PMID: 29771899May 18, 2018Paper

Excess cost and inpatient stay of treating deep spinal surgical site infections

The New Zealand Medical Journal
James BarnacleNigel Raymond

Abstract

To determine the excess cost and hospitalisation associated with surgical site infections (SSI) following spinal operations in a New Zealand setting. We identified inpatients treated for deep SSI following primary or revision spinal surgery at a regional tertiary spinal centre between 2009 and 2016. Excess cost and excess length of stay (LOS) were calculated via a clinical costing system using procedure-matched controls. Twenty-eight patients were identified. Twenty-five had metalware following spinal fusion surgery, while three had non-instrumented decompression and/or discectomy. Five were diagnosed during their index hospitalisation and 23 (82%) were re-admitted. The average excess SSI cost was NZ$51,434 (range $1,398-$262,206.16) and LOS 37.1 days (range 7-275 days). Infections following metalware procedures had a greater excess cost (average $56,258.90 vs. $11,228.61) and LOS (average 40.4 days vs. 9.7 days) than procedures without metalware. The costs associated with spinal SSI are significant and comparable to a previous New Zealand study of hip and knee prosthesis SSI. More awareness of the high costs involved should encourage research and implementation of infection prevention strategies.

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