Pituitary

 Two-dimensional speckle tracking echocardiography demonstrates no effect of active acromegaly on left ventricular strain
01/06/2017 00:00
 

Abstract

Background

Speckle tracking echocardiography (STE) allows for the study of myocardial strain (?), a marker of early and subclinical ventricular systolic dysfunction. Cardiac disease may be present in patients with acromegaly; however, STE has never been used to evaluate these patients.

Objective

To evaluate left ventricular (LV) global longitudinal strain in patients with active acromegaly with normal LV systolic function.

Design

Cross-sectional clinical study.

Methods

Patients with active acromegaly with no detectable heart disease and a control group were matched for age, gender, arterial hypertension and diabetes mellitus underwent STE. Global LV longitudinal ? (GLS), left ventricular mass index (LVMi), left ventricular ejection fraction (LVEF) and relative wall thickness (RWT) were obtained via two-dimensional (2D) echocardiography using STE.

Results

Thirty-seven patients with active acromegaly (mean age 45.6?±?13.8; 48.6% were males) and 48 controls were included. The mean GLS was not significantly different between the acromegaly group and the control group (in %, ?20.1?±?3.1 vs. ?19.4?±?2.2, p?=?0.256). Mean LVMi was increased in the acromegaly group (in g/m2, 101.6?±?27.1 vs. 73.2?±?18.6, p?<?0.01). There was a negative correlation between LVMi and GLS (r?=??0.39, p?=?0.01).

Conclusions

Acromegaly patients, despite presenting with a higher LVMi when analyzed by 2D echocardiography, did not present with impairment in the strain when compared to a control group; this finding indicates a low chance of evolution to systolic dysfunction and agrees with recent studies that show a lower frequency of cardiac disease in these patients.