Evaluation of Left Ventricular Function by Conventional Echocardiography and Tissue Doppler Imaging in Patients with Acute and Chronic Mitral Regurgitation
| Autor: | Bulut Mustafa, Aung Soe Moe, Kargin Ramazan, Akcakoyun Mustafa, Cevik Cihan, Mutlu Halil, Pala Selcuk, Emiroglu Yunus, Özdemir Nihal |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
medicine.medical_specialty
Mitral regurgitation Ejection fraction E/A ratio business.industry flail mitral valve Diastole tissue Doppler imaging Left Atrium Dimension Doppler imaging left ventricle function medicine.anatomical_structure Ventricle Radiology Nuclear Medicine and imaging Internal medicine medicine Cardiology echocardiography Radiology Nuclear Medicine and imaging In patient mitral regurgitation business |
| Zdroj: | Journal of Medical Ultrasound. 19(4):122-127 |
| ISSN: | 0929-6441 |
| DOI: | 10.1016/j.jmu.2011.10.004 |
| Popis: | Left ventricular function is affected differently in acute and chronic mitral regurgitation (MR). Twenty-six patients (12 men and 14 women, average age: 55±20 years) with acute severe MR caused by flail leaflet and 30 patients with chronic severe MR of organic origin (14 men and 16 women, average age: 56±14 years) were included in the study. All of the patients were evaluated in detail by conventional echocardiography and tissue Doppler imaging (TDI). Among conventional echocardiographic parameters, left ventricle ejection fraction (%) was found higher in acute MR (71±5/59±12, p =0.001) whereas left ventricle end-systolic volume, left ventricle end-diastolic volume, left ventricle end-systolic diameter, left ventricle end-diastolic diameter, left atrium dimension, and left atrial area were significantly higher in chronic MR. Among TDI parameters, peak systolic wave velocities (11.4±3.6/8.8±2.5cm/s, p =0.018), peak early diastolic velocities (10.8±4.5/9.3±3.8cm, p =0.03), and contraction time (248±56/219±47ms, p =0.04) were found higher in acute MR, whereas precontraction time (119±29/164±48ms, p =0.005) and precontraction time to contraction time ratio (0.52±0.23/0.78±0.28, p =0.008) were significantly higher in chronic MR. As evaluated by conventional echocardiography, the systolic function of chronic MR was also normal, although it was lower than that of acute MR. We also found that left ventricular systolic and diastolic functions by TDI were also relatively preserved in patients with acute MR when compared with those with chronic MR. |
| Databáze: | OpenAIRE |
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