Bundle-Branch Block Under Voluntary Control

Bauer, G. E.

doi:10.1136/hrt.26.2.167

Cited by 37 publications

(5 citation statements)

References 28 publications

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“…A case series published in 1964 reported five cases out of 167 patients with bundle branch block which was intermittent and could be induced with simple maneuvers. Four out of those five patients had underlying ischemic heart disease [9].…”

Section: Discussionmentioning

confidence: 99%

A Curious Case of Intermittent Left Bundle Branch Block Associated with Cough

Shahab

Faheem

Khandwala

et al. 2018

Cureus

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A handful of cases of voluntary control of left bundle branch block (LBBB) have been described in the literature. We report the case of a middle-aged man who was found to have LBBB on baseline electrocardiogram (ECG) which disappeared on coughing and then reappeared with the same maneuver. Subsequent myocardial perfusion scan showed reduced count in the anteroseptal region likely attributed to LBBB. It is possible that the intermittent conduction changes may be due to the alteration in the vagal tone associated with cough as reflected in the change in the PR interval on the ECG.

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Section: Discussionmentioning

confidence: 99%

A Curious Case of Intermittent Left Bundle Branch Block Associated with Cough

Shahab

Faheem

Khandwala

et al. 2018

Cureus

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“…Although variants of transient or intermittent LBBB are commonly seen in cases of reversible ischemia, 1 tachycardia, 2 or electrolyte abnormalities, 3 reproducible volitional control of intermittent LBBB via other routes is rare. The largest case series regarding volitional control of LBBB was published in 1964, 4 in which Bauer reported a series of 5 patients, 4 of whom had ischemic heart disease. In his report, inciting or suppressing maneuvers associated with LBBB included carotid sinus massage, rapid or deep breathing, the Valsalva maneuver, physical exertion with increased heart rate, carotid sinus pressure, and direct ocular pressure.…”

Section: Discussionmentioning

confidence: 99%

Laughter‐Induced Left Bundle Branch Block

Chow

Desai

Spragg

et al. 2012

Cardiovasc electrophysiol

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We present the case of a patient with ischemic heart disease and intermittent left bundle branch block, reproducibly induced by laughter. Following treatment of ischemia with successful deployment of a drug-eluting stent, no further episodes of inducible LBBB were seen. Transient ischemia, exacerbated by elevated intrathoracic pressure during laughter, may have contributed to onset of this phenomenon.

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“…Secondary causes of sinus tachycardia and LBBB were ruled out by a normal CBC, CMP, and thyroid panel. The presumed cause of this patient's IVCD was "rate-related LBBB," a LBBB associated with an elevation of the HR [3], [5], [6].…”

Section: Casementioning

confidence: 94%