Kevin Couloures

Impact of Provider Specialty on Pediatric Procedural Sedation Complication Rates

OBJECTIVE: To determine if pediatric procedural sedation-provider medical specialty affects major complication rates when sedation-providers are part of an organized sedation service. METHODS: The 38 self-selected members of the Pediatric Sedation Research Consortium prospectively collected data under institutional review board approval. Demographic data, primary and coexisting illness, procedure, medications used, outcomes, airway interventions, provider specialty, and adverse events were reported on a self-audited, Web-based data collection tool. Major complications were defined as aspiration, death, cardiac arrest, unplanned hospital admission or level-of-care increase, or emergency anesthesia consultation. Event rates per 10 000 sedations, 95% confidence intervals, and odds ratios were calculated using anesthesiologists as the reference group and were then adjusted for age, emergency status, American Society of Anesthesiologists physical status > 2, nil per os for solids, propofol use, and clustering by site. RESULTS: Between July 1, 2004, and December 31, 2008, 131 751 pediatric procedural sedation cases were recorded; there were 122 major complications and no deaths. Major complication rates and 95% confidence intervals per 10 000 sedations were as follows: anesthesiologists, 7.6 (4.6–12.8); emergency medicine, 7.8 (5.5–11.2); intensivist, 9.6 (7.3–12.6); pediatrician, 12.4 (6.9–20.4); and other, 10.2 (5.1–18.3). There was no statistical difference (P > .05) among providers complication rates before or after adjustment for potential confounding variables. CONCLUSIONS: In our sedation services consortium, pediatric procedural sedation performed outside the operating room is unlikely to yield serious adverse outcomes. Within this framework, no differences were evident in either the adjusted or unadjusted rates of major complications among different pediatric specialists.

Analysis of procedural sedation provided by pediatricians

Pediatric procedural sedation outside of the operating room is performed by a variety of pediatric specialists. Using the database from the Pediatric Sedation Research Consortium (PSRC), patient demographics, medications used, diagnoses, complications, and procedures involved when pediatricians provided sedation in this cohort, were described. ‘Pediatrician’ was defined as a general pediatrician, cardiologist, endocrinologist, gastroenterologist, hematologist/oncologist, neurologist, pulmonologist or hospitalist.

Prevalence and Predictors of Adverse Events during Procedural Sedation Anesthesia-Outside the Operating Room for Esophagogastroduodenoscopy and Colonoscopy in Children: Age Is an Independent Predictor of Outcomes.

Objectives: Procedural sedation/anesthesia outside the operating room for a variety of procedures is well described with an overall low adverse event rate in certain settings. Adverse event associated with procedural sedation/anesthesia outside the operating room for gastrointestinal procedures have been described, albeit in small, single-center studies with wide variance in outcomes. Predictors of such outcomes are unclear. We aimed to estimate the prevalence of adverse event in children undergoing procedural sedation/anesthesia outside the operating room for esophagogastroduodenoscopy, colonoscopy, or both to identify predictors of adverse event. Design/Setting/Patients: Retrospective analysis of Pediatric Sedation Research Consortium database, a large data repository of pediatric patients aged 21 years old or younger undergoing procedural sedation/anesthesia outside the operating room during September 2007 to November 2011. Twenty-two of the 40 centers provided data pertaining to the procedure of interest. Interventions: None. Measurements and Main Results: Primary outcome variable is any adverse event. Independent variables include: age (five groups), sex, American Societyof Anaesthesiologists status, procedure (esophagogastroduodenoscopy, colonoscopy, or both), provider responsible, medication used, location, and presence of coexisting medical conditions. Descriptive statistics used to summarize the data. Using multivariablelogistic regression model, odds ratio, 95% CI) were computed. A total of 12,030 procedures were performed (esophagogastroduodenoscopy, 7,970; colonoscopy, 1,378; and both, 2,682). A total of 96.9% of patients received propofol. Eighty-three percent were performed in a sedation unit. Prevalence of adverse event was 4.8%. The most common adverse event were persistent desaturations (1.5%), airway obstruction (1%), cough (0.9%), and laryngospasm (0.6%). No deaths or CPR occurred. Infants and children aged 5 years old or younger had a higher adverse event rate than older children (15.8%, 7.8% vs 4%). Regression analysis revealed age 5 years old or younger, American Society of Anaesthesiologists greater than or equal to 2, esophagogastroduodenoscopy ± colonoscopy, and coexisting medical conditions of obesity and lower airway disease were independent predictors of higher adverse event. Conclusions: Overall prevalence of any adverse event was 4.8%. Independent predictors of adverse events in procedural sedation/anesthesia outside the operating room in pediatric esophagogastroduodenoscopy/colonoscopy onoscopy were identified. Recognition of such risk factors may enable optimization of procedural sedation.

