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220 Possible Causes for Bradycardia, Wide QRS Complex

  • Procainamide

    No proarrhythmia, bradycardia, or significant hypotension was observed.[ncbi.nlm.nih.gov] QRS complex (probably ventricular) tachycardia.[ncbi.nlm.nih.gov] Patients with other risk factors (eg, older age, female sex, bradycardia, hypokalemia, hypomagnesemia, heart disease, and higher drug concentrations) are likely at greater[drugs.com]

  • Congenital Heart Block

    Persistent fetal bradycardia in early pregnancy is a rare finding and indicates towards congenital heart block.[ncbi.nlm.nih.gov] Mechanical ventricular dyssynchrony is not synonymous with a wide QRS EKG complex.[ecrjournal.com] No sinus bradycardia or AV block were manifested in pups from control nonimmunized WT mothers.[ncbi.nlm.nih.gov]

  • Physostigmine

    Bradycardia and salivation were not a problem. One child vomited once. Atropine was not necessary.[ncbi.nlm.nih.gov] Initial EKG showed very wide QRS complex (approximately 240 msec) and first degree AV block.[emdocs.net] None demonstrated response and, further, there were associated adverse events, including atrial fibrillation (2), pulmonary infiltrates (1) and significant bradycardia (1)[ncbi.nlm.nih.gov]

  • Hyperkalemia

    The significance of sever bradycardia can vary widely.[omicsonline.org] complex tachycardia.[ncbi.nlm.nih.gov] QRS complexes.[ncbi.nlm.nih.gov]

  • Third Degree Atrioventricular Block

    It can also cause bradycardia and even total atrioventricular block. Rarely, it causes coronary artery spasm and even myocardial infarction.[ncbi.nlm.nih.gov] ECG features of 3rd degree AV block On the ECG P-waves have no relation to the QRS complexes. The QRS complexes may be normal or wide.[ecgwaves.com] The unopposed parasympathetic tone in patients with dysautonomia may make them susceptible to bradycardia and atrioventricular block.[ncbi.nlm.nih.gov]

  • Quinidine

    This case provides the first evidence to suggest that a quinidine-induced long QTU interval and torsade de pointes may be related to bradycardia-dependent early afterdepolarizations[ncbi.nlm.nih.gov] Other ECG effects include a wide notched P wave, wide QRS complex, depressed ST segment, and U waves.[en.wikipedia.org] […] associated with quinidine was consistently greater than that associated with any of a variety of alternative antiarrhythmics Acute rheumatic fever, acute thyrotoxicosis, bradycardia[reference.medscape.com]

  • Verapamil

    […] disease, and the number and types of other medications, are further predictors of marked bradycardia with hypotension.[ncbi.nlm.nih.gov] We present a 6-month-old infant girl with a wide-complex tachycardia with right bundle branch block QRS morphology, a superior axis, and atrioventricular dissociation, consistent[ncbi.nlm.nih.gov] We report two cases of junctional bradycardia with slow release (SR) verapamil therapy in the presence of mild hyperkalaemia in patients with mild to moderate chronic renal[ncbi.nlm.nih.gov]

  • Bradyarrhythmia

    Management of bradycardia. The management of bradycardia depends upon the patient’s degree of symptoms.[cancertherapyadvisor.com] Figure 3 Sinus rhythm changes to a junctional rhythm with narrow QRS complex for one beat followed by the development of wide QRS complexes for the next three beats.[nature.com] Similar to first-degree AV block, wide QRS complexes may indicate that the level of the block is infra-nodal.[eplabdigest.com]

  • Nadolol

    Antimuscarinics, such as atropine: May antagonize nadolol-induced bradycardia. Use together cautiously.[glowm.com] The reduction in CV post-nadolol means that the bradycardia-induced effect is associated with an inadequate increase, or even a reduction in SDRR, whereas the absence of any[ncbi.nlm.nih.gov] Side effects were suspected in 3 of 28 (10.7%), including wheezing (n 1, 3.5%), irritability and diarrhea (n 1, 3.5%), and bradycardia (n 1, 3.5%).[ncbi.nlm.nih.gov]

  • Premature Ventricular Contraction

    LV dysfunction and concealed mechanical bradycardia resolved in a patient with idiopathic dilated cardiomyopathy after the focal source of PVCs in the LV was eliminated by[ncbi.nlm.nih.gov] […] is much slower, creating a wide QRS complex.[healio.com] Satish OS et al . (2005) Premature ventricular contraction-induced concealed mechanical bradycardia and dilated cardiomyopathy .[nature.com]

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