Christine Sullivan

Standardized multidisciplinary protocol improves handover of cardiac surgery patients to the intensive care unit.

Objectives: To determine whether the implementation of a standardized handover protocol could reduce the number of errors occurring during patient transitions from the operating room to the intensive care unit. Design: Prospective, interventional study. Setting: Pediatric cardiac intensive care unit. Subjects: Seventy-nine patient handovers in patients transitioning from the operating room to the cardiac intensive care unit after congenital cardiac surgery. Interventions: A preintervention assessment of patient handovers was obtained by direct observation using a standardized checklist. A teamwork-driven handover process and protocol was developed using traditional and novel quality-improvement techniques. The postimplementation observational assessment of handovers was performed using the same preintervention assessment tool. Preintervention and postintervention data metrics were analyzed and compared. Measurements and Main Results: Forty-one and 38 observations were performed in the preintervention and postintervention periods, respectively. Protocol implementation improved key areas of the handover process. Technical errors per handover were reduced from 6.24 to 1.52 (p < .0001), and critical verbal handoff information omissions were reduced from 6.33 to 2.38 (p < .0001) per handover. There was no change in duration of either the verbal handoff briefing or the overall handover process. Caregivers noted improvement in teamwork and handoff content received after the intervention. Conclusions: A formal, structured handover process for pediatric patients transitioning to the intensive care unit after cardiac surgery can reduce medical errors that occur during the admission process and improve teamwork among caregivers.

Type III Secretion Phenotypes of Pseudomonas aeruginosa Strains Change during Infection of Individuals with Cystic Fibrosis

ABSTRACT Pseudomonas aeruginosa is a frequent cause of respiratory exacerbations in individuals with cystic fibrosis. An important virulence determinant of this pathogen is its type III protein secretion system. In this study, the type III secretion properties of 435 P. aeruginosa respiratory isolates from 56 chronically infected individuals with cystic fibrosis were investigated. Although it had been previously reported that 75 to 90% of P. aeruginosa isolates from patients with hospital-acquired pneumonia secreted type III proteins, only 12% of isolates from cystic fibrosis patients did so, with nearly all of these isolates secreting ExoS and ExoT but not ExoU. Despite the low overall prevalence of type III protein-secreting isolates, at least one secreting isolate was cultured from one-third of cystic fibrosis patients. Interestingly, the fraction of cystic fibrosis patient isolates capable of secreting type III proteins decreased with duration of infection. Although 90% of isolates from the environment, the presumed reservoir for the majority of P. aeruginosa strains that infect patients with cystic fibrosis, secreted type III proteins, only 49% of isolates from newly infected children, 18% of isolates from chronically infected children, and 4% of isolates from chronically infected adults with cystic fibrosis secreted these proteins. Within individual patients, isolates of clonal origin differed in their secretion phenotypes, indicating that as strains persisted in cystic fibrosis patient airways, their type III protein secretion properties changed. Together, these findings indicate that following infection of cystic fibrosis patient airways, P. aeruginosa strains gradually change from a type III protein secretion-positive phenotype to a secretion-negative phenotype.

Identification of overweight status is associated with higher rates of screening for comorbidities of overweight in pediatric primary care practice

