Why is it so that if FFR is 0.8, the pressure waveform of the distal coronary vessel loses the dicrotic notch and gets ventricularised ? I didn't get it...
Thank you! you took very complex concepts and explained them in a way that makes them easy to grasp. I have a question related to a comment you made in 38:27 " During equalization your just correcting for error or zeroing and levelling of the transducer, and you are ensuring that both pressures are equally levelled, just inside the guide" so where is the right place for the wire sensor to be: Just outside, just inside of the guide, maybe in the middle?
Thank you. If your question is regarding the effect of Impella on FFR, you may review my Impella talk ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-FF9C5VxIJZM.html, minute 22:37. I cite 2 references, especially an important one that showed that Impella increases distal coronary pressure even past a significant stenosis (unlike IABP). Alqarqaz M, Basir M, Alaswad K, O’Neill W. Effects of Impella on Coronary Perfusion in Patients With Critical Coronary Artery Stenosis. Circ Cardiovasc Interv. 2018;11(4):e005870.
