BackgroundThe impact of multiple tracheal intubation (TI) attempts on outcomes in critically ill children with acute respiratory failure is not known. The objective of our study is to determine the association between number of TI attempts and severe desaturation (SpO2 < 70 %) and adverse TI associated events (TIAEs).MethodsWe performed an analysis of a prospective multicenter TI database (National Emergency Airway Registry for Children: NEAR4KIDS). Primary exposure variable was number of TI attempts trichotomized as one, two, or ≥3 attempts. Estimates were adjusted for history of difficult airway, upper airway obstruction, and age. We included all children with initial TI performed with direct laryngoscopy for acute respiratory failure between 7/2010-3/2013. Our main outcome measures were desaturation (<80 % during TI attempt), severe desaturation (<70 %), adverse and severe TIAEs (e.g., cardiac arrest, hypotension requiring treatment).ResultsOf 3382 TIs, 2080(65 %) were for acute respiratory failure. First attempt success was achieved in 1256/2080(60 %), second attempt in 503/2080(24 %), and ≥3 attempts in 321/2080(15 %). Higher number of attempts was associated with younger age, history of difficult airway, signs of upper airway obstruction, and first provider training level. The proportion of TIs with desaturation increased with increasing number of attempts (1 attempt:16 %, 2 attempts:36 %, ≥3 attempts:56 %, p < 0.001; adjusted OR for 2 attempts: 2.9[95 % CI:2.3–3.7]; ≥3 attempts: 6.5[95 % CI: 5.0–8.5], adjusted for patient factors). Proportion of TIs with severe desaturation also increased with increasing number of attempts (1 attempt:12 %, 2 attempts:30 %, ≥3 attempts:44 %, p < 0.001); adjusted OR for 2 attempts: 3.1[95 % CI:2.4–4.0]; ≥3 attempts: 5.7[95 % CI: 4.3–7.5] ). TIAE rates increased from 10 to 29 to 38 % with increasing number of attempts (p < 0.001); adjusted OR for 2 attempts: 3.7[95 % CI:2.9–4.9] ; ≥3 attempts: 5.5[95 % CI: 4.1–7.4]. Severe TIAE rates went from 5 to 8 to 9 % (p = 0.008); adjusted OR for 2 attempts: 1.6 [95 % CI:1.1–2.4]; ≥3 attempts: 1.8[95 % CI:1.1–2.8].ConclusionsNumber of TI attempts was associated with desaturations and increased occurrence of TIAEs in critically ill children with acute respiratory failure. Thoughtful attention to initial provider as well as optimal setting/preparation is important to maximize the chance for first attempt success and to avoid desaturation.Electronic supplementary materialThe online version of this article (doi:10.1186/s12887-016-0593-y) contains supplementary material, which is available to authorized users.

Pediatric procedural sedation using propofol can be provided by pediatric critical care physicians effectively and with a low incidence of adverse events.

(ACEP) organized a multidisciplinary effort to create a clinical practice guideline specific to unscheduled, time-sensitive procedural sedation, which differs in important ways from scheduled, elective procedural sedation. The purpose of this guideline is to serve as a resource for practitioners who perform unscheduled procedural sedation regardless of location or patient age. This document outlines the underlying background and rationale, and issues relating to staffing, practice, and quality improvement. [

Fluid-free alveolar space is critical for normal gas exchange. Influenza virus alters fluid transport across respiratory epithelia producing rhinorrhea, middle ear effusions, and alveolar flooding. However, the mechanism of fluid retention remains unclear. We investigated influenza virus strain A/PR/8/34, which can attach and enter mammalian cells but is incapable of viral replication and productive infection in mammalian epithelia, on epithelial sodium channels (ENaC) in rat alveolar type II (ATII) cells. In parallel, we determined the effects of virus on amiloride-sensitive (i.e., ENaC-mediated) fluid clearance in rat lungs in vivo. Although influenza virus did not change the inulin permeability of ATII monolayers, it rapidly reduced the net volume transport across monolayers. Virus reduced the open probability of single ENaC channels in apical cell-attached patches. U-73122, a phospholipase C (PLC) inhibitor, and PP2, a Src inhibitor, blocked the effect of virus on ENaC. GF-109203X, a protein kinase C (PKC) inhibitor, also blocked the effect, suggesting a PKC-mediated mechanism. In parallel, intratracheal administration of influenza virus produced a rapid inhibition of amiloride-sensitive (i.e., ENaC-dependent) lung fluid transport. Together, these results show that influenza virus rapidly inhibits ENaC in ATII cells via a PLC- and Src-mediated activation of PKC but does not increase epithelial permeability in this same rapid time course. We speculate that this rapid inhibition of ENaC and formation of edema when the virus first attaches to the alveolar epithelium might facilitate subsequent influenza infection and may exacerbate influenza-mediated alveolar flooding that can lead to acute respiratory failure and death.

Objective-Most studies of ketamine administered to children for procedural sedation are limited to emergency department use. The objective of this study was to describe the practice of ketamine procedural sedation outside of the operating room and identify risk factors for adverse events.Design-Observational cohort review of data prospectively collected from 2007 to 2015 from the multicenter Pediatric Sedation Research Consortium.Setting-Sedation services from academic, community, free-standing children's hospitals and pediatric wards within general hospitals.Patients-Children from birth to 21 years old or younger. Interventions-None.Measurements and Main Results-Describe patient characteristics, procedure type, and location of administration of ketamine procedural sedation. Analyze sedation-related adverse Drs, Grunwell and Kamat conceived and developed the study and wrote the article. Drs. Travers and McCracken conducted statistical analyses and edited the article. Drs. Scherrer, Stormorken, Chumpitazi, Roback, and Stockwell edited the article. All authors read and approved the article.Supplemental digital content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal's website (http://journals.lww.com/pccmjournal).The remaining authors have disclosed that they do not have any potential conflicts of interest. Conclusions-This is a description of a large prospectively collected dataset of pediatric ketamine administration predominantly outside of the operating room. The overall incidence of severe adverse events was low. Risk factors associated with increased odds of adverse events were as follows: cardiac and gastrointestinal disease, lower respiratory tract infection, and the coadministration of propofol and anticholinergics. HHS Public AccessKeywords adverse events; ketamine; laryngospasm; pediatric procedure sedation; risk factorsThere is a growing demand to provide procedural sedation (PS) for children outside of the operating room (OR). Subspecialists such as intensivists, emergency medicine physicians, anesthesiologists, and hospitalists, all provide PS for children. Ketamine has been used by emergency medicine physicians for well over 2 decades for primarily painful procedures (1-13). We used the Pediatric Sedation Research Consortium (PSRC) database to describe the administration of ketamine during PS, characterize the adverse events (AEs), and identify the risk factors associated with AEs or severe AEs (SAEs). Based on previous studies, we hypothesized that age less than 12 months or greater than 13 years, coadministration of anticholinergics or benzodiazepines, lower respiratory tract illness, and American Society of Anesthesiologists-Physical Status (ASA-PS) greater than or equal to III would be associated with an AEs (12,(14)(15)(16)(17). METHODS Study Design and Data CollectionThis study is an observational cohort review of prospectively collected data obtained from the multicenter PSRC dat...