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What does the Heart Rhythm look like if the SA node fails to function normally?

Non Problematic Arrhythmias

Sinus Bradycardia (Non-Symptomatic)

The rate could be slow which would be called Sinus Bradycardia.

    1. The rate would be < 60
    2. All configurations of the rhythm would be normal
    3. If symptomatic, may need to be treated with Meds or Transcutaneous Pacing
Sinus Tachycardia

The rate could  increase which would be called Sinus Tachycardia
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    1. The rate would be > 100
    2. All configurations of the rhythm would be normal
    3. Stable Sinus Tachycardia is usually physiologic, developing in response to a condition that requires an increase in cardiac output (e.g., fever, hypovolemia, exercise). Treatment involves identifying and correcting the problem.
    4. Cardioversion is contraindicated in stable sinus tachycardia
Sinus Arrhythmia

It could cause phasic variation in rhythm with gradual speed up during
inspiration and slow down with expiration called Sinus Arrhythmia
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    1. Often occurs with Bradycardia
    2. Everything has normal configuration

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