Pseudonormalized doppler totalejection isovolume (Tei) index in patients with right ventricularacute myocardial infarction

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The Doppler total ejection isovolume (Tei) index is useful for estimating global cardiac function. However, the relation between the right ventricular (RV) Tei index and RV infarction has not been investigated. The relation between the RV Tei index and severity of RV infarction was evaluated in 25 patients with inferior wall acute myocardial infarction (13 with and 12 without RV infarction). RV infarction was diagnosed when right atrial pressure wasor = 10 mm Hg or when right atrial pressure/pulmonary capillary wedge pressure was0.8 by catheterization. The RV Tei index was significantly increased in patients with RV infarction compared with those without (0.53 +/- 0.15 vs 0.38 +/- 0.14, p0.05). The RV Tei index in patients with severe RV infarction (right atrial pressureor = 15 mm Hg) was significantly smaller compared with those with mild/moderate RV infarction (right atrial pressure15 mm Hg) and showed no significant difference in patients with myocardial infarction but without RV infarction (0.44 +/- 0.09 vs 0.61 +/- 0.16 vs 0.38 +/- 0.14, severe RV infarction vs mild/moderate RV infarction vs no RV infarction, p0.01). The RV Tei index is generally increased in patients with RV infarction; however, severe RV infarction can be manifested with limited or no increase in the Tei index (pseudonormalization).

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