Initial Extubation Research Articles

Spillover of Early Extubation Practices From the Pediatric Heart Network Collaborative Learning Study.

The Pediatric Heart Network Collaborative Learning Study used collaborative learning strategies to implement a clinical practice guideline that increased rates of early extubation after infant repair of tetralogy of Fallot and coarctation of the aorta. We assessed early extubation rates for infants undergoing cardiac surgeries not targeted by the clinical practice guideline to determine whether changes in extubation practices spilled over to care of other infants. Observational analyses of site's local Society of Thoracic Surgeons Congenital Heart Surgery Database and Pediatric Cardiac Critical Care Consortium Registry. Four Pediatric Heart Network Collaborative Learning Study active-site hospitals. Infants undergoing ventricular septal defect repair, atrioventricular septal defect repair, or superior cavopulmonary anastomosis (lower complexity), and arterial switch operation or isolated aortopulmonary shunt (higher complexity). None. Aggregate outcomes were compared between the 12 month pre-clinical practice guideline and 12 months after study completion (Follow Up). In infants undergoing lower complexity surgeries, early extubation increased during Follow Up compared with Pre-Clinical Practice Guideline (30.2% vs 18.8%, p = 0.006), and hours to initial postoperative extubation decreased. We observed variation in these outcomes by surgery type, with only ventricular septal defect repair associated with a significant increase in early extubation during Follow Up compared with Pre-Clinical Practice Guideline (47% vs 26%, p = 0.006). Variation by study site was also seen, with only one hospital showing an increase in early extubation. In patients undergoing higher complexity surgeries, there was no difference in early extubation or hours to initial extubation between the study eras. We observed spillover of extubation practices promoted by the Collaborative Learning Study clinical practice guideline to lower complexity operations not included in the original study that was sustainable 1 year after study completion, though this effect differed across sites and operation subtypes. No changes in postoperative extubation outcomes following higher complexity surgeries were seen. The significant variation in outcomes by site suggests that center-specific factors may have influenced spillover of clinical practice guideline practices.

Heated humidified high flow nasal cannula versus nasal continuous positive airway pressure for respiratory support in extremely low birth weight preterm infants after extubation: a single centre randomized controlled trial

Background: The objective of the study was to assess the indications, frequency of usage, clinical efficacy, and safety of heated humidified high-flow nasal cannula (HHHFNC) and nasal continuous positive airway pressure (NCPAP) in extremely low birth weight preterm infants (ELBWI) after extubation.Methods: Hospital based prospective randomized control study involving ELBWI with respiratory distress admitted in NICU. In this study, all selected preterm infants were placed on one of the non-invasive respiratory supports (HHHFNC or NCPAP), after a period of positive pressure ventilation (post-extubation). Reintubation rate within 72 hours after initial extubation, duration of invasive ventilation, duration of non-invasive respiratory support, duration of supplemental oxygen, and time to reach full feeds were the primary outcome measures. Duration of total enteral feeding, average weight gain rate, duration of hospitalization, and complications including nasal injury, IVH, BPD, NEC, ROP, and PDA, were the secondary outcomes.Results: A sample size of 46 ELBWI were included. HHHFNC effectively reduced the incidence of nasal injury and NEC (p<0.05) along with the decreased duration of supplementary oxygen. Additionally, HHHFNC achieved a significant advance in time to reach full enteral feeding; increased the average weight gain before discharge; reduced the duration of hospitalization (p<0.05).Conclusions: HHHFNC was effective in preventing extubation failure in mechanically ventilated preterm ELBWI compared to NCPAP. HHHFNC shortens the duration of supplemental oxygen and significantly reduces the incidence of nasal injury and necrotizing enterocolitis; moreover, it can also reduce the duration of hospitalization and its cost.

Prevalence of Reintubation Within 24 Hours of Extubation in Bronchiolitis: Retrospective Cohort Study Using the Virtual Pediatric Systems Database.

