A nurse is caring for a client who is pregnant and Rh-negative. The nurse should plan to monitor which of the following maternal laboratory test results to determine maternal-fetal blood incompatibility?
Homocysteine.
Indirect Coombs.
Erythropoietin.
aPTT.
The Correct Answer is B
The indirect Coombs test is used to detect antibodies against foreign red blood cells in the maternal serum. This test can help identify maternal-fetal blood incompatibility, which can cause hemolytic disease of the newborn.
Choice A is wrong because homocysteine is a type of amino acid and is not related to blood compatibility.
Choice C is incorrect because erythropoietin is a hormone that regulates red blood cell production and is not a specific test for detecting maternal-fetal blood incompatibility.
Choice D is not the correct answer as aPTT (activated partial thromboplastin time) is a test used to evaluate blood clotting factors and is not directly related to monitoring maternal-fetal blood incompatibility.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Coughing while eating after a stroke may be caused by dysphagia, a swallowing disorder that can lead to aspiration, pneumonia and infection. A speech-language pathologist can assess and treat dysphagia and help the client improve their swallowing function.
Choice B is wrong because fine motor tremors are not related to speech or language problems.
They may be caused by damage to the cerebellum or basal ganglia, parts of the brain that control movement and coordination.
Choice C is wrong because facial flushing is not related to speech or language problems.
It may be caused by high blood pressure, fever, anxiety or other conditions.
Choice D is wrong because urinary incontinence is not related to speech or language problems.
It may be caused by damage to the spinal cord, bladder, pelvic floor muscles or nerves that control urination.
Correct Answer is C
Explanation
The nurse should explain that the injection is administered in order to prevent vitamin K deficiency bleeding (VKDB) in the newborn. Vitamin K is needed for blood clotting, but newborn babies have very low levels of vitamin K in their bodies at birth because only small amounts of the vitamin pass through the placenta and breast milk. VKDB can cause life-threatening bleeding in various parts of the body, such as the brain, intestines, or skin. VKDB can be classified into early-onset, classic, or late- onset depending on the time of presentation after birth. The most effective way to prevent VKDB is to give a single intramuscular dose of 0.5 to 1 mg of vitamin K to all newborn infants within 6 hours of birth.
Choice A is wrong because sepsis is not caused by vitamin K deficiency, but by bacterial infection.
Choice B is wrong because tachypnea is not caused by vitamin K deficiency, but by respiratory distress or other conditions.
Choice D is wrong because jaundice is not caused by vitamin K deficiency, but by high levels of bilirubin in the blood.
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