A Greater Analgesia, Sedation, Delirium Order Set Quality Score Is Associated With a Decreased Duration of Mechanical Ventilation in Cardiovascular Surgery Patients:

Analgesic efficacy of butorphanol combined with sufentanil after heart valve surgery: A propensity score-matching analysis

Pain is common after heart valve surgery and can stimulate the sympathetic nervous system, causing hemodynamic instability and respiratory complications. Current treatments for postoperative pain are insufficient, and postoperative pain is difficult to control effectively with a single analgesic. Therefore, we investigated the analgesic efficacy of butorphanol with sufentanil after heart valve surgery and its hemodynamic effects. The records of 221 patients admitted to the intensive care unit after cardiac valve replacement between January 1, 2018, and May 31, 2021, were retrospectively analyzed. Patients were allocated to 2 groups based on the postoperative pain treatment they received: treatment group (administered butorphanol combined with sufentanil), and control group (administered conventional sufentanil analgesia). After propensity score matching for sex, age, Acute Physiology and Chronic Health Evaluation II score, type of valve surgery, and operation duration, 76 patients were included in the study, and analgesic efficacy, hemodynamic changes, and adverse drug reactions were compared between the 2 groups. After propensity score matching, the baseline characteristics were not significantly different between the groups. The histogram and jitter plot of the propensity score distribution indicated good matching. No significant differences were observed in the duration of mechanical ventilation, duration of stay in the intensive care unit, duration of total hospital stay, and hospitalization expenditure between the groups (P > .05). The treatment group had notably higher minimum systolic blood pressure (P = .024) and lower heart rate variability (P = .049) than those in the control group. Moreover, the treatment group exhibited better analgesic efficacy and had lower critical-care pain observation tool scores and consumption of sufentanil 24 hours after surgery than the control group (P < .05). The incidence of vomiting was notably lower in the treatment than in the control group (P = .028). Butorphanol combined with sufentanil can be used in patients after heart valve replacement. This combined treatment has good analgesic efficacy and is associated with reduced adverse drug reactions and, potentially, steady hemodynamics.

Inconsistent relationship between depth of sedation and intensive care outcome: systematic review and meta-analysis

PURPOSE

To determine the effect of depth of sedation on intensive care mortality, duration of mechanical ventilation, and other clinically important outcomes.

METHODS

We searched MEDLINE, Embase, Cochrane Register of Controlled Trials, Cumulative Index to Nursing and Allied Health Literature, PsycINFO from 2000 to 2020. Randomised controlled trials (RCTs) and cohort studies that examined the effect of sedation depth were included. Two reviewers independently screened, selected articles, extracted data and appraised quality. Data on study design, population, setting, patient characteristics, study interventions, depth of sedation and relevant outcomes were extracted. Quality was assessed using Critical Appraisal Skills Programme tools.

RESULTS

We included data from 26 studies (n=7865 patients): 8 RCTs and 18 cohort studies. Heterogeneity of studies was substantial. There was no significant effect of lighter sedation on intensive care mortality. Lighter sedation did not affect duration of mechanical ventilation in RCTs (mean difference (MD): -1.44 days (95% CI -3.79 to 0.91)) but did in cohort studies (MD: -1.52 days (95% CI -2.71 to -0.34)). No statistically significant benefit of lighter sedation was identified in RCTs. In cohort studies, lighter sedation improved time to extubation, intensive care and hospital length of stay and ventilator-associated pneumonia. We found no significant effects for hospital mortality, delirium or adverse events.

CONCLUSION

Evidence of benefit from lighter sedation is limited, with inconsistency between observational and randomised studies. Positive effects were mainly limited to low quality evidence from observational studies, which could be attributable to bias and confounding factors.

Determinants of Knowledge of Pain among Nurses in a Tertiary Hospital in Spain

BACKGROUND

Poorly controlled pain in patients is related to several complications, such as increased nosocomial infections and mortality, where nurses play a crucial role.

AIMS

To analyze determinants of pain as well as nurses' knowledge and attitudes towards pain in the inpatient services of a tertiary center in the Spanish public health network.

METHODS

The Knowledge and Attitudes Survey Regarding Pain questionnaire was administered to all nurses in the center from January to March 2019. Additional sociodemographic variables, such as gender, age, employment status, work experience, professional group, and academic degree, were collected and analyzed. Item Response Theory was used for discriminant analysis of each question and its relationship with the final score.

