BACKGROUND:Five percent of adult patients undergoing noncardiac inpatient surgery experience a major pulmonary complication. The authors hypothesized that the choice of neuromuscular blockade ...reversal (neostigmine vs. sugammadex) may be associated with a lower incidence of major pulmonary complications.
METHODS:Twelve U.S. Multicenter Perioperative Outcomes Group hospitals were included in a multicenter observational matched-cohort study of surgical cases between January 2014 and August 2018. Adult patients undergoing elective inpatient noncardiac surgical procedures with general anesthesia and endotracheal intubation receiving a nondepolarizing neuromuscular blockade agent and reversal were included. Exact matching criteria included institution, sex, age, comorbidities, obesity, surgical procedure type, and neuromuscular blockade agent (rocuronium vs. vecuronium). Other preoperative and intraoperative factors were compared and adjusted in the case of residual imbalance. The composite primary outcome was major postoperative pulmonary complications, defined as pneumonia, respiratory failure, or other pulmonary complications (including pneumonitis; pulmonary congestion; iatrogenic pulmonary embolism, infarction, or pneumothorax). Secondary outcomes focused on the components of pneumonia and respiratory failure.
RESULTS:Of 30,026 patients receiving sugammadex, 22,856 were matched to 22,856 patients receiving neostigmine. Out of 45,712 patients studied, 1,892 (4.1%) were diagnosed with the composite primary outcome (3.5% sugammadex vs. 4.8% neostigmine). A total of 796 (1.7%) patients had pneumonia (1.3% vs. 2.2%), and 582 (1.3%) respiratory failure (0.8% vs. 1.7%). In multivariable analysis, sugammadex administration was associated with a 30% reduced risk of pulmonary complications (adjusted odds ratio, 0.70; 95% CI, 0.63 to 0.77), 47% reduced risk of pneumonia (adjusted odds ratio, 0.53; 95% CI, 0.44 to 0.62), and 55% reduced risk of respiratory failure (adjusted odds ratio, 0.45; 95% CI, 0.37 to 0.56), compared to neostigmine.
CONCLUSIONS:Among a generalizable cohort of adult patients undergoing inpatient surgery at U.S. hospitals, the use of sugammadex was associated with a clinically and statistically significant lower incidence of major pulmonary complications.
IMPORTANCE: Postoperative delirium occurs in 10% to 60% of elderly patients having major surgery and is associated with longer hospital stays, increased hospital costs, and 1-year mortality. Emerging ...literature suggests that dexmedetomidine sedation in critical care units is associated with reduced incidence of delirium. However, intraoperative use of dexmedetomidine for prevention of delirium has not been well studied. OBJECTIVE: To evaluate whether an intraoperative infusion of dexmedetomidine reduces postoperative delirium. DESIGN, SETTING, AND PARTICIPANTS: This study was a multicenter, double-blind, randomized, placebo-controlled trial that randomly assigned patients to dexmedetomidine or saline placebo infused during surgery and for 2 hours in the recovery room. Patients were assessed daily for postoperative delirium (primary outcome) and secondarily for postoperative cognitive decline. Participants were elderly (>68 years) patients undergoing major elective noncardiac surgery. The study dates were February 2008 to May 2014. INTERVENTIONS: Dexmedetomidine infusion (0.5 µg/kg/h) during surgery and up to 2 hours in the recovery room. MAIN OUTCOMES AND MEASURES: The primary hypothesis tested was that intraoperative dexmedetomidine administration would reduce postoperative delirium. Secondarily, the study examined the correlation between dexmedetomidine use and postoperative cognitive change. RESULTS: In total, 404 patients were randomized; 390 completed in-hospital delirium assessments (median interquartile range age, 74.0 71.0-78.0 years; 51.3% 200 of 390 female). There was no difference in postoperative delirium between the dexmedetomidine and placebo groups (12.2% 23 of 189 vs 11.4% 23 of 201, P = .94). After adjustment for age and educational level, there was no difference in the postoperative cognitive performance between treatment groups at 3 months and 6 months. Adverse events were comparably distributed in the treatment groups. CONCLUSIONS AND RELEVANCE: Intraoperative dexmedetomidine does not prevent postoperative delirium. The reduction in delirium previously demonstrated in numerous surgical intensive care unit studies was not observed, which underscores the importance of timing when administering the drug to prevent delirium. TRIAL REGISTRATION: clinicaltrials.gov Identifier NCT00561678
