Robert C. Hyzy

Sustaining reductions in catheter related bloodstream infections in Michigan intensive care units: observational study

Objectives To evaluate the extent to which intensive care units participating in the initial Keystone ICU project sustained reductions in rates of catheter related bloodstream infections. Design Collaborative cohort study to implement and evaluate interventions to improve patients’ safety. Setting Intensive care units predominantly in Michigan, USA. Intervention Conceptual model aimed at improving clinicians’ use of five evidence based recommendations to reduce rates of catheter related bloodstream infections rates, with measurement and feedback of infection rates. During the sustainability period, intensive care unit teams were instructed to integrate this intervention into staff orientation, collect monthly data from hospital infection control staff, and report infection rates to appropriate stakeholders. Main outcome measures Quarterly rate of catheter related bloodstream infections per 1000 catheter days during the sustainability period (19-36 months after implementation of the intervention). Results Ninety (87%) of the original 103 intensive care units participated, reporting 1532 intensive care unit months of data and 300 310 catheter days during the sustainability period. The mean and median rates of catheter related bloodstream infection decreased from 7.7 and 2.7 (interquartile range 0.6-4.8) at baseline to 1.3 and 0 (0-2.4) at 16-18 months and to 1.1 and 0 (0.0-1.2) at 34-36 months post-implementation. Multilevel regression analysis showed that incidence rate ratios decreased from 0.68 (95% confidence interval 0.53 to 0.88) at 0-3 months to 0.38 (0.26 to 0.56) at 16-18 months and 0.34 (0.24-0.48) at 34-36 months post-implementation. During the sustainability period, the mean bloodstream infection rate did not significantly change from the initial 18 month post-implementation period (−1%, 95% confidence interval −9% to 7%). Conclusions The reduced rates of catheter related bloodstream infection achieved in the initial 18 month post-implementation period were sustained for an additional 18 months as participating intensive care units integrated the intervention into practice. Broad use of this intervention with achievement of similar results could substantially reduce the morbidity and costs associated with catheter related bloodstream infections.

Improving patient safety in intensive care units in Michigan.

PURPOSE The aim of this study was to describe the design and lessons learned from implementing a large-scale patient safety collaborative and the impact of an intervention on teamwork climate in intensive care units (ICUs) across the state of Michigan. MATERIALS AND METHODS This study used a collaborative model for improvement involving researchers from the Johns Hopkins University and Michigan Health and Hospital Association. A quality improvement team in each ICU collected and submitted baseline data and implemented quality improvement interventions. Primary outcome measures were improvements in safety culture scores using the Teamwork Climate Scale of the Safety Attitudes Questionnaire (SAQ); 99 ICUs provided baseline SAQ data. Baseline performance for adherence to evidence-based interventions for ventilated patients is also reported. The intervention to improve safety culture was the comprehensive unit-based safety program. The rwg statistic measures the extent to which there is a group consensus. RESULTS Overall response rate for the baseline SAQ was 72%. Statistical tests confirmed that teamwork climate scores provided a valid measure of teamwork climate consensus among caregivers in an ICU, mean rwg was 0.840 (SD = 0.07). Teamwork climate varied significantly among ICUs at baseline (F98, 5325 = 5.90, P < .001), ranging from 16% to 92% of caregivers in an ICU reporting good teamwork climate. A subset of 72 ICUs repeated the culture assessment in 2005, and a 2-tailed paired samples t test showed that teamwork climate improved from 2004 to 2005, t(71) = -2.921, P < .005. Adherence to using evidence-based interventions ranged from a mean of 25% for maintaining glucose at 110 mg/dL or less to 89% for stress ulcer prophylaxis. CONCLUSION This study describes the first statewide effort to improve patient safety in ICUs. The use of the comprehensive unit-based safety program was associated with significant improvements in safety culture. This collaborative may serve as a model to implement feasible and methodologically rigorous methods to improve and sustain patient safety on a larger scale.

Acute Kidney Injury in Patients with Acute Lung Injury: Impact of Fluid Accumulation on Classification of Acute Kidney Injury and Associated Outcomes

