Rest and stress echocardiographic predictors of outcomes in patients with HCM

OutcomesResting examStress exam
Cardiovascular death

- LA size

- LV diastolic and systolic dysfunction

- Resting LVOT obstruction

- Progression of MR

- RV dysfunction

Exercise:

- MR ≥ moderate

- Increased E/e’

- WMAs

- PHT

Vasodilator:

CFVR

SCD

- Degree of hypertrophy

- “Mixed” apical HCM

- LA size and function

- LV diastolic and systolic dysfunction

- Resting LVOT obstruction

- Apical aneurysms

Exercise:

PHT

HF with/without hospitalization

- “Mixed” apical HCM

- LA size

- LV diastolic and systolic dysfunction

- Progression of MR

- RV dysfunction

Exercise:

- MR ≥ moderate

- Increased E/e’

- WMAs

- PHT

Vasodilator:

CFVR

Ventricular arrhythmias

- “Mixed” apical HCM

- LA size and function

- LV diastolic and systolic dysfunction

- Resting LVOT obstruction

- Apical aneurysms

- RV dysfunction

Exercise:

- MR ≥ moderate

- Increased E/e’

- WMAs

Vasodilator:

CFVR

AFLA size and function

Vasodilator:

CFVR

StrokeResting LVOT obstruction

Exercise:

- MR ≥ moderate

- Increased E/e’

- WMAs

- PHT

Vasodilator:

CFVR

AF: atrial fibrillation; CFVR: coronary flow velocity reserve; E/e’: early LV inflow velocity to early tissue Doppler annulus velocity; LA: left atrial; LV: left ventricular; LVOT: LV outflow tract; MR: mitral regurgitation; PHT: pulmonary hypertension; RV: right ventricular; SCD: sudden cardiac death; WMAs: wall motion abnormalities