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Froedtert & the ӰԺ Endocrine Surgery - Medication Guidelines Prior to Surgery

Cardiac medications (blood pressure medications): DO NOT take on the day of surgery:

  • Benazepril (Lotensin)
  • Bumetanide (Bumex)
  • Candesartan (Atacand)
  • Captopril (Capoten)
  • Enalapril (Vasotec)
  • Eprosartan (Teveten)
  • Fosinopril (Monopril)
  • Furosemide (Lasix)
  • Hydrochlorothiazide (HCTZ)
  • Iosartan (Cozaar, Hyzaar)
  • Irbesartan (Avapro)
  • Lisinopril (Prinivil, Zestril)
  • Metolazone (Zaroxolyn)
  • Olmesartan (Benicar)
  • Perindopril (Aceon)
  • Quinapril (Accupril)
  • Ramipril (Altace)
  • Spironolactone (Aldactone)
  • Telmisartan (Micardis)
  • Valsartan (Diovan)

Blood thinners: Please make sure you have discussed this with your physician or surgeon before stopping these medications.

  • Aspirin – Stop taking 7 days before surgery
  • Coumadin – Stop taking 5 days before surgery
  • Heparin – Must be held for 12 hours prior to surgery
  • Antiplatelet agents (Plavix, clopidogrel, ticlopidine) – Please follow your surgeon or cardiologist’s recommendations.

Diabetes medications:
Insulin – Patient with insulin pumps:

  • Continue your basal rate ONLY

Patients without insulin pumps: 
On the morning of surgery:

  • Hold short acting insulin
  • Pre-mixed insulin (eg. 70/30): give 1/3 of usual dose
  • Lantus: give usual dose

Oral diabetic medications: do not take the morning of surgery

  • Metformin
  • Glyburide
  • Glipizide

Other prescription medications:

  • MAO inhibitors – do not take the day of surgery
  • Premarin – do not take on the day of surgery
  • Viagra or similar drugs – do not take 24 hours before surgery

Over-the-counter medications:

  • Aspirin – stop taking 7 days before surgery
  • NSAIDS (ibuprofen, Aleve, naproxen, Celebrex) – stop taking 7 days before surgery
  • Iron – do not take on the day of surgery
  • Herbal supplements and Vitamin E-containing multivitamins – stop taking 7 days prior to surgery