IMPORTANCE: Recent studies have investigated the effect of overlapping surgeon responsibilities or nurse to patient staffing ratios on patient outcomes, but the association of overlapping ...anesthesiologist responsibilities with patient outcomes remains unexplored to our knowledge. OBJECTIVE: To examine the association between different levels of anesthesiologist staffing ratios and surgical patient morbidity and mortality. DESIGN, SETTING, AND PARTICIPANTS: A retrospective, matched cohort study consisting of major noncardiac inpatient surgical procedures performed from January 1, 2010, to October 31, 2017, was conducted in 23 US academic and private hospitals. A total of 866 453 adult patients (aged ≥18 years) undergoing major inpatient surgery within the Multicenter Perioperative Outcomes Group electronic health record registry were included. Anesthesiologist sign-in and sign-out times were used to calculate a continuous time-weighted average staffing ratio variable for each operation. Propensity score–matching methods were applied to create balanced sample groups with respect to patient-, operative-, and hospital-level confounders and resulted in 4 groups based on anesthesiologist staffing ratio. Groups consisted of patients receiving care from an anesthesiologist covering 1 operation (group 1), more than 1 to no more than 2 overlapping operations (group 1-2), more than 2 to no more than 3 overlapping operations (group 2-3), and more than 3 to no more than 4 overlapping operations (group 3-4). Data analysis was performed from October 2019 to October 2021. EXPOSURE: Undergoing a major inpatient surgical operation that involved an anesthesiologist providing care for up to 4 overlapping operations. MAIN OUTCOMES AND MEASURES: The primary composite outcome was 30-day mortality and 6 major surgical morbidities (cardiac, respiratory, gastrointestinal, urinary, bleeding, and infectious complications) derived from International Classification of Diseases, Ninth Revision and International Statistical Classification of Diseases and Related Health Problems, Tenth Revision discharge diagnosis codes. RESULTS: In all, 578 815 adult patients (mean SD age, 55.7 16.2 years; 55.1% female) were analyzed. After matching operations according to anesthesiologist staffing ratio, 48 555 patients were in group 1; 247 057, group 1-2; 216 193, group 2-3; and 67 010, group 3-4. Increasing anesthesiologist coverage responsibilities was associated with an increase in risk-adjusted surgical patient morbidity and mortality. Compared with patients in group 1-2, those in group 2-3 had a 4% relative increase in risk-adjusted mortality and morbidity (5.06% vs 5.25%; adjusted odds ratio AOR, 1.04; 95% CI, 1.01-1.08; P = .02) and those in group 3-4 had a 14% increase in risk-adjusted mortality and morbidity (5.06% vs 5.75%; AOR, 1.15; 95% CI, 1.09-1.21; P < .001). CONCLUSIONS AND RELEVANCE: This study’s findings suggest that increasing overlapping coverage by anesthesiologists is associated with increased surgical patient morbidity and mortality. Therefore, the potential effects of staffing ratios in perioperative team models should be considered in clinical coverage efforts.
BACKGROUND:Core temperature patterns in patients warmed with forced air remain poorly characterized. Also unknown is the extent to which transient and mild intraoperative hypothermia contributes to ...adverse outcomes in broad populations.
METHODS:We evaluated esophageal (core) temperatures in 58,814 adults having surgery lasting >60 min who were warmed with forced air. Independent associations between hypothermic exposure and transfusion requirement and duration of hospitalization were evaluated.
RESULTS:In every percentile subgroup, core temperature decreased during the first hour and subsequently increased. The mean lowest core temperature during the first hour was 35.7 ± 0.6°C. Sixty-four percent of the patients reached a core temperature threshold of <36°C 45 min after induction; 29% reached a core temperature threshold of <35.5°C. Nearly half the patients had continuous core temperatures <36°C for more than an hour, and 20% of the patients were <35.5°C for more than an hour. Twenty percent of patients had continuous core temperatures <36°C for more than 2 h, and 8% of the patients were below 35.5°C for more than 2 h. Hypothermia was independently associated with both transfusions and duration of hospitalization, although the prolongation of hospitalization was small.
CONCLUSIONS:Even in actively warmed patients, hypothermia is routine during the first hour of anesthesia. Thereafter, average core temperatures progressively increase. Nonetheless, intraoperative hypothermia was common, and often prolonged. Hypothermia was associated with increased transfusion requirement, which is consistent with numerous randomized trials.
