[Reliability index of anorectal manometry for the diagnosis of Hirschspurng disease].

UNLABELLED

The anorectal manometry (AM) and suction rectal biopsy (BS) are the main and accepted methods for diagnosis of Hirschsprung disease (HD). The reliability of these methods in newborns have been subject of controversy up to the present.

MATERIAL AND METHODS

For diagnosis of HD purpose we have performed 2227 AM records in 1744 children. Initially we used a minichamber type probe joined to a close system to perform AM. From 1984 we developed a new type of 4 ways miniprobe connected to an open system which improved the reliability of the records.

RESULTS

The indexes of reliability for our database have been the following: sensitivity 98%, specificity 97%, positive predictive value 85%, negative predictive value 99%, false positive 3.4% and false negative 1.8%.

CONCLUSIONS

AM is a non invasive method with a high reliability, available in our hospital. It is a choice method for diagnosis of HD.