RESULTS

A total of 282 questionnaires were collected from those distributed among nurses working in medical, surgical, oncological, and intensive care services. The average score obtained on pain-related knowledge and attitudes was 58.89%. We found significant differences (p < .001) between the KASRP score and the professional group score. There were no differences in final score based on academic level or age. Questions related to pharmacology resulted in low scores and did not discriminate between levels of knowledge, being considered difficult. We did not find items that allowed discriminating between levels of knowledge.

CONCLUSIONS

A knowledge gap exists regarding nurses' pharmacological and assessment concepts, and there are differences in knowledge depending on professional group. The KASRP allows for a good discrimination of low levels of knowledge.

Financial impact of an analgosedation protocol for mechanically ventilated patients in a cardiovascular intensive care unit

PURPOSE

The primary objective was to evaluate the impact of an analgosedation protocol in a cardiac intensive care unit (CICU) on daily doses and costs of analgesic, sedative, and antipsychotic medications.

METHODS

We conducted a single-center quasi-experimental study in 363 mechanically ventilated patients admitted to our CICU from March 1, 2011, to April 13, 2013. On March 1, 2012, an analgosedation protocol was implemented. Patients in the pre-implementation group were managed at the cardiologist's discretion, which consisted of a continuous sedative-hypnotic approach and opioids as needed. Patients in the implementation group were managed using this protocol.

RESULTS

The mean ± S.D. per-patient doses (mg/day) of propofol, lorazepam, and clonazepam decreased with the use of an analgosedation protocol (propofol 132,265.7 ± 12,951 versus 87,980.5 ± 10,564 [p = 0.03]; lorazepam 10.5 ± 7.3 versus 3.3 ± 4.0 [p < 0.001]; clonazepam 9.9 ± 8.3 versus 1.1 ± 0.5 [p = 0.03]). The mean daily cost of propofol and lorazepam also significantly decreased (33.5% reduction in propofol cost [p = 0.03]; 69.0% reduction in lorazepam cost [p < 0.001]). The per-patient dose and cost of fentanyl (mcg/day) declined with analgosedation protocol use (fentanyl 2,274.2 ± 2317.4 versus 1,026.7 ± 981.4 [p < 0.001]; 54.8% decrease in fentanyl cost [p < 0.001]).

CONCLUSION

The implementation of an analgosedation protocol significantly decreased both the use and cost of propofol, lorazepam, and fentanyl. Further investigation of the clinical impact and cost-effectiveness of a critical care consultation service with implementation of an analgosedation protocol is warranted in the CICU.

Managing sedation in the mechanically ventilated emergency department patient: a clinical review

Managing sedation in the ventilated emergency department (ED) patient is increasingly important as critical care unit admissions from EDs increase and hospital crowding results in intubated patients boarding for longer periods. The objectives of this review are 3-fold; (1) describe the historical perspective of how sedation of the ventilated patient has changed, (2) summarize the most commonly used sedation and analgesic agents, and (3) provide a practical approach to sedation and analgesia in mechanically ventilated ED patients. We searched PubMed using keywords "emergency department post-intubation sedation," "emergency department critical care length of stay," and "sedation in mechanically ventilated patient." The search results were limited to English language and reviewed for relevance to the subject of interest. Our search resulted in 723 articles that met the criteria for managing sedation in the ventilated ED patient, of which 19 articles were selected and reviewed. Our review of the literature found that the level of sedation and practices of sedation and analgesia in the ED environment have downstream consequences on patient care including overall patient centered outcomes even after the patient has left the ED. It is reasonable to begin with analgesia in isolation, although sedating medications should be used when patients remain uncomfortable and agitated after initial interventions are performed.

Nursing Workload, Knowledge about Pain, and Their Relation to Pain Records

PURPOSE

To study the relationship between frequency of pain assessment and nursing workload, and also to analyze the frequency of pain assessment and its relation to knowledge and attitudes toward pain on nursing professionals in intensive care unit.

METHODS

An ambispective study was conducted in a Spanish tertiary-level intensive care unit between October 2017 and April 2018. For measurement of workload, the Nursing Activities Score scale was used, and for measurement of pain knowledge, the Knowledge and Attitudes Survey Regarding Pain was used.