Effect of the decrease in dialysate sodium in pediatric patients on chronic hemodialysis

Optimal dialysate sodium (dNa) is unknown, with both higher and lower values suggested in adult studies to improve outcomes. Similar studies in pediatric hemodialysis (HD) population are missing. This is the first report of the effect of two constant dNa concentrations in pediatric patients on chronic HD. 480 standard HD sessions and interdialytic periods were studied in 5 patients (age 4–17 years, weight 20.8–66 kg) during a period of 6–11 months per patient. dNa was 140 mEq/L during the first half, and 138 mEq/L during the second half of the study period for each patient. Lowering dNa was associated with improved preHD hypertension, decreased interdialytic weight gain, decreased need for ultrafiltration, lower sodium gradient and was well tolerated despite lack of concordance with predialysis sNa, that was variable. Further studies are needed to verify our findings and to investigate if an even lower dNa may be more beneficial in the pediatric HD population.

Outcomes following implementation of a pediatric procedural sedation guide for referral to general anesthesia for magnetic resonance imaging studies

Guidelines for referral of children to general anesthesia (GA) to complete MRI studies are lacking. We devised a pediatric procedural sedation guide to determine whether a pediatric procedural sedation guide would decrease serious adverse events and decrease failed sedations requiring rescheduling with GA.

Prenatal lead poisoning due to maternal exposure results in developmental delay

tion is a prevalent cause of multiple respiratory chain deficiency in childhood. J Pediatr. 2007; 150: 531–4. 3 Kirby DM, Crawford M, Cleary MA, Dahl HM, Dennett X, Tourburn DR. Respiratory chain complex I deficiency. An underdiagnosed energy generation disorder. Neurology 1999; 52: 1255–64. 4 Pagnamenta AT, Taaman JW, Wilson CJ et al. Dominant inheritance of premature ovarian failure associated with mutant mitochondrial DNA polymerase gamma. Hum Reprod. 2006; 21: 2467–73. 5 He L, Chinney PF, Durham SE et al. Detection and quantification of mitochondrial DNA depletions in individual cells by real-time PCR. Nucleic Acids Res. 2002; 30: e68. 6 Moraes CT, Shanske S, Tritschler HJ et al. mtDNA depletion with variable tissue expression: A novel genetic abnormality in mitochondrial diseases. Am J Hum Genet. 1991; 48: 337–41. 7 Bernier FP, Boneh A, Dennett X, Chow CW, Cleary MA, Thorburn DR. Diagnostic criteria for respiratory chain disorders in adults and children. Neurology 2002; 59: 1406–11. 8 Gibson K, Halliday JL, Kirby DM, Yaplito-Lee J, Thorburn DR, Boneh A. Mitochondrial oxidative phosphorylation disorders presenting in neonates: Clinical manifestations and enzymatic and molecular diagnoses. Pediatrics 2008; 122: 1003–8. 9 Murray J, Taylor SW, Xhang B, Ghosh SS, Capaldi RA. Oxidative damage to mitochondrial complex I due to peroxynitrite: Identification of reactive tyrosines by mass spectrometry. J Biol Chem. 2003; 278: 37223–30. 10 Lackmann GM. Influence of neonatal idiopathic respiratory distress syndrome on serum enzyme activities in premature healthy and asphyxiated newborns. Am J Perenatol. 1996; 13: 329–34.

