Costs and utility of post-discharge acute inpatient rehabilitation following adult spinal deformity surgery - PubMed (original) (raw)

Costs and utility of post-discharge acute inpatient rehabilitation following adult spinal deformity surgery

Alekos A Theologis et al. Spine Deform. 2021 May.

Abstract

Purpose: Evaluate costs and functional utility of post-discharge rehabilitation after surgery for adult spinal deformity (ASD).

Methods: Retrospective analysis of ASD patients who underwent operation at a single center and discharged to one rehabilitation facility. Operative details and costs were obtained for index inpatient encounter. Rehabilitation data included: direct costs, length of stay, and patient function, as assessed by Functional Independence Measure (FIM) instrument.

Results: Of 937 operations, 391 (41.7%) were discharged to rehabilitation. Ninety-patients (9.6%; 95 care episodes; average age 70.5 ± 10.6 years) were discharged to rehabilitation. Inpatient length of stay was 8.2 ± 2.6 days. Operative details: posterior levels fused 13.6 ± 3.6, PCOs/patient 7 ± 3.7, forty-two 3-column osteotomies, and 11 inter-body fusions. Direct costs were 90,738±90,738 ± 90,738±24,166 for index hospitalizations and 38,808±38,808 ± 38,808±14,752 for rehabilitation. Patients spent 11.7 ± 4.0 days in rehabilitation. Direct cost per day in hospital ($11,758 ± 3390)wassignificantlygreaterthanrehabilitation(3390) was significantly greater than rehabilitation (3390)wassignificantlygreaterthanrehabilitation(3338 ± 2131)(p<0.05).Significantimprovementsinfunctionwhileinrehabilitationwereobserved(admitFIM:66±14vs.dischargeFIM:94±14).CharlsonComorbidityIndexwastheonlyindependentpredictorofrehabilitationdirectcosts.ConclusionPost−dischargeinpatientrehabilitationfollowingoperationsforASDisassociatedwithadirectcostof2131) (p < 0.05). Significant improvements in function while in rehabilitation were observed (admit FIM: 66 ± 14 vs. discharge FIM: 94 ± 14). Charlson Comorbidity Index was the only independent predictor of rehabilitation direct costs. Conclusion Post-discharge inpatient rehabilitation following operations for ASD is associated with a direct cost of 2131)(p<0.05).Significantimprovementsinfunctionwhileinrehabilitationwereobserved(admitFIM:66±14vs.dischargeFIM:94±14).CharlsonComorbidityIndexwastheonlyindependentpredictorofrehabilitationdirectcosts.ConclusionPost−dischargeinpatientrehabilitationfollowingoperationsforASDisassociatedwithadirectcostof38,808 per case. While rehabilitation resulted in significant functional improvements, it came at significant economic expense ($3.7 million) that accounted for 30% of costs for 95 episodes of care. For 100 operatively treated patients (assuming 41% discharge rate to rehab), rehabilitation results in an additional price premium of $1,674,872.

Keywords: Acute rehabilitation; Adult spinal deformity; Cost; Discharge.

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