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Qaagi - Book of Why

Causes

Effects

ischemia and infarctionmay causebundle branch blocks

dysfunctional bundle branches , which results in slow ( and abnormal ) activation of ventricular myocardium and thus prolonged QRS duration(passive) are caused bybundle branch blocks

a number of issues including a heart attack , heart disease , or cardiac surgery(passive) can be caused byBundle branch blocks

Again , the distal conduction system has nothing to do with complete heart blockcan causebundle branch blocks

a variety of conditions(passive) can be caused byBundle branch blocks

Certaiin common blood pressure medications and/or antiarrhythmics in very high ( not therapeutic ) dosescan causebundle branch blocks

left ventricular ( LV(passive) may notably be caused bybundle - branch block morphology

mad - honey poisoning(passive) caused bybundle branch block

right ventricular ( RV ) pacing(passive) caused bybundle branch block ( LBBB

Even short interference that lasts for only a fraction of a secondcan causebundle branch block

Purkinje fiber failurewould causebundle branch block

from the right ventricle ofaffected dogs7 and are inherited in an autosomal dominant fashion.8originatefrom the right ventricle ofaffected dogs7 and are inherited in an autosomal dominant fashion.8

a substantial drop in the amplitude of the QRS complexesmay ... causea substantial drop in the amplitude of the QRS complexes

the simultaneous depolarization of the two ventriclesthus preventingthe simultaneous depolarization of the two ventricles

a heterogeneous work distribution in the left ventricle ( LVcausesa heterogeneous work distribution in the left ventricle ( LV

considerable regional differences in mechanical load within the left ventricle ( LVcreatesconsiderable regional differences in mechanical load within the left ventricle ( LV

slow LV conduction , chronotropic incompetencecausesslow LV conduction , chronotropic incompetence

in hypotension and syncoperesultingin hypotension and syncope

right bundle branch block infection , neoplasia , infarction , fibrosis , or cardiac traumacan causeright bundle branch block infection , neoplasia , infarction , fibrosis , or cardiac trauma

the blood pressure to go downmay causethe blood pressure to go down

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