Which assessment findings may cause the nurse to suspect a brachial plexus injury?
The newborn has hypotonia
The newborn does not demonstrate the Moro reflex
The newborn cries continually
The newborn has tremors
The Correct Answer is B
Choice A reason:
The newborn has hypotonia. This is not a specific sign of brachial plexus injury, as hypotonia can have many other causes, such as genetic disorders, infections, or brain damage.
Hypotonia is a general term for low muscle tone or weakness, which can affect the whole body or specific parts.
Choice B reason:
The newborn does not demonstrate the Moro reflex. This is a sign of brachial plexus injury, especially if it affects only one arm. The Moro reflex is a startle response that causes the baby to throw out the arms and legs, then curl them in when startled. A brachial plexus injury can impair the nerve function in the shoulder, arm, or hand, leading to decreased movement or sensation in the upper extremity. If the baby does not show the Moro reflex on one side, it may indicate damage to the upper brachial plexus nerves (C5-C7), also known as Erb's palsy.
Choice C reason:
The newborn cries continually. This is not a specific sign of brachial plexus injury, as crying can have many other causes, such as hunger, discomfort, or colic. Crying is a normal way for babies to communicate their needs and feelings. Crying does not necessarily indicate pain from a brachial plexus injury, as infants' nerves behave differently from adults' and they may not experience much pain from this condition.
Choice D reason:
The newborn has tremors. This is not a specific sign of brachial plexus injury, as tremors can have many other causes, such as cold temperature, low blood sugar, or withdrawal from maternal medications. Tremors are involuntary movements of the muscles that can affect the whole body or specific parts. Tremors do not necessarily indicate nerve damage from a brachial plexus injury, as this condition usually causes weakness or paralysis of the affected muscles.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C","D"]
Explanation
Choice A:
Lidocaine gel to the umbilical stump is not a medication that the nurse should expect to administer to a newborn immediately following birth. Lidocaine gel is a topical anesthetic that is used to numb the skin before procedures such as injections or sutures. It is not indicated for the umbilical stump, which does not require any anesthesia.
Choice B:
Hepatitis B immunization is a medication that the nurse should expect to administer to a newborn immediately following birth. Hepatitis B is a viral infection that can cause liver damage and cancer. The immunization protects the newborn from contracting the infection from the mother or other sources. The immunization is given as an intramuscular injection in the anterolateral thigh within 12 hours of birth.
Choice C:
Phytonadione injection is a medication that the nurse should expect to administer to a newborn immediately following birth. Phytonadione is also known as vitamin K, which is essential for blood clotting. Newborns have low levels of vitamin K at birth, which puts them at risk of bleeding disorders such as hemorrhagic disease of the newborn. The injection is given as a single dose of 0.5 to 1 mg in the vastus lateralis muscle within 1 hour of birth.
Choice D:
Antibiotic ophthalmic ointment is a medication that the nurse should expect to administer to a newborn immediately following birth. Antibiotic ophthalmic ointment prevents eye infections caused by bacteria such as gonorrhea or chlamydia, which can be transmitted from the mother during delivery. The ointment is applied to both eyes within 1 hour of birth.
Choice E:
Haemophilus influenzae type b vaccine (Hib) is not a medication that the nurse should expect to administer to a newborn immediately following birth. Hib is a bacterial infection that can cause meningitis, pneumonia, and other serious illnesses. The vaccine protects the newborn from Hib infection, but it is not given at birth. The vaccine is part of the routine immunization schedule and is usually given at 2, 4, and 6 months of age.
Correct Answer is D
Explanation
Choice A:
Two arteries and two veins. This is incorrect because the umbilical cord normally has only three blood vessels: one vein and two arteries. Having four blood vessels is a rare anomaly that can be associated with congenital defects. •
Choice B:
Two veins and one artery. This is incorrect because the umbilical cord normally has only one vein and two arteries. Having two veins and one artery is another rare anomaly that can also be associated with congenital defects. •
Choice C:
One artery and one vein. This is incorrect because the umbilical cord normally has two arteries and one vein. Having only one artery and one vein is a common anomaly that occurs in about 1% of singleton pregnancies and 5% of twin pregnancies. It can be associated with intrauterine growth restriction, congenital anomalies, and perinatal mortality. •
Choice D:
Two arteries and one vein. This is correct because the umbilical cord normally has two arteries and one vein. The vein carries oxygenated blood from the placenta to the fetus, while the arteries carry deoxygenated blood from the fetus to the placenta. The umbilical cord also contains Wharton's jelly, which is a gelatinous substance that protects the blood vessels from compression.
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