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
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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Related Questions
Correct Answer is B
Explanation
During a sickle cell crisis, the child experiences severe pain due to the sickled red blood cells blocking blood flow in the vessels, leading to tissue ischemia and infarction. Pain is the hallmark symptom of sickle cell crisis and can occur in various parts of the body, such as the abdomen, chest, back, joints, and extremities.
A. Constipation is not a common symptom of sickle cell crisis. It may be associated with other conditions but is not directly related to sickle cell crisis.
C. High fever is not a typical finding in sickle cell crisis. Fever may occur due to infections, which individuals with sickle cell disease are at increased risk of developing, but it is not a direct symptom of the crisis itself.
D. Bradycardia (slow heart rate) is not commonly associated with sickle cell crisis. Tachycardia (rapid heart rate) may occur in response to pain, but bradycardia is not a typical finding.
Correct Answer is C
Explanation
In an infant with a history of vomiting and fever, body weight is the most reliable indicator of fluid loss. Monitoring the infant's weight over time can help assess the degree of dehydration and guide the appropriate fluid replacement therapy. A significant decrease in body weight suggests significant fluid loss.
Option A: Skin integrity is important to assess for signs of dehydration, but it is not as reliable as body weight in determining the extent of fluid loss.
Option B: Respiratory rate can be affected by various factors and is not a direct indicator of fluid loss.
Option D: Blood pressure is not the most reliable indicator of fluid loss in an infant with dehydration. In severe cases of dehydration, blood pressure can drop, but it is not as sensitive as body weight in assessing the extent of fluid loss.
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