A nurse is assessing a newborn who has Erb-Duchenne palsy.
Which of the following findings should the nurse expect?
Difficulty sucking and swallowing.
Absent Moro reflex in the affected extremity.
Positive Babinski reflex.
Cleft palate.
The Correct Answer is B
Choice A rationale
Erb-Duchenne palsy, a form of brachial plexus injury (C5-C6), primarily affects the nerves controlling the shoulder and upper arm muscles. It generally does not affect cranial nerves (such as IX and X, which control swallowing) or the muscles of the mouth, thus typically preserving the ability to suck and swallow.
Choice B rationale
The Moro (startle) reflex involves symmetrical extension and abduction of the arms followed by adduction and flexion. An injury to the brachial plexus on one side impairs the motor function of that arm, resulting in the characteristic absence of the reflex in the affected extremity, which is a key diagnostic finding.
Choice C rationale
The Babinski reflex is a normal neurological finding in infants up to about 2 years old, reflecting immature corticospinal tracts. It is a foot reflex and is unrelated to a brachial plexus injury in the neck and shoulder area; thus, its presence is not a specific finding for Erb-Duchenne palsy.
Choice D rationale
Cleft palate is a congenital craniofacial malformation resulting from incomplete fusion of the palatine shelves during fetal development. It is a structural anomaly of the mouth and is not a finding or complication associated with Erb-Duchenne palsy, which is a neuromuscular injury sustained, most commonly, during birth.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
Skin mottling, characterized by a patchy, net-like, reddish-blue discoloration of the skin, is typically caused by vasoconstriction in response to cold exposure or by circulatory changes in individuals with poor peripheral perfusion. This is not a typical, expected body change during a normal pregnancy; expected skin changes relate more to hyperpigmentation (e.g., chloasma, linea nigra).
Choice B rationale
During pregnancy, hormonal changes, particularly the increase in estrogen, shift a greater proportion of hair follicles into the anagen (growth) phase, leading to thicker, fuller hair. Hair thinning (telogen effluvium) is commonly experienced postpartum when hormone levels drop and the hair follicles shift rapidly back into the telogen (resting) phase, thus it is not expected at 14 weeks gestation.
Choice C rationale
Nipple inversion is a structural variation where the nipple is retracted into the areola; it is not a change that typically develops during pregnancy. Expected breast changes include areolar darkening (hyperpigmentation), prominent Montgomery's tubercles, and nipple erection. Nipple inversion is a pre-existing condition that may present challenges for breastfeeding.
Choice D rationale
Breast enlargement (hypertrophy) is an expected and early body change during pregnancy, beginning in the first trimester (around 6 weeks). This growth is driven by elevated estrogen and progesterone levels, stimulating the development of the mammary glands in preparation for lactation, and is often accompanied by tenderness and increased vascularity.
Correct Answer is D
Explanation
Choice A rationale
A pain rating of 3/10 indicates mild pain and is a expected finding following a vaginal birth with a third-degree laceration repair. Pain alone is not the primary indicator for catheterization unless it is severe enough to prevent voiding. The focus for catheterization is on signs of urinary retention and its consequences, like uterine atony.
Choice B rationale
Lochia rubra (bright red discharge, typically lasting 1-3 days) is the expected type of lochia 4 hours postpartum, and a moderate amount is normal. The characteristics of lochia are indicators of uterine involution and healing, but do not directly confirm the need for a catheterization due to inability to void.
Choice C rationale
Ecchymosis (bruising) and edema of the perineum are expected signs following a vaginal birth, especially with a laceration and repair. While swelling can sometimes contribute to difficulty voiding, it is an expected localized finding and not the most direct indicator that immediate straight catheterization is required to manage urinary retention.
Choice D rationale
A boggy (soft, not contracted) and deviated uterus is the most critical sign indicating a full or distended bladder preventing the uterus from contracting effectively. This distention leads to urinary retention and significantly increases the client's risk for postpartum hemorrhage. Immediate straight catheterization is necessary to empty the bladder and allow the uterus to firm up.
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