Evaluation of left atrial mechanical functions and atrial conduction abnormalities in patients with clinical hypothyroid
Yükleniyor...
Dosyalar
Tarih
2012
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Via Medica
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Background: The aim of this study was to investigate left atrial (LA) mechanical functions, atrial electromechanical delay and P wave dispersion in hypothyroid patients. Methods: Thirty-four patients with overt hypothyroid and thirty controls were included. A diagnosis of overt hypothyroid was reached with increased serum TSH and decreased free T4 (fT4) levels. LA volumes were measured using the biplane area length method and LA active and passive emptying volumes and fraction were calculated. Intra- and interatrial electromechanical delay (EMD) were measured by tissue Doppler imaging (TDI). P wave dispersion was calculated by 12 lead electrocardiograms. Results: LA diameter were significantly higher in patients with overt hypothyroid (p = 0.021). LA passive emptying volume and LA passive emptying fraction were significantly decreased with hypothyroid patients (p = 0.002 and p < 0.001). LA active emptying volume and LA active emptying fraction were significantly increased with hypothyroid patients (p < 0.001 and p < 0.001). Infra- and interatrial EMD, were measured significantly higher in hypothyroid patients (30.6 +/- 6.1 vs 18.0 +/- 2.7, p < 0.001; and 10.6 +/- 3.4 vs 6.9 +/- 1.4, p < 0.001, respectively). P wave dispersion were significantly higher in hypothyroid patients (48.8 +/- 6.2 vs 44.3 +/- 7.2, p = 0.022). In stepwise regression analysis demonstrated that, interatrial EMD and LA active emptying fraction related with TSH and fT4. Conclusions: This study showed that impaired LA mechanical and electromechanical function in hypothyroid patients. TSH and T4 were independent determinant of interatrial EMD and LA active emptying fraction. (Cardiol J 2012; 19, 3: 287-294)
Açıklama
Alcelik, Aytekin/0000-0002-3156-1076
WOS: 000307428200010
PubMed: 22641548
WOS: 000307428200010
PubMed: 22641548
Anahtar Kelimeler
atrial functions, interatrial delay, thyroid hormones
Kaynak
Cardiology Journal
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
19
Sayı
3
