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Decreases preload by vasodilation effect in less than 5 minutes
Inhibits electrolyte reabsorption in the distal loop of henle, and promotes the excretion of sodium, potassium, hydrogen, magnesium, and chloride to decrease circulating blood volume by it's diuretic effect within 5-30 minutes
Anuria, Hypersensitivity, hypovolemia/dehydration, states of severe electrolyte depletions, known hypersensitivity to sulfonamides
CNS: Dizziness, Headache, Tinnitus, Vertigo
Cardio: Arrhythmias, Hypotension
GI: Diarrhea, nausea, vomiting
Other: Hypovolemia, hypokalemia, hyponatremia, metabolic acidosis
Digitalis toxicity may be potentiated due to potassium depletion, which can result from furosemide administration
Lithium toxicity may be potentiated due to sodium depletion
Not taking lasix: 40-80 mg
Taking lasix: 20-40 mg
May repeat p.r.n. to a maximum of 2 mg/kg. Do not exceed 20 mg/min
1 mg/kg slowly. May repeat p.r.n. to a maximum of 2 mg/kg
Note: Usually not given to pediatrics in prehospital setting
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