Supplementary tables: Postoperative outcomes and anesthesia type in total knee arthroplasty in patients with obstructive sleep apnea

These are peer-reviewed supplementary materials for the article 'Postoperative outcomes and anesthesia type in total knee arthroplasty in patients with obstructive sleep apnea' published in the Journal of Comparative Effectiveness Research.Supplementary Table 1: Definition of International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes for general postoperative complications.Supplementary Table 2: Definition of International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) codes for general postoperative complications.Aim: We investigated the relationship between obstructive sleep apnea (OSA), 30/90-day readmission rates and perioperative complications (postoperative cardiovascular, gastrointestinal, infectious or intraoperative complications) in patients undergoing total knee arthroplasty. Materials & methods: We analyzed records of patients who underwent total knee arthroplasty using State Inpatient Databases. Demographics, comorbidities, 30/90-day readmission rates and complications were compared by OSA status. For NY, USA we analyzed outcomes by anesthetic type (regional vs general). Results: OSA patients were mostly male, had more comorbidities and had increased 30/90-day readmission rates. There were no differences in complications. In NY, there were no differences in outcomes by anesthetic type. Conclusion: OSA was associated with increased 30/90-day readmission rates. Within NY, anesthetic type was not associated with any outcomes.</p

Postoperative outcomes and anesthesia type in total knee arthroplasty in patients with obstructive sleep apnea: Supplementary tables 1 & 2

Plain language summary: By analyzing records of patients who underwent total knee replacement, we investigated the relationship between obstructive sleep apnea (OSA), rates of readmission to the hospital at 30 and 90 days after surgery and perioperative complications (postoperative cardiovascular, gastrointestinal, infectious or intraoperative complication). In the NY, USA population, we analyzed outcomes based on anesthetic type (regional vs general anesthesia). We found that OSA patients were mostly male, had more medical conditions and had increased rates of 30 and 90-day readmission. There were no differences in complications. In NY, there were no differences in outcomes by anesthetic type. In conclusion, OSA was associated with increased rates of readmission to the hospital at 30 and 90 days after surgery. Within NYS, anesthetic type was not associated with any outcomes.</p

Efficacy of parasternal peripheral nerve catheters <i>versus</i> no block for median sternotomy: A single-centre retrospective study

Background: Sternal pain after cardiac surgery results in considerable discomfort. Single-injection parasternal fascial plane blocks have been shown to reduce pain scores and opioid consumption during the first 24 h after surgery, but the efficacy of continuous infusion has not been evaluated. This retrospective cohort study examined the effect of a continuous infusion of local anaesthetic through parasternal catheters on the integrated Pain Intensity and Opioid Consumption (PIOC) score up to 72 h. Methods: We performed a retrospective analysis of patients undergoing cardiac surgery with median sternotomy at a single academic centre before and after the addition of parasternal nerve catheters to a standard multimodal analgesic protocol. Outcomes included PIOC score, total opioid consumption in oral morphine equivalents, and time-weighted area under the curve pain scores up to 72 h after surgery. Results: Continuous infusion of ropivacaine 0.1% through parasternal catheters resulted in a significant reduction in PIOC scores at 24 h (−62, 95% confidence interval −108 to −16; P Conclusions: This study suggests that continuous infusion of local anaesthetic through parasternal catheters may be a useful addition to a multimodal analgesic protocol in patients undergoing cardiac surgery with sternotomy. Further prospective study is warranted to determine the full benefits of continuous infusion compared with single injection or no block.</p