Aspirin around surgery is a common, important topic because it affects bleeding risk. Here’s a concise overview, but please check with your surgeon and, if relevant, your cardiologist for advice tailored to you.
Key ideas
- Why it matters: Aspirin irreversibly inhibits platelets, which can increase bleeding during and after surgery. Platelet function starts to recover only after new platelets are made (about 7–10 days after the last aspirin pill).
- Elective (planned) surgery: Most people on low-dose aspirin (often 81 mg daily) are advised to stop it about 5–7 days before the procedure to reduce bleeding risk. Higher doses (e.g., 325 mg daily) may require a longer hold or more individualized planning.
- High thrombotic risk: If you recently had a heart attack, stent placement, or have other high cardiovascular risk, your doctor may weigh stopping aspirin against the risk of a clot. In some cases they may continue aspirin and adjust the plan for bleeding, or delay surgery if possible.
- Minor procedures: Some minor procedures (certain dental work, some eye surgeries) may allow continuation or only a brief hold; this is highly procedure-dependent.
- After surgery: Most surgeons resume aspirin once there’s reliable hemostasis (bleeding is controlled). For minor surgeries, this might be 12–24 hours after. For major surgeries, it’s often 24–72 hours, depending on bleeding risk and the team’s judgment. If you’re still at high risk for clotting, they may restart earlier under supervision.
- NSAIDs and drug interactions: Taking other NSAIDs (like ibuprofen) close to aspirin can interfere with its effect. Avoid unnecessary NSAIDs around the time of surgery if possible, and follow your doctor’s instructions.
What to do next
- Tell your medical team everything you’re taking (dose of aspirin, whether there’s another antiplatelet or anticoagulant, nonsteroidal NSAIDs, supplements).
- Ask: Is it necessary to stop aspirin before my specific surgery? If yes, for how long? Should I continue or pause any other meds?
- If you have a recent stent or high cardiovascular risk, discuss the plan with both your surgeon and cardiologist.
- On the day of surgery, bring your medication list and confirm timing with the anesthesia team.
If you’d like, tell me:
- What type of surgery (minor dental work vs. abdominal surgery, etc.) and whether you’re on low-dose or higher-dose aspirin.
- Whether you’ve had a recent heart attack or stent placement.
- Whether you’re also taking another antiplatelet (like clopidogrel) or an anticoagulant.
I can tailor the guidance more specifically. Remember, tailor-made planning should come from your surgical team and cardiologist.