Rachs-1 system in risk stratification for congenital heart disease surgery outcome.

Citation:
Ogendo SWO, Awori MN. "Rachs-1 system in risk stratification for congenital heart disease surgery outcome.". In: East Afr Med J. 2008 Jan;85(1):36-8. Odula P.O.; 2008.

Abstract:

BACKGROUND: The Risk Adjustment in Congenital Heart Surgery (RACHS-1) system has been used as a benchmark to compare surgical results in developed countries. Its ability to stratify postoperative mortality risk has been validated in several developed countries, however, this has not been examined in a developing country. OBJECTIVES: To assess the ability of the RACHS-1 system to stratify postoperative mortality risk in a developing country. DESIGN: Retrospective study over a five year period between 1st January 2002 and 31st December 2006. SETTING: Kenyatta National Hospital, a teaching and referral hospital in Nairobi, Kenya. SUBJECTS: Three hundred and seventeen consecutive operations were performed on 313 patients aged between 0.25 and 204 months. RESULTS: Operations were performed in RACHS-1 categories 1, 2, 3 and 4 with hospital mortalities of 2.5%, 16.9%, 29.4% and 50% respectively. The difference in mortality between categories 1 and 2 was significant (p-value of 0.0003), however, the difference in mortality between categories 2 and 3 and categories 3 and 4 was not significant (p-values 0.193 and 0.67 respectively). CONCLUSIONS: The RACHS-1 system did not adequately stratify risk in a low case load setting. The use of the RACHS-1 method as a benchmark to compare surgical results of paediatric cardiac surgery services in developing countries may be limited.

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