On the day of surgery we can give which drug’s when pt is npo ?

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drugs to continue on day of surgery NPO patient anesthesia guidelines 2024

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https://www.froedtert.com/sites/default/files/upload/docs/pr…

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I now have comprehensive information from Miller's Anesthesia and clinical guidelines. Here is a detailed answer:

Drugs to CONTINUE on Day of Surgery (NPO Patient)

The key principle is: take with a small sip of water (15-30 mL). The goal is to avoid rebound effects, hemodynamic instability, or withdrawal while the patient is fasting.

✅ CONTINUE (Give on the Morning of Surgery)

Drug ClassExamplesReason
Beta-blockersMetoprolol, atenolol, carvedilolPrevent rebound tachycardia/hypertension; abrupt withdrawal can trigger MI
Calcium channel blockersAmlodipine, diltiazem, verapamilHemodynamic stability
Alpha-2 agonistsClonidine, methyldopaAvoid rebound hypertensive crisis
Alpha-1 blockersTamsulosin, doxazosinHemodynamic stability
AntiarrhythmicsAmiodarone, digoxin, sotalolContinuous rhythm control needed
Nitrates/VasodilatorsNitroglycerin, isosorbide, hydralazineCardiac protection
StatinsAtorvastatin, rosuvastatinPleiotropic cardioprotective effect; abrupt withdrawal harmful
Aspirin (cardiac indications)Low-dose aspirinContinue if history of CAD/stents; stop only for neuro/ophthalmic/spine surgery
Antiepileptics (AEDs)Levetiracetam, valproate, phenytoinPrevent perioperative seizures; IV alternatives available
Antiparkinson drugsLevodopa/carbidopa, entacaponeAbrupt withdrawal risks NMS-like syndrome; give up to time of surgery
AntipsychoticsHaloperidol, risperidone, olanzapinePrevent psychosis and agitation postop
Anxiolytics/BenzodiazepinesAlprazolam, clonazepam, lorazepamPrevents anxiety and withdrawal; also used as premeds
Inhaled bronchodilatorsSalbutamol, ipratropium, tiotropium, salmeterolReduces perioperative bronchospasm and pulmonary complications
Inhaled corticosteroidsFluticasone, budesonideReduces airway reactivity
Systemic steroidsPrednisoloneAvoid adrenal insufficiency; give stress-dose steroids if on long-term use
Thyroid medicationsLevothyroxineLong half-life (7 days), but continue for stability
AntiretroviralsTenofovir, efavirenz, lamivudineResistance develops quickly with missed doses
AntiviralsAcyclovir, valacyclovirContinue for immunosuppressed patients
Long-acting opioidsMS Contin, oxycontin (in chronic pain patients)Prevent acute withdrawal; for major surgery, convert to IV background infusion if NPO >8 hrs (Miller's Anesthesia, 10e, Box 47.2)
Ophthalmic dropsPilocarpine, timolol eye dropsContinue (absorbed minimally, topical use)
ImmunosuppressantsTacrolimus, cyclosporine (transplant patients)Transplant rejection risk; check levels
Non-biologic DMARDsMethotrexate, hydroxychloroquine, sulfasalazineGenerally continue (rheumatoid arthritis, IBD)

❌ HOLD / WITHHOLD on Day of Surgery

Drug ClassReason
ACE inhibitors / ARBsRisk of refractory intraoperative hypotension; hold morning dose (unless heart failure or uncontrolled HTN)
Diuretics (furosemide, HCTZ)Risk of hypovolemia and hypokalemia
MetforminRisk of lactic acidosis, especially if contrast used or prolonged NPO
SGLT-2 inhibitors (empagliflozin, dapagliflozin)Risk of euglycemic DKA; hold 3-4 days before
InsulinAdjust - give reduced dose (50-75% of basal); hold prandial doses
Sulfonylureas (glipizide, glibenclamide)Risk of hypoglycemia while NPO
Oral hypoglycemics (most)Hold; resume when eating
NSAIDsTypically hold 24-72 hrs preop (bleeding risk, AKI risk)
Biologic DMARDs (adalimumab, etanercept, infliximab)Infection risk, impaired wound healing; hold for one dosing cycle
JAK inhibitors (tofacitinib, baricitinib)Hold ≥3 days prior
Oral anticoagulants (warfarin, rivaroxaban, apixaban, dabigatran)Bleeding risk; managed per bridging protocols
MAOIsDrug interactions with anesthetics; consult anesthesia
GLP-1 agonists (semaglutide, liraglutide)Delayed gastric emptying, increased aspiration risk; hold 1 week prior
Estrogen/HRTThromboembolism risk; stop ~4 weeks before major surgery
BisphosphonatesRoutinely held day of surgery

