Expanding benefits from cardiac resynchronization therapy to exercise‐induced left bundle branch block in advanced heart failure
Indications of cardiac resynchronization therapy (CRT) do not include exercise‐induced left bundle branch block, but functional impairment could be improved with CRT in such cases. A 57‐year‐old woman with idiopathic dilated cardiomyopathy (ejection fraction 23%) presented with New York Heart Associ...
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Veröffentlicht in: | ESC Heart Failure 2020-02, Vol.7 (1), p.329-333 |
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description | Indications of cardiac resynchronization therapy (CRT) do not include exercise‐induced left bundle branch block, but functional impairment could be improved with CRT in such cases. A 57‐year‐old woman with idiopathic dilated cardiomyopathy (ejection fraction 23%) presented with New York Heart Association Class IV and recurrent hospitalizations. During heart transplant evaluation, a new onset of intermittent left bundle branch block was observed on the cardiopulmonary exercise test. CRT was implanted, and 97% resynchronization rate was achieved. In 12 month follow‐up, both clinical and prognostic exercise parameters improved. In patients with heart failure with reduced ejection fraction and no left bundle branch block at rest, exercise test can uncover electromechanical dyssynchrony that may benefit from CRT. |
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A 57‐year‐old woman with idiopathic dilated cardiomyopathy (ejection fraction 23%) presented with New York Heart Association Class IV and recurrent hospitalizations. During heart transplant evaluation, a new onset of intermittent left bundle branch block was observed on the cardiopulmonary exercise test. CRT was implanted, and 97% resynchronization rate was achieved. In 12 month follow‐up, both clinical and prognostic exercise parameters improved. In patients with heart failure with reduced ejection fraction and no left bundle branch block at rest, exercise test can uncover electromechanical dyssynchrony that may benefit from CRT.</description><identifier>ISSN: 2055-5822</identifier><identifier>EISSN: 2055-5822</identifier><identifier>DOI: 10.1002/ehf2.12580</identifier><identifier>PMID: 31923352</identifier><language>eng</language><publisher>England: John Wiley & Sons, Inc</publisher><subject>Beta blockers ; Bundle-Branch Block - etiology ; Bundle-Branch Block - physiopathology ; Bundle-Branch Block - therapy ; Cardiac resynchronization therapy ; Cardiac Resynchronization Therapy - methods ; Cardiomyopathy ; Cardiovascular disease ; Case Report ; Coronary vessels ; Echocardiography ; Ejection fraction ; Electrocardiography ; Exercise‐induced left bundle branch block ; Female ; Follow-Up Studies ; Heart failure ; Heart Failure - complications ; Heart Failure - physiopathology ; Heart Failure - therapy ; Heart rate ; Heart Rate - physiology ; Humans ; Maximum oxygen consumption ; Middle Aged ; Patients ; Time Factors ; Transplants & implants ; Ultrasonic imaging ; Ventilation ; Ventricular Function, Left - physiology</subject><ispartof>ESC Heart Failure, 2020-02, Vol.7 (1), p.329-333</ispartof><rights>2020 The Authors. ESC Heart Failure published by John Wiley & Sons Ltd on behalf of the European Society of Cardiology.</rights><rights>2020. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). 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A 57‐year‐old woman with idiopathic dilated cardiomyopathy (ejection fraction 23%) presented with New York Heart Association Class IV and recurrent hospitalizations. During heart transplant evaluation, a new onset of intermittent left bundle branch block was observed on the cardiopulmonary exercise test. CRT was implanted, and 97% resynchronization rate was achieved. In 12 month follow‐up, both clinical and prognostic exercise parameters improved. 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A 57‐year‐old woman with idiopathic dilated cardiomyopathy (ejection fraction 23%) presented with New York Heart Association Class IV and recurrent hospitalizations. During heart transplant evaluation, a new onset of intermittent left bundle branch block was observed on the cardiopulmonary exercise test. CRT was implanted, and 97% resynchronization rate was achieved. In 12 month follow‐up, both clinical and prognostic exercise parameters improved. In patients with heart failure with reduced ejection fraction and no left bundle branch block at rest, exercise test can uncover electromechanical dyssynchrony that may benefit from CRT.</abstract><cop>England</cop><pub>John Wiley & Sons, Inc</pub><pmid>31923352</pmid><doi>10.1002/ehf2.12580</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Beta blockers Bundle-Branch Block - etiology Bundle-Branch Block - physiopathology Bundle-Branch Block - therapy Cardiac resynchronization therapy Cardiac Resynchronization Therapy - methods Cardiomyopathy Cardiovascular disease Case Report Coronary vessels Echocardiography Ejection fraction Electrocardiography Exercise‐induced left bundle branch block Female Follow-Up Studies Heart failure Heart Failure - complications Heart Failure - physiopathology Heart Failure - therapy Heart rate Heart Rate - physiology Humans Maximum oxygen consumption Middle Aged Patients Time Factors Transplants & implants Ultrasonic imaging Ventilation Ventricular Function, Left - physiology |
title | Expanding benefits from cardiac resynchronization therapy to exercise‐induced left bundle branch block in advanced heart failure |
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