Hypertrophic cardiomyopathy other imaging findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Soroush Seifirad, M.D.[2]

Overview

Positron Emission Tomography (PET) may be helpful in the diagnosis of ischemia in patients with hypertrophic cardiomyopathy. PET studies have demonstrated that coronary flow reserve is reduced in patients with HCM. Those patients who subsequently died had a greater reduction in coronary flow reserve at baseline. It has been hypothesized that this ischemia may mediate in part the higher risk in sudden cardiac death.

Other Imaging Findings

Positron Emission Tomography (PET) may be helpful in the diagnosis of ischemia in patients with hypertrophic cardiomyopathy.

Positron Emission Tomography

Positron Emission Tomography (PET) studies have demonstrated that coronary flow reserve is reduced in patients with HCM. Those patients who subsequently died had a greater reduction in coronary flow reserve at baseline. It has been hypothesized that this ischemia may mediate in part the higher risk in sudden cardiac death.

2011 ACCF/AHA Guideline for the Diagnosis and Treatment of Hypertrophic Cardiomyopathy (DO NOT EDIT)[1]

Detection of Concomitant Coronary Disease (DO NOT EDIT)[1]

Class I
"1. Coronary arteriography (invasive or computed tomographic imaging) is indicated in patients with HOCM with chest discomfort who have an intermediate to high likelihood of CAD when the identification of concomitant CAD will change management strategies. (Level of Evidence: C) "
Class IIa
"1. Assessment of ischemia or perfusion abnormalities suggestive of CAD with single photon emission computed tomography (SPECT) or positron emission tomography (PET) myocardial perfusion imaging (MPI; because of excellent negative predictive value) is reasonable in patients with HCM with chest discomfort and a low likelihood of CAD to rule out possible concomitant CAD. (Level of Evidence: C) "
Class III (No Benefit)
"1. Assessment for the presence of blunted flow reserve (microvascular ischemia) using quantitative myocardial blood flow measurements by PET is not indicated for the assessment of prognosis in patients with HCM. (Level of Evidence: C) "
"2. Routine SPECT MPI or stress echocardiography is not indicated for detection of silent CAD-related ischemia in patients with HCM who are asymptomatic. (Level of Evidence: C) "


References

  1. 1.0 1.1 Gersh BJ, Maron BJ, Bonow RO, Dearani JA, Fifer MA, Link MS, Naidu SS, Nishimura RA, Ommen SR, Rakowski H, Seidman CE, Towbin JA, Udelson JE, Yancy CW (2011). "2011 ACCF/AHA Guideline for the Diagnosis and Treatment of Hypertrophic Cardiomyopathy A Report of the American College of Cardiology Foundation/American Heart Association Task Force on Practice Guidelines Developed in Collaboration With the American Association for Thoracic Surgery, American Society of Echocardiography, American Society of Nuclear Cardiology, Heart Failure Society of America, Heart Rhythm Society, Society for Cardiovascular Angiography and Interventions, and Society of Thoracic Surgeons". Journal of the American College of Cardiology. 58 (25): e212–60. doi:10.1016/j.jacc.2011.06.011. PMID 22075469. Retrieved 2011-12-19. Unknown parameter |month= ignored (help)

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