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Exam (elaborations)

HEART RHYTHMS (EKG Questions with Correct Solutions

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HEART RHYTHMS (EKG Questions with Correct Solutions

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HEART RHYTHMS (EKG Questions with Correct Solutions


Question:
1. normal sinus rhythm (NSR)

Answer:
regular rhythm of the heart cycle stimulated by the SA node (average rate of 60-100
beats/minute)




Question:
2. Sinus Bradycardia

Answer:
<60 bpm




Question:
3. Sinus Tachycardia

Answer:
>100 bpm




Question:
4. Premature Atrial Contraction (PAC)

Answer:
irregular heart rhythm characterized by atrial contractions occurring before the expected
time

, Question:
5. Supraventricular Tachycardia (SVT)

Answer:
an abnormal heart rhythm arising from abnormal electrical activity in the heart; originates at
or above the AV node




Question:
6. Sinus Arrest

Answer:
- SA node doesn't fire
- notice absence of P-wave for a complete cycle (a missed cycle)




Question:
7. Sinus Arrhythmia

Answer:
A sinus rhythm in which the rate varies with respiration, causing an irregular rhythm.




Question:
8. atrial fibrillation

Answer:
occurs when the normal rhythmic contractions of the atria are replaced by rapid irregular
twitching of the muscular heart wall




Question:
9. Preventricular Contraction (PVC)

Answer:
Abnormal beat generated from the ventricles. Characterized by a wide and bizarrely shaped
QRS.

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