High-flow nasal cannula and noninvasive positive pressure ventilation are used to support children following liberation from invasive mechanical ventilation. Evidence comparing extubation failure rates between patients randomized to high-flow nasal cannula and noninvasive positive pressure ventilation is available for adult and neonatal patients; however, similar pediatric trials are lacking. In this study, we employed a quality controlled, multicenter PICU database to test the hypothesis that high-flow nasal cannula is associated with higher prevalence of reintubation within 24 hours among patients with bronchiolitis. Secondary analysis of a prior study utilizing the Virtual Pediatric Systems database. One-hundred twenty-four participating PICUs. Children less than 24 months old with a primary diagnosis of bronchiolitis who were admitted to one of 124 PICUs between January 2009 and September 2015 and received invasive mechanical ventilation. None. Among 759 patients, median age was 2.4 months (1.3-5.4 mo), 41.2% were female, 39.7% had greater than or equal to 1 comorbid condition, and 43.7% were Caucasian. Median PICU length of stay was 8.7 days (interquartile range, 5.8-13.7 d) and survival to PICU discharge was 100%. Median duration of intubation was 5.5 days (3.4-9.0 d) prior to initial extubation. High-flow nasal cannula was used following extubation in most (656 [86.5%]) analyzed subjects. The overall prevalence of reintubation within 24 hours was 5.9% (45 children). Extubation to noninvasive positive pressure ventilation was associated with greater prevalence of reintubation than extubation to high-flow nasal cannula (11.7% vs 5.0%; p = 0.016) and, in an a posteriori model that included Pediatric Index of Mortality 2 score and comorbidities, was associated with increased odds of reintubation (odds ratio, 2.43; 1.11-5.34; p = 0.027). In this secondary analysis of a multicenter database of children with bronchiolitis, extubation to high-flow nasal cannula was associated with a lower prevalence of reintubation within 24 hours compared with noninvasive positive pressure ventilation in both unmatched and propensity-matched analysis. Prospective trials are needed to determine if post-extubation support modality can mitigate the risk of extubation failure.

AN UNUSUAL CASE OF CARDIOVASCULAR COLLAPSE AFTER EVALI

SESSION TITLE: Medical Student/Resident Critical Care Posters SESSION TYPE: Med Student/Res Case Rep Postr PRESENTED ON: October 18-21, 2020 INTRODUCTION: In July of 2019, a new respiratory illness emerged as a cluster of healthy, young adolescents developed profound hypoxic respiratory failure. Investigation revealed that it was related to e-cigarette and vaping use. A new clinical syndrome of e-cigarette and vaping use-associated lung injury (EVALI) emerged. Its development was linked to tetrahydrocannabinol use and Vitamin E acetate. We present a case of vaping associated lung injury, resulting in severe acute respiratory distress syndrome with eventual, unexplained cardiovascular collapse and death. CASE PRESENTATION: Patient is a 37 year-old male with migraines, obesity, chronic back pain, and tetrahydrocannabinol vaping who presented with fever, shortness of breath, and altered mental status. His symptoms started with a fever 3 days prior to arrival. He arrived in distress. He was febrile, tachycardic, tachypneic, and profoundly hypoxic to 54% on room air. His blood pressure was 113/59. Initial blood gas confirmed profound hypoxemia with pH 7.33, PCO2 35.5, PO2 32.9, and saturation of 63.8 with a lactate of 8.6 mmol/L. Initial chest x-ray showed bilateral infiltrates. Patient was intubated and admitted to ICU. His initial PaO2 to FI02 ratio was 111 on a PEEP of 12, consistent with moderate ARDS. Infectious work-up including viral PCR, respiratory and blood cultures were negative. Bronchoscopy showed diffuse, pink frothy secretions in the upper airways with bronchoalveolar lavage growing commensal flora. Echocardiogram showed preserved EF and CT chest negative for pulmonary embolism, but demonstrated extensive, bilateral ground glass and airspace opacities. He completed a 14 day course of both steroids and antibiotics and gradually improved with diuresis. After initial extubation, he again decompensated and was re-intubated. He developed new EKG changes with ST elevations, reciprocal depressions, and a significant troponin elevation. Patient suffered PEA arrest and cardiac catheterization was emergently performed which demonstrated non-obstructed coronary arteries and patent pulmonary vasculature. Patient was initiated on VA ECMO. Patient further decompensated developing multi-organ failure despite VA ECMO support. Due to his poor prognosis, the decision was ultimately made to withdraw care. DISCUSSION: This patient fulfills diagnostic criteria for EVALI, including e-cigarette use within the last 90 days, lung opacities on chest radiograph or CT, exclusion of lung infection, and absence of alternative diagnosis. This case report highlights an instance of acute cardiovascular collapse in a patient with EVALI after initial course of improvement and extended treatment with antibiotics and steroids. CONCLUSIONS: Patients recovering from EVALI can experience rapid deterioration and should undergo close monitoring in an ICU setting. Physicians should also maintain a low threshold to resume treatment in the appropriate clinical setting. Reference #1: Pray IWP, Atti SKM, Tomasallo CP, Meiman JGM. E-cigarette, or Vaping, Product Use–Associated Lung Injury Among Clusters of Patients Reporting Shared Product Use — Wisconsin, 2019. In. Vol 69. Morbidity and Mortality Weekly Report 2020:236-240. Reference #2: Messina MD, Levin TL, Conrad LA, Bidiwala A. Vaping associated lung injury: A potentially life-threatening epidemic in US youth. Pediatr Pulmonol. 2020. Reference #3: Layden JE, Ghinai I, Pray I, et al. Pulmonary Illness Related to E-Cigarette Use in Illinois and Wisconsin - Final Report. N Engl J Med. 2020;382(10):903-916. DISCLOSURES: No relevant relationships by Zachary Bauer, source=Web Response No relevant relationships by Sophia Binz-Johnson, source=Web Response No relevant relationships by Aeman Hana, source=Web Response No relevant relationships by Christopher Kassab, source=Web Response No relevant relationships by Harish Kinni, source=Web Response No relevant relationships by Jennifer Swiderek, source=Web Response

