Usefulness of right ventricular basal free wall strain by two-dimensional speckle tracking echocardiography in patients with chronic thromboembolic pulmonary hypertension

Kenji Shiino, Kunihiko Sugimoto, Akira Yamada, Kayoko Takada, Hideki Kawai, Keiko Sugimoto, Hiroshi Takahashi, Yasushi Takagi, Masatsugu Iwase, Yukio Ozaki

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Recently two-dimensional (2D) speckle tracking echocardiography (STE) derived from right ventricular (RV) free wall has been shown to be a very useful tool for the estimation of RV performance. The purpose of this study was to examine whether RV basal free wall strain can detect increased mean pulmonary arterial pressure (mPAP) in patients with chronic thromboembolic pulmonary hypertension (CTEPH). We investigated a total of 126 patients with CTEPH (mean age, 56 ± 12 years). They underwent echocardiography and right heart catheter examination. 2D STE-derived longitudinal strain was measured by placing 2 regions of interests (ROIs) on the RV basal free wall in RV-focused apical 4-cham-ber view. Peak strain (RV-PS) was acquired between the 2 ROIs. Conventional echocardiographic RV parameters (RV fractional area change, RV myocardial performance index, tricuspid annular plane systolic excursion, tricuspid annular peak systolic velocity, and tricuspid regurgitant pressure gradient) were evaluated as well. Right heart catheterization was performed on the day following of echocardiographic evaluation. Among RV echo parameters, RV-PS showed the best correlation with mPAP (r = 0.75, P < 0.0001). Receiver operating characteristic analysis revealed that a cut-off value of RV-PS -20.8% could detect mPAP ≧ 25 mmHg (sensitivity 78%, specificity 93%, area under the curve 0.90, P < 0.001). RV basal free wall strain was a useful tool for the non-invasive detection of increased mPAP in patients with CTEPH.

Original languageEnglish
Pages (from-to)100-104
Number of pages5
JournalInternational heart journal
Volume56
Issue number1
DOIs
Publication statusPublished - 01-01-2015

All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine

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