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32 Possible Causes for Inferior Q Wave, Short PR Interval

  • Ebstein Malformation

    The classic WPW ECG pattern consists of : A short PR interval (rapid AV conduction through the accessory pathway) Delta wave (initial slow ventricular activation due to fiber[pedclerk.bsd.uchicago.edu] In inferior leads, Q waves are deepest in lead III. T waves are positive in all precordial leads.[doi.org] interval; may be normal/short in patients with Wolff-Parkinson-White syndrome Right bundle branch block and/or low voltage QRS complex Imaging studies The following imaging[emedicine.medscape.com]

  • Hypertrophic Cardiomyopathy

    PR interval ( First-degree (PR 0.21 s, not shortening with hyperventilation), second-degree, or third-degree atrioventricular block To assess whether the changing pattern[doi.org] Lateral Q waves are more common than inferior Q waves in HCM.[lifeinthefastlane.com] interval of 120 to 180 ms, but when the PR interval is shorter, a very short AV delay (50 to 60 ms) is frequently required for complete ventricular capture. 183 This often[doi.org]

  • Myocardial 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[healio.com] In fact, a prominent R wave in V 1 was shown to be due to lateral, not posterior, MI. 2 This case shows an isolated lateral MI because no Q waves were displayed in the inferior[circ.ahajournals.org] Example 7 Anterior-inferior STEMI ST elevation is present throughout the precordial and inferior leads. There are hyperacute T waves, most prominent in V1-3.[lifeinthefastlane.com]

  • Acute Myocardial Infarction

    ., Atrial fibrillation in inferior wall Q-wave acute myocardial infarction, Am J Cardiol., 1991,67 (13), 1135-1136 PubMed Crossref Google Scholar [26] Sinno H., Derakhchan[degruyter.com] (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[healio.com] wave versus non-Q wave, anterior, inferior, right ventricular, etc.[clinicaladvisor.com]

  • Preexcitation Syndrome

    The classic electrocardiogram in Wolff-Parkinson-White (WPW) syndrome is characterized by a short PR interval and prolonged QRS duration in the presence of sinus rhythm with[ncbi.nlm.nih.gov] […] in the inferior / anterior leads (“pseudo-Q waves”), or as a prominent R wave in V1-3 (mimicking posterior infarction).[lifeinthefastlane.com] However the main basis for this diagnosis is the ECG which associates short PR interval and widening of QRS complex with a delta wave.[ncbi.nlm.nih.gov]

  • Lown-Ganong-Levine Syndrome

    The PR interval is short. Click here for a more detailed ECG ECG 3. Short PR interval in a 7 years-old boy.[metealpaslan.com] […] in the inferior / anterior leads (“pseudo-Q waves”), or as a prominent R wave in V1-3 (mimicking posterior infarction).[lifeinthefastlane.com] PR interval and normal QRS in LGL.[emedicine.com]

  • Wolff-Parkinson-White Syndrome

    Diagnosis is typically when an electrocardiogram (ECG) show a short PR interval and a delta wave.[en.wikipedia.org] […] in the inferior / anterior leads (“pseudo-Q waves”), or as a prominent R wave in V1-3 (mimicking posterior infarction).[lifeinthefastlane.com] Pathologic ST-segment elevation beyond 1 mm (double arrow) with pathologic Q waves (arrow) in lead V 3 .[accessmedicine.com]

  • Atrial Tachyarrhythmia with Short PR Interval

    Five additional family members had short PR intervals with normal QRS, and eight other family members had borderline short PR intervals.[ncbi.nlm.nih.gov] 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.[metealpaslan.com] […] aVL and qR in inferior leads (Q waves 40 ms). • QRS duration • Exclude other causes of right-axis deviation Left bundle-branch block (LBBB) • QRS duration 120 ms or longer[onlinejacc.org]

  • Left Posterior Fascicular Block

    Bundle branch block with short PR interval in healthy young people prone to paroxysmal tachycardia.[books.google.com] The most common causes of left axis deviation are left anterior fascicular block and inferior Q waves secondary to acute myocardial infarction.[ems12lead.com] Short PR Intervals A short PR interval, less than 0.12 seconds, is associated with accessory pathways between the atria and ventricles — the Wolff-Parkinson-White syndrome[nps.freeservers.com]

  • Left Anterior Fascicular Block

    PR interval ( 0.12s) Initial slurring of QRS complex (delta wave) representing early ventricular activation through normal ventricular muscle in region of the accessory pathway[ecg.utah.edu] 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[healio.com] IMI can also cause extreme left-axis deviation, but will manifest with Q-waves in the inferior leads II, III, and aVF.[en.wikipedia.org]

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