Perioperative Management of Antiplatelet Therapy

Introduction to Antiplatelet Therapy Management

Approximately 10-14% of normal platelet function is restored for each day after clopidogrel interruption as new, unaffected platelets are produced, according to the American College of Chest Physicians 1
After 5 days of clopidogrel discontinuation, roughly 50-70% of platelets will have normal function, which is generally sufficient for surgical hemostasis, as recommended by the American College of Chest Physicians 1
After 7 days, approximately 70-100% of platelet function is restored, allowing for safer surgical procedures, as stated by the American College of Chest Physicians 1

The American College of Chest Physicians recommends clopidogrel discontinuation 5 days before surgery 2, 3, 4
The American College of Chest Physicians suggests ticagrelor discontinuation 3-5 days before surgery due to its reversible binding 2, 5, 6
The American College of Chest Physicians advises prasugrel discontinuation 7 days before surgery due to its more potent platelet inhibition 2, 5

The American College of Chest Physicians recommends continuing aspirin perioperatively for most procedures and only stopping it ≤7 days before surgery if interruption is necessary 2
Aspirin discontinuation is only required for surgeries in confined spaces, such as intracranial, spinal canal, or posterior eye chamber, where even minor bleeding is catastrophic, as stated by the American Society of Anesthesiologists 3, 4

The risk of perioperative myocardial infarction and stent thrombosis from stopping antiplatelet therapy is higher than the risk of surgical bleeding from continuing it, except in closed-space surgeries, according to the European Heart Journal 5
The American College of Chest Physicians recommends continuing DAPT for coronary stents placed within the last 6-12 weeks, or stopping only the P2Y12 inhibitor 7-10 days before surgery 2
The European Heart Journal suggests considering continued DAPT or minimizing interruption for recent myocardial infarction (within 3 months) 5

The American College of Chest Physicians recommends continuing antiplatelet therapy for minor dental, dermatologic, and ophthalmologic procedures 2, 7
The American Society of Anesthesiologists suggests that very low bleeding-risk procedures can proceed without stopping DAPT 3, 4
The American College of Chest Physicians advises stopping aspirin 5 days and P2Y12 inhibitors 5-7 days before intracranial neurosurgery, spinal surgery in the medullary canal, or posterior chamber eye surgery 3, 4

The American College of Chest Physicians recommends resuming antiplatelet drugs within 24 hours after surgery to minimize thrombotic risk 2, 5, 7
The American College of Chest Physicians suggests resuming antiplatelet therapy as soon as hemostasis is achieved, typically within 24 hours, unless post-operative thrombocytopenia develops 2, 8
A loading dose of clopidogrel (300-600 mg) can achieve maximal effect within 12-15 hours if rapid antiplatelet effect is needed, according to the American College of Chest Physicians 1

The American College of Chest Physicians recommends not routinely using platelet function testing to guide perioperative management, as it is not recommended and does not improve outcomes 2, 8, 10
The American College of Chest Physicians advises not using bridging therapy with glycoprotein IIb/IIIa inhibitors, cangrelor, or LMWH routinely, except for highly selected high-risk patients 7
The European Heart Journal recommends not stopping DAPT within the first month after stent placement for elective surgery, as this is explicitly not recommended 5