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 D
Explanation
Provide humidification of the room air. 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 mouth wash 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.
Correct Answer is ["C","F"]
Explanation
Answer is… C and F indicate improvement.
A The client has gained 1.8 kg (4 lb). BMI is 18.9. This is not an improvement because the client’s BMI is still below the normal range of 18.5 to 24.9 The client may have malnutrition or other health problems that affect their weight.
B The clients adult child prepares two meals per day for the client. This is not an improvement because it shows that the client still depends on others for their basic needs and may have difficulty with self-care.
C The clients clothing is clean and appropriate for the weather. This is an improvement because it shows that the client has good hygiene and can dress themselves appropriately.
D The client receives three baths per week from a home care aide. This is not an improvement because it shows that the client still needs assistance with bathing and may have limited mobility or pain.
E The client reports frequent toothaches and lack of dental care. This is not an improvement because it shows that the client has poor oral health and may have infections or other complications.
F The client makes eye contact and smiles when speaking. This is an improvement because it shows that the client has positive mood and social interaction.
: https://www.hopkinsmedicine.org/health/conditions-and-diseases/distal-radius-fracture- wrist-fracture : https://www.nhlbi.nih.gov/health/educational/lose_wt/BMI/bmicalc.htm.
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