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Tachycardia: Multifocal Atrial Tachycardia: Diagnosis and Treatment

by Carlo Raj, MD
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    The lecture Tachycardia: Multifocal Atrial Tachycardia: Diagnosis and Treatment by Carlo Raj, MD is from the course Arrhythmias.


    Included Quiz Questions

    1. All may be treated with digoxin
    2. Heart rate must be above 100 bpm
    3. They share common etiologies such as hypertension and ischemic heart disease
    4. The main goal of therapy is avoiding transmission of arrhythmia to the ventricles
    5. Always involves abnormalities of the p wave
    1. WAP has a heart rate < 100 bpm, while MAT must be > 100 bpm.
    2. Digoxin is effective only in MAT
    3. They affect different phases of the action potential
    4. Only MAT must be treated
    5. WAP may be differentiated by the morphology of the p wave
    1. Abnormal QRS complex morphology
    2. Heart rate > 100 bpm
    3. Irregular atrial rate
    4. Must be expressed on a single ECG rhythm strip
    5. 3 distinct P wave morphologies must be seen
    1. Digoxin
    2. Metoprolol
    3. Aspirin
    4. Warfarin
    5. Verapamil
    1. Heart rate is slowed by increasing the gradient of phase 4
    2. It is associated with the “funny” channel
    3. It can be modulated by using beta blockers
    4. It involves the movement of Na
    5. It can be modulated by acetylcholine
    1. Look for an upright QRS complex following a p wave on lead II
    2. Look at the rhythm strip for regular R-R intervals
    3. Look for an inverted p wave and an inverted QRS complex on lead II
    4. Look for an inverted p wave following a QRS complex on lead II
    5. Look at lead I for a p wave with normal morphology followed by any QRS complex

    Author of lecture Tachycardia: Multifocal Atrial Tachycardia: Diagnosis and Treatment

     Carlo Raj, MD

    Carlo Raj, MD


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