RESULTS

There were 1,207 measurements among 41 nurses and 1,838 among 317 patients. The average nursing workload was high (70.97 points). We found statistically significant positive association between nursing workload and the frequency of assessment (p < .001), as well as frequency of assessment and patients with communicative capacity (p = .008).

CONCLUSIONS

Nursing workload affects the registration and assessment of patients' pain, resulting in a greater number of records as the workload performed by nurses increases. It is necessary to study in greater depth how the severity of pain, gender of the patients, and workload of nurses influence pain registration and assessment.

Benzodiazepines and Development of Delirium in Critically Ill Children: Estimating the Causal Effect

OBJECTIVES

Benzodiazepine use may be associated with delirium in critically ill children. However, benzodiazepines remain the first-line sedative choice in PICUs. Objectives were to determine the temporal relationship between administration of benzodiazepines and delirium development, control for time-varying covariates such as mechanical ventilation and opiates, and evaluate the association between dosage of benzodiazepines and subsequent delirium.

DESIGN

Retrospective observational study.

SETTING

Academic tertiary care PICU.

PATIENTS

All consecutive admissions from January 2015 to June 2015.

INTERVENTIONS

Retrospective assessment of benzodiazepine exposure in a population that had been prospectively screened for delirium.

MEASUREMENTS AND MAIN RESULTS

All subjects were prospectively screened for delirium throughout their stay, using the Cornell Assessment for Pediatric Delirium, with daily cognitive status assigned as follows: delirium, coma, or normal. Multivariable mixed effects modeling determined predictors of delirium overall, followed by subgroup analysis to assess effect of benzodiazepines on subsequent development of delirium. Marginal structural modeling was used to create a pseudorandomized sample and control for time-dependent variables, obtaining an unbiased estimate of the relationship between benzodiazepines and next day delirium. The cumulative daily dosage of benzodiazepines was calculated to test for a dose-response relationship. Benzodiazepines were strongly associated with transition from normal cognitive status to delirium, more than quadrupling delirium rates (odds ratio, 4.4; CI, 1.7-11.1; p < 0.002). Marginal structural modeling demonstrated odds ratio 3.3 (CI, 1.4-7.8), after controlling for time-dependent confounding of cognitive status, mechanical ventilation, and opiates. With every one log increase in benzodiazepine dosage administered, there was a 43% increase in risk for delirium development.

CONCLUSIONS

Benzodiazepines are an independent and modifiable risk factor for development of delirium in critically ill children, even after carefully controlling for time-dependent covariates, with a dose-response effect. This temporal relationship suggests causality between benzodiazepine exposure and pediatric delirium and supports limiting the use of benzodiazepines in critically ill children.

Clinical Practice Guidelines for the Prevention and Management of Pain, Agitation/Sedation, Delirium, Immobility, and Sleep Disruption in Adult Patients in the ICU

OBJECTIVE

To update and expand the 2013 Clinical Practice Guidelines for the Management of Pain, Agitation, and Delirium in Adult Patients in the ICU.

DESIGN

Thirty-two international experts, four methodologists, and four critical illness survivors met virtually at least monthly. All section groups gathered face-to-face at annual Society of Critical Care Medicine congresses; virtual connections included those unable to attend. A formal conflict of interest policy was developed a priori and enforced throughout the process. Teleconferences and electronic discussions among subgroups and whole panel were part of the guidelines' development. A general content review was completed face-to-face by all panel members in January 2017.

METHODS

Content experts, methodologists, and ICU survivors were represented in each of the five sections of the guidelines: Pain, Agitation/sedation, Delirium, Immobility (mobilization/rehabilitation), and Sleep (disruption). Each section created Population, Intervention, Comparison, and Outcome, and nonactionable, descriptive questions based on perceived clinical relevance. The guideline group then voted their ranking, and patients prioritized their importance. For each Population, Intervention, Comparison, and Outcome question, sections searched the best available evidence, determined its quality, and formulated recommendations as "strong," "conditional," or "good" practice statements based on Grading of Recommendations Assessment, Development and Evaluation principles. In addition, evidence gaps and clinical caveats were explicitly identified.

RESULTS

The Pain, Agitation/Sedation, Delirium, Immobility (mobilization/rehabilitation), and Sleep (disruption) panel issued 37 recommendations (three strong and 34 conditional), two good practice statements, and 32 ungraded, nonactionable statements. Three questions from the patient-centered prioritized question list remained without recommendation.

