A 65-year-old client is starting low-dose aspirin 81 mg oral… | MyMerci
Medical EmergenciesPA
Question
A 65-year-old client is starting low-dose aspirin 81 mg orally daily for secondary prevention after a recent myocardial infarction. Which statement by the client demonstrates correct understanding?
1I should crush enteric-coated aspirin tablets to make them work faster.
2I will take aspirin once daily with food, report black/tarry stool or unusual bruising, avoid OTC NSAIDs except acetaminophen unless approved, and not give aspirin to my grandchildren due to Reye syndrome risk.✓ Correct answer
3I will combine aspirin with ibuprofen 400 mg twice daily for stronger anti-inflammatory effect.
4I can stop aspirin if my chest pain improves because the heart attack is treated.
Explanation
Low-dose aspirin (cardioprotective) Aspirin irreversibly inhibits COX-1 in platelets, reducing thromboxane A2 and platelet aggregation for the lifespan of the platelet (~7-10 days).
Key teaching: • Once daily with food to reduce GI irritation; enteric-coated formulations are sometimes used but not always more protective. • Bleeding signs: black/tarry stool (melena), bright red blood per rectum, hemoptysis, gum bleeding, persistent or unusual bruising, severe headache (potential ICH). • Avoid concurrent NSAIDs (ibuprofen, naproxen) — they competitively block aspirin binding to COX-1, reducing cardioprotective effect AND increasing GI bleed risk; acetaminophen is the safer analgesic. • Reye syndrome: do NOT give aspirin to children/teens with viral illness (chickenpox, flu) — risk of fatal hepato-encephalopathy. • Do not stop aspirin without provider decision after MI/stent — chronic secondary-prevention indication. • Enteric-coated tablets must NOT be crushed/chewed — defeats the coating; chewable aspirin is OK. • Allergy: cross-reactivity with NSAIDs and rarely with sulfa.
In-depth explanation
Clinical reasoning summary Low-dose aspirin (cardioprotective) Aspirin irreversibly inhibits COX-1 in platelets, reducing thromboxane A2 and platelet aggregation for the lifespan of the platelet (~7-10 days).
Key teaching: • Once daily with food to reduce GI irritation; enteric-coated formulations are sometimes used but not always more protective. • Bleeding signs: black/tarry stool (melena), bright red blood per rectum, hemoptysis, gum bleeding, persistent or unusual bruising, severe headache (potential ICH). • Avoid concurrent NSAIDs (ibuprofen, naproxen) — they competitively block aspirin binding to COX-1, reducing cardioprotective effect AND increasing GI bleed risk; acetaminophen is the safer analgesic. • Reye syndrome: do NOT give aspirin to children/teens with viral illness (chickenpox, flu) — risk of fatal hepato-encephalopathy. • Do not stop aspirin without provider decision after MI/stent — chronic secondary-prevention indication. • Enteric-coated tablets must NOT be crushed/chewed — defeats the coating; chewable aspirin is OK. • Allergy: cross-reactivity with NSAIDs and rarely with sulfa.