A client being treated with sodium warfarin has a prothrombin time of 120 seconds. Which intervention would be most important to include in the nursing care plan?

Appeared in: DHS Staff Nurse - 2018 (Shift-2nd)

Explanation

A prothrombin time (PT) of 120 seconds is a critical value, far exceeding the normal range of 11-13 seconds and the typical therapeutic range of 18-30 seconds for warfarin therapy.
This extreme elevation indicates severe over-anticoagulation, placing the client at an immediate and high risk for spontaneous, life-threatening hemorrhage.
The nursing priority, based on patient safety principles, is to immediately assess for the most significant potential complication, which is abnormal bleeding.
Early detection of bleeding (e.g., hematuria, melena, ecchymosis, changes in vital signs) allows for prompt intervention to prevent catastrophic outcomes.

Option B: Increasing the warfarin dose would exacerbate the over-anticoagulation and could be fatal. The correct action is to withhold the medication.
Option C: Patient education is not the priority during an acute crisis. Immediate physiological safety and assessment take precedence over teaching.
Option D: While assessing for intracranial bleeding via neurological checks is important, it is only one component of a full bleeding assessment. The priority is a comprehensive assessment for bleeding from all potential sites (GI, GU, skin, etc.).

Clinical Relevance

Nursing practice connection: Knowing Management of Anticoagulant Therapy helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Nurses play a critical role in monitoring laboratory values for clients on high-risk medications like warfarin.
Recognizing a critical lab value, such as a PT of 120 seconds, requires immediate action: holding the medication, assessing the patient, and notifying the provider promptly.
Failure to act on critical lab values can lead to severe adverse events, including fatal hemorrhage. This is a core patient safety responsibility.

How to Approach the Question

First, identify the key clinical information provided in the question: the client is taking warfarin, and their prothrombin time (PT) is 120 seconds.
Next, recall the normal and therapeutic ranges for PT. A normal PT is about 11-13 seconds. A therapeutic level on warfarin is higher, but 120 seconds is clearly far above any therapeutic goal.
Recognize that a PT of 120 seconds is a critical, life-threatening value.
Determine the primary risk associated with a critically high PT, which is severe, spontaneous bleeding.
Evaluate the options based on patient safety and the nursing process (Assess, Diagnose, Plan, Implement, Evaluate). The highest priority is always an assessment that addresses the most immediate life-threatening risk.
Select the option that involves assessing for the primary complication (bleeding), as this is the most crucial first step in managing the situation.

Concept Tested & Keywords

Concept Tested: Management of Anticoagulant Therapy
Stem keywords: sodium warfarin, prothrombin time, 120 seconds, nursing care plan
Lead-in keywords: most important
Clinical cues: Prothrombin time of 120 seconds: This is a critical lab value, indicating severe over-anticoagulation and a high risk of hemorrhage.

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E6 Pharmacology Nursing Lilley 11e Part 2 p. 125-127

E6 Medicine Harrison 22e Part 1 p. 993-995

Practise the full DHS Staff Nurse - 2018 (Shift-2nd)

Attempt every question from this paper in a timed mock, then review the full solution for each one.