CONCLUSIONS

We found substantial agreement among a large, interdisciplinary cohort of international experts regarding evidence supporting recommendations, and the remaining literature gaps in the assessment, prevention, and treatment of Pain, Agitation/sedation, Delirium, Immobility (mobilization/rehabilitation), and Sleep (disruption) in critically ill adults. Highlighting this evidence and the research needs will improve Pain, Agitation/sedation, Delirium, Immobility (mobilization/rehabilitation), and Sleep (disruption) management and provide the foundation for improved outcomes and science in this vulnerable population.

Spanish Version of the Knowledge and Attitudes Survey Regarding Pain

A variety of valid tools are available to assess staff knowledge and attitudes regarding pain, among which is the Knowledge and Attitudes Survey Regarding Pain. Although this instrument has been widely and successfully used, a valid and adapted Spanish version is yet to be developed. The purpose of this study was to validate the Spanish version of the Knowledge and Attitudes Survey Regarding Pain. After translating and back-translating this tool, we conducted a cross-cultural adaptation and construct validation with 102 participants, including nursing professionals (in palliative care, oncology, and intensive care) from five health centers and final-year nursing students. All participants were recruited in the Principality of Asturias, Spain. We also evaluated the internal consistency and test-retest correlations. Cronbach's α was .781, and Pearson's r and the intraclass correlation coefficient between the test and retest scores were .881 and .883, respectively. The mean questionnaire scores in the test and retest phases were 65.8% and 67.6%, respectively. Palliative care nurses had the highest score, 70.8%, which differed significantly from the rest of the groups. The Spanish version of the Knowledge and Attitudes Survey Regarding Pain can effectively differentiate nursing staff in terms of their pain expertise. The results indicate that Spanish nurses have a gap in pharmacologic knowledge that is comparable to that found in other countries, but their foundation in general pain concepts was solid.

Quality metrics in coronary artery bypass grafting

Studies on the association between care quality, case volume, and outcomes in coronary artery bypass grafting (CABG) have concluded that consistent adherence to quality measures improves mortality rates and outcomes. However, the quality metrics are not well-defined, and their significance to surgeons and healthcare providers remains uncertain. We review the concept of "quality and quality metrics" and discuss their importance in the context of CABG.

Prescriptions for Bedtime Sedatives After the Introduction of a General Admission Order Set at an Academic Health Center: The Potential and Pitfalls of Order Sets

OBJECTIVE

This study describes the impact of modifications to a general admission order set on physician prescribing of 2 as-needed or pro re nata (PRN) bedtime sedatives.

METHODS

The hospitalists at our institution have used a general medical admission order set since 2005. Zolpidem was the only as-needed (PRN) bedtime sedative option on the order set until trazodone was added in December 2008. Trazodone is preferred over zolpidem in the geriatric population. We identified patients admitted by the hospitalists between January 2007 and August 2013 who were prescribed with either zolpidem or trazodone as a PRN sedative. Patient demographics, date and time of the order, and number of sedative doses administered during the hospitalization were recorded. Orders placed within 12 hours of admission were attributed to admission orders.

RESULTS

Between 2007 and 2013, the number of patients admitted by the hospitalists with an order for PRN trazodone on admission increased by 18-fold. During the same period, the number of admissions by the hospitalists increased by 2.3 times. Zolpidem orders exceeded those for trazodone in all age groups until 2008. After the addition of trazodone, its use exceeded that of zolpidem. Almost half (48%) of all patients did not have a dose of the PRN trazodone administered.

CONCLUSIONS

Although order sets can be leveraged to align practitioners with established guidelines, the expediency of using medications on an order set may overcome physicians' clinical judgment. The content of an order set therefore deserves careful scrutiny before implementation.

Delirium is a Common and Early Finding in Patients in the Pediatric Cardiac Intensive Care Unit

OBJECTIVE

To determine incidence, associated risk factors, and characteristics of delirium in a pediatric cardiac intensive care unit (CICU). Delirium is a frequent and serious complication in adults after cardiac surgery, but there is limited understanding of its impact in children with critical cardiac disease.

STUDY DESIGN

Single-center prospective observational study of CICU patients ≤21 years old. All were screened for delirium using the Cornell Assessment for Pediatric Delirium each 12-hour shift.

