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86 Possible Causes for Depressed PR Interval

  • Myocardial Infarction

    In cross-sectional studies in the general population, 15 to 40% of patients with ECG evidence of past myocardial infarction (MI) do not give a history of typical cardiac symptoms [ 1, 2, 3 ]. Mortality rates in patients with such “silent” MIs have been reported as higher than, similar to, or lower than those in[…][doi.org]

  • Acute Atrial Infarction

    There was also 0.5 mm PR-segment elevation in inferior leads, but no reciprocal PR-segment depression in leads I or a VR could be seen.[eplabdigest.com] The second to fifth beats were sinus rhythm (SR) with constant P-P interval, followed by an abrupt sinoatrial exit block (SAEB) with atrial escape rhythm in the subsequent[eplabdigest.com]

  • Pericarditis

    There may also be PR interval depression – and if both of these are present it is pretty much diagnostic for pericarditis Later there may also be T wave inversion – especially[almostadoctor.co.uk] The PR interval (short arrow) is depressed because of inflammatory changes involving the atrial wall. B. Acute myocardial infarction.[aafp.org] The electrocardiographic abnormalities 22,23 have 4 stages: 24 1st-PR interval depression and diffuse concave upward ST elevation of ST segment except aVR; 2 nd normalization[scielo.org.mx]

  • Musculoskeletal Lower Back Pain

    From the multivariate analysis, self-reported LBP was associated with teachers who reported severe to extremely severe depression (PR: 1.71, 95% CI 1.25, 2.32), severe to[journals.plos.org] Results The prevalence of self-reported LBP and NSP among 1482 teachers in the past 12 months was 48.0% (95% Confidence Interval (CI) 45.2%, 50.9%) and 60.1% (95% CI 57.4%[journals.plos.org]

  • Obesity

    ECG Changes That May Occur in Obese Individuals Heart rate PR interval QRS interval or QRS voltage QT c interval QT dispersion SAECG (late potentials) ST-T abnormalities ST[doi.org] depression Left axis deviation Flattening of the T wave (inferolateral leads) Left atrial abnormalities False positive criteria for inferior myocardial infarction Echocardiography[doi.org]

  • Hyperkalemia

    P wave flattening, may disappear increased amplitude and width PR interval prolonged prolonged QRS interval prolonged ST segment slight depression T wave increased amplitude[rccc.eu] ST-segment depression At a serum potassium level of 6.5-8.0 mEq/L, the ECG typically shows the following: Peaked T waves Prolonged PR interval Decreased or disappearing P[emedicine.medscape.com] […] typically seen at a serum potassium level of 5.5-6.5 mEq/L, include the following: Tall, peaked T waves with a narrow base, best seen in precordial leads [3] Shortened QT interval[emedicine.medscape.com]

  • Posterior Myocardial Infarction

    […] segment depression.[ahcmedia.com] However, a variety of other ECG changes also can occur, including T wave inversions, ST segment depression, prolonged QT interval, bundle branch blocks, and even Q-waves.[ahcmedia.com] […] thrombolytics has been documented in large series to occur in about 1% of cases. 47 The well-known ECG changes seen in pericarditis are those of diffuse ST segment elevation and PR[ahcmedia.com]

  • Electrolyte Imbalance

    ST segment depression develops and may, along with T-wave inversions, simulate ischaemia. P-wave amplitude, P-wave duration and PR interval may all increase.[ecgwaves.com] 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] […] than 2.3mg/dl creatinine clearance decreases to less than 3.0ml/min ECG finding: prolonged PR interval : tall T waves : widened QRS 85.  Administration of magnesium  Ventilatory[slideshare.net]

  • Acute Renal Failure with Oliguria

    interval, decreased P and R waves, ST segment depression, prolonged QT interval If K 7 mmol/l with ECG changes: Salbutomol 10% calcium gluconate 0.5 ml/kg, IV over 3-5 min[rch.org.au] […] or dialysis with patient in established renal failure Salbutamol (inhaled, may be given to induce K temporary shits (ECT fo ICF) ECG: peaked T waves, wide QRS, increased PR[rch.org.au]

  • Bradycardia

    If the patient's digoxin level becomes toxic, he'll develop severe bradycardia and his PR interval will prolong—a combination that could lead to advanced heart block.[journals.lww.com] It depresses the SA node and slows conduction through the AV node.[journals.lww.com]

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