Sustained Improvement in the Performance of Rapid Sequence Intubation Five Years after a Quality Improvement Initiative.

Many quality improvement interventions do not lead to sustained improvement, and the sustainability of healthcare interventions remains understudied. We conducted a time-series analysis to determine whether improvements in the safety of rapid sequence intubation (RSI) in our academic pediatric emergency department were sustained 5 years after a quality improvement initiative. METHODS: There were 3 study periods: baseline (April 2009-March 2010), improvement (July 2012-December 2013), and operational (January 2014-December 2018). All patients undergoing RSI were eligible. We collected data using a structured video review. We compared key processes and outcomes with statistical process control charts. RESULTS: We collected data for 615 of 643 (96%) patient encounters with RSI performed: 114 baseline (12 months), 105 improvement (18 months), and 396 operational (60 months). Key characteristics were similar, including patient age. Statistical process control charts indicated sustained improvement of all 6 key processes and the primary outcome measure (oxyhemoglobin desaturation) throughout the 5-year operational period. CONCLUSIONS: Improvements in RSI safety were sustained 5 years after a successful improvement initiative, with further improvement seen in several key processes. Further research is needed to elucidate the factors contributing to sustainability.

Reducing the incidence of oxyhaemoglobin desaturation during rapid sequence intubation in a paediatric emergency department.

OBJECTIVES: Rapid sequence intubation (RSI) is the standard for definitive airway management in emergency medicine. In a video-based study of RSI in a paediatric emergency department (ED), we reported a high degree of process variation and frequent adverse effects, including oxyhaemoglobin desaturation (SpO2<90%). This report describes a multidisciplinary initiative to improve the performance and safety of RSI in a paediatric ED. METHODS: We conducted a local improvement initiative in a high-volume academic paediatric ED. We simultaneously tested: (1) an RSI checklist, (2) a pilot/copilot model for checklist execution, (3) the use of a video laryngoscope and (4) the restriction of laryngoscopy to specific providers. Data were collected primarily by video review during the testing period and the historical period (2009-2010, baseline). We generated statistical process control charts (G-charts) to measure change in the performance of six key processes, attempt failure and the occurrence of oxyhaemoglobin desaturation during RSI. We iteratively revised the four interventions through multiple plan-do-study-act cycles within the Model for Improvement. RESULTS: There were 75 cases of RSI during the testing period (July 2012-September 2013). Special cause variation occurred on the G-charts for three of six key processes, attempt failure and desaturation, indicating significant improvement. The frequency of desaturation was 50% lower in the testing period than the historical (16% vs 33%). When all six key processes were performed, only 6% of patients experienced desaturation. CONCLUSIONS: Following the simultaneous introduction of four interventions in a paediatric ED, RSI was performed more reliably, successfully and safely.

Quality improvement project to reduce infiltration and extravasation events in a pediatric hospital.

A safety event response team at Cincinnati Children's Hospital Medical Center developed and tested improvement strategies to reduce peripheral intravenous (PIV) infiltration and extravasation injuries. Improvement activities included development of the touch-look-compare method for hourly PIV site assessment, staff education and mandatory demonstration of PIV site assessment, and performance monitoring and sharing of compliance results. We observed a significant reduction in the injury rate immediately following implementation of the interventions that corresponded with monitoring compliance in performing hourly assessments on patients with a PIV, but this was not sustained. The team is currently examining other strategies to reduce PIV injuries.

Reduction in hypoglycemic events in critically ill patients on continuous insulin following implementation of a treatment guideline.

BACKGROUND: Hyperglycemia is common in critically ill children and appears to be associated with poor outcomes. However, the incidence of hypoglycemia while attempting glycemic control using an insulin infusion may be as high as 25% and hypoglycemia may be an independent risk factor for mortality in critically ill children. METHODS: An improvement team developed a guideline for initiation and maintenance of insulin infusions for hyperglycemia in critically ill, nondiabetic patients in the pediatric intensive care unit. The guideline included an insulin infusion algorithm that provided an initiating dose, titration instructions, and discontinuation parameters. Guideline recommendations addressed the frequency of bedside blood glucose monitoring and management of symptomatic hypoglycemia while on insulin infusion. The guideline was implemented in late January 2007 and revised in September 2007. RESULTS: Hypoglycemic events in at-risk patients decreased significantly following implementation of the guideline, from 36% to 3%, despite an increase in the total number of patient days on insulin infusion. The average days between hypoglycemic events increased from 21 to 186. CONCLUSIONS: Implementation of a guideline to manage critical illness hyperglycemia in nondiabetic, critically ill pediatric patients resulted in a reduction in hypoglycemic events and a sustained increase in the days between such events.

