Usefulness of Tissue Doppler Parameters for Identifying Pulmonary Embolism in Patients With Signs of Pulmonary Hypertension

Shih Hung Hsiao, Shu Mei Chang, Chiu Yen Lee, Shu Hsin Yang, Shih Kai Lin, Kuan Rau Chiou

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

The objective of this study was to use tissue Doppler parameters to identify pulmonary embolism (PE) in patients with echocardiographic signs of pulmonary hypertension. One hundred fifty patients with echocardiographic signs of pulmonary hypertension were enrolled, 50 of whom had PE on multidetector row computed tomography of the chest. Another 150 patients without cardiopulmonary distress or echocardiographic signs of pulmonary hypertension served as a control group. All patients were in sinus rhythm. Routine echocardiography and tissue Doppler imaging were performed. The right ventricular (RV) myocardial performance index (MPI) was obtained during tissue Doppler imaging over the lateral tricuspid annulus. The M index was measured and defined as the peak early diastolic mitral inflow velocity divided by the RV MPI. Statistical analysis was preformed using receiver-operating characteristic curves. Peak early diastolic mitral inflow velocity was significantly less and the RV MPI was significantly greater in patients with PE than in patients without PE (both p values <0.0001). The RV MPI and the M index were useful in identifying PE in patients with echocardiographic signs of pulmonary hypertension. On statistical analysis, a RV MPI >0.55 identified PE with a sensitivity of 85% and a specificity of 78%. A M index <112 had a sensitivity of 92% and a specificity of 92%. In conclusion, the sensitivity and specificity of the RV MPI and the M index to identify PE were excellent. Echocardiography is a useful method to screen for PE.

Original languageEnglish
Pages (from-to)685-690
Number of pages6
JournalAmerican Journal of Cardiology
Volume98
Issue number5
DOIs
Publication statusPublished - Sep 1 2006
Externally publishedYes

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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