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393 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]

  • 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] Electrocardiography (ECG): There may be prolonged PR interval, heart block or features of pericarditis and myocarditis.[symptoma.com]

  • Rheumatic Heart Disease

    ECG reveals no diagnostic changes, but 20% of patient show a prolonged PR interval. 15.[slideshare.net] PR interval[ 8 ] [ 9 ] (Cannot be included if carditis is present as a major symptom) Previous episode of rheumatic fever or inactive heart disease Other signs and symptoms[textbookofcardiology.org] Some patients may show first degree atrioventricular block indicated by the prolongation of PR interval in ECG.[symptoma.com]

  • Corynebacterium Diphtheriae

    A prolonged PR interval with changes in the ST-T waves were noted on her electrocardiogram.[ijmm.org]

  • 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] Discussion Marked First Degree AV Block with extremely prolonged PR interval 0.50 s is rare.[bmcresnotes.biomedcentral.com] Prolongation of the electrocardiographic PR interval, known as first-degree atrioventricular block when the PR interval exceeds 200 milliseconds, is frequently encountered[ncbi.nlm.nih.gov]

  • Electrolyte Imbalance

    Hypermagnesemia- Prolonged PR interval - widened QRS complexes thought this might help...i dont know of any shortcuts though...[allnurses.com] .  Assessment findings: serum magnesium level is greater than 2.3mg/dl creatinine clearance decreases to less than 3.0ml/min ECG finding: prolonged PR interval : tall T waves[slideshare.net] Prolonged QT interval D. Shortened ST segment 68. A. Prominent U waves B. Prolonged PR interval C. Depressed ST segment D. Widened QRS complexes 69. A. Alcoholism B.[proprofs.com]

  • Cardiac Amyloidosis

    Electrocardiogram depicted low voltage in limb leads and a prolonged PR interval.[ncbi.nlm.nih.gov]

  • Lyme Carditis

    He was noted to possibly have subtle Brugada pattern on EKG with prolonged PR interval of 252ms. A procainamide challenge was equivocal.[onlinejacc.org] A repeat ECG showed a first-degree AV block with a markedly prolonged PR interval of greater than 400 ms.[journals.lww.com] Those with a markedly prolonged PR interval ( 300 ms) seem to be at the greatest risk for progression to complete heart block.[journals.lww.com]

  • Restrictive Cardiomyopathy

    Note the low voltage in the precordial leads and a prolonged PR interval at 20 ms.[academic.oup.com] […] it will have low voltage in the precordial leads with prolonged PR interval ( Figure 6 ).[academic.oup.com] The differential diagnosis here lies on the ECG, which in hypertrophic cardiomyopathy (HCM) patients will show high voltage with normal PR interval, whereas in amyloid hearts[academic.oup.com]

  • Moricizine

    Digoxin: Prolongs PR interval. Monitor patient carefully. Propranolol: May produce a small additive increase in PR interval. Monitor patient carefully.[glowm.com] 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] 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]

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