Objective:It has been suggested that fluid accumulation may delay recognition of acute kidney injury. We sought to determine the impact of fluid balance on the incidence of nondialysis requiring acute kidney injury in patients with acute lung injury and to describe associated outcomes, including mortality. Design:Analysis of the Fluid and Catheter Treatment Trial, a factorial randomized clinical trial of conservative vs. liberal fluid management and of management guided by a central venous vs. pulmonary artery catheter. Setting:Acute Respiratory Distress Syndrome Network hospitals. Patients:One thousand patients. Interventions:None. Measurements and Main Results:The incidence of acute kidney injury, defined as an absolute rise in creatinine of ≥0.3 mg/dL or a relative change of >50% over 48 hrs, was examined before and after adjustment of serum creatinine for fluid balance. The incidence of acute kidney injury before adjustment for fluid balance was greater in those managed with the conservative fluid protocol (57% vs. 51%, p = .04). After adjustment for fluid balance, the incidence of acute kidney injury was greater in those managed with the liberal fluid protocol (66% vs. 58%, p = .007). Patients who met acute kidney injury criteria after adjustment of creatinine for fluid balance (but not before) had a mortality rate that was significantly greater than those who did not meet acute kidney injury criteria both before and after adjustment for fluid balance (31% vs. 12%, p < .001) and those who had acute kidney injury before but not after adjustment for fluid balance (31% vs. 11%, p = .005). The mortality of those patients meeting acute kidney injury criteria after but not before adjustment for fluid balance was similar to patients with acute kidney injury both before and after adjustment for fluid balance (31% vs. 38%, p = .18). Conclusions:Fluid management influences serum creatinine and therefore the diagnosis of acute kidney injury using creatinine-based definitions. Patients with “unrecognized” acute kidney injury that is identified after adjusting for positive fluid balance have higher mortality rates, and patients who have acute kidney injury before but not after adjusting for fluid balance have lower mortality rates. Future studies of acute kidney injury should consider potential differences in serum creatinine caused by changes in fluid balance and the impact of these differences on diagnosis and prognosis.

Collaborative Cohort Study of an Intervention to Reduce Ventilator-Associated Pneumonia in the Intensive Care Unit

OBJECTIVE To evaluate the impact of a multifaceted intervention on compliance with evidence-based therapies and ventilator-associated pneumonia (VAP) rates. DESIGN Collaborative cohort before-after study. SETTING Intensive care units (ICUs) predominantly in Michigan. INTERVENTIONS We implemented a multifaceted intervention to improve compliance with 5 evidence-based recommendations for mechanically ventilated patients and to prevent VAP. A standardized CDC definition of VAP was used and maintained at each site, and data on the number of VAPs and ventilator-days were obtained from the hospitals infection preventionists. Baseline data were reported and postimplementation data were reported for 30 months. VAP rates (in cases per 1,000 ventilator-days) were calculated as the proportion of ventilator-days per quarter in which patients received all 5 therapies in the ventilator care bundle. Two interventions to improve safety culture and communication were implemented first. RESULTS One hundred twelve ICUs reporting 3,228 ICU-months and 550,800 ventilator-days were included. The overall median VAP rate decreased from 5.5 cases (mean, 6.9 cases) per 1,000 ventilator-days at baseline to 0 cases (mean, 3.4 cases) at 16-18 months after implementation (P < .001) and 0 cases (mean, 2.4 cases) at 28-30 months after implementation (P < .001). Compared to baseline, VAP rates decreased during all observation periods, with incidence rate ratios of 0.51 (95% confidence interval, 0.41-0.64) at 16-18 months after implementation and 0.29 (95% confidence interval, 0.24-0.34) at 28-30 months after implementation. Compliance with evidence-based therapies increased from 32% at baseline to 75% at 16-18 months after implementation (P < .001) and 84% at 28-30 months after implementation (P < .001). CONCLUSIONS A multifaceted intervention was associated with an increased use of evidence-based therapies and a substantial (up to 71%) and sustained (up to 2.5 years) decrease in VAP rates.

Assessing and improving safety climate in a large cohort of intensive care units

Objectives:To evaluate the impact of a comprehensive unit-based safety program on safety climate in a large cohort of intensive care units participating in the Keystone intensive care unit project. Design/Setting:A prospective cohort collaborative study to improve quality of care and safety culture by implementing and evaluating patient safety interventions in intensive care units predominantly in the state of Michigan. Interventions:The comprehensive unit-based safety program was the first intervention implemented by every intensive care unit participating in the collaborative. It is specifically designed to improve the various elements of a units safety culture, such as teamwork and safety climate. We administered the validated Safety Attitudes Questionnaire at baseline (2004) and after 2 yrs of exposure to the safety program (2006) to assess improvement. The safety climate domain on the survey includes seven items. Measurements and Main Results:Post-safety climate scores for intensive care units. To interpret results, a score of <60% was in the “needs improvement” zone and a ≥10-point discrepancy in pre-post scores was needed to describe a difference. Hospital bed size, teaching status, and faith-based status were included in our analyses. Seventy-one intensive care units returned surveys in 2004 and 2006 with 71% and 73% response rates, respectively. Overall mean safety climate scores significantly improved from 42.5% (2004) to 52.2% (2006), t = −6.21, p < .001, with scores higher in faith-based intensive care units and smaller-bed-size hospitals. In 2004, 87% of intensive care units were in the “needs improvement” range and in 2006, 47% were in this range or did not score ≥10 points or higher. Five of seven safety climate items significantly improved from 2004 to 2006. Conclusions:A patient safety program designed to improve teamwork and culture was associated with significant improvements in overall mean safety climate scores in a large cohort of 71 intensive care units. Research linking improved climate scores and clinical outcomes is a critical next step.

