Table 6 -- Overdose situations known to cause nausea and vomiting
Drug/Toxin Management
Acetaminophen


Induced emesis/gastric lavage.
N-acetylcysteine 140 mg/kg PO, then 70 mg/kg q4h
   x 17 doses.
Follow plasma acetaminophen levels, liver functions,
   including transminases, prothrombin time.
Follow mental status.
Referral for liver transplantation if signs of liver failure.
Alkaline caustic ingestion

Ensure patent airway.
Do not induce emesis.
GI referral for prompt endoscopy.
Isopropyl alcohol

Ketosis without acidosis.
Measure isopropyl alcohol levels in plasma.
Gastric lavage, activated charcoal administration if
   patient presents within 30 minutes of ingestion.
Hemodialysis in severe cases
.
Methanol

Anion gap metabolic acidosis.
Measure methanol and ethanol levels.
Gastric lavage, charcoal administration, folinic acid
   (1 mg/kg (max 50 mg) IV, with folic acid 1 mg/kg IV
   q 4h x 6. Ethanol IV 10 mg/kg of 10% solution
   loading dose if methanol level > 20 mg/dl.
Maintenance dose tailored to achieve blood ethanol
   level of 100-150 mg/dl. Hemodialysis if methanol
   level > 50 mg/dl, severe acidosis, renal failure,
   visual symptoms.
Ethylene glycol and diethylene glycol

Severe anion gap metabolic acidosis, osmolar gap,
   oxalate and hippurate crystalluria.
Gastric lavage, charcoal administration (if within 30
   minutes of ingestion).
IV ethanol if ethylene glycol level > 20 mg/dl or if
   anion gap metabolic acidosis. Pyridoxine (100 mg
   IV qd) and thiamine (100 mg IV qd).
Hemodialysis in severe cases.
Salicylates

Respiratory alkalosis and/or anion gap metabolic
   acidosis.
Induced emesis, charcoal administration and a
   cathartic.
Alkaline diuresis for levels > 40 mg/dl -- give sodium
   bicarbonate 88 mEq in 1 liter D5W at 10-15
   ml/kg/hr until urine flow achieved.
Hemodialysis for levels > 100 mg/dl.
Beta-adrenergic antagonists

Follow serum glucose and electrolyte levels, EKG and
   continuous cardiac monitoring.
Gastric lavage/charcoal administration.
If bradycardia, atropine to 2 mg IV.
Consider cardiac pacing.
Consider Isoproterenol 2-20 ug/min.
Calcium chloride 10% 10 ml IV for refractory cases.
Digoxin

Follow digoxin levels, electrolytes.
EKG and continuous cardiac monitoring.
Induced emesis; charcoal administration.
Atropine for bradycardia.
Digoxin-immune FAB fragments for dysrythmias.
Theophylline

Induced emesis if seen within 60 minutes of ingestion.
Charcoal administration.
Monitor serum theophylline levels.