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RACHS - l SYSTEM IN RISK STRATIFICATION FOR CONGENITAL HEART DISEASE SURGERY OUTCOME
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 (pvalues 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.
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 (pvalues 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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