Study of alteplase for respiratory failure in severe acute respiratory syndrome coronavirus 2/COVID‐19: Study design of the phase IIa STARS trial

BackgroundThe coronavirus disease 2019 (COVID‐19) pandemic has caused a large surge of acute respiratory distress syndrome (ARDS). Prior phase I trials (non–COVID‐19) demonstrated improvement in pulmonary function in patients ARDS using fibrinolytic therapy. A follow‐up trial using the widely available tissue‐type plasminogen activator (t‐PA) alteplase is now needed to assess optimal dosing and safety in this critically ill patient population. ObjectiveTo describe the design and rationale of a phase IIa trial to evaluate the safety and efficacy of alteplase treatment for moderate/severe COVID‐19–induced ARDS. Patients/MethodsA rapidly adaptive, pragmatic, open‐label, randomized, controlled, phase IIa clinical trial will be conducted with 3 groups: intravenous alteplase 50 mg, intravenous alteplase 100 mg, and control (standard‐of‐care). Inclusion criteria are known/suspected COVID‐19 infection with PaO2/FiO2 ratio <150 mm Hg for > 4 hours despite maximal mechanical ventilation management. Alteplase will be delivered through an initial bolus of 50 mg or 100 mg followed by heparin infusion for systemic anticoagulation, with alteplase redosing if there is a >20% PaO2/FiO2 improvement not sustained by 24 hours. ResultsThe primary outcome is improvement in PaO2/FiO2 at 48 hours after randomization. Other outcomes include ventilator‐ and intensive care unit–free days, successful extubation (no reintubation ≤3 days after initial extubation), and mortality. Fifty eligible patients will be enrolled in a rapidly adaptive, modified stepped‐wedge design with 4 looks at the data. ConclusionFindings will provide timely information on the safety, efficacy, and optimal dosing of t‐PA to treat moderate/severe COVID‐19–induced ARDS, which can be rapidly adapted to a phase III trial (NCT04357730; FDA IND 149634).

Minimally invasive triple valve surgery: A single center experience

Minimally invasive surgery is a widely accepted surgical treatment for valve disease, however triple valve surgery (TVS) is a complex and challenging procedure. The objective of this study was to describe the morbidity and mortality related to minimally invasive TVS at our institution. This was a retrospective review of all minimally invasive TVS performed between 2012 and 2019. Baseline and perioperative characteristics were reviewed, as were postoperative outcomes. Eighteen patients underwent TVS; 12 patients underwent additional procedures at the time of TVS. Median time to initial extubation was 11.5 hours (interquartile range [IQR] 9.8-13.3). Intensive care unit and total length of stay were 1.22 (IQR, 1.16-1.31) and 9 (IQR, 6-17) days, respectively. No hospital deaths occurred; 30-, 90-, and 365-day mortality were 0%. Two postoperative neurologic complications occurred, two patients had acute kidney injuries. The most common complication was rhythm disturbance with five patients requiring permanent pacemaker implantation. Mean follow-up was 39.9 months (252-2642 days). Our findings demonstrate that minimally invasive TVS utilizing femoral cannulation results in an acceptable risk of complication. Short and intermediate term survival were excellent.

