A026 Use and Safety of Pressure Wire Studies During Coronary Angiography in New Zealand - A National Analysis – ANZACS QI - 39

Abstract

To compare baseline characteristics in patients who undergo a pressure wire study (PWS). Also to describe the characteristics of patients with haemodynamically significant (FFR < 0.8) lesions and their treatment disposition. We used the “All New Zealand Acute Coronary Syndrome Quality Improvement” program (ANZACS-QI) web-based system. This data set includes all patients undergoing a diagnostic coronary angiogram (DCA) between the dates 01/09/14 – 01/09/17. During this period 46281 procedures were done. 28258 were diagnostic coronary angiograms (DCA) and 18025 underwent PCI. In total 1901 patients had 2201 PWS performed. 677 patients went on to have PCI. PWS was done in 4.6% of all patients having a coronary angiogram. Patients that had a PWS were more commonly men (71%) of European descendent (76%). The most common indication for a PWS was an acute coronary syndrome (ACS). 35% of these had a PCI. The left anterior descending artery was the most common territory for PWS. Only 60% of patients with an FFR < 0.8 proceeded to PCI. 429 FFR results were borderline positive (FFR 0.75-0.79). 34% did not have PCI. 572 FFR results were borderline negative (FFR 0.8-0.85). 16% had PCI. Performing a PWS did not increase in-hospital MACE. This is one of the largest real world analysis of PWS use. It shows which patients and coronary territories are likely to have a PWS and characteristics which lead to positive results and PCI. It shows that PWS are safe without an increase of in-hospital MACE.