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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 ].[]

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

  • Rheumatic Heart Disease

    ECG reveals no diagnostic changes, but 20% of patient show a prolonged PR interval. 15.[] 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[] Some patients may show first degree atrioventricular block indicated by the prolongation of PR interval in ECG.[]

  • Corynebacterium Diphtheriae

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

  • First-Degree Atrioventricular Block

    Data is sparse on an extremely prolonged PR interval associated with Atrioventricular Dissociation and Pseudo-Pacemaker Syndrome.[] Discussion Marked First Degree AV Block with extremely prolonged PR interval 0.50 s is rare.[] Prolongation of the electrocardiographic PR interval, known as first-degree atrioventricular block when the PR interval exceeds 200 milliseconds, is frequently encountered[]

  • Electrolyte Imbalance

    Hypermagnesemia- Prolonged PR interval - widened QRS complexes thought this might help...i dont know of any shortcuts though...[] .  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[] 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.[]

  • Cardiac Amyloidosis

    Electrocardiogram depicted low voltage in limb leads and a prolonged PR interval.[]

  • Lyme Carditis

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

  • Restrictive Cardiomyopathy

    Note the low voltage in the precordial leads and a prolonged PR interval at 20 ms.[] […] it will have low voltage in the precordial leads with prolonged PR interval ( Figure 6 ).[] 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[]

  • Moricizine

    Digoxin: Prolongs PR interval. Monitor patient carefully. Propranolol: May produce a small additive increase in PR interval. Monitor patient carefully.[] 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[] Baseline age-related differences were found, including prolonged electrocardiographic intervals (PR and QRS) (P .05), increased ventricular arrhythmias (P .05), and reduction[]

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