AMMONIUM CHLORIDE (ah-mo'ni-um) Classifications: electrolytic balance and water balance agents Pregnancy Category: B
|
26.75% or 5 mEq/mL solution; 500 mg tablets; 486 mg enteric-coated tablets
Acidifying property is due to conversion of ammonium ion (NH4+) to urea in liver with liberation of H+ and Cl. Potassium excretion also increases acid, but to a lesser extent. Tolerance to diuretic effect occurs within 23 d.
Systemic acidifier in metabolic alkalosis by releasing H+ ions which lower pH.
Treatment of hypochloremic states and metabolic alkalosis. Diuretic or urinary acidifying agent.
Severe renal or hepatic insufficiency; primary respiratory acidosis. Safety during pregnancy (category B) or lactation is
not established.
Cardiac edema, pulmonary insufficiency.
Urine Acidifier, Diuretic Adult: PO 412 g/d divided q46h Child: PO 75 mg/kg/d in 4 divided doses
Metabolic Alkalosis and Hypochloremic States Adult/Child: IV Dose calculated on basis of CO2 combining power or serum Cl deficit, 50% of calculated deficit is administered slowly
|
Oral
- Give after meals for best tolerance or use enteric-coated tablets. Tablets should be swallowed whole.
- Store in airtight container.
Intravenous
- Check with physician for slower rate for infants.
PREPARE: Intermittent: Dilute each 20 ml vial in 500 mL NS. Do not exceed a concentration of 12%.
ADMINISTER: Intermittent: Give slowly to avoid serious adverse effects (ammonia toxicity) and local irritation and pain. Give at a rate not to exceed
5 mL/min.
INCOMPATIBILITIES Solution/additive:
Codeine phosphate,
levorphanol,
methadone,
nitrofurantoin,
warfarin.
|
- Avoid freezing.
- Concentrated solutions crystallize at low temperatures.
- Crystals can be dissolved by placing intact container in a warm water bath and warming to room temperature.
Body as a Whole: Most secondary to ammonia toxicity. CNS: Headache, depression, drowsiness, twitching, excitability; EEG abnormalities. CV: Bradycardia and other arrhythmias. GI: Gastric irritation, nausea, vomiting, anorexia. Metabolic: Metabolic acidosis, hyperammonia. Skin: Rash. Respiratory: Hyperventilation. Skin: Rash. Urogenital: Glycosuria Other: Pain and irritation at IV site.
Ammonium chloride may increase blood ammonia and AST, decrease serum magnesium (by increasing urinary magnesium excretion), and decrease urine urobilinogen.
Drug:
Aminosalicylic acid may cause crystalluria; increases urinary excretion of amphetamines, flecainide,
mexiletine,
methadone,
ephedrine,
pseudoephedrine; decreased urinary excretion of sulfonylureas, salicylates.
Absorption: Completely absorbed in 36 h. Metabolism: Metabolized in liver to HCl and urea. Elimination: Primarily excreted in urine.
Assessment & Drug Effects
- Assess IV infusion site frequently for signs of irritation. Change site as warranted.
- Monitor for S&S of: metabolic acidosis (mental status changes including confusion, disorientation, coma, respiratory changes
including increased respiratory rate and depth, exertional dyspnea); ammonium toxicity (cardiac arrhythmias including bradycardia,
irregular respirations, twitching, seizures).
- Monitor I&O ratio and pattern. The diuretic effect of ammonium chloride is compensatory and lasts only 12 d.
- Lab tests: Baseline and periodic determinations of CO2 combining power, serum electrolytes, and urinary and arterial pH during therapy to avoid serious acidosis.
Patient & Family Education
- Report pain at IV injection site.
- Do not breast feed while taking this drug without consulting physician.