To prevent possible retinopathy in a preterm infant requiring oxygen therapy, the nurse will:
Keep the infant's eyes covered at all times.
Position with the head slightly lower than the body.
Administer low concentrations of oxygen.
Monitor arterial oxygen levels with a pulse oximeter.
The Correct Answer is C
Administer low concentrations of oxygen. Retinopathy of prematurity (ROP) is a disease of retinal vascular and capillary proliferation affecting premature infants undergoing oxygen therapy. Oxygen treatment results in pathologic growth of vessels in the developing retina that may lead to permanent damage to the retina as well as retinal detachment and macular folds. Administering low concentrations of oxygen can help prevent ROP by reducing the oxygen-induced vasoconstriction and vascular endothelial growth factor (VEGF) expression.
Choice A is not correct because keeping the infant's eyes covered at all times does not prevent ROP. In fact, it may increase the risk of infection or injury to the eyes.
Choice B is not correct because positioning with the head slightly lower than the body does not prevent ROP. It may increase the intracranial pressure and affect the cerebral blood flow.
Choice D is not correct because monitoring arterial oxygen levels with a pulse oximeter does not prevent ROP. It is a useful tool to guide oxygen therapy, but it does not directly affect retinal vascular development.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Massage the client’s fundus. This is because the most common cause of postpartum hemorrhage is uterine atony, which is the failure of the uterus to contract after delivery. Massaging the fundus can stimulate uterine contractions and reduce bleeding by compressing the blood vessels at the placental site.
Choice A is not correct because administering oxytocin is not the first action to take. Oxytocin is a medication that can also help the uterus contract, but it should be given after assessing the uterine tone and bleeding.
Choice B is not correct because observing for pooling of blood under the buttocks is not a priority action. It can help estimate the amount of blood loss, but it does not address the cause of bleeding or stop it.
Choice C is not correct because checking the client’s blood pressure is not the first action to take. Blood pressure can indicate hypovolemia due to blood loss, but it is not a sensitive indicator and may remain normal until a significant amount of blood is lost.
Correct Answer is D
Explanation
This is because lochia rubra is the first stage of lochia, the vaginal discharge after giving birth. It comprises blood, shreds of fetal membranes, decidua, vernix caseosa, lanugo, and membranes. It is red in color because of the large amount of blood it contains. It lasts 1 to 4 days after birth.
Choice A is not correct because lochia alba is the last stage of lochia. It is whitish or yellowish-white in color and contains fewer red blood cells and more leukocytes, epithelial cells, cholesterol, fat, mucus, and microorganisms. It lasts from the second through the third to sixth weeks after delivery.
Choice B is not correct because there is no such thing as lochia normal. Lochia has three stages: lochia rubra, lochia serosa and lochia alba.
Choice C is not correct because lochia serosa is the second stage of lochia. It is brownish or pink in color and contains serous exudate, erythrocytes, leukocytes, cervical mucus, and microorganisms. It lasts for 4 to 12 days after delivery.
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