Evaluating Microvascular Dysfunction in Symptomatic Patients With HypertroPhic CaRdiomyopathy

Evaluating Microvascular Dysfunction in Symptomatic Patients With HypertroPhic CaRdiomyopathy: The Index of MicrovAscular Resistance (IMR)

Patients with hypertrophic cardiomyopathy are being compared to a control group. IMR will be assessed with a pressure wire. Clinical f/u at 3 months and 6 months and a 48 hour holter monitor.

Inclusion Criteria:

• Age 18-80
• Already have an indication for coronary angiography
• Previous diagnosis of hypertrophic cardiomyopathy (unless control)

Exclusion Criteria:

• Fractional flow reserve found to be significant (FFR < 0.8)
• Already have a condition associated with or likely to be associated with an elevated IMR (diabetes, cardiac syndrome X, takotsubo cardiomyopathy, hypertensive cardiomyopathy, severe aortic stenosis, STEMI)