A client with a history of heart failure arrives at the emergency department describing an onset of fatigue and weakness.

The client has been taking spironolactone 50 mg tablets PO every day.

The nurse receives a report from the lab that the client has a serum potassium level of 6.2 mEq/L (6.2 mmol/L). Which intervention is most important for the nurse to implement?

Choice A rationale

Inquiring about the frequency of falls in recent months is an important part of a functional assessment for an older adult patient reporting decreased strength in knees and handgrips. Falls can be a sign of decreased muscle strength and balance, which can be associated with aging and certain medical conditions.

Choice B rationale

Sundowning, or increased confusion and agitation in the late afternoon and evening, is a symptom often associated with dementia, not necessarily with decreased strength in knees and handgrips.

Choice C rationale

While discussing end-of-life care options is an important aspect of comprehensive patient care, it is not directly related to the patient’s reported symptoms of decreased strength.

Choice D rationale

Requesting the patient to lie as still as possible for the assessment may not provide comprehensive information about the patient’s functional mobility and strength.

Choice A rationale

Heparin is an anticoagulant medication that prevents the formation of blood clots. One of the most common and serious side effects of heparin therapy is bleeding. Therefore, it is crucial for the nurse to observe for signs of bleeding, such as bruising, petechiae, hematomas, black tarry stools, hematuria, and changes in mental status. Regular laboratory monitoring of the client’s coagulation status, specifically the activated partial thromboplastin time (aPTT), is also necessary to ensure therapeutic levels of heparin without causing excessive bleeding.

Choice B rationale

While mobilization can help prevent the formation of new clots, it is not the most important intervention for a client who is already on a heparin protocol for DVT. Mobilization can potentially dislodge the existing clot, leading to a life-threatening pulmonary embolism.

Choice C rationale

Although it is important to monitor vital signs in all clients, assessing blood pressure and heart rate every 4 hours is not the most important intervention for a client on a heparin protocol.

Changes in blood pressure and heart rate are not specific to heparin therapy and do not provide direct information about the effectiveness or side effects of the medication.

Choice D rationale

Measuring each calf’s girth can help evaluate the progression of edema in the affected leg, but it is not the most important intervention for a client on a heparin protocol. While it can provide information about the local effects of the DVT, it does not address the systemic anticoagulation effects of heparin therapy.