The role of tissue Doppler echocardiography in the evaluation of functional capacity of patients with heart failure [Kalp yetersizli?i olan hastalarda fonksiyonel kapasitenin de?erlendirilmesinde doku Doppler ekokardiyografinin rolü]
Küçük Resim Yok
Tarih
2008
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Objectives: We investigated correlations between the New York Heart Association (NYHA) functional classification system, which is commonly used to asses functional capacity, and conventional echocardiographic and tissue Doppler echocardiographic (TDE) parameters in patients with heart failure (HF). Study design: The study included 122 patients (31 females, 91 males; mean age 59±11 years) with HF, whose left ventricular (LV) ejection fraction (EF) was less than 50%. The patients were evaluated in two groups based on the NYHA class I-II (n=79; mean age 58 years) and class III-IV (n=43; mean age 61 years). Correlations were sought between the functional status and standard two-dimensional echocardiographic and TDE parameters. Results: The NYHA class showed significant inverse correlations with LV EF, LV stroke volume, mitral deceleration time of early filling, and flow propagation velocity (Vp), and significant positive correlations with end-systolic and enddiastolic diameters and volumes, pulmonary artery pressure (PAP), and the E/Vp ratio. Mitral early (E) and late (A) diastolic peak velocities and the E/A ratio were not correlated. Concerning TDE parameters, the NYHA class was in significant inverse correlation with systolic (Sm), early (Em) and late (Am) diastolic myocardial velocities, and in positive correlation with the E/Em ratio, whereas no correlation was found with the Em/Am ratio. Linear regression analysis showed that Sm, EF, and PAP were independent variables of functional capacity (?=-0.33, p<0.005; ?=-0.26, p<0.05; ?=0.23, p<0.05, respectively). Conclusion: There is significant relationship between myocardial velocities and functional capacity, and Sm, in particular, has the strongest association compared to conventional echocardiographic and other TDE parameters.
Açıklama
Anahtar Kelimeler
Blood flow velocity, Doppler/methods, Echocardiography, Exercise tolerance, Heart failure/ultrasonography, Left, Ventricular function
Kaynak
Turk Kardiyoloji Dernegi Arsivi
WoS Q Değeri
Scopus Q Değeri
Q4
Cilt
36
Sayı
3