Quality improvement project to reduce perioperative opioid oversedation events in a paediatric hospital.

BACKGROUND: Narcotics are responsible for many adverse drug events in children and there has been an increase in opioid oversedation events in hospitalised patients. OBJECTIVES: To use improvement methods to prevent perioperative opioid oversedation adverse events while continuing to provide appropriate pain control. METHODS: Interventions included revising the post-anaesthesia order form so that prescribers could choose only one narcotic and one dose for moderate pain and one narcotic and one dose for severe pain, modifying a nursing tool to provide more objective criteria for assessing patient sedation level, and restructuring the pain service. Clinicians on the Acute Pain Service saw all postoperative patients receiving intravenous patient-controlled analgesia or neuraxial narcotics in the mornings and afternoons and a nurse saw them on weekday evenings. RESULTS: The rate of opioid-related oversedation events decreased from 0.15 per 1000 patient days at baseline to 0.111 during the intervention period to 0.074 in the post-intervention period. The days between events increased from 21.0 to 27.5 to 48.8 during the same periods. The number of opioid-related oversedation events decreased from 22 to 17 to 5 during these periods, respectively. CONCLUSIONS: Opioid-related oversedation events decreased over the course of the study. Because the perioperative period is an especially likely time for opioid oversedation events, strict opioid prescribing practices, while maintaining adequate pain control and improved sedation assessment during the perioperative period, were emphasised. The restructured pain service and increased visits by pain team experts were also associated with the reduction in oversedation events.

Abnormal X: autosome ratio, but normal X chromosome inactivation in human triploid cultures.

BACKGROUND: X chromosome inactivation (XCI) is that aspect of mammalian dosage compensation that brings about equivalence of X-linked gene expression between females and males by inactivating one of the two X chromosomes (Xi) in normal female cells, leaving them with a single active X (Xa) as in male cells. In cells with more than two X's, but a diploid autosomal complement, all X's but one, Xa, are inactivated. This phenomenon is commonly thought to suggest 1) that normal development requires a ratio of one Xa per diploid autosomal set, and 2) that an early event in XCI is the marking of one X to be active, with remaining X's becoming inactivated by default. RESULTS: Triploids provide a test of these ideas because the ratio of one Xa per diploid autosomal set cannot be achieved, yet this abnormal ratio should not necessarily affect the one-Xa choice mechanism for XCI. Previous studies of XCI patterns in murine triploids support the single-Xa model, but human triploids mostly have two-Xa cells, whether they are XXX or XXY. The XCI patterns we observe in fibroblast cultures from different XXX human triploids suggest that the two-Xa pattern of XCI is selected for, and may have resulted from rare segregation errors or Xi reactivation. CONCLUSION: The initial X inactivation pattern in human triploids, therefore, is likely to resemble the pattern that predominates in murine triploids, i.e., a single Xa, with the remaining X's inactive. Furthermore, our studies of XIST RNA accumulation and promoter methylation suggest that the basic features of XCI are normal in triploids despite the abnormal X:autosome ratio.

Normal histone modifications on the inactive X chromosome in ICF and Rett syndrome cells: implications for methyl-CpG binding proteins.

BACKGROUND: In mammals, there is evidence suggesting that methyl-CpG binding proteins may play a significant role in histone modification through their association with modification complexes that can deacetylate and/or methylate nucleosomes in the proximity of methylated DNA. We examined this idea for the X chromosome by studying histone modifications on the X chromosome in normal cells and in cells from patients with ICF syndrome (Immune deficiency, Centromeric region instability, and Facial anomalies syndrome). In normal cells the inactive X has characteristic silencing type histone modification patterns and the CpG islands of genes subject to X inactivation are hypermethylated. In ICF cells, however, genes subject to X inactivation are hypomethylated on the inactive X due to mutations in the DNA methyltransferase (DNMT3B) genes. Therefore, if DNA methylation is upstream of histone modification, the histones on the inactive X in ICF cells should not be modified to a silent form. In addition, we determined whether a specific methyl-CpG binding protein, MeCP2, is necessary for the inactive X histone modification pattern by studying Rett syndrome cells which are deficient in MeCP2 function. RESULTS: We show here that the inactive X in ICF cells, which appears to be hypomethylated at all CpG islands, exhibits normal histone modification patterns. In addition, in Rett cells with no functional MeCP2 methyl-CpG binding protein, the inactive X also exhibits normal histone modification patterns. CONCLUSIONS: These data suggest that DNA methylation and the associated methyl-DNA binding proteins may not play a critical role in determining histone modification patterns on the mammalian inactive X chromosome at the sites analyzed.