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324 Possible Causes for Prolonged PR Interval

  • Streptococcal Infection

    The minor criteria include arthralgia, fever, elevated erythrocyte sedimentation rate, elevated C-reactive protein, or a prolonged PR interval [ 1 ].[casesjournal.biomedcentral.com]

  • Dementia

    Clin Interv Aging . 2014;9:947–961. 10. Gehrman PR, Connor DJ, Martin JL, Schochat T, Corey-Bloom J, Ancoli-Israel S.[dovepress.com] Add-on prolonged-release melatonin for cognitive function and sleep in mild to moderate Alzheimer’s disease: a 6-month, randomized, placebo-controlled, multicenter trial.[dovepress.com]

  • First-Degree Atrioventricular Block

    Data is sparse on an extremely prolonged PR interval associated with Atrioventricular Dissociation and Pseudo-Pacemaker Syndrome.[ncbi.nlm.nih.gov] Context Prolongation of the electrocardiographic PR interval, known as first-degree atrioventricular block when the PR interval exceeds 200 milliseconds, is frequently encountered[dx.doi.org] Standard 12-lead electrocardiogram showed an uncommon Marked First Degree Atrioventricular Block with an extremely prolonged PR interval of 0.56 s.[ncbi.nlm.nih.gov]

  • AV Block Mobitz I

    The hallmark of Mobitz type 1 block is the gradual prolongation of PR intervals before a block occurs. Mobitz type 2 block has constant PR intervals before blocks occur.[ecgwaves.com] The conducted basic PR interval is usually normal in ttype 2 AV block. In wenkebach the PR interval is usually prolonged.(Not always though![drsvenkatesan.com] interval becomes prolonged.[ecgwaves.com]

  • AV Block Mobitz II

    Commonly used terminology includes: First degree AV block – Delayed conduction from the atrium to the ventricle (defined as a prolonged PR interval of 200 milliseconds) without[uptodate.com] Every-other-P wave conducts – as determined by the presence of a fixed ( albeit prolonged ) PR interval preceding each QRS complex on the tracing.[ecg-interpretation.blogspot.com] In this variant of second degree heart block the PR interval is constant with occasional dropped beats as compared to the gradually prolonging PR interval in Mobitz type I[wikidoc.org]

  • Rheumatic Fever

    We report on a 10-year-old boy who presented with progressive right side involuntary movements, an apical systolic murmur, prolonged PR interval, and elevated antistreptolysin[ncbi.nlm.nih.gov] Initial attack patients have higher incidence of prolonged PR-interval (67 vs. 12%, P 0.049) and longer duration of admission to diagnosis (5 vs. 2 days, P 0.05).[ncbi.nlm.nih.gov] PR interval on an electrocardiogram Laboratory Criteria for Diagnosis No specific laboratory test exists for the diagnosis of rheumatic fever Case Classification Confirmed[wwwn.cdc.gov]

  • Second Degree Atrioventricular Block

    This case demonstrates the need for caution and interval cardiac testing when adding LCM to other AEDs known to prolong the PR interval.[ncbi.nlm.nih.gov] On the surface ECG this is realized through a prolonged PR interval.[ems12lead.com] This is seen as progressive PR interval prolongation with each beat until a P wave is not conducted. There is an irregular R-R interval.[healio.com]

  • Hyperkalemia

    ., prolonged PR interval, wide QRS complex) as an alternative to 10 units of short acting insulin.[ncbi.nlm.nih.gov] , prolonged PR interval, prolonged QRS interval, loss of P wave, sine waves and finally ventricular fibrillation (see ECG guideline for normal values for age) ECG CHANGES[starship.org.nz] Notes The classic ECG progression in hyperkalemia is: Peaked T waves Prolonged PR interval and flattening of the P wave Widening of the QRS Sine wave However. you cannot rely[first10em.com]

  • Sinoatrial Block

    This is different than a first-degree atrioventricular, or AV, block, which shows a prolonged PR interval.[healio.com] Mobitz Type 1 (Wenckebach) • Gradual prolongation of PR interval until nonconducted p wave • RP-PR reciprocity • Lengthening of the PR interval at progressively shorter decrements[slideshare.net]

  • Moricizine

    Digoxin: Prolongs PR interval. Monitor patient carefully. Propranolol: May produce a small additive increase in PR interval. Monitor patient carefully.[glowm.com] Baseline age-related differences were found, including prolonged electrocardiographic intervals (PR and QRS) (P .05), increased ventricular arrhythmias (P .05), and reduction[ncbi.nlm.nih.gov] Excessive prolongation of the PR interval has been seen in some patients receiving both digoxin and moricizine, probably due to additive electrophysiologic effects of the[ncbi.nlm.nih.gov]

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