Avaliação do desempenho do sistema de informações hospitalares (SIH-SUS) na identificação dos casos de near miss materno
The aim of this study is to evaluate the performance of the Hospital Information System (SIH) of Brazilian National Health Service in identifying cases of maternal near miss in a tertiary hospital in the city of Rio de Janeiro, during the year of 2008. The identification of such cases was done through evaluation of the medical records of patients who presented with potential life-threatening conditions. The cases were selected after revision of the discharge summaries of those patients; this process is considered gold-standard. The second phase of the study consisted in the scrutiny of the information in the SIH-SUS, through a nominal search of the maternal near miss cases identified from the revision of medical records and selection of the Hospital Admittance Forms (AIH) which the fields “primary diagnosis”, “secondary diagnosis” and/or “performed procedure” presented data compatible with such grievance, thus evaluating the diagnostic properties of the SIH. After evaluation of 1.170 hospital chart summaries, 228 cases were selected for a full chart revision. After revision of the information in the medical charts 165 cases of severe maternal morbidity were identified, among which 8 resulted in maternal death, 130 were cases of severe maternal morbidity not classified as near miss, and 27 were effectively considered maternal near miss cases. In the initial evaluation of the SIH performance through the nominal search of women identified as near miss, it was detected that only 16 (59. 2%) cases were in the database. Regarding the absence of the other 11 (40.7%) remaining cases, it was detected that at least 4 (36.3%) of them resulted from the non-billing of the procedures because the hospital’s cesarean-section percentage limit had been exceeded. An analysis of the diagnostic properties of the SIH showed a 18,5% sensibility (95%CI = 6.3 – 38.1), 7.14% positive predictive value (95%IC = 2.36-15.9), 94.3% specificity (95%CI = 92.8 – 95.6) and area under the ROC curve of 0.56 (95%CI = 0.48 – 0.63). At a first look, considering the results obtained,the SIH does not seem to be a good tool for surveillance of maternal near miss.