OBJECTIVES. The goals were to determine whether primary care provider identification of children as overweight was associated with additional screening or referrals and whether the types and numbers of visits to primary care differed for overweight and nonoverweight children. METHODS. Sequential parents/guardians at 13 diverse pediatric practices completed an in-office survey addressing health habits and demographic features. Medical records of each child from a sample of families were reviewed. Data were abstracted from the first visit and from all visits in the 14-month period before study enrollment. Analyses were limited to children ≥2 years of age for whom BMI percentile could be calculated. RESULTS. The analytic sample included 1216 children (mean age: 7.9 years; 51% male) from 777 families (parents were 43% white, 18% black, 34% Hispanic, and 5% other; 49% of families had a child receiving Medicaid/uninsured). Among overweight children (BMI of ≥95th percentile; n = 248), 28% had been identified as such in the record. Screening or referral for evaluation of comorbidities was more likely among overweight children who were identified in the record (54%) than among overweight children who were not identified (17%). Among children at risk of overweight (BMI of 85th to 94th percentile; n = 186), 5% had been identified as such in the record and overall 15% were screened/referred. In logistic regression modeling, the children identified as overweight/at risk of overweight had 6 times greater odds of receiving any management for overweight. CONCLUSIONS. Low rates of identification of overweight status and evaluation or referrals for comorbidities were found. Identification of overweight status was associated with a greatly increased rate of screening for comorbidities.

Veinlite Transillumination in the Pediatric Emergency Department A Therapeutic Interventional Trial

Objectives: We hypothesized that transillumination would increase peripheral intravenous (IV) insertion success rates in pediatric emergency department patients. Primary outcome was success in first attempt, and secondary outcome was success within 2 attempts. Methods: We evaluated IV insertion by pediatric emergency department physicians and nurses using the Veinlite (TransLite, Sugar Land, Tex). Patients who required nonemergent IV insertion were enrolled if younger than 3 years or aged 3 to 21 years with a history of difficult access. Participants were randomly assigned to transillumination or nontransillumination. Analyses were performed using a mixed-effects logistic regression model adjusting for provider effect. Results: We evaluated 240 patients. After adjusting for significant covariates (safety catheter [P = 0.008], visibility [P = 0.01], and palpability [P = 0.03]) and controlling for provider effect, IV placement was more likely successful in first attempt in transilluminated patients (P = 0.03; odds ratio, 2.1 [95% confidence interval, 1.1-3.9]). After adjusting for significant covariates (safety catheter [P < 0.001], location [P = 0.005], and palpability [P = 0.05]) and controlling for provider effect, IV placement was more likely successful within 2 attempts in transilluminated patients (P = 0.01; odds ratio, 3.5 [95% confidence interval, 1.4-8.9]). Intracluster correlation for random effect of provider was 10% in first attempt and 16% within 2 attempts. Conclusions: After adjusting for multiple significant covariates and controlling for random effect of provider, our results indicated a benefit in the use of Veinlite transillumination for IV insertion in first attempt and within 2 attempts. This technique seemed to facilitate nonemergent IV placement in pediatric patients compared with standard practice.

High-risk adenovirus-infected pediatric allogeneic hematopoietic progenitor cell transplant recipients and preemptive cidofovir therapy.

Abstract:  ADV has emerged as an important pathogen in children undergoing allogeneic HPCT. A prospective study of the epidemiology of ADV infection and preemptive therapy of high risk ADV infections in children undergoing HPCT was undertaken. Cultures of throat, urine, and stool for viral pathogens and plasma for ADV PCR were obtained prior to transplantation, weekly for the first 100 days, and then monthly for one yr. Children developing high‐risk ADV infections were treated preemptively with cidofovir 1 mg/kg/day given three times weekly for three wk. A case‐controlled study was performed to identify risk factors for high‐risk ADV infections. Seven (18%) of the 38 subjects developed high‐risk ADV infections usually within 100 days of HPCT and were preemptively treated with i.v. cidofovir at a dose of 1 mg/kg/dose three times weekly for nine doses. High‐risk ADV infections resolved in all seven patients without renal toxicity. CMV viremia occurred in two of seven patients during or shortly after therapy with cidofovir. A case–control study did not identify any risk factors that achieved statistical significance. Treatment with a modified dosing regimen of cidofovir was well‐tolerated and high‐risk ADV infections resolved in all patients.

