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# Sodium Phosphate Enema
## Overview
Sodium phosphate enema is a hypertonic saline solution used as a stimulant laxative for bowel cleansing prior to procedures or for constipation.
## Primary Indications
* Bowel preparation for diagnostic or surgical procedures.
* Relief of occasional constipation.
## Adult Dosing
* **Bowel Preparation:** Typically, one 4.5-ounce (133 mL) bottle administered as a single dose, 3 to 5 hours prior to the procedure. Some protocols may recommend a second dose.
* **Constipation:** One 2.25-ounce (66 mL) bottle administered as a single dose.
## Pediatric Dosing
* **Ages 5-11 years:** 2.25 ounces (66 mL) administered as a single dose.
* **Under 5 years:** Use is generally not recommended due to increased risk of toxicity. Consult with a pediatrician for alternative options.
## Dose Adjustments
No dose adjustments are typically required for hepatic or renal impairment, but caution is advised due to the risk of electrolyte imbalances.
## Contraindications
* Congestive heart failure.
* Recent myocardial infarction.
* Ascites.
* Intestinal obstruction.
* Congenital megacolon.
* Renal failure.
* Acute bowel obstruction.
* Children under 2 years of age.
* Patients with impaired renal function.
* Patients with conditions that increase the risk of electrolyte imbalance or fluid retention.
## Adverse Effects
* **Common:** Abdominal cramping, bloating, nausea, vomiting, diarrhea.
* **Serious:** Hyperphosphatemia, hypocalcemia, hypernatremia, dehydration, renal tubular damage, cardiac arrhythmias, seizures.
## Key Drug Interactions
* **Diuretics, ACE inhibitors, ARBs, NSAIDs:** Increased risk of hyperphosphatemia and dehydration.
* **Drugs affecting renal function:** May increase the risk of renal toxicity.
## Monitoring
* Monitor for signs and symptoms of dehydration (e.g., dry mouth, decreased urine output, dizziness).
* Monitor for signs of electrolyte imbalance (e.g., muscle cramps, weakness, confusion, arrhythmias).
* Renal function (serum creatinine) and electrolytes (sodium, potassium, phosphate, calcium) may be considered, especially in patients with underlying risk factors.
## Clinical Pearls
* Use with caution in elderly patients and those with renal impairment due to increased risk of electrolyte abnormalities.
* Instruct patients to hydrate well with clear liquids before and after administration.
* Do not use if rectal bleeding is present or if the patient is unable to retain the enema.
* Rapid administration can lead to cramping.
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*This information is intended for healthcare professionals. Always consult the most current prescribing information and relevant clinical guidelines before use.*
