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?
Brachial artery
Radial artery
Apex of the heart
Carotid artery
The Correct Answer is A
Rationale:
A. The brachial artery is commonly used to assess the heart rate in infants due to its accessibility and the ease of palpation in smaller limbs.
B. The radial artery is not typically used in infants because it is less accessible and not as easily palpated in this age group.
C. While the apex of the heart is where heart sounds are best auscultated, it is not used to palpate the pulse in infants.
D. The carotid artery is not typically used for assessing the heart rate in infants due to the risk of applying excessive pressure.
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Correct Answer is B
Explanation
Rationale:
A. Sitting on a nurse's lap leaning forward is a safe position for postural drainage as it promotes drainage from the upper lobes of the lungs.
B. The Trendelenburg position, where the body is laid flat on the back with the feet higher than the head, is contraindicated for infants with cystic fibrosis because it can increase the risk of gastroesophageal reflux and aspiration.
C. The supine position is generally safe but does not facilitate effective postural drainage compared to other positions.
D. Sitting on a nurse's lap leaning backward is safe and can be used for drainage from the anterior lung segments.
Correct Answer is B
Explanation
Rationale:
A. Hypotension is not typically associated with coarctation of the aorta; it more often leads to hypertension in the upper body.
B. Unequal pulses in the upper and lower extremities are a classic sign of coarctation of the aorta, as the obstruction typically affects blood flow to the lower body.
C. Excessive crying is not a specific indicator of coarctation of the aorta and can occur due to various reasons.
D. A diastolic murmur is not a primary indicator of coarctation of the aorta; it is more associated with other cardiac conditions.