Exploring the scope of post-intensive care syndrome therapy and care: engagement of non-critical care providers and survivors in a second stakeholders meeting.

Background:Increasing numbers of survivors of critical illness are at risk for physical, cognitive, and/or mental health impairments that may persist for months or years after hospital discharge. The post–intensive care syndrome framework encompassing these multidimensional morbidities was developed at the 2010 Society of Critical Care Medicine conference on improving long-term outcomes after critical illness for survivors and their families. Objectives:To report on engagement with non–critical care providers and survivors during the 2012 Society of Critical Care Medicine post–intensive care syndrome stakeholder conference. Task groups developed strategies and resources required for raising awareness and education, understanding and addressing barriers to clinical practice, and identifying research gaps and resources, aimed at improving patient and family outcomes. Participants:Representatives from 21 professional associations or health systems involved in the provision of both critical care and rehabilitation of ICU survivors in the United States and ICU survivors and family members. Design:Stakeholder consensus meeting. Researchers presented summaries on morbidities for survivors and their families, whereas survivors presented their own experiences. Meeting Outcomes:Future steps were planned regarding 1) recognizing, preventing, and treating post–intensive care syndrome, 2) building strategies for institutional capacity to support and partner with survivors and families, and 3) understanding and addressing barriers to practice. There was recognition of the need for systematic and frequent assessment for post–intensive care syndrome across the continuum of care, including explicit “functional reconciliation” (assessing gaps between a patient’s pre-ICU and current functional ability at all intra- and interinstitutional transitions of care). Future post–intensive care syndrome research topic areas were identified across the continuum of recovery: characterization of at-risk patients (including recognizing risk factors, mechanisms of injury, and optimal screening instruments), prevention and treatment interventions, and outcomes research for patients and families. Conclusions:Raising awareness of post–intensive care syndrome for the public and both critical care and non–critical care clinicians will inform a more coordinated approach to treatment and support during recovery after critical illness. Continued conceptual development and engagement with additional stakeholders is required.

A randomized trial of recombinant human granulocyte-macrophage colony stimulating factor for patients with acute lung injury*

Rationale:Despite recent advances in critical care and ventilator management, acute lung injury and acute respiratory distress syndrome continue to cause significant morbidity and mortality. Granulocyte-macrophage colony stimulating factor may be beneficial for patients with acute respiratory distress syndrome. Objectives:To determine whether intravenous infusion of granulocyte-macrophage colony stimulating factor would improve clinical outcomes for patients with acute lung injury/acute respiratory distress syndrome. Design:A randomized, double-blind, placebo-controlled clinical trial of human recombinant granulocyte-macrophage colony stimulating factor vs. placebo. The primary outcome was days alive and breathing without mechanical ventilatory support within the first 28 days after randomization. Secondary outcomes included mortality and organ failure-free days. Setting:Medical and surgical intensive care units at three academic medical centers. Patients:One hundred thirty individuals with acute lung injury of at least 3 days duration were enrolled, out of a planned cohort of 200 subjects. Interventions:Patients were randomized to receive human recombinant granulocyte-macrophage colony stimulating factor (64 subjects, 250 &mgr;g/M2) or placebo (66 subjects) by intravenous infusion daily for 14 days. Patients received mechanical ventilation using a lung-protective protocol. Measurements and Main Results:There was no difference in ventilator-free days between groups (10.7 ± 10.3 days placebo vs. 10.8 ± 10.5 days granulocyte-macrophage colony stimulating factor, p = .82). Differences in 28-day mortality (23% in placebo vs. 17% in patients receiving granulocyte-macrophage colony stimulating factor (p = .31) and organ failure-free days (12.8 ± 11.3 days placebo vs. 15.7 ± 11.9 days granulocyte-macrophage colony stimulating factor, p = .16) were not statistically significant. There were similar numbers of serious adverse events in each group. Conclusions:In a randomized phase II trial, granulocyte-macrophage colony stimulating factor treatment did not increase the number of ventilator-free days in patients with acute lung injury/acute respiratory distress syndrome. A larger trial would be required to determine whether treatment with granulocyte-macrophage colony stimulating factor might alter important clinical outcomes, such as mortality or multiorgan failure. (ClinicalTrials.gov number, NCT00201409 [ClinicalTrials.gov]).

Bringing quality improvement into the intensive care unit.

