Relationship of fragmented QRS complexes with inadequate coronary collaterals in patients with chronic total occlusion

ERDOĞAN T., KOCAMAN S. A., Cetin M., CANGA A., DURAKOĞLUGİL M. E., ÇİÇEK Y., ...More

JOURNAL OF CARDIOVASCULAR MEDICINE, vol.13, no.8, pp.499-504, 2012 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 13 Issue: 8
  • Publication Date: 2012
  • Doi Number: 10.2459/jcm.0b013e328353683c
  • Journal Name: JOURNAL OF CARDIOVASCULAR MEDICINE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.499-504
  • Keywords: chronic total occlusion, collateral, coronary artery disease, fragmented QRS, STABLE ANGINA-PECTORIS, BUNDLE-BRANCH BLOCK, MYOCARDIAL-INFARCTION, ARTERY-DISEASE, DILATED CARDIOMYOPATHY, ANATOMIC BASIS, CHEST-PAIN, Q-WAVE, RISK, ABNORMALITIES
  • Recep Tayyip Erdoğan University Affiliated: Yes

Abstract

Background Fragmented QRS (fQRS) complexes are defined as various RSR' patterns (>= 1 R' or notching of S wave or R wave) in two contiguous leads corresponding to a major coronary artery territory. In previous studies, fQRS has been associated with increased morbidity and mortality, sudden cardiac death and recurrent cardiovascular events (CVEs). The causative relationship between fQRS and cardiac fibrosis has been shown in prior studies. The association between inadequate (poor) coronary collaterals and presence of fQRS has not comprehensively been studied in patients with chronic total occlusion (CTO) until now. We tested the hypothesis that the presence of fQRS is associated with inadequate coronary collateral growth.