Abstract Purpose To provide outcomes data to intensivists and surgeons for counseling patients and family members when considering a surgical intervention in a moribund patient. Materials and Methods ...Retrospective analysis of prospectively collected data from the American College of Surgeons National Surgical Quality Improvement Program database in moribund patients undergoing general surgical procedures. Results Out of 633,262 patients available in the national registry, 2063 (0.3%) were of moribund status. Post-operative mortality was 52.8% for moribund patients. Those who died had higher rates of compromised respiratory, renal and cognitive dysfunction, were older, less independent prior to surgery and had generally longer surgeries. 83% of patients experienced a major complication including mortality and 17 % of patients experienced minor complications. Conclusion The moribund patient is not as grave as once thought and surgery on these patients may not be futile given the 47% survival rate at 30 days. Postoperative complication rates are high. The data presented provide a meaningful tool for the clinicians in counseling patients and families on the expectations when considering a surgical intervention for moribund patients.
Introduction
Sugammadex rapidly reverses the effects of rocuronium- and vecuronium-induced neuromuscular blockade (NMB), offering a more complete and predictable NMB recovery than cholinesterase ...inhibitors. Despite clinical benefits, cost pressures on hospital budgets influence the choice of the NMB reversal method. This study evaluated clinical and healthcare system payer’s budget impacts associated with sugammadex in the US for routine reversal of moderate or deep rocuronium- or vecuronium-induced NMB in adults undergoing surgery.
Methods
A 1-year decision analytic model was constructed reflecting a set of procedures using rocuronium or vecuronium that resulted in moderate or deep NMB at the end of surgery. Two scenarios were considered for a hypothetical cohort of 100,000 patients:
without sugammadex
versus
with sugammadex
. Comparators included neostigmine (+glycopyrrolate) and no neuromuscular blocking agents (NMBAs). Total costs (in 2019 US dollars) to a healthcare system net of costs of reversal agents and overall cost offsets via reduction in postoperative pulmonary complications (PPC) were compared.
Results
A total of 9971 surgical procedures utilized rocuronium or vecuronium, resulting in moderate (91.0% of cases) or deep (9.0%) blockade at the end of surgeries. In the
with sugammadex
scenario, sugammadex replaced neostigmine in 4156 of 9585 procedures versus the
without sugammadex
scenario that used only neostigmine for NMB reversal. Introducing sugammadex reduced PPC events by 12% (58 cases) among the modeled procedures, leading to a budget impact of –$3,079,703 (–$309 per modeled procedure, or a 10.9% reduction in total costs). The results did not vary qualitatively in one-way sensitivity analyses.
Conclusions
The additional costs of sugammadex for the reversal of rocuronium- or vecuronium-induced NMB could be offset by improved outcomes (i.e., reduced PPC events), and potentially lead to overall healthcare budgetary savings versus reversal with neostigmine or spontaneous recovery. This study provides insights into savings that can be obtained beyond the anesthesia budget, reducing the broader clinical and budgetary burden on the hospital.
Use of the electronic health record (EHR) has become a routine part of perioperative care in the United States. Secondary use of EHR data includes research, quality, and educational initiatives. ...Fundamental to secondary use is a framework to ensure fidelity, transparency, and completeness of the source data. In developing this framework, competing priorities must be considered as to which data sources are used and how data are organized and incorporated into a useable format. In assembling perioperative data from diverse institutions across the United States and Europe, the Multicenter Perioperative Outcomes Group (MPOG) has developed methods to support such a framework. This special article outlines how MPOG has approached considerations of data structure, validation, and accessibility to support multicenter integration of perioperative EHRs. In this multicenter practice registry, MPOG has developed processes to extract data from the perioperative EHR; transform data into a standardized format; and validate, deidentify, and transfer data to a secure central Coordinating Center database. Participating institutions may obtain access to this central database, governed by quality and research committees, to inform clinical practice and contribute to the scientific and clinical communities. Through a rigorous and standardized approach to ensure data integrity, MPOG enables data to be usable for quality improvement and advancing scientific knowledge. As of March 2019, our collaboration of 46 hospitals has accrued 10.7 million anesthesia records with associated perioperative EHR data across heterogeneous vendors. Facilitated by MPOG, each site retains access to a local repository containing all site-specific perioperative data, distinct from source EHRs and readily available for local research, quality, and educational initiatives. Through committee approval processes, investigators at participating sites may additionally access multicenter data for similar initiatives. Emerging from this work are 4 considerations that our group has prioritized to improve data quality(1) data should be available at the local level before Coordinating Center transfer; (2) data should be rigorously validated against standardized metrics before use; (3) data should be curated into computable phenotypes that are easily accessible; and (4) data should be collected for both research and quality improvement purposes because these complementary goals bolster the strength of each endeavor.
