Invasive hemodynamic monitoring in the obstetric patient.

The pulmonary artery catheter, although initially used by internists and anesthesiologists, has recently entered the armamentarium of the maternal/fetal medicine specialist. Expertise in gaining central venous access and correct placement of the catheter is required. The physician should be familiar with the indications for its use in the obstetric patient, as well as the potential complications. With correct interpretation of the parameters obtained, the pulmonary artery catheter can be an invaluable aid in the management of the critically ill obstetric patient.