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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Correct Answer is B
Explanation
A. This option is incorrect as it does not describe the expected blood pressure difference in coarctation of the aorta.
B. Coarctation of the aorta typically presents with higher blood pressure in the upper body (arms) and lower blood pressure in the lower body (legs) due to the obstruction of blood flow distal to the aortic arch.
C. This option is incorrect because while coarctation can lead to decreased perfusion in the lower extremities, it does not typically result in decreased blood pressure in both the arms and legs simultaneously.
D. While increased blood pressure may occur in the arms, the legs would not typically show increased blood pressure in cases of coarctation.
Correct Answer is A
Explanation
A. Furosemide is a loop diuretic that can cause potassium loss; therefore, it is essential for the child to eat potassium-rich foods to prevent hypokalemia.
B. Taking furosemide at bedtime is not advisable due to the increased risk of nocturia and sleep disturbances from frequent urination.
C. Aspirin is not recommended without medical guidance, especially for children, as it can increase the risk of Reye's syndrome.
D. Expecting swelling in the hands and feet contradicts the purpose of furosemide, which is to reduce fluid overload; parents should report any unexpected swelling to the healthcare provider.