Safety and Efficacy of Pressure-Limited Power Injection of Iodinated Contrast Medium Through Central Lines in Children

OBJECTIVE The purpose of this study was to evaluate the safety and efficacy of pressure-limited power injection of contrast medium through central lines for pediatric body CT examinations. SUBJECTS AND METHODS All patients with a central line who were referred for body CT examinations requiring an i.v. contrast agent were prospectively evaluated. The power injector was pressure limited to 25 psi (172 kPa). A standard dose of 2 mL/kg of iodinated contrast medium was power-injected through the central line. Two pediatric radiologists scored all examinations on a scale of 1 (poor) to 5 (superior) for adequacy of contrast enhancement. Regression and receiver operating characteristic analyses were performed. RESULTS The subjects were 63 patients 0.3-22 years old. Nineteen of these patients had tunneled lines, 18 had ports, and 26 had peripherally inserted central catheters. There were no complications related to power injection. Regression analysis showed a significant association between patient weight and contrast enhancement adequacy score (p < 0.001), higher patient weights yielding lower contrast enhancement adequacy scores. Receiver operating characteristic analysis showed a weight cutoff of 30 kg as a reasonable predictor of adequacy of contrast enhancement. For patients weighing 30 kg or more, the average contrast enhancement score was 2.4 (suboptimal to adequate). For patients weighing less than 30 kg, the average contrast enhancement score was 3.4 (adequate to good). CONCLUSION Pressure-limited power injection through central lines in children is safe. The contrast enhancement obtained with 25 psi (172 kPa) pressure-limited injection is acceptable only for patients who weigh less than 30 kg.

The Arterial Switch Operation: 25-Year Experience With 258 Patients

BACKGROUND At our institution, the arterial switch operation for transposition of the great arteries has transitioned from the Gore-Tex patch (W.L. Gore & Associates, Flagstaff, AZ) for pulmonary artery reconstruction to redundant pantaloon pericardial patch (RPPP). The (U-shaped) coronary artery button was used for coronary reimplantation. This study investigates overall mortality and factors for neopulmonary artery, neoaortic, and coronary artery surgical reintervention. METHODS We performed a retrospective chart review of all patients who underwent arterial switch between 1983 and 2007. Our surgical database, operative reports, and cardiology clinic charts were reviewed. Time to event was plotted as Kaplan-Meier curves. Predictors of time-to-event were examined using Cox proportional hazard modeling. RESULTS A total of 258 patients underwent arterial switch during the study. Mortality declined from 15% (era I: 1983 to 1990) to 11% (era II: 1991 to 1998) to 7% (era III: 1999 to 2007). Era III had a significantly later time to death compared with era I (hazard ratio [HR] 0.62, p = 0.04). The RPPP had a lower neopulmonary artery reintervention rate compared with Gore-Tex; 9 of 225 (4%) versus 3 of 21 (14%), p = 0.008. Complex anatomy increased risk for neopulmonary reintervention (HR 3.3, p = 0.03). Surgical reintervention rate for coronary arteries was 2%. Complex coronary anatomy (HR 17.9, p = 0.01) predicted coronary reintervention. Predictors of neoaortic reintervention were prior pulmonary artery band (HR 4.3, p = 0.03), complex anatomy (HR 3.5, p = 0.01), and coronary artery anatomy (HR 3.5, p = 0.04). CONCLUSIONS Arterial switch operation mortality has decreased. Conversion to RPPP reduced neopulmonary artery reintervention. The (U-shaped) coronary artery button technique is associated with low coronary reintervention rates. Complex coronary anatomy increases coronary and aortic reintervention. Prior pulmonary artery banding and complex anatomy increase aortic reintervention.

