A nurse is reviewing the medical record of a client who experienced a vaginal birth 2 hr ago. The nurse should identify which of the following findings places the client at risk for a postpartum hemorrhage.
Gestational hypertension
Small for gestational age newborn
Two-vessel umbilical cord
Precipitous birth
The Correct Answer is D
Precipitous birth
This is because precipitous birth, which is defined as a labor that lasts less than three hours from the onset of contractions to delivery, is a risk factor for postpartum hemorrhage. This is because the uterus may not contract well after a rapid delivery, leading to uterine atony and bleeding. Other risk factors for postpartum hemorrhage include uterine overdistension, oxytocin use, placental abruption, placenta previa, infection, coagulation disorders, and previous history of postpartum hemorrhage.
Choice A is not correct because gestational hypertension is not a risk factor for postpartum hemorrhage. It is a condition that causes high blood pressure during pregnancy and can lead to complications such as preeclampsia, eclampsia, and placental abruption³.
Choice B is not correct because small for gestational age newborn is not a risk factor for postpartum hemorrhage. It is a condition that indicates that the baby's growth was restricted in the womb and weighs less than 90% of other babies of the same gestational age. It can be caused by maternal factors, placental factors, or fetal factors⁴.
Choice C is not correct because a two-vessel umbilical cord is not a risk factor for postpartum hemorrhage. It is a condition that occurs when the umbilical cord has only one artery and one vein instead of the normal two arteries and one vein. It can be associated with congenital anomalies, intrauterine growth restriction, and stillbirth.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The foramen ovale closes, preventing blood exchange from right to left in the heart. This is because the foramen ovale is a fetal shunt that allows blood to bypass the lungs and flow from the right atrium to the left atrium. After birth, when the baby starts to breathe air, the lungs expand and the pulmonary resistance decreases. This causes an increase in blood flow and pressure in the left atrium, which pushes the foramen ovale closed. This prevents blood from mixing between the right and left sides of the heart and allows oxygenated blood to circulate to the body¹².
Choice A is not correct because the ductus arteriosus does not expand to allow more blood to enter the lungs. The ductus arteriosus is another fetal shunt that
connects the pulmonary artery to the aorta. It allows blood to bypass the lungs and flow from the right ventricle to the aorta. After birth, when the baby starts to breathe air, the oxygen concentration in the blood increases and causes the ductus arteriosus to constrict and close. This increases blood flow to the lungs and decreases blood flow to the aorta.
Choice C is not correct because the umbilical vein that carried oxygenated blood in utero does not become the ascending aorta entering the right atrium. The umbilical vein is a fetal vessel that carries oxygenated blood from the placenta to the fetus. It connects to either the portal vein or the ductus venosus, which then drains into the inferior vena cava. After birth, when the umbilical cord is clamped and cut, the umbilical vein collapses and becomes a fibrous cord called ligamentum teres hepatis.
Choice D is not correct because the ductus venosus does not shunt oxygenated aortic blood to the lungs. The ductus venosus is another fetal vessel that connects the umbilical vein to the inferior vena cava. It allows some of the oxygenated blood from the placenta to bypass the liver and enter directly into the systemic circulation. After birth, when the umbilical cord is clamped and cut, the ductus venosus closes and becomes a fibrous cord called ligamentum venosum.
Correct Answer is C
Explanation
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.
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