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26 Possible Causes for Inferior Q Wave, Inverted P Wave

  • Cardiomyopathy

    There are some signs of left atrial enlargement — leftward deviation of the P wave axis (positive P waves in I and aVL, inverted in III and aVF) and prolongation of the terminal[] waves , particularly in the inferior (II, III, and aVF) and lateral ( I , aVL, V4-6) leads as signs of a hypertrophic septum Signs of left ventricular hypertrophy (see Sokolow-Lyon[] […] portion of the P wave in V1.[]

  • Anomalies of Coronary Artery Origin

    The resting electrocardiogram demonstrated incomplete right bundle branch block and T wave inversion in the inferior leads.[] He had a history of non Q myocardial infarction and a family history of sudden cardiac death.[]

  • Acute Atrial Infarction

    (Example 2) Normal Inferior Q waves - not Old Inferior Wall Myocardial Infarction (MI) ECG Old Inferior Wall Myocardial Infarction (MI) ECG (Example 1) Old Inferior Wall Myocardial[] Atrial fibrillation in inferior wall Q-wave acute myocardial infarction. Am J Cardiol1991;67:135-6. 5. Tilling L, Clapp B.[] Case 3 is a male of 66 years old with acute inferior VMI with Q wave and acute anteroapical and lateral VMI non Q concomitant with AI proved by the atrial repolarization elevation[]

  • Cor Pulmonale

    The most typical ECG findings in emphysema are: Rightward shift of the P wave axis with prominent P waves in the inferior leads and flattened or inverted P waves in leads[] The ECG often mimics myocardial infarction ; Q waves may be present in leads II, III, and aVF because of the vertically placed heart, but they are rarely deep or wide, as[] The electrocardiogram evidenced sinus rhythm with 100 bpm, peaked P wave and inverted T wave from V1 to V3.[]

  • Hypertrophic Cardiomyopathy

    New subtype of apical hypertrophic cardiomyopathy identified with nuclear magnetic resonance imaging as an underlying cause of markedly inverted T-waves.[] Lateral Q waves are more common than inferior Q waves in HCM.[] The classic finding is large, dagger-like “septal Q waves” in the inferior and lateral leads due to the abnormally hypertrophied interventricular septum.[]

  • Atrial Bigeminy

    P wave with a PRI 120ms.[] The q waves in inferior leads show old inferior myocardial infarction. Click here for a more detailed ECG ECG 5. Atrial bigeminal rhythm is seen in the above ECG.[] The q waves in inferior leads show old inferior myocardial infarction . Click here for a more detailed ECG ECG 5. Atrial bigeminal rhythm is seen in the above ECG.[]

  • Ebstein Malformation

    In the absence of an ectopic focus, P waves are upright in aVR and inverted in I and aVL. 95 Ventricular depolarization and repolarization occur in an inverse fashion.[] In inferior leads, Q waves are deepest in lead III. T waves are positive in all precordial leads.[] The right atrium and sinus node are on the patient’s left side and yield a P-wave axis that remains inferiorly oriented but displaced to the right.[]

  • Corrected Transposition of the Great Vessels

    ELECTROCARDIOGRAM Absence of Q waves Upright T waves Broad notched P waves 8 yr old boy with CCTGA large non restrictive VSD with left to right shunt 29.[] ELECTROCARDIOGRAM The P wave  Is normal in direction and configuration but broad notched P waves may be seen when left AV valve is regurgitant or large VSD with L  R SHUNT[] Chest XRAY Narrow vascular pedicle ‘HUMP SHAPED’ appearance of left cardiac silhouette of right ventricle due to inverted infundibulum.[]

  • Atrial Tachyarrhythmia with Short PR Interval

    Diagnostic criteria include PR interval of no more than 120 ms, normal QRS complex duration, a normal or inverted P wave, and paroxysmal supraventricular tachycardia (PSVT[] Q waves in II, III, aVF and negative T waves in III and aVF denote to old inferior wall myocardial infarction. Click here for a more detailed ECG ECG 9a.[] She was euthyroid; ECG revealed regular rhythm with inverted P waves, short PR interval, absent delta waves with normal QRS morphology ( Figure 1 ).[]

  • Left Anterior Fascicular Block

    Of the few P-waves we can see, their shape is uniformly round. They appear to be upright in v1 but possibly inverted in v2–6.[] Note: An old inferior wall myocardial infarction is not able to be diagnosed in the setting of a left anterior fascicular block due to the inferior Q waves present from the[] The most common causes of left axis deviation are left anterior fascicular block and inferior Q waves secondary to acute myocardial infarction.[]

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