RESUMO
The demand for improvement in healthcare delivery has been increasing. Thus, a standardized method allows quality assessment of data and its comparison between various institutions over time. Many attempts have been made to classify surgical complications before 1990; however, none of those attempts gained popularity and acceptance. Clavien and his colleagues started the wave by explaining negative outcomes on the basis of complications, failure to cure, and sequelae. Complications were primarily defined as "any deviation from the normal postoperative course". Since then, many such classification systems and grading systems have been introduced and studied for analyzing the post-operative complications. The purpose of this study was to review the revolution in the classification systems for surgical complications, its validation, and to analyze the results of various qualitative indicators for post-operative complications obtained by using these classification systems. A global set of keywords were built such as "grading of surgical complications", "abdominal surgery", "classification of surgical complications", and the "Clavien Dindo Classification". A literature review was done using PubMed, Medline, and Google Scholar. A list of reference articles concerning the literature on classification systems for surgical complications was manually analyzed from the year 1992 and the data was summarized.