RESULTS

Ninety-nine patients were included. Incidence of delirium was 57%. Median time to development of delirium was 1 day (95% CI 0, 1 days). Children with delirium were younger (geometric mean age 4 vs 46 months; P < .001), had longer periods of mechanical ventilation (mean 35.9 vs 8.8 hours; P = .002) and had longer cardiopulmonary bypass times (geometric mean 126 vs 81 minutes; P = .001). Delirious patients had longer length of CICU stay than those without delirium (median 3 (IQR 2, 12.5) vs 1 (IQR1, 2) days; P < .0001). A multivariable generalized linear mixed model showed a significant association between delirium and younger age (OR 0.35 for each additional month, 95% CI 0.19, 0.64), need for mechanical ventilation (OR 4.1, 95% CI 1.7, 9.89), and receipt of benzodiazepines (OR 3.78, 95% CI 1.46, 9.79).

CONCLUSIONS

Delirium is common in patients in the pediatric CICU and is associated with longer length of stay. There may be opportunities for prevention of delirium by targeting modifiable risk factors, such as use of benzodiazepines.

Psychometric validation of the behavioral indicators of pain scale for the assessment of pain in mechanically ventilated and unable to self-report critical care patients

OBJECTIVE

To assess the psychometric properties of the behavioral indicators of pain scale (ESCID) when applied to a wide range of medical and surgical critical patients.

DESIGN

A multicentre, prospective observational study was designed to validate a scale measuring instrument.

SETTING

Twenty Intensive Care Units of 14 hospitals belonging to the Spanish National Health System.

PARTICIPANTS

A total of 286 mechanically ventilated, unable to self-report critically ill medical and surgical adult patients.

PROCEDURE

Pain levels were measured by two independent evaluators simultaneously, using two scales: ESCID and the behavioral pain scale (BPS). Pain was observed before, during, and after two painful procedures (turning, tracheal suctioning) and one non-painful procedure.

MAIN VARIABLES

ESCID reliability was measured on the basis of internal consistency using the Cronbach-α coefficient. Inter-rater and intra-rater agreement were measured. The Spearman correlation coefficient was used to assess the correlation between ESCID and BPS.

RESULTS

A total of 4386 observations were made in 286 patients (62% medical and 38% surgical). High correlation was found between ESCID and BPS (r=0.94-0.99; p<0.001), together with high intra-rater and inter-rater concordance. ESCID was internally reliable, with a Cronbach-α value of 0.85 (95%CI 0.81-0.88). Cronbach-α coefficients for ESCID domains were high: facial expression 0.87 (95%CI 0.84-0.89), calmness 0.84 (95%CI 0.81-0.87), muscle tone 0.80 (95%CI 0.75-0.84), compliance with mechanical ventilation 0.70 (95%CI 0.63-0.75) and consolability 0.85 (95%CI 0.81-0.88).

CONCLUSION

ESCID is valid and reliable for measuring pain in mechanically ventilated unable to self-report medical and surgical critical care patients. CLINICALTRIALS.GOV: NCT01744717.

Early Rehabilitation Therapy Is Beneficial for Patients With Prolonged Mechanical Ventilation After Coronary Artery Bypass Surgery

We investigated the effects of early rehabilitation therapy on prolonged mechanically ventilated patients after coronary artery bypass surgery (CABG).A total of 106 patients who underwent CABG between June 2012 and May 2015 were enrolled and randomly assigned into an early rehabilitation group (53 cases) and a control group (53 cases). The rehabilitation therapy consisted of 6 steps including head up, transferring from supination to sitting, sitting on the edge of bed, sitting in a chair, transferring from sitting to standing, and walking along a bed. The patients received rehabilitation therapy in the intensive care unit (ICU) after CABG in the early rehabilitation group. The control group patients received rehabilitation therapy after leaving the ICU.The results showed that the early rehabilitation therapy could significantly decrease the duration of mechanical ventilation (early rehabilitation group: 8.1 ± 3.3 days; control group: 13.9 ± 4.1 days, P < 0.01), hospital stay (early rehabilitation group: 22.0 ± 3.8 days; control group: 29.1 ± 4.6 days, P < 0.01), and ICU stay (early rehabilitation group: 11.7 ± 3.2 days; control group: 18.3 ± 4.2 days, P < 0.01) for patients requiring more than 72 hours prolonged mechanical ventilation. The results of Kaplan-Meier analysis showed that the proportions of patients remaining on mechanical ventilation in the early rehabilitation group were larger than that in the control group after 7 days of rehabilitation therapy (logrank test: P < 0.01). The results provide evidence for supporting the application of early rehabilitation therapy in patients requiring prolonged mechanical ventilation after CABG.

