Heart failure, atrial fibrillation or significantly enlarged heart

Long-term use of beta-blockers to treat angina pectoris and arrhythmia

essential hypertension

Long-term use of antihypertensive medications

Control respiratory infections for 1 week

Stop smoking for at least 2 weeks

acute cerebral infarction

Parkinson's disease patient

Hyperthyroidism

Primary aldosteronism and hypercortisolism

Pheochromocytoma

diabetes

Liver insufficiency

acute hepatitis

Kidney failure no longer constitutes a contraindication for elective surgery

Renal function should be improved to the greatest extent before surgery. If dialysis is required, it should be performed within 24 hours of the planned surgery.

aldult

Infants younger than 3 months

Babies older than 3 months

It is generally not recommended to discontinue medication

Need to stop taking the medicine for 2 to 3 weeks

There is no risk of bleeding at doses of 3~10mg/kg per day

It is recommended that patients who take long-term high-dose aspirin exceeding 2g per day and who do not stop taking aspirin as early as possible before surgery should have coagulation function tests to evaluate their coagulation function.

Surgery is possible after 3-4 hours

If emergency surgery is required, protamine should be used to terminate anticoagulation before surgery.

Medication needs to be stopped for 3 to 5 days before surgery

Emergency surgery, add vitamin K

Temporarily stop anticoagulation for several hours and inject 250~500ml of plasma intravenously.

Fasting from easily digestible solid foods for at least 6 hours and fasting from fatty foods for at least 8 hours

Withhold breast milk for at least 4 hours

Fasting of easily digestible solid foods, milk, formula and other non-human milk for at least 6 hours