Review the chart for a postoperative client receiving unfractionated heparin. Which action should the nurse take first?
Chart/Exhibit
Choose your responses, then check the answer.
Explanation
A platelet fall greater than 50 percent on day 7 with new thrombosis creates high clinical concern for HIT and requires stopping heparin and starting an authorized non-heparin anticoagulant while testing proceeds.
Quick answer Act on intermediate or high clinical probability of HIT.
Why this is correct ASH recommends the 4Ts score rather than gestalt. With an intermediate or high probability, heparin is discontinued, a non-heparin anticoagulant is started at the indicated intensity, and an immunoassay is obtained.
Easy analogy or mental picture The falling platelet count is not simply a bleeding problem; it can signal a clot-producing immune reaction.
Memory hook Day 5 to 14, platelets down, new clot: stop all heparin.
NCLEX decision rule Do not wait for every confirmatory result when the clinical probability and thrombosis risk are high.
Why the other choices are wrong Continuing or merely reducing heparin sustains the trigger, while routine platelet transfusion does not treat the prothrombotic mechanism.
References
1ASH Guideline: Heparin-Induced Thrombocytopenia4Ts assessment, stopping heparin, testing, and initiation of a non-heparin anticoagulant
HIT safety screenCalculate the 4Ts score, identify all heparin sources including flushes, assess thrombosis and bleeding, obtain ordered tests, and monitor the selected non-heparin anticoagulant.