Evidence and consensus based guideline for the management of delirium, analgesia, and sedation in intensive care medicine. Revision 2015 (DAS-Guideline 2015) - short version

In 2010, under the guidance of the DGAI (German Society of Anaesthesiology and Intensive Care Medicine) and DIVI (German Interdisciplinary Association for Intensive Care and Emergency Medicine), twelve German medical societies published the “Evidence- and Consensus-based Guidelines on the Management of Analgesia, Sedation and Delirium in Intensive Care”. Since then, several new studies and publications have considerably increased the body of evidence, including the new recommendations from the American College of Critical Care Medicine (ACCM) in conjunction with Society of Critical Care Medicine (SCCM) and American Society of Health-System Pharmacists (ASHP) from 2013. For this update, a major restructuring and extension of the guidelines were needed in order to cover new aspects of treatment, such as sleep and anxiety management. The literature was systematically searched and evaluated using the criteria of the Oxford Center of Evidence Based Medicine. The body of evidence used to formulate these recommendations was reviewed and approved by representatives of 17 national societies. Three grades of recommendation were used as follows: Grade “A” (strong recommendation), Grade “B” (recommendation) and Grade “0” (open recommendation). The result is a comprehensive, interdisciplinary, evidence and consensus-based set of level 3 guidelines. This publication was designed for all ICU professionals, and takes into account all critically ill patient populations. It represents a guide to symptom-oriented prevention, diagnosis, and treatment of delirium, anxiety, stress, and protocol-based analgesia, sedation, and sleep-management in intensive care medicine.

Postoperative Critical Care of the Adult Cardiac Surgical Patient. Part I: Routine Postoperative Care

OBJECTIVES

Cardiac surgery, including coronary artery bypass, cardiac valve, and aortic procedures, is among the most common surgical procedures performed in the United States. Successful outcomes after cardiac surgery depend on optimum postoperative critical care. The cardiac intensivist must have a comprehensive understanding of cardiopulmonary physiology and the sequelae of cardiopulmonary bypass. In this concise review, targeted at intensivists and surgeons, we discuss the routine management of the postoperative cardiac surgical patient.

DATA SOURCE AND SYNTHESIS

Narrative review of relevant English-language peer-reviewed medical literature.

CONCLUSIONS

Critical care of the cardiac surgical patient is a complex and dynamic endeavor. Adequate fluid resuscitation, appropriate inotropic support, attention to rewarming, and ventilator management are key components. Patient safety is enhanced by experienced personnel, a structured handover between the operating room and ICU teams, and appropriate transfusion strategies.

Variation in tracheal reintubations among patients undergoing cardiac surgery across Washington state hospitals

OBJECTIVES

The objectives of this study were to examine the variation in reintubations across Washington state hospitals that perform cardiac surgery, and explore hospital and patient characteristics associated with variation in reintubation.

DESIGN

Retrospective cohort study.

SETTING

All nonfederal hospitals performing cardiac surgery in Washington state.

PARTICIPANTS

A total of 15,103 patients undergoing coronary artery bypass grafting or valvular surgery between January 1, 2008 and September 30, 2011.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Patient and hospital characteristics were compared between hospitals that had a reintubation frequency ≥5% or<5%. Multivariate logistic regression was used to compare the odds of reintubation across the hospitals. The authors tested for heterogeneity of odds of reintubation across hospitals by performing a likelihood ratio test on the hospital factor. After adjusting for patient-level characteristics and procedure type, significant heterogeneity in reintubations across hospitals was present (p = 0.005). This exploratory analyses suggested that hospitals with lower reintubations were more likely to have more acute care days and teaching intensive care units (ICU).

CONCLUSIONS

After accounting for patient and procedure characteristics, significant heterogeneity in the relative odds of requiring reintubation was present across 16 nonfederal hospitals performing cardiac surgery in Washington state. The findings suggested that greater hospital volume and ICU teaching status were associated with fewer reintubations.