A Role for the Early Warning Score in Early Identification of Critical Postoperative Complications.

OBJECTIVE: We examined whether an early warning score (EWS) could predict inpatient complications in surgical patients. BACKGROUND: Abnormal vitals often precede in-hospital mortality. The EWS calculated using vital signs has been developed to identify patients at risk for mortality. METHODS: Inpatient general surgery procedures with National Surgical Quality Improvement Project data from 2013 to 2014 were matched with enterprise data on vital signs and neurologic status to calculate the EWS for each postoperative vital set measured on the ward. Outcomes of major complications, unplanned intensive care unit transfer, and medical emergency team activation were classified using the Clavien-Dindo system as grade I to V. Relationship with EWS and timing of complication was assessed using Kruskal-Wallis test and linear regression accounting for clustering with generalized estimating equation. RESULTS: Among 552 patients admitted to the ward postsurgery, 68 (12.3%) developed at least one grade I to III complication and 37 (6.7%) developed a grade IV/V complication. The mean maximum EWS was significantly higher preceding grade IV/V complications (10.1) compared with grade I to III complications (6.4) or across the hospital stay in patients without complications (5.4; P < 0.01). EWS significantly increased in the 3 days preceding grade IV/V complications (P < 0.001) and declined in patients without complications in the 3 days before discharge (P < 0.001). A threshold EWS of 8 predicted occurrence of grade IV/V complications with 81% sensitivity and 84% specificity. CONCLUSIONS: Critical postoperative complications can be preceded by rising EWS. Interventional studies are needed to evaluate whether EWS can reduce the severity of postoperative complications and mortality for surgical patients through early identification and intervention.

Oral corticosteroids increase esophageal acid contact times in patients with stable asthma.

STUDY OBJECTIVES: The prevalence of gastroesophageal reflux disease (GERD) is higher in people with asthma than in control populations. Predisposing factors for GERD development may include asthma medications such as prednisone. The objective of this study was to determine whether prednisone alters GERD parameters in people with asthma. DESIGN: Prospective, single-blinded, placebo-controlled, crossover study. SETTING: University medical center clinic. PARTICIPANTS: Twenty adults with stable, moderate persistent asthma with minimal esophageal reflux symptoms (less than three times a week) who were not receiving antireflux therapy. INTERVENTION: Prednisone, 60 mg/d, for 7 days. MEASUREMENTS AND RESULTS: Asthma, esophageal reflux symptoms, and spirometry were measured during baseline, placebo, and prednisone phases, each 7 days in duration. Dual-probe esophageal pH monitoring, esophageal and respiratory manometrics (20 subjects), and basal and stimulated gastric acid secretion (4 subjects) were measured after placebo and prednisone phases. There were significant increases in esophageal acid contact times at the distal and proximal pH probes during the prednisone phase. Total percentage of time that pH was < 4.0 at the distal probe was 2.5 +/- 0.4% for placebo compared with 5.9 +/- 0.9% for prednisone (p < 0.002). Total percentage of time that pH was < 4.0 at the proximal probe was 0.3 +/- 0.1% for placebo and 0.8 +/- 0.2% for prednisone (p < 0.0007). There were no significant changes in subject weight, spirometry, asthma or esophageal reflux symptoms, manometrics, or basal or stimulated gastric acid secretion. CONCLUSION: Prednisone, 60 mg/d for 7 days, increased esophageal acid contact times in this small population of people with stable asthma; however, the mechanism for this finding is unclear.