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.

Answer and Explanation

The Correct Answer is A

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.

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Correct Answer is D

Explanation

This is because humidification can help moisten the oral mucosa and reduce the discomfort of xerostomia. Xerostomia is a condition of dry mouth caused by reduced or absent saliva flow, which can occur after radiation therapy to the head and neck area.
Choice A is wrong because rinsing the mouth with an alcohol-based mouthwash can irritate the oral tissues and worsen xerostomia. Alcohol can also dehydrate the mouth and reduce saliva production.
Choice B is wrong because esophageal speech is a method of voice restoration after laryngectomy, not a treatment for xerostomia.
Esophageal speech involves swallowing air into the esophagus and releasing it to create sound.
It has nothing to do with saliva flow or dry mouth.
Choice C is wrong because saltine crackers are dry and hard to swallow without adequate saliva.
They can also scratch the oral mucosa and cause pain or bleeding. Offering the client saltine crackers between meals can aggravate xerostomia and increase the risk of choking.
Normal ranges for saliva flow vary depending on the method of measurement, but generally, a stimulated saliva flow rate of less than 0.7 mL/min or an unstimulated saliva flow rate of less than 0.1 mL/min is considered indicative of xerostomia.

A. Apply cold packs directly on the skin of the affected joints. B. Administer biological response modifiers to prevent infection. C. Take a hot shower in the morning to decrease stiffness. D. Cluster physical activities during the day.

Correct Answer is C

Explanation

. Taking a hot shower in the morning can help decrease stiffness and improve joint mobility for people with rheumatoid arthritis. This is one of the self-management strategies that can reduce pain and disability.

Choice A is wrong because applying cold packs directly on the skin of the affected joints can cause vasoconstriction and increase inflammation.

Cold therapy should be used with caution and with a barrier between the skin and the ice pack.

Choice B is wrong because biological response modifiers are not used to prevent infection, but to reduce inflammation and slow down joint damage in rheumatoid arthritis.

These medications can actually increase the risk of infection by suppressing the immune system.

Choice D is wrong because clustering physical activities during the day can cause fatigue and joint stress for people with rheumatoid arthritis.

It is better to pace activities throughout the day and take frequent breaks to rest the joints.

Normal ranges for rheumatoid arthritis are based on the disease activity score (DAS), which measures the number of swollen and tender joints, the level of inflammation in the blood, and the patient’s global assessment of health. A DAS below 2.6 indicates remission, a DAS between 2.6 and 3.2 indicates low disease activity, a DAS between 3.2 and 5.1 indicates moderate disease activity, and a DAS above 5.1 indicates high disease activity.

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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?

Nursing Test Bank

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Correct Answer is D

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Correct Answer is C

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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?