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How to Intepret Arrythmias

May 30, 2018

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    How to Interprete Arrhythmias

    Ting Chih Kuan

    UKM Medical Centre

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    How to Interprete ECGs

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    The Basics Rate Rhythm Axis P wave QRS wave T wave Intervals PR, QT ST segment Voltage Regional representation Calibration and paper speed

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    I

    IIIII aVF

    aVLaVR

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    Arrhythmias

    Bradyarrhythmias

    Tachyarrhythmias Narrow complex arrhythmias

    Broad complex arrhythmias

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    Bradyarrhythmias

    SA node AV node

    Junctional Always think of Inferior MI

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    Tachyarrhythmias

    Narrow complex Broad complex

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    Narrow Complex Tachycardias

    Sinus tachycardia

    Supraventricular tachycardia AVNRT

    AVRT (Orthodromic) AT

    Atrial flutter/fibrillation

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    AVNRT

    Typical anterograde conduction via the

    slow pathway and the retrogradeconduction via the fast pathway ("slow-fast" AVNRT).

    Atypical- anterograde conduction via the

    fast pathway and the retrogradeconduction via the slow pathway ("fast-slow" AVNRT).

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    AVNRT

    Typical AVNRT Atypical AVNRT

    s l ow f a

    s t s l ow

    f a s t

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    AVRT

    Orthodromic AVRT anterograde

    conduction via the AV node

    Antidromic AVRT retrograde conductionvia the AV node (broad complex)

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    What do you think of these ECGs?

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    Broad Complex Tachycardia

    Ventricular Tachycardia SVT with abberancy

    SVT with pre-excitation Always think of electrolytes/toxins.

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    Where is it coming from??

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    Time for quiz?

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    Young Woman With Exercise-Induced

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    Syncope

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    48 y.o comatose women