Jakob Almer1, Robbert Zusterzeel2, David G Strauss2, Elin Trägårdh1, Charles Maynard3, Galen S Wagner4, Henrik Engblom5. 1. Department of Clinical Physiology and Nuclear Medicine, Skåne University Hospital and Lund University, Lund, Sweden. 2. Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, MD, USA. 3. Department of Health Services, University of Washington, Seattle, WA, USA. 4. Duke Clinical Research Institute, Durham, NC, USA. 5. Department of Clinical Physiology and Nuclear Medicine, Skåne University Hospital and Lund University, Lund, Sweden. Electronic address: henrik.engblom@med.lu.se.
Abstract
INTRODUCTION: About one-third of patients undergoing cardiac resynchronization therapy because of left bundle branch block (LBBB) and heart failure do not improve. Strauss et al. have developed strict criteria to more accurately define complete LBBB in this patient group. The aim of this study was to investigate the prevalence of the manual application of the Strauss criteria for LBBB (QRS ≥ 140 ms in men, ≥ 130 ms in women, along with mid-QRS notching/slurring) in consecutive patients who have been diagnosed with LBBB by the automated Glasgow criteria (QRS ≥ 120 ms). METHOD: In 158 consecutive patients (78 females) diagnosed with LBBB according to the automated Glasgow criteria, the manual Strauss criteria were applied. RESULTS & CONCLUSION: A majority of patients (87%) diagnosed with LBBB using the Glasgow criteria were positive for the Strauss criteria. In 70% (13/20) of the cases of disagreement the reason for disagreement was short QRS duration.
INTRODUCTION: About one-third of patients undergoing cardiac resynchronization therapy because of left bundle branch block (LBBB) and heart failure do not improve. Strauss et al. have developed strict criteria to more accurately define complete LBBB in this patient group. The aim of this study was to investigate the prevalence of the manual application of the Strauss criteria for LBBB (QRS ≥ 140 ms in men, ≥ 130 ms in women, along with mid-QRS notching/slurring) in consecutive patients who have been diagnosed with LBBB by the automated Glasgow criteria (QRS ≥ 120 ms). METHOD: In 158 consecutive patients (78 females) diagnosed with LBBB according to the automated Glasgow criteria, the manual Strauss criteria were applied. RESULTS & CONCLUSION: A majority of patients (87%) diagnosed with LBBB using the Glasgow criteria were positive for the Strauss criteria. In 70% (13/20) of the cases of disagreement the reason for disagreement was short QRS duration.
Authors: Jani Rankinen; Petri Haataja; Leo-Pekka Lyytikäinen; Heini Huhtala; Terho Lehtimäki; Mika Kähönen; Markku Eskola; Andrés Ricardo Pérez-Riera; Antti Jula; Harri Rissanen; Kjell Nikus; Jussi Hernesniemi Journal: Ann Noninvasive Electrocardiol Date: 2020-08-17 Impact factor: 1.468