The nurse administers vitamin K intramuscularly as prophylaxis to the newborn based on which of the following rationales?
Select one:

Choice A Reason: Obtain a bilirubin level. This is an incorrect answer that indicates an irrelevant and unnecessary nursing action for a newborn with tremors or jiteriness. Obtaining a bilirubin level is a nursing action that is indicated for a newborn with jaundice (yellowish discoloration of the skin and mucous membranes), which can occur due to increased bilirubin production or decreased bilirubin excretion. Jaundice does not cause tremors or jiteriness in newborns.

Choice B Reason: Place a pulse oximeter on the newborn. This is an incorrect answer that suggests an inappropriate and insufficient nursing action for a newborn with tremors or jiteriness. Placing a pulse oximeter on the newborn is a nursing action that measures oxygen saturation and heart rate, which can indicate hypoxia (low oxygen level) or distress in newborns. Hypoxia can cause tremors or jiteriness in newborns, but it is not the only or most likely cause. Placing a pulse oximeter on the newborn does not provide enough information to diagnose or treat hypoglycemia.

Choice C Reason: Obtain a blood glucose level. This is because tremors or jiteriness are common signs of hypoglycemia (low blood glucose) in newborns, which can occur due to various factors such as prematurity, maternal diabetes, infection, or cold stress. Hypoglycemia can cause neurological damage or death if not treated promptly and effectively. Obtaining a blood glucose level is a nursing action that has the highest priority for a newborn with tremors or jiteriness, as it can confirm the diagnosis and guide the treatment.

Choice D Reason: Take the newborn's vital signs. This is an incorrect answer that implies an inadequate and delayed nursing action for a newborn with tremors or jiteriness. Taking the newborn's vital signs is a nursing action that monitors temperature, pulse, respiration, and blood pressure, which can indicate general health status and stability in newborns. Taking the newborn's vital signs may reveal signs of hypoglycemia, such as hypothermia, tachycardia, tachypnea, or hypotension, but it is not a specific or definitive test for hypoglycemia. Taking the newborn's vital signs may also waste valuable time that could be used to obtain a blood glucose level and initiate treatment.

Choice A Reason: Pulmonary edema is a condition where fluid accumulates in the lungs, causing shortness of breath and difficulty breathing. It can occur in preeclampsia due to increased blood pressure and fluid retention, but it is not a definitive sign of eclampsia.

Choice B Reason: Convulsion (seizure) is a sudden, involuntary contraction of muscles that can cause loss of consciousness, shaking, and twitching. It is the main symptom of eclampsia and distinguishes it from preeclampsia.

Choice C Reason: Renal failure is a condition where the kidneys fail to filter waste products from the blood, resulting in high levels of creatinine and urea. It can occur in preeclampsia due to reduced blood flow to the kidneys, but it is not a specific indicator of eclampsia.

Choice D Reason: Retinal edema is a condition where fluid leaks into the retina, causing blurred vision and flashes of light. It can occur in preeclampsia due to increased blood pressure and damage to the blood vessels in the eye, but it is not a characteristic feature of eclampsia.