Teaching residents pediatric fiberoptic intubation of the trachea: Traditional fiberscope with an eyepiece versus a video-assisted technique using a fiberscope with an integrated camera

Background:The authors’ hypothesis was that a video-assisted technique should speed resident skill acquisition for flexible fiberoptic oral tracheal intubation (FI) of pediatric patients because the attending anesthesiologist can provide targeted instruction when sharing the view of the airway as the resident attempts intubation. Methods:Twenty Clinical Anesthesia year 2 residents, novices in pediatric FI, were randomly assigned to either the traditional group (traditional eyepiece FI) or the video group (video-assisted FI). One of two attending anesthesiologists supervised each resident during FI of 15 healthy children, aged 1–6 yr. The time from mask removal to confirmation of endotracheal tube placement by end-tidal carbon dioxide detection was recorded. Intubation attempts were limited to 3 min; up to three attempts were allowed. The primary outcome measure, time to success or failure, was compared between groups. Failure rate and number of attempts were also compared between groups. Results:Three hundred patient intubations were attempted; eight failed. On average, the residents in the video group were faster, were three times more likely to successfully intubate at any given time during an attempt, and required fewer attempts per patient compared to those in the traditional group. Conclusions:The video system seems to be superior for teaching residents fiberoptic intubation in children.

Serum Neopterin Levels as a Diagnostic Marker of Hemophagocytic Lymphohistiocytosis Syndrome

ABSTRACT The objective of this study was to retrospectively evaluate the utility of serum neopterin as a diagnostic marker of hemophagocytic lymphohistiocytosis (HLH). The medical records of patients diagnosed with HLH (familial and secondary) between January 2000 and May 2009 were reviewed retrospectively, and clinical and laboratory information related to HLH criteria, in addition to neopterin levels, was recorded. A group of 50 patients with active juvenile dermatomyositis (JDM) (who routinely have neopterin levels assessed) served as controls for the assessment of the accuracy, sensitivity, and specificity of neopterin as a diagnostic test for HLH. The Pearson correlation was used to measure the association between serum neopterin levels and established HLH-related laboratory data. Serum neopterin levels were measured using a competitive enzyme immunoassay. During the time frame of the study, 3 patients with familial HLH and 18 patients with secondary HLH were identified as having had serum neopterin measured (all HLH patients were grouped together). The mean neopterin levels were 84.9 nmol/liter (standard deviation [SD], 83.4 nmol/liter) for patients with HLH and 21.5 nmol/liter (SD, 10.13 nmol/liter) for patients with JDM. A cutoff value of 38.9 nmol/liter was 70% sensitive and 95% specific for HLH. For HLH patients, neopterin levels correlated significantly with ferritin levels (r = 0.76, P = 0.0007). In comparison to the level in a control group of JDM patients, elevated serum neopterin was a sensitive and specific marker for HLH. Serum neopterin has value as a diagnostic marker of HLH, and prospective studies are under way to further evaluate its role as a marker for early diagnosis and management of patients.

Increased prevalence of risk factors for morbidity and mortality in the US Hispanic CF population

Hispanic ethnicity is an independent risk factor for increased morbidity and mortality in cystic fibrosis (CF) patients. In order to compare the prevalence of risk factors for morbidity and mortality between the Hispanic CF population and the non‐Hispanic CF population, we performed a cross‐sectional study of patients in the 2004 Cystic Fibrosis Foundation Patient Registry. Among 22,714 CF patients, 1,511 were identified as ethnic Hispanic. Hispanic patients were diagnosed earlier (2.8 vs. 3.3 years, P = 0.005) and acquired Pseudomonas aeruginosa at a younger age (6.6 years vs. 10 years, P < 0.001). FEV1 was lower for Hispanic patients (81.5% vs. 87% predicted for those under 18 years old [P < 0.001] and 2.1 L vs. 2.3 L for those 18 years and older [P = 0.01]). Hispanic patients had similar or better nutritional status. Hispanic patients were more likely to be diagnosed with liver disease (OR 1.31 [1.1, 1.56]) but less likely to be diagnosed with depression (OR 0.53 [0.39, 0.68]), bone and joint disease (OR 0.55 [0.41, 0.71]), or CF‐related diabetes (OR 0.53 [0.43, 0.62]). Hispanic patients had lower median income by zip code (