Prognostic significance of the absence of normal septal Q waves before aortic valve replacement
Journal of Electrocardiology, cilt.46, sa.4, ss.368-374, 2013 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 46 Sayı: 4
- Basım Tarihi: 2013
- Doi Numarası: 10.1016/j.jelectrocard.2013.02.003
- Dergi Adı: Journal of Electrocardiology
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.368-374
- Anahtar Kelimeler: Septal Q waves, Aortic valve, Conduction disturbances
- Sağlık Bilimleri Üniversitesi Adresli: Evet
Özet
Purpose Aim of this study was to investigate the prognostic significance of absence of septal Q waves in patients scheduled for aortic valve replacement. Material and Methods Sixty-one patients who underwent isolated aortic valve replacement for aortic stenosis were retrospectively evaluated. Septal Q waves were defined as Q waves of < 2 mm in amplitude and < 40 ms in width and absence of septal Q waves was defined as simultaneous loss of Q waves from at least three of the leads I, aVL, V5 and V6. Septal Q waves were absent in 17 patients (Group AQ, 27.8%) and were present in 44 patients (Group PQ, 72.1 %) preoperatively. Newly developed AV block > 1st degree and newly developed left bundle branch block were primary endpoints. Results Preoperatively, absence of normal septal Q waves was significantly associated with increased risk of postoperative AV block (HR: 11.18, range 1.37-91.21, 95% CI, p = 0.02) whereas it was not associated with increased risk for newly developed LBBB (HR: 3.15 0.62-15.83, 95% CI, p = 0.16). Conclusion Absence of normal septal Q waves in the preoperative ECG may predict further delay in conduction which might develop in the early postoperative course of aortic valve replacement. © 2013 Elsevier Inc.