A nurse is analyzing a client's electrocardiogram (ECG) strip and identifies the following information: Heart rate: 92/min Rhythm: Irregular P wave:
Unable to identify PR interval:
Unable to measure QRS duration:
0.10 seconds Based upon this information,
thenurse should interpret the client's rhythm as indicating which of the following?
Supraventricular tachycardia
Atrial fibrillation
Sinus bradycardia
First-degree heart block
The Correct Answer is B
A. Supraventricular tachycardia (SVT) typically has identifiable P waves; the absence of P waves suggests a different condition.
B. Atrial fibrillation is characterized by an irregular rhythm, inability to identify P waves, and varying intervals. This interpretation aligns with the client's ECG findings.
C. Sinus bradycardia would show identifiable P waves and a regular rhythm with a heart rate less than 60 bpm, which does not match the provided information.
D. First-degree heart block would also show identifiable P waves and regularity in the rhythm with a prolonged PR interval, which is not indicated here.
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Explanation
A. The parent applying prescribed medication as instructed indicates proper understanding of post-operative care and adherence to treatment.
B. Allowing the child to lift their older sibling above the ground is inappropriate as it can lead to increased pressure on the ear, risking complications.
C. Enforcing nose blowing only when necessary is a correct action since excessive force can displace the tympanoplasty tube or introduce bacteria into the ear.
D. Planning to have the child use ear plugs in the shower is an effective precaution to protect the ears from water exposure, which is essential post-surgery.
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Correct Answer is B
Explanation
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B. The sweat chloride test measures the amount of chloride in the sweat, with elevated levels confirming a diagnosis of cystic fibrosis.
C. Pulmonary function tests assess lung function but are not definitive for diagnosing cystic fibrosis.
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