Special Notes

  • Insulin: Never hold completely in Type 1 DM. Give 50-75% of basal insulin; hold all prandial (bolus) doses. Monitor glucose every 1-2 hours.
  • Steroids: Patients on long-term steroids (>5 mg prednisolone/day for >3 weeks) need stress-dose hydrocortisone (50-100 mg IV) to prevent adrenal crisis.
  • Antiparkinson drugs: Critical to give right up to surgery. Even a few missed doses can cause neuroleptic malignant syndrome-like withdrawal. (Perioperative Medication Management, VMFH)
  • All oral medications on the day of surgery should be given with a sip of water (≤30 mL) - this does NOT violate NPO status. (Miller's Anesthesia, 10e)

Memory aid (CONTINUE = "BASS CAB + Steroids + AEDs + Parkinson"):
  • B - Beta-blockers
  • A - Antiarrhythmics / Alpha agonists
  • S - Statins
  • S - Steroids (stress dose)
  • C - Calcium channel blockers
  • A - Antiepileptics / Antiparkinson
  • B - Bronchodilators (inhaled)

What about cilastozol and sodium bicarbonate?

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cilostazol hold before surgery perioperative antiplatelet guidelines

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sodium bicarbonate premedication day of surgery NPO aspiration prophylaxis anesthesia

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I have enough information from the guidelines and textbooks to give a thorough answer. Here it is:

Cilostazol and Sodium Bicarbonate on Day of Surgery


Cilostazol (Pletal) - ❌ HOLD / Do NOT Give on Day of Surgery

What it is: A selective PDE-3 (phosphodiesterase III) inhibitor - acts as a reversible antiplatelet agent and vasodilator. Used for peripheral arterial disease (intermittent claudication) and stroke prevention. (Sabiston Textbook of Surgery)
Perioperative management:
Guideline SourceRecommendation
Froedtert / Most US guidelinesHold at least 5 days before surgery
NHS Scotland / UK guidelinesHold 7 days before surgery
Chesapeake Regional guidelinesHold 4 days preop
UKCPA HandbookManufacturer recommends 5-day cessation; for ophthalmology, 3 days may be sufficient (t½ = 10.5-13 hrs)
Why hold it?
  • Reversible antiplatelet activity - increases bleeding risk
  • For neuraxial anesthesia (spinal/epidural): cilostazol must be stopped minimum 2 days before catheter insertion; next dose can only be given ≥5 hours after block or catheter removal
  • Claudication symptoms may temporarily return when stopped, but will respond once restarted post-op
Bottom line: Cilostazol is NOT given on the day of surgery. It should have been stopped 5-7 days before.

Sodium Bicarbonate - ✅ GIVEN on Day of Surgery (as a Premedication)

What it is: A non-particulate antacid. It is NOT the patient's regular medication - rather, it is deliberately administered on the day of surgery as part of aspiration prophylaxis.
Why it is given preoperatively:
  • Neutralizes gastric acid, raising gastric pH to >2.5
  • Reduces the severity of Mendelson's syndrome (aspiration pneumonitis) if aspiration occurs
  • It is a clear liquid - does not increase gastric volume and does not violate NPO rules
When is it used?
  • Patients at high risk of aspiration - full stomach, emergency surgery, obstetric patients, morbid obesity, GERD, hiatus hernia, gastroparesis, difficult airway
  • Given orally 15-30 minutes before induction of anesthesia
Sodium bicarbonate vs Sodium citrate:
  • The more commonly used preparation is 0.3M sodium citrate (Bicitra/Citrotein) - but sodium bicarbonate solution serves the same purpose
  • Both are non-particulate antacids and are safe to give despite NPO status because they are clear liquids that actually protect against aspiration pneumonitis
Standard aspiration prophylaxis regimen (commonly used together):
  1. Sodium bicarbonate / sodium citrate (30 mL orally) - 15-30 min preop
  2. Ranitidine or Omeprazole (H2 blocker / PPI) - given night before + morning of surgery
  3. Metoclopramide - prokinetic, empties stomach, raises LES tone
Bottom line: Sodium bicarbonate is GIVEN on the day of surgery - it is a premedication for aspiration prophylaxis, not a regular drug that gets "continued." It does not violate NPO guidelines since it is a clear liquid antacid.

Calprotectin and pro calcitonin

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