Coronary Angiography in New Onset Heart Failure with Reduced Ejection Fraction

Indications for Coronary Angiography

The American College of Cardiology recommends coronary angiography for patients with new onset heart failure with reduced ejection fraction (HFrEF) who have angina or significant ischemia, as identifying revascularizable coronary disease directly impacts mortality and morbidity outcomes 2, 3
Coronary angiography is mandatory for patients with new onset HFrEF who have high pretest probability of ischemic disease based on symptoms, as it can identify revascularizable coronary disease 1, 5
The American College of Radiology suggests that coronary angiography is reasonable but not mandatory for patients with chest pain of uncertain cardiac origin who have not had prior coronary evaluation and have no contraindications to revascularization 2, 3

Cardiac MRI with late gadolinium enhancement (LGE-MRI) has diagnostic accuracy of 97% for detecting ischemic myocardial damage, comparable to angiography, making it a safe and economical gatekeeper to angiography 1, 5, 6
LGE-MRI has sensitivity ranging from 67-100%, specificity 96-100%, with positive predictive value of 100% for detecting ischemic etiology 1, 5
Coronary CT angiography algorithm can exclude CAD and obviate need for angiography with a calcium score of zero, and has 100% sensitivity and 95% specificity for detecting ischemic etiology when calcium score >0 1, 5, 6

The American College of Cardiology recommends assessing clinical presentation and proceeding directly to coronary angiography if angina or significant ischemic symptoms are present 2, 3, 4
For asymptomatic or atypical presentations, obtain echocardiography to confirm HFrEF and assess regional wall motion abnormalities, and perform 12-lead ECG looking for Q waves, ST-T changes suggesting prior MI 4, 7
Risk stratification should be performed using non-invasive gatekeeper strategies such as coronary calcium score, LGE-MRI, or stress perfusion imaging (SPECT, PET, or stress MRI) 1, 5, 2

Coronary angiography should be avoided in patients with new onset HFrEF who have only coronary risk factors without angina or ischemic symptoms, as angiography is not beneficial for differentiating ischemic from non-ischemic etiologies in this population 1, 5, 6
Angiography is not indicated in patients in whom CAD has been excluded as the cause of HFrEF, unless clinical status changes suggesting interim ischemic disease 1, 5, 6
Patients who are not candidates for any form of revascularization should not undergo angiography, as it provides no therapeutic benefit 2, 3