Soap Suds Enemas & ED Management of Impactions

A recent retrospective single-center study (CE Chumpiitazi et al. JPGN 2016; 63: 15-18) identified 512 patients (8 mo-23 years) who were treated with soap suds enemas (20 mL/kg of water with one packet of castile soap).  Key findings: No serious adverse events were identified. “82% were successfully treated.”

While this large study provides a fair amount of reassurance, the associated editorial (pg 1-2) makes some key points:

  • ED diagnosis of fecal impaction is unreliable.  “Abdominal radiographs are often performed…[but] have shown unsatisfactory sensitivity and specificity.”  In this study, only 38% had reported history of constipation; thus a high number of children developed impactions without prior constipation.  Thus, either many of these children were not impacted or the history was unreliable.
  • “SSEs are likely to be very effective, but so are phosphate enemas and milk and molasses enemas that have fallen out of favor because of safety concerns.”
  • In the editorial, until prospective studies are completed, the authors advocate considering oral PEG (high-dose) or ducosate enemas, normal saline enemas, glycerin enemas, mineral oil enemas, or bisacodyl enemas.

My take: While the editorial makes some valid points, particularly making sure that treatment for an impaction is needed, I think this study provides good preliminary data on the safety of soap suds enemas.  As with all pediatric treatments, more high-quality studies would be welcome.

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