outcome.

Labor analgesia for the parturient with cardiac disease: what does an obstetrician need to know?

Maternal heart disease complicates 0.2-3% of pregnancies. The optimal management of the pregnant patient with cardiac disease depends on the cooperative efforts of the obstetrician, the cardiologist and the anesthesiologist involved in peripartum care. A comprehensive understanding of physiology of pregnancy and pathophysiology of underlying cardiac disease is of primary importance in provision of obstetric analgesia or anesthesia for this high-risk group of patients. This article will review the current guidelines and standards pertinent to management of obstetric analgesia and anesthesia in parturients with cardiac disease.