A nurse is reporting a client’s laboratory tests to the provider to obtain a prescription for the client’s daily warfarin.
Which of the following laboratory tests should the nurse plan to report to obtain the prescription for the warfarin?
INR
Fibrinogen level
aPTT
Platelet count
The Correct Answer is A
The correct answer is choice A. INR.
Warfarin is a vitamin K antagonist that inhibits the synthesis of factors II, VII, IX, and X in the liver.
These factors are part of the extrinsic and common pathways of coagulation, which are measured by the prothrombin time (PT) and the international normalized ratio (INR).
The INR is a standardized way of reporting the PT that accounts for the variability of different reagents and instruments.
The INR is used to monitor the therapeutic effect of warfarin and to adjust the dose accordingly.
The target INR range depends on the indication for warfarin, but it is usually between 2 and 3 for most conditions.
Choice B is wrong because fibrinogen level is not affected by warfarin.
Fibrinogen is a precursor of fibrin, which forms the final step of the coagulation cascade.
Fibrinogen level can be decreased in conditions such as disseminated intravascular coagulation (DIC), liver disease, or severe bleeding. Choice C is wrong because aPTT is not affected by warfarin.
aPTT measures the intrinsic and common pathways of coagulation, which are mainly dependent on factors VIII, IX, XI, and XII.
These factors are not inhibited by warfarin.
aPTT is used to monitor the effect of heparin, a direct antithrombin agent that inhibits thrombin and factor Xa.
Choice D is wrong because platelet count is not affected by warfarin.
Platelets are cell fragments that adhere to damaged blood vessels and form aggregates to initiate hemostasis.
Platelet count can be decreased in conditions such as immune thrombocytopenia (ITP), heparin-induced thrombocytopenia (HIT), or bone marrow suppression.
Normal ranges:
- INR: 0.8-1.2
- Fibrinogen: 200-400 mg/dL
- aPTT: 25-35 seconds
- Platelet count: 150-450 x 10^9/L References:
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The correct answer is B.
Assist the adolescent in applying for Medicaid.
This action demonstrates the nurse’s role as an advocate and a resource person for the client, who might be eligible for financial assistance and health care coverage during her pregnancy and postpartum period. Medicaid is a federal and state program that provides health insurance for low-income individuals and families.
Choice A is wrong because contacting the adolescent’s parent for assistance might violate the client’s confidentiality and autonomy, especially if the parent is not aware of or supportive of the pregnancy. The nurse should respect the client’s right to privacy and self-determination, unless there is a risk of harm to the client or the fetus.
Choice C is wrong because referring the adolescent to a local mental health clinic might imply that the client has a mental disorder or needs psychological counseling, which could be stigmatizing and discouraging.
The nurse should assess the client’s emotional state and coping skills, and provide supportive and nonjudgmental care. The nurse can also offer referrals to other community resources, such as prenatal education, parenting classes, or social services, that might benefit the client.
Choice D is wrong because advising the adolescent to place the newborn for adoption might interfere with the client’s decision-making process and personal values.
The nurse should not impose his or her own opinions or beliefs on the client, but rather explore the client’s feelings and preferences about her pregnancy options. The nurse should provide factual information and education about adoption, abortion, or parenting, and help the client weigh the benefits and risks of each option.
Correct Answer is A
Explanation
The correct answer is choice A. A client who is ambulatory and receiving oxygen should be evacuated first during a fire because they are at risk of fire and explosion from the oxygen source. The nurse should instruct the staff to turn off the oxygen supply, remove the oxygen device from the client, and assist them to walk out of the building using the nearest exit.
Choice B is wrong because a client who uses a wheelchair and is confused is not in immediate danger from the fire. They can be evacuated using a swing carry or an extremity carry by two staff members after the clients who are more vulnerable are evacuated.
Choice C is wrong because a client who is bedridden and wears a hearing aid is not in immediate danger from the fire. They can be evacuated using a cradle drop by one staff member after the clients who are more vulnerable are evacuated.
Choice D is wrong because a client who has a fracture and is in balance suspension traction is not in immediate danger from the fire. They can be evacuated using a special device such as a sked or a sled by two or more staff members after the clients who are more vulnerable are evacuated.
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