In‐hospital outcomes of ad hoc versus planned PCI for unprotected left‐main disease: An analysis of 8574 cases from British Cardiovascular Intervention Society database 2006–2018

Background Although data suggests ad hoc percutaneous coronary intervention (PCI) results in similar patient outcomes compared to planned PCI in nonselected patients, data for ad hoc unprotected left main stem PCI (uLMS‐PCI) are lacking. Aim To determine if in‐hospital outcomes of uLMS‐PCI vary by ad hoc versus planned basis. Methods Data were analyzed from all patients undergoing uLMS‐PCI in the United Kingdom 2006–2018, and patients grouped into uLMS‐PCI undertaken on an ad hoc or a planned basis. Patients who presented with ST‐segment elevation, cardiogenic shock, or with an emergency PCI indication were excluded. Results In total, 8574 uLMS‐PCI procedures were undertaken with 2837 (33.1%) of procedures performed on an ad hoc basis. There was a lower likelihood of intervention for stable angina (28.8% vs. 53.8%, p