Myocardial infarction (MI) may alter left ventricular (LV) systolic function, which, in turn, may reflect on functional capacity. Objective systolic function assessment using 2D speckle-tracking echocardiography is promising to assess the correlation between LV longitudinal strain and strain rate with functional capacity in post-MI patients with heart failure. A cross-sectional study was done on 33 consecutive post-MI patients with class I-II NYHA heart failure visiting the cardiology outpatient clinic of Dr. Soetomo General Hospital, Surabaya. The resting echocardiogram was taken, followed by a treadmill stress test using Naughton protocol. Appropriate statistical analyses were used to determine the correlation of systolic longitudinal strain and strain rate with exercise capacity. Study subjects were 69.7% males with age 58.45±6.2 years old. EF by Biplane was 40.55±8.26%; with global peak longitudinal strain-12.23±5.19%, and strain rate-0.67±0.25s-1; and peak exercise capacity 3.69±1.8 METs. Using Pearson's test, there was a strong negative correlation of systolic longitudinal strain and strain rate with functional capacity (r =-0.577, r =-0.607respectively; p<0.05). LV systolic longitudinal strain and strain rate were strongly correlated with functional capacity in post-MI patients with heart failure.
|Journal||IOP Conference Series: Earth and Environmental Science|
|Publication status||Published - 24 Feb 2020|
|Event||2nd International Conference on Fisheries and Marine Science, InCoFiMS 2019 - Surabaya, Indonesia|
Duration: 26 Sept 2019 → …