To address specific methodological concerns regarding the definition of sepsis in a study on SGLT2 inhibitors and sepsis-induced cardiomyopathy, particularly the implications of using broad ICD-10 codes.
Key Findings:
The incidence of sepsis-induced cardiomyopathy in the study was lower than expected (~1-2%) compared to prior studies (~20%), raising questions about the accuracy of sepsis classification.
Subgroup analyses indicated many patients may not have met clinical criteria for sepsis, suggesting a need for more precise definitions.
Interpretation:
The misclassification of infections as sepsis threatens the internal validity of the study's findings and may mislead readers about the population studied, necessitating a reevaluation of the definitions used.
Limitations:
Equating any infection with sepsis is an overgeneralization that could mislead readers about the population studied and the applicability of the results.
Real-world database studies face challenges in accurately defining complex syndromes like sepsis, including variations in coding practices and clinical criteria.
Conclusion:
The authors should clarify the limitations of their sepsis definition and consider re-analyzing data using validated sepsis algorithms, such as the Angus criteria adapted for ICD-10 or explicit R65.x codes with organ dysfunction proxies, to enhance credibility.
