A nurse is preparing to measure an infant's vital signs. The nurse should use which of the following sites to assess a heart rate?

Apex of the heart

Carotid artery

Brachial artery

Radial artery

Answer and Explanation

The Correct Answer is A

A. Apex of the heart: The apex of the heart is the preferred site for measuring an infant's heart rate. It is located at the 4th or 5th intercostal space, just medial to the midclavicular line, allowing for accurate auscultation of the heartbeat.

B. Carotid artery: While the carotid artery can be used to assess heart rate in older children and adults, it is not ideal for infants due to the risk of compromising circulation to the brain if pressure is applied too forcefully.

C. Brachial artery: The brachial artery is often used to assess pulse in infants, especially in cases of CPR, but it is not the preferred site for routine heart rate measurement. It may be used when assessing circulation or checking for pulses, but auscultation at the apex is more accurate for heart rate.

D. Radial artery: The radial artery can be difficult to palpate in infants due to their small size and is generally not used for heart rate assessment in this age group. The apex is a more reliable location.

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Correct Answer is B

Explanation

In this scenario, the infant has a heart rate of 190/min and a fever of 40°C (104°F). Fever in infants can cause an increase in heart rate, which is a normal physiological response to elevated body temperature. Fever is the body's way of responding to an infection or illness, and it triggers various physiological changes, including an increase in heart rate. This helps the body to circulate blood and deliver immune cells to fight off the infection.
The other options are not accurate or relevant to the infant's current condition:
A. "This is within the expected range for your baby." - A heart rate of 190/min is above the normal expected range for a 2-month-old infant, which is typically between 120 to 160 beats per minute. This response would not address the elevated heart rate and fever.
C. "As your baby begins to fall asleep, his heart rate will decrease." - While heart rate may decrease during sleep, it does not explain the elevated heart rate and fever observed in this situation.
D. "Your baby's heart is beating fast in an attempt to cool down his body." - While tachycardia (fast heart rate) can be associated with increased metabolic demands during fever, the main reason for the increased heart rate in this case is the fever itself, not the body's attempt to cool down. Fever is a response to infection or illness and can cause an increase in heart rate as part of the body's normal immune response.

A. Respiratory rate 20/min B. Abdominal pain rated 4 on a scale of 0 to 10 C. Heart rate 72/min D. Blood pressure 92/50 mm Hg

Correct Answer is D

Explanation

The nurse's priority assessment finding in an adolescent who experienced blunt trauma to the abdomen is low blood pressure (hypotension). Hypotension could indicate significant internal bleeding or hemorrhage, which is a life-threatening condition and requires immediate attention. The decreased blood pressure may be a sign of shock, and prompt intervention is needed to stabilize the client's condition and prevent further deterioration.

While all the other findings (respiratory rate, abdominal pain, and heart rate) are important and should be assessed and monitored, blood pressure is the most critical in this situation due to its potential association with severe internal injuries and the risk of hypovolemic shock.

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A nurse is preparing to measure an infant's vital signs. The nurse should use which of the following sites to assess a heart rate?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is obtaining vital signs from a 2-month-old infant. The infant's heart rate is 190/min and his temperature is 40° C (104° F). The father asks the nurse why the infant's heart is beating so fast. Which of the following responses by the nurse is appropriate?

Correct Answer is B

Explanation

A nurse is assessing an adolescent who experienced blunt trauma to the abdomen. Which of the following findings is the nurse's priority?

Correct Answer is D

Explanation

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