A nurse is assessing a client who is taking haloperidol and is experiencing pseudoparkinsonism.

Which of the following findings should the nurse document as a manifestation of pseudoparkinsonism?

Choice A option

Fibrinogen level: Fibrinogen is a protein involved in the blood clotting process, but in this case, it is not appropriate because is not the primary laboratory test used to monitor warfarin therapy. Monitoring fibrinogen levels is more relevant in assessing bleeding disorders or certain medical conditions.

Choice B option

PTT (Partial Thromboplastin Time): PTT is another laboratory test used to evaluate blood clotting function, particularly the intrinsic pathway of the clotting cascade. PTT is not routinely used to monitor warfarin therapy; it is more commonly used to monitor other anticoagulant medications like heparin.

Choice C option

The nurse should plan to report the client's INR (International Normalized Ratio) to obtain a prescription for the client's daily warfarin. INR is a critical laboratory test used to monitor the effectiveness and safety of warfarin therapy.

Warfarin is an anticoagulant medication commonly prescribed to prevent and treat blood clots. It works by interfering with the body's ability to use vitamin K to form blood clots. Monitoring the INR is essential because it indicates how long it takes for the blood to clot, and it helps determine if the client's warfarin dosage needs adjustment to achieve the desired level of anticoagulation.

Choice D option

Platelet count: Platelet count is essential to assess the number of platelets in the blood, which are crucial for normal clotting. However, platelet count monitoring is not the primary focus when prescribing warfarin. It is typically used to evaluate thrombocytopenia (low platelet count) or other conditions affecting platelet function.

The correct answer is choiced. 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.