Usefulness of Tei index in patients with rheumatic mitral regurgitation and apparently normal left ventricular ejection fraction
| Autor: | Gamela Nasr, Safaa Zaghlool, Mushabab Al-Murayeh, Mohamed Saleh Moselhy, Gamal Elattar |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Cardiac function curve
medicine.medical_specialty Mitral regurgitation Left ventricular ejection fraction Ejection fraction Tei index business.industry Rheumatic mitral regurgitation Rheumatic medicine.anatomical_structure Ventricle Internal medicine medicine Cardiology cardiovascular system In patient Original Article business Isovolumic relaxation time |
| Popis: | Background and aimRheumatic mitral regurgitation is rather common in developing countries. It usually progresses insidiously, because the heart compensates for increasing regurgitant volume by left-atrial enlargement, causes left-ventricular overload and dysfunction, and yields poor outcome when it becomes severe. Doppler-echocardiographic methods can be used to quantify the severity of mitral regurgitation. It is known that ejection fraction underestimates the presence of left ventricular dysfunction in these patients. This study aimed to study global cardiac function of these patients by using LV Tei index.MethodsOne hundred patients with rheumatic mitral regurge predominantly were included (40 males and 60 females; aged 10–24years, median 20.6years). All participants were subjected to full echocardiographic study including total isovolumic index (Tei index=isovolumic relaxation time IRT+isovolumic contraction time ICT/ejection time ET) for the left ventricle. Special attention was paid to grading of severity of the mitral regurgitation.ResultsLV ejection fraction was preserved in all cases but, however, the total left isovolumic index was prolonged 0.56±3 in 64 of them (34 females and 30 males) denoting masked LV dysfunction P |
| Databáze: | OpenAIRE |
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