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33 Possible Causes for Bradycardia, Irregularly Irregular Heart Rhythm

  • Atrial Fibrillation

    From a cardiac perspective, crizotinib is associated with 2 main cardiac effects, QT interval prolongation and bradycardia.[ncbi.nlm.nih.gov] Atrial fibrillation, sometimes called "Afib", is the most prevalent type of heart arrhythmia (abnormal heart rhythm) and causes an irregular (and often rapid) heartbeat.[umcvc.org] BACKGROUND: Symptomatic sinus node dysfunction (SND) consists of a variety of manifestations, including tachycardia-bradycardia syndrome.[ncbi.nlm.nih.gov]

  • Atrial Arrhythmia

    Procedural complications were symptomatic bradycardia in 2 cases (1%). No thromboembolic complications or deaths occurred.[ncbi.nlm.nih.gov] Normally, the heart contracts and then relaxes in a regular rhythm, moving blood from the upper chambers (atria) into the ventricles.[atricure.com] We tested the feasibility of using minute ventilation sensing in a dual chamber rate adaptive pacemaker (DDDR) to shorten the PVARP during exercise in 13 patients with bradycardias[ncbi.nlm.nih.gov]

  • Verapamil

    […] disease, and the number and types of other medications, are further predictors of marked bradycardia with hypotension.[ncbi.nlm.nih.gov] Atrial Fibrillation (AFib) Symptoms, ECG, and Treatment Medications Atrial fibrillation (AF or AFib) is an abnormality in the heart rhythm which involves irregular and often[medicinenet.com] CASE SUMMARY AND WHAT IS NEW: We report two cases of junctional bradycardia with slow release (SR) verapamil therapy in the presence of mild hyperkalaemia in patients with[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] Atrial Fibrillation (AFib) Symptoms, ECG, and Treatment Medications Atrial fibrillation (AF or AFib) is an abnormality in the heart rhythm which involves irregular and often[medicinenet.com] […] 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]

  • Procainamide

    Confusion, seizures, hypotension, bradycardia, reflex tachycardia, ventricular dysrhythmias, AV blocks, asystole, widening of PR, QRS, and Q-T intervals, N/V.[quizlet.com] Atrial Fibrillation (AFib) Symptoms, ECG, and Treatment Medications Atrial fibrillation (AF or AFib) is an abnormality in the heart rhythm which involves irregular and often[medicinenet.com] Torsades de Pointes (associated with high levels of procainamide and/or NAPA; secondary to prolonged QT interval ) heart block prolongation of PR, QRS, QT intervals (up to 50%) bradycardia[lhsc.on.ca]

  • Wolff-Parkinson-White Syndrome

    Slow heart rates are called bradycardias. Fast heart rates are called tachycardias. The heart is made up of four chambers.[ucsfhealth.org] Infarctions involving the SA node may produce sinus dysrhythmias including tachycardias, bradycardias, and sinus arrest.[accessmedicine.com] Arrhythmias include many conditions such as bradycardias and tachycardias .[heart.org]

  • Torsades De Pointes

    Investigation into the cause of her bradycardia and prolonged QT revealed profound hypothyroidism.[ncbi.nlm.nih.gov] For perfusing rhythms, the heart rate is generally between 165 – 300 beats per minute. The R to R interval varies in an irregularly irregular pattern.[mstcparamedic.pbworks.com] KEYWORDS: Adenosine; Arrhythmias; PSVT; QT interval; Sinus bradycardia[ncbi.nlm.nih.gov]

  • Syncope

    We report a case of swallow syncope with invasive confirmation of esophageal hypertension (spasm) and invasive confirmation of a bradycardia mechanism.[ncbi.nlm.nih.gov] Irregular or rapid heart rhythms can also trigger syncope.[stanfordchildrens.org] In these patients, the cardiovascular consequences may include bradycardia, hypotension and cardiac arrest.[ncbi.nlm.nih.gov]

  • Conduction Disorder of the Heart

    Sinus Bradycardia Sinus bradycardia is a sinus rhythm with a rate of 40-60 bpm Atrial fibrillation/flutter Irritable sites in the atria fire very rapidly, between 400-600[smartypance.com] Atrial fibrillation (AF or A-fib) — is the most common, abnormal rhythm of the heart in which electrical discharges are irregular and rapid; as a result, the heart beats irregularly[froedtert.com] Bradycardia is usually related to fetal distress; supraventricular tachycardia, atrial flutter, and atrial fibrillation may be associated with severe congestive heart failure[ncbi.nlm.nih.gov]

  • Micturition Syncope

    The vagus nerve stimulus causes slowing down of the heart (bradycardia) and a drop in blood pressure.[en.wikipedia.org] His cardiac rhythm was irregularly irregular, with slight variation in the intensity of the first heart sound with a physiologically split second heart sound.[circ.ahajournals.org] These episodes were observed in the minutes following the catheterisations performed in the sitting position, associating hypotension and bradycardia.[ncbi.nlm.nih.gov]

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