Premature infants who exhibit 5 to 10 seconds of respiratory pauses followed by 10 to 15 seconds of compensatory rapid respiration are:.
Suffering from sleep or wakeful apnea.
Experiencing severe swings in blood pressure.
Trying to maintain a neutral thermal environment.
Breathing in a respiratory pattern common to premature infants.
The Correct Answer is D
This pattern is called periodic breathing and it is characterized by 5 to 10 seconds of respiratory pauses followed by 10 to 15 seconds of compensatory rapid respiration. It is a normal phenomenon that occurs primarily in premature infants of more than 24 hours of age. It is usually not of pathologic significance and does not require intervention.
Choice A is wrong because sleep or wakeful apnea is defined as a cessation of breathing for more than 20 seconds or less than 20 seconds with bradycardia or cyanosis.
Choice B is wrong because severe swings in blood pressure are not associated with periodic breathing, but rather with intraventricular hemorrhage or patent ductus arteriosus.
Choice C is wrong because trying to maintain a neutral thermal environment does not affect the respiratory pattern of premature infants.
Normal ranges for respiratory rate in premature infants are 40 to 60 breaths per minute. Normal ranges for oxygen saturation in premature infants are 88% to 92%.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
“You may need to increase the caloric density of your infant’s formula.” This is because infants with heart failure have increased metabolic needs and may not be able to consume enough volume to meet their nutritional requirements. Increasing the caloric density of the formula can help them achieve adequate growth and development without overloading their heart.
Choice B is wrong because feeding the baby every 2 hours may cause fatigue and dehydration. Infants with heart failure should be fed every 3 to 4 hours or on demand.
Choice C is wrong because increasing the amount of formula may cause fluid retention and worsen heart failure. Infants with heart failure should be fed small, frequent amounts of formula.
Choice D is wrong because placing a nasal oxygen cannula on the infant during and after each feeding may not be necessary or beneficial. Oxygen therapy should be prescribed by a physician based on the infant’s oxygen saturation levels and clinical signs of hypoxia.
Correct Answer is B
Explanation
This is because a patent ductus arteriosus is a congenital heart defect that involves a defect in which the fetal shunt between the aorta and the pulmonary artery fails to close. This causes a continuous machinery-like murmur that can be heard on auscultation.
Choice A is wrong because pulmonary stenosis is a narrowing of the pulmonary valve or artery that obstructs blood flow to the lungs. It causes a systolic ejection murmur that is best heard at the upper left sternal border.
Choice C is wrong because the ventricular septal defect is a hole in the wall between the ventricles that allows blood to flow from the left to the right side of the heart. It causes a loud, harsh holosystolic murmur that is best heard at the left lower sternal border.
Choice D is wrong because coarctation of the aorta is a narrowing of the aorta that reduces blood flow to the lower body. It causes a systolic murmur that radiates to the back and weak or absent femoral pulses.
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