Background:During the last several years, many governmental and nongovernmental organizations have championed the application of the principles of quality improvement to the practice of medicine, particularly in the area of critical care. Objective:To review the breadth of approaches to quality improvement in the intensive care unit, including measures such as mortality and length of stay, and the use of protocols, bundles, and the role of large, multiple-hospital collaboratives. Results:Several agencies have participated in the application of the quality movement to medicine, culminating in the development of standards such as the intensive care unit core measures of the Joint Commission on Accreditation of Healthcare Organizations. Although “zero defects” may not be possible in all measurable variables of quality in the intensive care unit, several measures, such as catheter-related bloodstream infections, can be significantly reduced through the implementation of improved processes of care, such as care bundles. Large, multiple-center, quality improvement collaboratives, such as the Michigan Keystone Intensive Care Unit Project, may be particularly effective in improving the quality of care by creating a “bandwagon effect” within a geographic region. Conclusion:The quality revolution is having a significant effect in the critical care unit and is likely to be facilitated by the transition to the electronic medical record.

An Official American Thoracic Society/American Association of Critical-Care Nurses/American College of Chest Physicians/Society of Critical Care Medicine Policy Statement: The Choosing Wisely® Top 5 List in Critical Care Medicine

RATIONALE The high costs of health care in the United States and other developed nations are attributable, in part, to overuse of tests, treatments, and procedures that provide little to no benefit for patients. To improve the quality of care while also combating this problem of cost, the American Board of Internal Medicine Foundation developed the Choosing Wisely Campaign, tasking professional societies to develop lists of the top five medical services that patients and physicians should question. OBJECTIVES To present the Critical Care Societies Collaboratives Top 5 list in Critical Care Medicine and describe its development. METHODS Each professional society in the Collaborative nominated members to the Choosing Wisely task force, which established explicit criteria for evaluating candidate items, generated lists of items, performed literature reviews on each, and sought external input from content experts. Task force members narrowed the list to the Top 5 items using a standardized scoring system based on each items likely overall impact and merits on the five explicit criteria. MEASUREMENTS AND MAIN RESULTS From an initial list of 58 unique recommendations, the task force proposed a Top 5 list that was ultimately endorsed by each Society within the Collaborative. The five recommendations are: (1) do not order diagnostic tests at regular intervals (such as every day), but rather in response to specific clinical questions; (2) do not transfuse red blood cells in hemodynamically stable, nonbleeding ICU patients with an Hb concentration greater than 7 g/dl; (3) do not use parenteral nutrition in adequately nourished critically ill patients within the first 7 days of an ICU stay; (4) do not deeply sedate mechanically ventilated patients without a specific indication and without daily attempts to lighten sedation; and (5) do not continue life support for patients at high risk for death or severely impaired functional recovery without offering patients and their families the alternative of care focused entirely on comfort. CONCLUSIONS These five recommendations provide a starting point for clinicians and patients to make decisions leading to higher-quality, lower-cost care. Future work is needed to promote adherence to these recommendations and to develop additional ways for intensive care clinicians to take leadership in reining in health-care costs.

A polyurethane cuffed endotracheal tube is associated with decreased rates of ventilator-associated pneumonia ☆

PURPOSE The aim of this study was to determine whether the use of a polyurethane-cuffed endotracheal tube would result in a decrease in ventilator-associated pneumonia rate. MATERIALS AND METHODS We replaced conventional endotracheal tube with a polyurethane-cuff endotracheal tube (Microcuff, Kimberly-Clark Corporation, Rosewell, Ga) in all adult mechanically ventilated patients throughout our large academic hospital from July 2007 to June 2008. We retrospectively compared the rates of ventilator-associated pneumonia before, during, and after the intervention year by interrupted time-series analysis. RESULTS Ventilator-associated pneumonia rates decreased from 5.3 per 1000 ventilator days before the use of the polyurethane-cuffed endotracheal tube to 2.8 per 1000 ventilator days during the intervention year (P = .0138). During the first 3 months after return to conventional tubes, the rate of ventilator-associated pneumonia was 3.5/1000 ventilator days. Use of the polyurethane-cuffed endotracheal tube was associated with an incidence risk ratio of ventilator-associated pneumonia of 0.572 (95% confidence interval, 0.340-0.963). In statistical regression analysis controlling for other possible alterations in the hospital environment, as measured by rate of tracheostomy-ventilator-associated pneumonia, the incidence risk ratio of ventilator-associated pneumonia in patients intubated with polyurethane-cuffed endotracheal tube was 0.565 (P = .032; 95% confidence interval, 0.335-0.953). CONCLUSIONS Use of a polyurethane-cuffed endotracheal tube was associated with a significant decrease in the rate of ventilator-associated pneumonia in our study.