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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?

A.

Supraventricular tachycardia

B.

Atrial fibrillation

C.

Sinus bradycardia

D.

First-degree heart block

Answer and Explanation

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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View Related questions

Correct Answer is C

Explanation

A. The meningococcal (MCV4) vaccine is typically recommended for preteens and adolescents, usually starting at age 11.

B. The hepatitis B vaccine is typically administered at birth, 1-2 months, and 6-18 months, so a 4-year-old may already have received this vaccine.

C. The varicella (VAR) vaccine is recommended for children at ages 12-15 months and again at 4-6 years, making it appropriate for a 4-year-old child.

D. The Haemophilus influenza type b (Hib) vaccine is usually given to children in a series before 5 years of age, but it is more commonly completed by age 2-3 years. The 4-year-old may already be up to date with this vaccine.

Correct Answer is D

Explanation

A. Weak pulses are more indicative of reduced cardiac output or other cardiac issues, rather than specifically a large patent ductus arteriosus (PDA).

B. Cyanosis with crying can occur in various conditions, but it is not a hallmark of a large PDA; it typically presents with other symptoms.

C. Chronic hypoxemia is more associated with severe heart defects or lung conditions, whereas a large PDA may present with other signs first.

D. A systolic murmur is a classic finding in large PDAs due to the left-to-right shunting of blood, making it the most expected manifestation in this scenario.

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