Basic Dysrhythmia Assessment A, Relias Dysrhythmia, Advanced Cardiac Dysrhythmias Complete Questions and Correct Detailed Answers (Verified Answers) Already Graded A+

Basic Dysrhythmia Assessment A,
Relias Dysrhythmia, Advanced
Cardiac Dysrhythmias Complete
Questions and Correct Detailed
Answers (Verified Answers) Already
Graded A+
1. Normal Sinus Rhythm (NSR)

Correct Answer: Sinus Rhythm

Characteristics:

• Rate: 60–100 bpm

• Rhythm: Regular

• P Wave: Present, upright, one P wave before every QRS

• PR Interval: 0.12–0.20 sec

• QRS: <0.12 sec

Key Point:
A normal electrical impulse begins in the SA node.



2. Sinus Bradycardia

Correct Answer: Sinus Bradycardia

Characteristics:

• Rate: <60 bpm

• Rhythm: Regular

• P Wave: Present and upright

, • PR Interval: 0.12–0.20 sec

• QRS: <0.12 sec

Causes:

• Athletes

• Sleep

• Increased vagal tone

• Hypothyroidism

• Beta blockers

Treatment may include:

• Observation if asymptomatic

• Atropine if symptomatic



3. Sinus Tachycardia

Correct Answer: Sinus Tachycardia

Characteristics:

• Rate: >100 bpm

• Rhythm: Regular

• P Wave: Present before every QRS

• PR Interval: Normal

• QRS: Narrow

Causes:

• Exercise

• Fever

• Pain

• Anxiety

• Hypovolemia