The Comparison of HHHFNC and NCPAP in Extremely Low-Birth-Weight Preterm Infants After Extubation: A Single-Center Randomized Controlled Trial.

Objectives: To compare the clinical efficacy of heated, humidified high-flow nasal cannula (HHHFNC) and nasal continuous positive airway pressure (NCPAP) in extremely low-birth-weight preterm infants (ELBWI) after extubation.Methods: This trial included 94 extremely low-birth-weight infants (ELBWI), within 7 days after birth, and prepared for tracheal extubation and a change to non-invasive ventilation in the neonatal intensive care unit (NICU) admitted to our hospital from January 2015 to December 2018, with 48 infants in the HHHFNC group and 46 infants in the NCPAP group. Reintubation rate within 72 h after initial extubation, total ventilation time, non-invasive ventilation time, total oxygen inhalation time, and the time to reach full enteral feeding were the primary outcome measures. Total intestinal feeding time, average weight gain rate, days of hospitalization, costs of hospitalization, and complication rates, including nasal injury, IVH, BPD, NEC, ROP, and PDA, were used as secondary outcomes. Data were analyzed using Student's t-test or the Mann-Whitney U-test with a Chi-square test or Fisher's exact test, as appropriate, in SPSS (25.0).Results: HHHFNC not only shortened the oxygen exposure time but also effectively reduced the incidence of nasal injury (6.25 vs. 36.96%) and NEC (10.42 vs. 28.26%) (P < 0.05). Additionally, HHHFNC achieved a significant advance in the time to reach full enteral feeding (31.24 ± 11.35 vs. 34.21 ± 14.09 days); increased the average weight gain rate (16.07 ± 3.10 vs. 13.74 ± 4.21) and reduced the days of hospitalization (73.45 ± 18.84 vs. 79.24 ± 19.75), with a lower cost of hospitalization (16.04 ± 3.64 vs.18.79 ± 4.13) thousand dollars (all P < 0.05).Conclusions: Compared with NCPAP, HHHFNC was effective in preventing extubation failure in mechanically ventilated preterm ELBWI. HHHFNC shortens oxygen consumption time and significantly reduces the incidence of nasal injury and necrotizing enterocolitis; moreover, it can also reduce the length of stay and the hospitalization costs.

Comparison of extubation success using noninvasive positive pressure ventilation (NIPPV) versus noninvasive neurally adjusted ventilatory assist (NI-NAVA).

ObjectiveCompare rates of initial extubation success in preterm infants extubated to NIPPV or NI-NAVA.Study designIn this pilot study, we randomized 30 mechanically ventilated preterm infants at the time of initial elective extubation to NI-NAVA or NIPPV in a 1:1 assignment. Primary study outcome was initial extubation success.ResultsRates of continuous extubation for 120 h were 92% in the NI-NAVA group and 69% in the NIPPV group (12/13 vs. 9/13, respectively, p = 0.14). Infants extubated to NI-NAVA remained extubated longer (median 18 vs. 4 days, p = 0.02) and experienced lower peak inspiratory pressures (PIP) than infants managed with NIPPV throughout the first 3 days after extubation. Survival analysis through 14 days post extubation showed a sustained difference in the primary study outcome until 12 days post extubation.ConclusionsOur study is the first to suggest that a strategy of extubating preterm infants to NI-NAVA may be more successful.

Risk Factors for Perioperative Respiratory Failure following Mandibular Distraction Osteogenesis for Micrognathia: A Retrospective Cohort Study.

The frequency of respiratory events in the perioperative period, and optimal duration of intubation during early mandibular distraction osteogenesis activation, are poorly understood. This study assesses potential risk factors associated with perioperative respiratory events, particularly the need for reintubation, following mandibular distraction osteogenesis surgery. A retrospective review was conducted for infants (younger than 1 year) undergoing mandibular distraction osteogenesis for tongue-based airway obstruction between November of 2010 and December of 2017. Univariate and multivariate analyses of sentinel events and outcomes were performed. Ninety infants (median age, 35 days) were included (50 percent were syndromic). Twenty-seven subjects (30 percent) experienced a respiratory event requiring intervention before discharge, including 14 subjects who failed initial extubation. Subjects extubated earlier than postoperative day 5 failed extubation more frequently (33%) compared to those extubated later (9%; p = 0.005). Respiratory events occurred more frequently when extubation was attempted at distraction lengths of 5 mm or less (42 percent) compared to greater than 5 mm (21 percent; p = 0.032). Logistic regression modeling showed that syndromic status (OR, 14.8) and secondary airway anomaly (OR, 6.1) were significant predictors for respiratory events, whereas greater length of distraction at the time of extubation was protective (OR, 0.8; p < 0.05). Postoperative intubation of at least 5 days with associated mean distraction of 5 mm appears to be associated with successful extubation trial following mandibular distraction osteogenesis surgery. Patients with congenital syndromes and secondary airway anomalies are more likely to experience perioperative respiratory events. Risk, III.

