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105 Possible Causes for Septal Q Wave

  • Left Anterior Fascicular Block

    […] of the inferior activation of the LV (preservation, on the EKG, of septal Q waves in I and aVL and predominantly negative QRS complex in leads II, III, and aVF).[en.wikipedia.org] Diagnostic criteria for LBBB: 1) Total QRS duration 0.12 s. 2) No secondary R wave in V1 to indicate RBBB. 3) No septal q wave in V5, V6 or in leads further to the left (lead[frca.co.uk] Although there is a delay or block in activation of the left anterior fascicle there is still preservation of initial left to right septal activation as well as preservation[en.wikipedia.org]

  • Posterior Myocardial Infarction

    While these might possibly be normal septal q waves — it is far more likely that they reflect ongoing acute infarction.[ecg-interpretation.blogspot.com] WPW preexcitation ( negative delta wave may mimic pathologic Q waves) IHSS (septal hypertrophy may make normal septal Q waves "fatter" thereby mimicking pathologic Q waves[ecg.utah.edu] (acute) Posteroseptal transmural (Q wave) infarction (acute) Septal transmural (Q wave) infarction (acute) NOS The following code(s) above I21.29 contain annotation back-references[icd10data.com]

  • Apical Myocardial Infarction

    RESULTS: In the group of 29 patients presenting wide isolated apical perfusion defect (wAPD) Q waves in anterior segments with definition of antero-septal MI was prevalent[ncbi.nlm.nih.gov] (acute) Posteroseptal transmural (Q wave) infarction (acute) Septal transmural (Q wave) infarction (acute) NOS I21.3 ST elevation (STEMI) myocardial infarction of unspecified[icd10coded.com] Conclusion: High resolution cardiac MRI applied in patients with acute infarction and new Q waves in leads V 1 -V 4 demonstrates the presence of predominantly apical, but[hungary.pure.elsevier.com]

  • Hypertrophic Cardiomyopathy

    These may mimic prior myocardial infarction, although the Q-wave morphology is different: infarction Q waves are typically 40 ms duration while septal Q waves in HCM are 40[lifeinthefastlane.com] The classic finding is large, dagger-like “septal Q waves” in the inferior and lateral leads due to the abnormally hypertrophied interventricular septum.[healio.com] Asymmetrical septal hypertrophy produces deep, narrow (“dagger-like”) Q waves in the lateral (V5-6, I, aVL) and inferior (II, III, aVF) leads.[lifeinthefastlane.com]

  • Left Bundle Branch Block

    Q-waves, and first-degree atrioventricular block (PR 236ms).[radcliffecardiology.com] Q waves in the lateral leads INCOMPLETE Left Bundle Branch Block - Normal QRS duration, but otherwise looks like a left bundle branch block Causes of Left Bundle Branch Block[derangedphysiology.com] Depolarization of septum yields the small r-waves seen in V1 and V2, and the small q-waves seen in V5 and V6 (“septal q-waves”).[ecgwaves.com]

  • Lateral Wall Myocardial Infarction

    WPW preexcitation ( negative delta wave may mimic pathologic Q waves) IHSS (septal hypertrophy may make normal septal Q waves "fatter" thereby mimicking pathologic Q waves[ecg.utah.edu] (acute) Posteroseptal transmural (Q wave) infarction (acute) Septal transmural (Q wave) infarction (acute) NOS The following code(s) above I21.29 contain annotation back-references[icd10data.com] Septal Myocardial Infarction The ECG shows Q waves in leads V 1 and V 2.[circ.ahajournals.org]

  • Myocardial Abscess

    Two additional findings were noted in the present case: echocardiographic evidence of septal thickening, and loss of septal Q waves on the electrocardiogram.[ncbi.nlm.nih.gov]

  • Congenitally Uncorrected Transposition of the Great Arteries

    ECG absence of Q waves in the lateral precordium (V4-6) physiologic Q waves in these leads often referred to as "septal" Q waves prominent Q waves in right precordium (V1-[radiopaedia.org]

  • Cardiomyopathy

    […] abnormalities Q waves BBB LV hypertrophy and ischemia Deep septal Q waves LV hypertrophy or low QRS voltage Echocardiography Dilated hypokinetic ventricles mural thrombus[merckmanuals.com] Q waves in the septal leads may be present and arrhythmias, supraventricular and ventricular, occur in up to half of the patients.[revportcardiol.org] S4 Bifid carotid pulse with a brisk upstroke and rapid downstroke Exertional dyspnea and fatigue LV RV failure Functional AV valve regurgitation ECG Nonspecific ST- and T-wave[merckmanuals.com]

  • Lenegre Disease

    Q waves in the lateral leads INCOMPLETE Left Bundle Branch Block - Normal QRS duration, but otherwise looks like a left bundle branch block Causes of Left Bundle Branch Block[derangedphysiology.com] Q waves in leads I, V 5 and V 6 ) often occurs in association with dilative cardiomyopathy.[revespcardiol.org] […] segments and the QRS complexes always point in opposite directions o There should be left axis deviation o The right ventricle depolarizes first, and this eliminates the normal septal[derangedphysiology.com]

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