Cardiology MCQ – Coronary vasomotor function – Answer
Cardiology MCQ – Coronary vasomotor function – Answer
Most validated and accurate noninvasive test for the quantitative assessment of coronary vasomotor function:
Correct answer: 1. Positron emission tomography
PET uses rest and vasodilator stress myocardial perfusion study after injection of blood flow radiotracers like 82Rubidium or 13N-ammonia. Image post processing yields regional and global myocardial blood flow in ml/min/g of myocardium. Coronary flow reserve is calculated as the ratio of stress to rest myocardial blood flow [1].
Assessing coronary flow reserve is important in patients with coronary microvascular disease. There are several persons with angina and positive stress test but having non obstructive coronaries on angiography. They can still have adverse cardiovascular events in spite of non obstructive coronaries.
Back to question
Reference
Taqueti VR, Di Carli MF. Coronary Microvascular Disease Pathogenic Mechanisms and Therapeutic Options: JACC State-of-the-Art Review. J Am Coll Cardiol. 2018 Nov 27;72(21):2625-2641.
Source: Cardiophile MD - Category: Cardiology Authors: Prof. Dr. Johnson Francis Tags: Cardiology MCQ DM / DNB Cardiology Entrance Source Type: blogs