Over a standard 0.035 guidewire, coronary angiography and left ventricular pressure measurements were performed using a 6-French JL4 diagnostic catheter to image the left coronary artery, a 6-French JR4 diagnostic catheter to image the right coronary artery, a 6-French angled pigtail catheter to measure left ventricular pressure. 
Over a standard 0.035 guidewire , coronary angiography and left ventricular pressure measurements were performed using a 6 - French JL4 diagnostic catheter to image the left coronary artery , a 6 - French JR4 diagnostic catheter to image the right coronary artery , a 6 - French angled pigtail catheter to measure left ventricular pressure .