Patient selection: adult with primary total hip arthroplasty
Outcome: readmission within 30 days
Preoperative factors associated with readmission:
(1) body mass index (BMI) >= 40 kg per square meter
(2) therapy with corticosteroids
(3) low serum albumin
(4) >= 3 comorbidities
where:
• The serum albumin levels for not readmitted and readmitted groups overlap. A concentration less than 3.9 g/dL will be used in the implementation.
• Comorbidities included: diabetes, COPD, history of corticosteroid therapy, bleeding disorder, history of cardiac surgery, hypertension, dyspnea, and preoperative blood transfusion.
Postoperative events associated with increased risk for readmission
(1) surgical site infection (SSI)
(2) thromboembolic event (pulmonary embolism, deep vein thrombosis)
(3) sepsis
