# The anticoagulation nurse reviews a follow-up call. Which findings require immediate follow-up? Highlight the findings that indicate bleeding or unsafe warfarin use.

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> language: en  
> subject: Medication Administration  
> category: PPT

## Question

The anticoagulation nurse reviews a follow-up call. Which findings require immediate follow-up? Highlight the findings that indicate bleeding or unsafe warfarin use.

Nurses' Notes
0915:
The client takes warfarin for atrial fibrillation and calls before the scheduled clinic visit. The client reports a black, tarry bowel movement this morning without taking an iron supplement. The client eats about the same portion of leafy green vegetables each week. For knee pain, the client has taken over-the-counter ibuprofen every morning for the past four days. Warfarin is taken at 1900 each evening using a weekly medication organizer. Yesterday, the client slipped on wet stairs, struck the back of the head, and did not seek care. A soft toothbrush and electric razor are used for daily hygiene. The laboratory portal shows today's INR is 5.8, compared with a prescribed target range of 2 to 3. The client wears a medical-alert bracelet when away from home. A small forearm bruise has remained the same size for three days, is painless, and is becoming lighter. The client recalls missing Monday's dose and states, two warfarin tablets were taken together on Tuesday morning. The client denies chest pain or shortness of breath. The nurse instructs the client not to take additional medication until the urgent anticoagulation plan is confirmed.

## Explanation

Black stool, regular NSAID use, head trauma, a markedly elevated INR, and doubling a missed dose increase the risk of serious bleeding. Stable routines and protective practices support safer therapy.

## In-depth explanation

Quick answer
Follow up immediately on black tarry stool, daily ibuprofen use, a fall with a head strike, an INR of 5.8, and taking two warfarin doses together after a missed dose.

Why this is correct
Warfarin can cause serious bleeding. Melena can reflect gastrointestinal bleeding, NSAIDs add bleeding risk, head injury can hide intracranial bleeding, an excessive INR signals over-anticoagulation, and doubling a missed dose can intensify the effect.[2]

Easy analogy or mental picture
Imagine clotting as a faucet turned down by warfarin. A bleeding sign, interacting medicine, injury, high INR, or extra dose turns it down further. The picture helps identify risk, but the prescriber and laboratory plan determine the actual treatment.

Memory hook
Bleeding, NSAID, head hit, high INR, double dose: call now.

NCLEX decision rule
With anticoagulants, prioritize active bleeding, trauma, interacting drugs, unsafe dosing, and abnormal monitoring results. Do not tell the client to stop or change warfarin independently unless an authorized plan directs it.

Why the other choices are wrong
Consistent vitamin K intake, taking warfarin at the same time, using a soft toothbrush, wearing medical identification, and monitoring an unchanged small bruise are expected safety behaviors. They do not show the same immediate threat.References

- [1]NCSBN: 2026 NCLEX-RN Test PlanNational Council of State Boards of Nursing

- [2]MedlinePlus: WarfarinU.S. National Library of Medicine

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