Understanding the Drivers of Cost and Length of Stay in a Cohort of 21,875 Severe Burn Patients.

Burn management has significantly advanced in the past 75 years, resulting in improved mortality rates. However, there are still over one million burn victims in the US each year, with over 3,000 burn-related deaths annually. The impacts of individual patient, hospital, and regional demographics on length of stay (LOS) and total cost have yet to be fully explored in a large nationally representative cohort. Thus, this study aimed to examine various hospital and patient characteristics using a sample of over 20,000 patients. Inpatient data from the National Inpatient Sample (NIS) from 2008-2015 was analyzed, and only patients with an ICD-9 code for second or third-degree burns were included. Additionally, a major operating room procedure must have been indicated on the discharge summary for patients to be included in the final dataset, ensuring that only severe burns requiring complex care were analyzed. Analysis of Covariance (ANCOVA) models were used to evaluate the impact of various patient, hospital, and regional variables on both LOS and cost. The study found that skin grafts and fasciotomy significantly increased the cost of hospitalization. Having burns on the face, neck, and trunk significantly increased costs for patients with second-degree burns, while burns on the trunk resulted in the longest LOS for patients with third-degree burns. Infections in the hospital and additional procedures, such as flaps and skin grafts, also led to longer stays. The study also found that the prevalence of post-operative complications, such as electrolyte imbalance, was high among burn surgery patients.