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Narrowing filtered QRS duration on signal-averaged electrocardiogram predicts outcomes in cardiac resynchronization therapy patients with nonischemic heart failure
- Source :
- Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc. 23(3)
- Publication Year :
- 2017
-
Abstract
- BACKGROUND: To evaluate the impact of changes in the filtered QRS duration (fQRS) on signal‐averaged electrocardiograms (SAECGs) from pre‐ to postimplantation on the clinical outcomes in nonischemic heart failure (HF) patients under cardiac resynchronization therapy (CRT). METHODS: We studied 103 patients with nonischemic HF and sinus rhythm who underwent CRT implantation. SAECGs were obtained within 1 week before and 1 week after implantation and narrowing fQRS was defined as a decrease in fQRS from pre‐ to postimplantation. Echocardiography was performed before and 6 months after CRT implantation. The primary outcome was death from any cause. The secondary outcomes were hospitalization due to worsened HF and occurrence of ventricular tachyarrhythmias. RESULTS: Of the 103 CRT patients, 53 (51%) showed narrowing fQRS. Left ventricular end‐diastolic volume and end‐systolic volume were significantly reduced (both p
- Subjects :
- Male
medicine.medical_specialty
Time Factors
medicine.medical_treatment
Cardiac resynchronization therapy
030204 cardiovascular system & hematology
Cardiac Resynchronization Therapy
03 medical and health sciences
QRS complex
Electrocardiography
0302 clinical medicine
Physiology (medical)
Internal medicine
medicine
Risk of mortality
Humans
Sinus rhythm
030212 general & internal medicine
cardiovascular diseases
Retrospective Studies
Heart Failure
Ejection fraction
business.industry
Confounding
General Medicine
Original Articles
Middle Aged
medicine.disease
Signal-averaged electrocardiogram
Treatment Outcome
Heart failure
Cardiology
cardiovascular system
Female
Cardiology and Cardiovascular Medicine
business
Follow-Up Studies
Subjects
Details
- ISSN :
- 1542474X
- Volume :
- 23
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc
- Accession number :
- edsair.doi.dedup.....e742ea1cb2f852f1f3263dc35da19ab0