The Annals of thoracic surgery
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Policymakers have proposed risk-adjusted bundled payment as the single most promising method of linking reimbursement to value rather than to quantity of service. Our objective was to assess the relationship between risk and cost to develop a model for forecasting the costs of cardiac operations under a bundled payment scheme. ⋯ Even among the most routine cardiac operations and with use of the most widely validated surgical risk score available, much of the variation in costs cannot be explained by preoperative risk or surgeon. Consequently, policymakers should reexamine whether individual practices or insurers are best suited to manage the residual financial risk.
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Acute kidney injury (AKI) continues to complicate cardiac operations. We sought to determine whether nadir oxygen delivery (DO2) on cardiopulmonary bypass (CPB) was a risk factor for AKI while also accounting for other postoperative factors. ⋯ Postoperative hypotension on POD0 or POD1 and low DO2 on CPB both independently increase the AKI risk in cardiac surgical patients.