10027/20191
Ibrahim N. Mansour
Ibrahim N.
Mansour
Left Ventricular Strain Predicts Heart Failure Admissions in African Americans with Heart Failure
University of Illinois at Chicago
2016
Left ventricular strain
African american
Admission
Heart failure
2016-02-16 00:00:00
Thesis
https://indigo.uic.edu/articles/thesis/Left_Ventricular_Strain_Predicts_Heart_Failure_Admissions_in_African_Americans_with_Heart_Failure/10822991
Left ventricular global longitudinal strain (LV GLS) is a sensitive measure of LV mechanics that has been correlated with adverse events in patients with heart failure. Previous studies have included few African American (AA) patients.
We enrolled 207 AA adults, age 56 ± 14.5 years, with New York heart Association (NYHA) class I through III HF on optimal guideline-directed medical therapy (GDMT) from the University of Illinois HF clinic between November 2001 and February 2014. LV GLS was assessed by velocity vector imaging using 2, 3 and 4-chamber views. Patients were followed for HF admissions and death for 3 ± 3.0 years. LV GLS value of -7.95 was used as the optimal cutoff point that maximizes sensitivity and specificity
LV GLS >-7.95% was significantly associated with higher all-cause mortality and HF admissions in Kaplan-Meier survival curves (log-rank P<0.001). After incorporated in a multivariate Cox proportional hazard models, GLS > -7.95% was found to be an independent predictor of all-cause mortality (HR=4.20; 95% CI 1.14-15.56; p =0.014) and HF admissions (HR3.86; 95% CI 1.38-10.77; p =0.010).
In AA patients with chronic stable HF on GDMT, more impaired LV GLS (>-7.95%) is a strong and independent predictor of long-term all-cause mortality and HF admission.