Relationship between Interdialytic Weight Gain and Blood Pressure in Pediatric Patients on Chronic Hemodialysis

Overhydration is reported to be the main cause of hypertension (HTN) as well as to have no association with HTN in hemodialysis (HD) population. This is the first report of the relationship between interdialytic weight gain (IDWG) and pre-HD blood pressure (BP) in pediatric patients in relation to residual urine output (RUO). We studied 170 HD sessions and interdialytic periods performed during a 12-week period in 5 patients [age 4–17 years, weight 20.8–66 kg, 3 anuric (102 HD sessions), and 2 nonanuric (68 HD sessions)]. BP is presented as systolic BP index (SBPI) and diastolic BP index (DBPI), calculated as systolic or diastolic BP/95th percentile for age, height, and gender. IDWG did not differ (P > 0.05) between anuric and nonanuric pts. There was a positive but not significant correlation between IDWG and both pre-HD SBPI (r = 0.833, P = 0.080) and pre-HD DBPI (r = 0.841, P = 0.074). Pre-HD SBPI (1.01 ± 0.12 versus 1.13 ± 0.18) and DBPI (0.92 ± 0.16 versus 1.01 ± 0.24) were higher in nonanuric patents (P < 0.001 and P < 0.01, resp.). Pre-HD HTN may not be solely related to IDWG and therapies beyond fluid removal may be needed. Individualized approach to HTN management is necessary in pediatric dialysis population.

Use of Simulation to Improve Cardiopulmonary Resuscitation Performance and Code Team Communication for Pediatric Residents

Introduction Cardiorespiratory events are infrequent in pediatric teaching hospitals but can lead to significant morbidity and mortality. Clear communication within the response team prevents delays in action and allows all team members to contribute to providing optimum management. This resource was developed to simulate high-acuity and low-frequency events for pediatric residents. The scenario options are recurrent supraventricular tachycardia, prolonged QT syndrome, myocarditis, and respiratory syncytial virus bronchiolitis. Methods The simulation is best performed in a simulation center with audio- and video-recording capabilities but could also be performed in situ in the pediatric intensive care unit or emergency room. Necessary personnel include a simulation technician and two instructors. A code cart, mock medications, and defibrillator with hands-free pads appropriate for the mannequin are necessary supplies. Critical actions include initial survey and intervention, rhythm recognition, cardiopulmonary resuscitation (CPR), use of defibrillator, and administration of anti-arrhythmic medications when needed. At the conclusion of the scenario, a formal debriefing with learners using structured feedback is performed. Results These cases have been used with groups of pediatric or emergency medicine residents approximately 16 times over the past 3 years. Learners have reported that participation increased their confidence and comfort with management of cardiorespiratory events and that communication technique practice improved their teamwork and sign-out skills. Rhythm recognition and CPR performance scores during the simulation scenarios improved, with subjective improvement during actual cardiorespiratory events. Discussion This resource advances learner knowledge of Pediatric Advanced Life Support algorithms and teamwork communication and identifies learner knowledge and management deficits.

Discontinuation of Antimicrobial Prophylaxis (AP) in Children With Spina Bifida: A Case Series Analysis.

Background Spina bifida increases the risk for urinary tract infections (UTI). Antimicrobial prophylaxis (AP) reduces symptomatic UTI’s but selects resistant organisms. Measures to ensure regular and complete emptying of the bladder combined with treatment of constipation reduce the risk for UTI. Objectives Demonstrate that close adherence to a catheterization regimen in children with spina bifida (Selective Treatment - ST) reduces the need for antimicrobial prophylaxis. Methods Case series analysis of pediatric spina bifida clinic patients where routine antimicrobial prophylaxis was replaced by clean-catch catheterization and daily bowel regimen (ST). Retrospective chart review of 67 children (mean entry age: 24 months, median age: 4 months; 32 Males, 35 Females) enrolled between 1986 - 2004. Mean follow-up was 128.6 months (range 3 - 257 months). Asymptomatic and symptomatic UTI incidences were noted on AP and ST protocols. Creatinine clearance at study entry and follow-up was calculated by the age appropriate method. A multivariable regression model with delta Glomerular Filtration Rate (GFR) as the dependent variable, independent sample t-test and Wilcoxon rank sum were performed with SAS v. 9.2. Results The mean number of infections while on AP was 8.7 (95% CI 5.72, 11.68) and was 1.0 on ST (95% CI 0.48, 1.43). 5 infections on the AP protocol required intravenous (IV) antibiotics due to resistance to oral therapy, but none on ST. Comparing change in GFR between both protocols (AP vs. ST) found a significant difference in the change of GFR by treatment protocol. Conclusions AP did not prevent UTIs and resulted in more resistant organisms requiring IV antibiotics. Discontinuing AP allowed the return of susceptibility to oral antimicrobials and significantly improved GFR in those children who had previously been on AP. Adherence to a catheterization regimen with prompt treatment of symptomatic UTI conserved renal function and prevented selection of resistant organisms.