High rate of postoperative mortality in patients with mucopolysaccharidosis I: Findings from the MPS i Registry

Pamela Arn, Chester Whitley, J. Edmond Wraith, H. Warner Webb, Lisa Underhill, Lakshmi Rangachari, Gerald F. Cox

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Background/Purpose: Mucopolysaccharidosis I (MPS I) is a rare lysosomal storage disorder caused by deficiency of α-L-iduronidase, which results in progressive multisystemic disease. Patients with MPS I often require multiple common and uncommon surgeries and are at risk for surgical and anesthetic complications because of respiratory and cardiac disease. Surgery often precedes diagnosis; thus, surgeons and anesthesiologists may be unaware of potential risks. Methods: We analyzed data from the MPS I Registry, a voluntary observational database, for deaths occurring within 1 month of a surgical procedure among the 932 patients enrolled as of July 2010. Results: Among the 196 deceased patients, 186 reported 1 surgery or more, and 32 had 1 surgery or more within 1 month of death, including 20 who had 1 surgery or more within 10 days of death. Surgeries before death included hernia repair, central line placement, spinal surgery, tracheostomy, and ventriculo-peritoneal shunt. Most patients (28/32) had severe MPS I (Hurler), and 20 of 32 patients (all Hurler) died at 3 years or younger. In 6 of 32 patients, surgery was directly noted in the cause of death, including 4 patients with an attenuated form of MPS I. Conclusions: Patients with mucopolysaccharidosis have a high postoperative mortality because of underlying respiratory and cardiac diseases.

Original languageEnglish (US)
Pages (from-to)477-484
Number of pages8
JournalJournal of Pediatric Surgery
Issue number3
StatePublished - Mar 2012


  • Anesthetic complications
  • Hurler
  • Hurler-Scheie
  • Mortality
  • Mucopolysaccharidosis I
  • Scheie
  • Surgery


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