A nurse is reviewing the medical records of four clients.
The nurse should identify that which of the following client findings requires follow-up care?
A client who received a Mantoux test 48 hr ago and has an induration.
A client who is scheduled for a colonoscopy and is taking sodium phosphate.
A client who is taking bumetanide and has a potassium level of 3.6 mEq/L.
A client who is taking warfarin and has an INR of 1.8.
The Correct Answer is D
The correct answer is choice d. A client who is taking warfarin and has an INR of 1.8.
Choice A rationale:
An induration after a Mantoux test indicates a positive reaction, but it does not necessarily require immediate follow-up unless the induration is significant and the client has risk factors for tuberculosis.
Choice B rationale:
Sodium phosphate is commonly used as a bowel preparation for colonoscopy. This does not typically require follow-up unless the client experiences adverse effects such as dehydration or electrolyte imbalance.
Choice C rationale:
A potassium level of 3.6 mEq/L is within the normal range (3.5-5.0 mEq/L). Therefore, this finding does not require follow-up.
Choice D rationale:
An INR of 1.8 for a client taking warfarin is below the therapeutic range for most indications (typically 2.0-3.0). This requires follow-up to adjust the warfarin dosage to achieve the desired anticoagulation effect.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
This is because after puncturing the skin and the vein, the nurse needs to advance the catheter into the vein with the finger hub to ensure proper placement and prevent complications such as infiltration or phlebitis.
Choice A is wrong because flushing the catheter with saline should be done after securing the catheter to the skin with a transparent dressing and attaching a primed piece of extension tubing to the catheter.
Choice B is wrong because retracting the stylet should be done after advancing the catheter into the vein and releasing the tourniquet from the client’s arm.
Choice C is wrong because releasing the tourniquet should be done after advancing the catheter into the vein and before retracting the stylet.
Correct Answer is A
Explanation
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:
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