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90 Possible Causes for Flattened T Wave, Prolonged PR Interval

  • Hypokalemia

    […] than the T wave. flattening of the T wave.[healio.com] PR interval.[ausmed.com] T wave of the electrocardiogram, and muscle weakness.[medical-dictionary.thefreedictionary.com]

  • Digitalis Toxicity

    Electrocardiographic signs of digitalis toxicity include first-degree atrioventricular (A-V) block with depressed S-T segments, shortened Q-T intervals, and flattened T waves[medical-dictionary.thefreedictionary.com] The earliest signs of toxicity in the newborn are undue slowing of the pulse rate (bradycardia), sinoatrial arrest and prolongation of the PR Interval (A Collins Abrams, 2006[rn.com]

  • Electrolyte Imbalance

    Clinical signs of hyperkalaemia include muscle weakness, hypotension , bradycardia and loss of cardiac output, and ECG changes may include peaked T waves and flattened P waves[ausmed.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]

  • Quinidine

    T waves (without dysrhythmia), have occurred frequently and hypotension and ventricular tachycardia have occurred occasionally in patients receiving IV quinidine gluconate[drugs.com] QRS complexes and QT and PR intervals may be prolonged, and ataxia, anuria, respiratory distress, irritability, and hallucinations may develop.[glowm.com] Página 153 - Significance of isolated HV interval prolongation in symptomatic patients without documented heart block - Altschuler H., Fisher JD and Furman S. ‎[books.google.es]

  • Lithium Toxicity

    Cardiovascular side effects are usually mild and manifest as nonspecific ECG changes, such as ST-T flattening and T-wave inversion.[calpoison.org] The most common electrocardiographic finding is T-wave flattening.[emedicine.medscape.com]

  • Digitalis

    Abstract A 19-year-old female was admitted to our department because of a hypertrophic palmaris digitalis II of the left hand displaying color changes. A thrill was easily palpated over the medial part of the finger. A review of her history revealed that this hypertrophy occurred after a blunt trauma to the left[…][ncbi.nlm.nih.gov]

  • 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] ., 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]

  • Accidental Hypothermia

    In hypercalcemia, the ECG shows a shortened QT interval, flattened T waves and QRS widening at very high levels. 4. Atrial fibrillation.[foamcast.org] As temperatures continue to drop, the ECG will demonstrate prolonged intervals: PR, followed by QRS and then QTc.[foamcast.org] Multiple other findings eventually develop including a shortened QT interval, ST depression, bundle branch blocks, widened QRS, prolonged PR interval, flattened T wave and[foamcast.org]

  • First-Degree Atrioventricular Block

    There are tall, sharply-peaked T waves in many leads. The P waves have not yet widened and lost amplitude, but they will soon flatten out and disappear.[ecgguru.com] 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]

  • Hypokalemic Periodic Paralysis

    Some electrocardiographic (ECG) findings associated with hypokalemia include flattened or inverted T waves, a U wave and ST depression.[flipper.diff.org] QT-U intervals attributable to hypokalemia, and a paradoxically prolonged PR interval that might be attributable to thyrotoxicosis (sinus tachycardia is usually associated[circ.ahajournals.org] Twelve-lead ECG shows sinus tachycardia at approximately 100 beats per minute, prolonged PR intervals at 240 ms (P waves partly hidden in the preceding repolarization complex[circ.ahajournals.org]

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