Since the introduction of pulmonary artery catheterization for hemodynamic monitoring, several complications associated with its use have been described. Pulmonary artery rupture is an infrequent complication of flow‐directed pulmonary artery catheters. We report a case of pulmonary artery rupture complicating rescue PTCA in the presence of systemic platelet inhibition with abciximab (Reopro), anticoagulation, and thrombolytic therapy. With the increasing use of these medications in patients undergoing acute coronary interventions, particularly those patients requiring hemodynamic monitoring, this uncommon but potentially fatal complication may be seen more frequently. Cathet. Cardiovasc. Intervent. 46:89–91, 1999. © 1999 Wiley‐Liss, Inc.