Positive Airway Pressure Versus High-Flow Nasal Cannula for Prevention of Extubation Failure in Infants After Congenital Heart Surgery.

Compare the impact of initial extubation to positive airway pressure versus high-flow nasal cannula on postoperative outcomes in neonates and infants after congenital heart surgery. Retrospective cohort study with propensity-matched analysis. Cardiac ICU within a tertiary care children's hospital. Patients less than 6 months old initially extubated to either high-flow nasal cannula or positive airway pressure after cardiac surgery with cardiopulmonary bypass were included (July 2012 to December 2015). None. Of 258 encounters, propensity matching identified 49 pairings of patients extubated to high-flow nasal cannula versus positive airway pressure. Extubation failure was 12% for all screened encounters. After matching, there was no difference in extubation failure rate between groups (positive airway pressure 16% vs high-flow nasal cannula 10%; p = 0.549). However, compared with high-flow nasal cannula, patients initially extubated to positive airway pressure experienced greater resource utilization: longer time to low-flow nasal cannula (83 vs 28 hr; p = 0.006); longer time to room air (159 vs 110 hr; p = 0.013); and longer postsurgical hospital length of stay (22 vs 14 d; p = 0.015). In this pediatric cohort, primary extubation to positive airway pressure was not superior to high-flow nasal cannula with respect to prevention of extubation failure after congenital heart surgery. Compared with high-flow nasal cannula, use of positive airway pressure was associated with increased hospital resource utilization. Prospective initiatives aimed at establishing best clinical practice for postoperative noninvasive respiratory support are needed.

Neurally Adjusted Ventilatory Assist Is Associated with Greater Initial Extubation Success in Postoperative Congenital Heart Disease Patients when Compared to Conventional Mechanical Ventilation.

Extubation failure is associated with considerable morbidity and mortality in postoperative patients with congenital heart disease (CHD). The study purpose was to investigate initial extubation success utilizing neurally adjusted ventilatory assist (NAVA) compared with pressure-regulated volume controlled, synchronized intermittent mandatory ventilation with pressure support (SIMV-PRVC + PS) for ventilatory weaning in patients who required prolonged mechanical ventilation (MV). Also, total days on MV, inotropes, sedation, analgesia, and pediatric intensive care unit (PICU) length of stay (LOS) between both groups were compared. This was a non-randomized pilot study utilizing historical controls (SIMV-PRVC + PS; n = 40) compared with a prospective study population (NAVA; n = 35) in a Level I PICU and was implemented to help future trial designs. All patients ( n = 75) required prolonged MV ≥96 hours due to their complex postoperative course. Ventilator weaning initiation and management was standardized between both groups. Ninety-seven percent of the NAVA group was successfully extubated on the initial attempt, while 80% were in the SIMV-PRVC + PS group ( p = 0.0317). Patients placed on NAVA were eight times more likely to have successful initial extubation (odds ratio [OR]: 8.50, 95% confidence interval [CI]: 1.01, 71.82). The NAVA group demonstrated a shorter median duration on MV (9.0 vs. 11.0 days, p = 0.032), PICU LOS (9.0 vs. 13.5 days, p < 0.0001), and shorter median duration of days on dopamine (8.0 vs. 11.0 days, p = 0.0022), milrinone (9.0 vs. 12.0 days, p = 0.0002), midazolam (8.0 vs. 12.0 days, p < 0.0001), and fentanyl (9.0 vs. 12.5 days, p < 0.0001) compared with the SIMV-PRVC + PS group. NAVA compared with SIMV-PRVC + PS was associated with a greater initial extubation success rate. NAVA should be considered as a mechanical ventilator weaning strategy in postoperative congenital heart disease (CHD) patients and warrants further investigation.

