Bleeding gums, hematuria, black stools, or a drop in platelets — hold and notify provider
Before you read
Test yourself first: 5 questions
Question 1 of 5
A client receiving heparin therapy has a sudden drop in platelet count from 250,000 to 80,000/microL. The nurse suspects heparin-induced thrombocytopenia. What is the priority action?
Answer: A. Heparin-induced thrombocytopenia (HIT) is an immune reaction that drops platelets and paradoxically causes thrombosis. The priority is to discontinue all heparin (including flushes) and notify the provider; a non-heparin anticoagulant such as argatroban is typically started. Giving more heparin, a platelet transfusion, or simply continuing therapy would worsen the dangerous clotting and is contraindicated.
Question 2 of 5
A client receiving heparin develops a platelet count drop to 60,000/mm3 and a new clot. The nurse suspects heparin-induced thrombocytopenia. Which is the priority nursing action?
Answer: B. Heparin-induced thrombocytopenia is a serious immune reaction; the priority is to discontinue all heparin immediately and notify the provider so a nonheparin anticoagulant can be started. Continuing heparin or giving protamine alone is inappropriate.
Question 3 of 5
A client receiving heparin therapy has a platelet count that drops from 250,000/mm3 to 90,000/mm3 over three days. Which complication should the nurse suspect?
Answer: A. A platelet count falling by 50 percent or more after heparin exposure suggests heparin-induced thrombocytopenia (HIT), an immune-mediated reaction that paradoxically increases clotting risk. Heparin must be stopped immediately. This is not an expected response, a sign of fluid overload, or hemolytic anemia.
Question 4 of 5
A client received heparin during surgery and now has active bleeding. Which medication does the nurse anticipate administering to reverse the heparin?
Answer: A. Protamine sulfate is the antidote that neutralizes the anticoagulant effect of heparin. It binds heparin to form an inactive complex and is used when significant bleeding occurs. Vitamin K reverses warfarin, not heparin.
Question 5 of 5
A client receiving IV heparin develops active bleeding. Which medication should the nurse anticipate administering as the antidote?
Answer: B. Protamine sulfate is the specific antidote for heparin and binds heparin to neutralize its anticoagulant effect. Vitamin K (phytonadione) reverses warfarin. Aminocaproic acid is used for fibrinolytic bleeding, and idarucizumab reverses dabigatran, not heparin.
Keep the streak going with more questions like these, each with a full rationale.
What is heparin therapy?
It works mainly by boosting antithrombin, which inactivates thrombin and factor Xa. Unfractionated heparin is given IV or SubQ and monitored with the aPTT (or anti-Xa level); low-molecular-weight heparins such as enoxaparin are given SubQ and usually need no routine monitoring. The antidote is protamine sulfate.
Key points to remember
- Monitor aPTT — therapeutic is 1.5–2.5 times the control
- Antidote: protamine sulfate
- Watch for HIT (heparin-induced thrombocytopenia) — a falling platelet count
- Give SubQ in the abdomen; do not aspirate or massage the site
- Uses: treatment and prevention of DVT and pulmonary embolism, acute coronary syndrome, and bridging until warfarin is therapeutic.
- HIT usually appears 5–10 days after starting heparin, with a platelet drop of 50% or more and new clotting; stop all heparin, including flushes, and notify the provider.
- Heparin is a high-alert medication: IV infusions run on a pump with an independent double-check per policy.
Nursing priorities
- Check aPTT and platelet counts; assess for any signs of bleeding
- Keep protamine sulfate available as the reversal agent
- Use bleeding precautions: electric razor, soft toothbrush, no IM injections
- Verify the dose and concentration with a second nurse and adjust the rate only per protocol and the latest aPTT or anti-Xa result.
Labs & values
Patient teaching
- Report unusual bruising or bleeding; use a soft toothbrush and electric razor
- Tell every provider and dentist that you take a blood thinner, and avoid aspirin and NSAIDs unless prescribed.
- Enoxaparin at home: inject into the abdomen at least 2 inches from the navel, do not expel the air bubble in a prefilled syringe, and do not rub the site.
Red flags: report now
- Bleeding gums, hematuria, black stools, or a drop in platelets — hold and notify provider
- aPTT above therapeutic range increases hemorrhage risk
- Signs of internal bleeding — back or flank pain, falling blood pressure, rising heart rate, headache or a change in consciousness — need immediate escalation.
References
Clinical references for this topic
