What are the recommendations for follow-up noninvasive testing in patients with known SIHD?
The recommendations for follow-up noninvasive testing in patients with known Sudden Ischemic Heart Disease (SIHD) depend on the patient's symptoms. For patients with new, recurrent, or worsening symptoms not consistent with unstable angina, it is recommended that patients who are able to exercise undergo exercise stress testing, with or without imaging; and those who are unable to exercise should undergo imaging with either single-photon emission computed tomography (SPECT) or myocardial perfusion imaging (MPI). Irrespective of the patient's ability to exercise, it is recommended that coronary calcium scoring (CCS) or coronary computed tomographic angiography (CCTA) be performed. For patients with asymptomatic or stable symptoms, it is recommended that exercise stress testing with imaging or CCS or CCTA should be performed. Factors influencing the use of follow-up testing include patient risk and testing stability. Repeat stress testing may be useful in patients with known coronary artery disease (CAD). 