Trials directly comparing alternative spontaneous breathing trial techniques: a systematic review and meta-analysis

BackgroundThe effect of alternative spontaneous breathing trial (SBT) techniques on extubation success and other clinically important outcomes is uncertain.MethodsWe searched MEDLINE, EMBASE, CENTRAL, CINAHL, Evidence-Based Medicine Reviews, Ovid Health Star, proceedings of five conferences (1990–2016), and reference lists for randomized trials comparing SBT techniques in intubated adults or children. Primary outcomes were initial SBT success, extubation success, or reintubation. Two reviewers independently screened citations, assessed trial quality, and abstracted data.ResultsWe identified 31 trials (n = 3541 patients). Moderate-quality evidence showed that patients undergoing pressure support (PS) compared with T-piece SBTs (nine trials, n = 1901) were as likely to pass an initial SBT (risk ratio (RR) 1.00, 95% confidence interval (CI) 0.89–1.11; I2 = 77%) but more likely to be ultimately extubated successfully (RR 1.06, 95% CI 1.02–1.10; 11 trials, n = 1904; I2 = 0%). Exclusion of one trial with inconsistent results for SBT and extubation outcomes suggested that PS (vs T-piece) SBTs also improved initial SBT success (RR 1.06, 95% CI 1.01–1.12; I2 = 0%). Limited data suggest that automatic tube compensation plus continuous positive airway pressure (CPAP) vs CPAP alone or PS increase SBT but not extubation success.ConclusionsPatients undergoing PS (vs T-piece) SBTs appear to be 6% (95% CI 2–10%) more likely to be extubated successfully and, if the results of an outlier trial are excluded, 6% (95% CI 1–12%) more likely to pass an SBT. Future trials should investigate patients for whom SBT and extubation outcomes are uncertain and compare techniques that maximize differences in support.

Repetitive postoperative extubation failure and cardiac arrest due to laryngomalacia after general anesthesia in an elderly patient: a case report

The authors report a case involving an elderly patient who experienced repetitive perioperative cardiac arrest caused by laryngomalacia. The patient underwent surgery under general anesthesia; however, 2h after initial extubation, he experienced cardiopulmonary arrest. Return of spontaneous circulation was achieved by immediate resuscitation. Four hours later, a second extubation was performed without any neurological complications. However, 2h later, he experienced cardiopulmonary arrest again. Immediately after the third extubation, 12h after the second cardiopulmonary arrest, fiberoptic laryngoscopy revealed laryngomalacia. His respiratory condition stabilized after emergent tracheostomy. Laryngomalacia should be considered even in adult cases when signs of upper airway obstruction manifest after extubation.

Congenital H-type tracheoesophageal fistula: A multicenter review of outcomes in a rare disease

ObjectiveTo perform a multicenter review of outcomes in patients with H-type tracheoesophageal fistula (TEF) in order to better understand the incidence and causes of post-operative complications. BackgroundH-type TEF without esophageal atresia (EA) is a rare anomaly with a fundamentally different management algorithm than the more common types of EA/TEF. Outcomes after surgical treatment of H-type TEF are largely unknown, but many authoritative textbooks describe a high incidence of respiratory complications. MethodsA multicenter retrospective review of all H-type TEF patients treated at 14 tertiary children's hospital from 2002–2012 was performed. Data were systematically collected concerning associated anomalies, operative techniques, hospital course, and short and long-term outcomes. Descriptive analyses were performed. ResultsWe identified 102 patients (median 9.5 per center, range 1–16) with H-type TEF. The overall survival was 97%. Most patients were repaired via the cervical approach (96%). The in-hospital complication rate, excluding vocal cord issues, was 16%; this included an 8% post-operative leak rate. Twenty-two percent failed initial extubation after repair. A total of 22% of the entire group had vocal cord abnormalities (paralysis or paresis) on laryngoscopy that were likely because of recurrent laryngeal nerve injury. Nine percent required a tracheostomy. Only 3% had a recurrent fistula, all of which were treated with reoperation. ConclusionsThere is a high rate of recurrent laryngeal nerve injury after H-type TEF repair. This underscores the need for meticulous surgical technique at the initial repair and suggests that early vocal cord evaluation should be performed for any post-operative respiratory difficulty. Routine evaluation of vocal cord function after H-type TEF repair should be considered. The level of evidence ratingLevel IV.

Cumulative Probability and Time to Reintubation in U.S. ICUs.

