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65 Possible Causes for Intraventricular Conduction Delay, Left Axis Deviation

  • Left Bundle Branch Block

    Left bundle branch block is usually associated with normal or left axis deviation.[] LBBB is associated with intraventricular conduction delay, paradoxical septal motion, and hemodynamic deterioration, indicating an impairment of left ventricular (LV) function[] Patients were classified into three groups: traditional LBBB according to American Heart Association, LBBB according to Strauss and intraventricular conduction delay (IVCD[]

  • Left Ventricular Hypertrophy

    […] atrial involvement - terminal deflection of P wave in V1 is 1 box wide, and 1 box deep or more (3 points) Left axis deviation - QRS axis is -30 degrees or more negative ([] This analysis included 4,904 participants (40% male; 85% white) from the Cardiovascular Health Study who were free of baseline AF and major intraventricular conduction delays[] Left axis deviation.[]

  • Left Anterior Fascicular Block

    Non-specific intraventricular conduction delay due to the lesions of the conduction bundles and slow cell to cell conduction has also been considered as another cause of heart[] The two current criteria for diagnosis of left anterior fascicular block (LAFB) were evaluated; they are marked left axis deviation (LAD) and a delay in the time of inscription[] Next chapter Non-specific Intraventricular Conduction Delay Related chapters Overview of Intraventricular Conduction Defects Right Bundle Branch Block (RBBB) Left Bundle Branch[]

  • Inferior Wall Myocardial Infarction

    You may also know this ECG abnormality as an intraventricular conduction delay (IVCD).[] Note pathologic Q-waves in V1-4, late R wave in V1, wide S waves in lead I, and left axis deviation (-80 degrees).[] He seemed to be pain free during this first ED ECG, but he was unclear about it: Sinus rhythm with a nonspecific intraventricular conduction delay of 138 ms.[]

  • Anterior Pituitary Disease

    ECG Criteria for Left Anterior Fascicular Block (LAFB) Left axis deviation (usually between -45 and -90 degrees) Small Q waves with tall R waves ( ‘qR complexes’) in leads[] Next chapter Non-specific Intraventricular Conduction Delay Related chapters Overview of Intraventricular Conduction Defects Right Bundle Branch Block (RBBB) Left Bundle Branch[] Axis Deviation (LAD) Leads I and aVL are POSITIVE ; Leads II, III and aVF are NEGATIVE Prolonged R-wave peak time Prolonged R-wave peak time ( the time from onset of the[]

  • Conduction Disorder of the Heart

    No other cause for left axis deviation is identified. Left posterior fascicular (or hemi) block Right axis deviation (mean frontal plane axis clockwise to 90 ).[] Thus, the appearance of nonspecific intraventricular conduction delay may be rather nuanced.[] If left axis deviation is present, think about left anterior fascicular block , and if right axis deviation is present, think about left posterior fascicular block in addition[]

  • Dilated Cardiomyopathy

    Biatrial enlargement Left ventricular hypertrophy or biventricular enlargement Left bundle branch block ( RBBB can also occur). Left axis deviation.[] For one in three patients with an intraventricular conduction delay, biventricular pacing improves symptoms, reduces hospitalizations and mortality.[] conduction delay, and implantable cardioverter-defibrillators in those at risk of arrhythmia.[]

  • Left Posterior Fascicular Block

    Verapamil-sensitive, idiopathic left ventricular tachycardia (ILVT) with right bundle branch block configuration and left-axis deviation is known to be due to re-entry mechanism[] Right Bundle Branch Block RBBB is a result of conduction delay in any portion of the right-sided intraventricular conduction system.[] The electrical axis will be shifted to the left (left axis deviation), ranging between -45 and -90 .[]

  • Ischemic Cardiomyopathy

    In this patient the VT had a right bundle-branch block and left axis deviation morphology (Belhassen morphology). The VT responded well to verapamil therapy.[] Effects of multisite biventricular pacing in patients with heart failure and intraventricular conduction delay.[] The five most common abnormalities seen on the ECG are Q waves (from a previous MI), diffuse ST-segment abnormalities, left bundle branch block (or any intraventricular conduction[]

  • Brugada Syndrome

    This ECG shows normal sinus rhythm with a widened QRS complex (140 ms) at 66 beats per minute with a left axis deviation.[] conduction delay (16%), and atrial arrhythmias (8%).[] Presence of first-degree atrioventricular (AV) block and left-axis deviation of the QRS. Presence of atrial fibrillation. Signal-averaged ECG; late potentials.[]

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