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125 Possible Causes for Electrical Alternans

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  • Cardiac Tamponade

    Electrical alternans – i.e the beat-to-beat variation i electrical amplitude – is the ECG hallmark of cardiac tamponade.[ecgwaves.com] Electrical alternans consists of beat-to-beat shifts in the QRS complex due to swinging of the heart in a large effusion.[medcomic.com] We examined the diagnostic value of three ECG signs: low voltage, PR segment depression, and electrical alternans.[javed-abbas.tripod.com]

  • Pericardial Effusion

    Effusion Massive pericardial effusion produces a triad of: Low QRS voltage Tachycardia Electrical alternans ECG findings with Electrical alternans Electrical alternans occurs[lifeinthefastlane.com] Electrical Alternans 5.[slideshare.net] Electrical alternans vs. pseudoelectrical alternans.[lifeinthefastlane.com]

  • Malignant Pericardial Effusion

    For PEs of all sizes, the Se, Sp, PPV, and NPV for detecting cardiac tamponade were: low-voltage complexes (56%, 74%, 81%, 46%), electrical alternans (23%, 98%, 95%, 39%),[ncbi.nlm.nih.gov] EKG showing sinus tachycardia, low QRS voltage and electric alternans, suggesting pericardial effusion. Figure 2. C hest X-ray pre- and post-pericardiocentesis.[swjpcc.com] alternans are suggestive of pericardial effusion.[oncologypro.esmo.org]

  • Dissecting Aortic Aneurysm

    alternans (tamponade) Laboratory leukocytosis Cr elevation with renal artery involvement tropnonin elevated if dissection causes myocardial ischaemia D-dimer – if negative[lifeinthefastlane.com] […] liver) death INVESTIGATIONS Bedside ECG normal inferior ST elevation (right coronary dissection) but can be any STEMI (0.1% of STEMIs are dissections) pericarditis changes, electrical[lifeinthefastlane.com]

  • Pericardial Disorder

    C, Beat-to-beat variations in amplitude and contour of the QRS and ST-T complexes that characterize electrical alternans.[veteriankey.com] Electrical alternans – i.e the beat-to-beat variation i electrical amplitude – is the ECG hallmark of cardiac tamponade.[ecgwaves.com] alternans.[thoracickey.com]

  • Pericarditis

    In cardiac tamponade, the ECG shows electrical alternans as the heart “floats” in relation to the recording leads.[aafp.org] Electrical alternans is associated with variation in cardiac position (swinging heart).[merckmanuals.com] In such cases of cardiac tamponade, EKG or Holter monitor will then depict electrical alternans indicating wobbling of the heart in the fluid filled pericardium, and the capillary[en.wikipedia.org]

  • Post-Infarction Pericarditis

    alternans Electrical alternans in pericardial effusion varying QRS heights with each successive beat DMOC for pericardial effusion Echo![quizlet.com] EKG shows electrical alternans.[forums.studentdoctor.net] Electrical alternans is associated with variation in cardiac position (swinging heart).[merckmanuals.com]

  • Tuberculous Pericarditis

    Less frequently transient atrial fibrillation occurs in 4% of cases, and electrical alternans which is more specific of swinging heart and cardiac tamponade [ 9 ].[openaccessjournals.com] Abnormal findings on ECG include tachycardia, electrical alternans ( Figure 9 ), low voltage, and may include changes associated with acute pericarditis ( Figure 6 ).[clevelandclinicmeded.com] All this electrical abnormalities can be hidden in case of ST elevation myocardial infarction (STEMI).[openaccessjournals.com]

  • Pulsus Alternans

    alternans and mechanical alternans are both associated with cardiac ischaemia and in the case of electrical alternans there is a strong link with serious ventricular arrhythmia[doi.org] Both mechanical and electrical alternans disappeared with afterload reduction by nitroprusside treatment.[ncbi.nlm.nih.gov] Kalter and Schwartz first identified electrical alternans on surface ECG in 1948 Electrical alternans must be distinguished from mechanical alternans (eg, pulsus alternans[mdnxs.com]

  • Aortic Dissection

    Electrical Alternans in Cardiac Tamponade Laboratory findings Lab findings in aortic dissection are variable and most are very non-specific.[calshipleymd.com] alternans (tamponade) Laboratory leukocytosis Cr elevation with renal artery involvement tropnonin elevated if dissection causes myocardial ischaemia D-dimer – if negative[lifeinthefastlane.com] alternans" may be seen.[calshipleymd.com]

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