Opioid-related adverse events are a serious problem in hospitalized patients. Little is known about patients who are likely to experience opioid-induced respiratory depression events on the general ...care floor and may benefit from improved monitoring and early intervention. The trial objective was to derive and validate a risk prediction tool for respiratory depression in patients receiving opioids, as detected by continuous pulse oximetry and capnography monitoring.
PRediction of Opioid-induced respiratory Depression In patients monitored by capnoGraphY (PRODIGY) was a prospective, observational trial of blinded continuous capnography and oximetry conducted at 16 sites in the United States, Europe, and Asia. Vital signs were intermittently monitored per standard of care. A total of 1335 patients receiving parenteral opioids and continuously monitored on the general care floor were included in the analysis. A respiratory depression episode was defined as respiratory rate ≤5 breaths/min (bpm), oxygen saturation ≤85%, or end-tidal carbon dioxide ≤15 or ≥60 mm Hg for ≥3 minutes; apnea episode lasting >30 seconds; or any respiratory opioid-related adverse event. A risk prediction tool was derived using a multivariable logistic regression model of 46 a priori defined risk factors with stepwise selection and was internally validated by bootstrapping.
One or more respiratory depression episodes were detected in 614 (46%) of 1335 general care floor patients (43% male; mean age, 58 ± 14 years) continuously monitored for a median of 24 hours (interquartile range IQR, 17-26). A multivariable respiratory depression prediction model with area under the curve of 0.740 was developed using 5 independent variables: age ≥60 (in decades), sex, opioid naivety, sleep disorders, and chronic heart failure. The PRODIGY risk prediction tool showed significant separation between patients with and without respiratory depression (P < .001) and an odds ratio of 6.07 (95% confidence interval CI, 4.44-8.30; P < .001) between the high- and low-risk groups. Compared to patients without respiratory depression episodes, mean hospital length of stay was 3 days longer in patients with ≥1 respiratory depression episode (10.5 ± 10.8 vs 7.7 ± 7.8 days; P < .0001) identified using continuous oximetry and capnography monitoring.
A PRODIGY risk prediction model, derived from continuous oximetry and capnography, accurately predicts respiratory depression episodes in patients receiving opioids on the general care floor. Implementation of the PRODIGY score to determine the need for continuous monitoring may be a first step to reduce the incidence and consequences of respiratory compromise in patients receiving opioids on the general care floor.
BACKGROUND:Transfers of patient care and responsibility among caregivers, “handovers,” are common. Whether handovers worsen patient outcome remains unclear. The authors tested the hypothesis that ...intraoperative care transitions among anesthesia providers are associated with postoperative complications.
METHODS:From the records of 138,932 adult Cleveland Clinic (Cleveland, Ohio) surgical patients, the authors assessed the association between total number of anesthesia handovers during a case and an adjusted collapsed composite of in-hospital mortality and major morbidities using multivariable logistic regression.
RESULTS:Anesthesia care transitions were significantly associated with higher odds of experiencing any major in-hospital mortality/morbidity (incidence of 8.8, 11.6, 14.2, 17.0, and 21.2% for patients with 0, 1, 2, 3, and ≥4 transitions; odds ratio 1.08 95% CI, 1.05 to 1.10 for an increase of 1 transition category, P < 0.001). Care transitions among attending anesthesiologists and residents or nurse anesthetists were similarly associated with harm (odds ratio 1.07 98.3% CI, 1.03 to 1.12 for attending incidence of 9.4, 13.9, 17.4, and 21.5% for patients with 0, 1, 2, and ≥3 transitions and 1.07 1.04 to 1.11 for residents or nurses incidence of 9.4, 13.0, 15.4, and 21.2% for patients with 0, 1, 2, and ≥3 transitions, both P < 0.001). There was no difference between matched resident only (8.5%) and nurse anesthetist only (8.8%) cases on the collapsed composite outcome (odds ratio, 1.00 98.3%, 0.93 to 1.07; P = 0.92).
CONCLUSION:Intraoperative anesthesia care transitions are strongly associated with worse outcomes, with a similar effect size for attendings, residents, and nurse anesthetists.
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