Reintubation after liberation from mechanical ventilation is viewed as an adverse event in ICUs. We sought to describe the frequency of reintubations across U.S. ICUs and to propose a standard, appropriate time cutoff for reporting of reintubation events. We conducted a cohort study using data from the Project IMPACT database of 185 diverse ICUs in the United States. We included patients who received mechanical ventilation and excluded patients who received a tracheostomy, had a do-not-resuscitate order placed, or died prior to first extubation. We assessed the percentage of patients extubated who were reintubated; the cumulative probability of reintubation, with death and do-not-resuscitate orders after extubation modeled as competing risks, and time to reintubation. Among 98,367 patients who received mechanical ventilation without death or tracheostomy prior to extubation, 9,907 (10.1%) were reintubated, with a cumulative probability of 10.0%. Median time to reintubation was 15 hours (interquartile range, 2-45 hr). Of patients who required reintubation in the ICU, 90% did so within the first 96 hours after initial extubation; this was consistent across various patient subtypes (89.3% for electives surgical patients up to 94.8% for trauma patients) and ICU subtypes (88.6% for cardiothoracic ICUs to 93.5% for medical ICUs). The reintubation rate for ICU patients liberated from mechanical ventilation in U.S. ICUs is approximately 10%. We propose a time cutoff of 96 hours for reintubation definitions and benchmarking efforts, as it captures 90% of ICU reintubation events. Reintubation rates can be reported as simple percentages, without regard for deaths or changes in goals of care that might occur.

Variation in extubation failure rates after neonatal congenital heart surgery across Pediatric Cardiac Critical Care Consortium hospitals

ObjectiveIn a multicenter cohort of neonates recovering from cardiac surgery, we sought to describe the epidemiology of extubation failure and its variability across centers, identify risk factors, and determine its impact on outcomes. MethodsWe analyzed prospectively collected clinical registry data on all neonates undergoing cardiac surgery in the Pediatric Cardiac Critical Care Consortium database from October 2013 to July 2015. Extubation failure was defined as reintubation less than 72 hours after the first planned extubation. Risk factors were identified using multivariable logistic regression with generalized estimating equations to account for within-center correlation. ResultsThe cohort included 899 neonates from 14 Pediatric Cardiac Critical Care Consortium centers; 14% were premature, 20% had genetic abnormalities, 18% had major extracardiac anomalies, and 74% underwent surgery with cardiopulmonary bypass. Extubation failure occurred in 103 neonates (11%), within 24 hours in 61%. Unadjusted rates of extubation failure ranged from 5% to 22% across centers; this variability was unchanged after adjusting for procedural complexity and airway anomaly. After multivariable analysis, only airway anomaly was identified as an independent risk factor for extubation failure (odds ratio, 3.1; 95% confidence interval, 1.4-6.7; P = .01). Neonates who failed extubation had a greater median postoperative length of stay (33 vs 23 days, P < .001) and in-hospital mortality (8% vs 2%, P = .002). ConclusionsThis multicenter study showed that 11% of neonates recovering from cardiac surgery fail initial postoperative extubation. Only congenital airway anomaly was independently associated with extubation failure. We observed a 4-fold variation in extubation failure rates across hospitals, suggesting a role for collaborative quality improvement to optimize outcomes.

Randomized Control Trial: Heated Humidity High Flow Nasal Cannula in Comparison with NCPAP in the Management of RDS in Extreme Low Birth Infants in Immediate Post Extubation Period

Background: Respiratory failure in neonates remains a difficult challenge and is associated with high morbidity and mortality. Current practice reflects the belief that limited exposure to invasive mechanical ventilation and careful use of oxygen support, results in less lung injury and improved long term pulmonary outcomes in preterm infants. Respiratory Distress Syndrome (RDS) is a common cause of respiratory failure in preterm infants and occurs in most preterm infants less than 28 weeks gestation. Standard of care involves surfactant administration and providing respiratory support. Objective: To compare the primary outcome, failure of extubation defined by the need for re-intubation and mechanical ventilation within 5 days of initial extubation and secondary outcomes, morbidities and mortality after using of heated humidity high flow nasal cannula (HHHFNC) and Nasal Continuous Positive Airway Pressure (NCPAP) in the immediate post-extubation period for preterm infants between 24 and 28 weeks gestation with respiratory distress syndrome. Methods: 60 preterm infants with gestational ages between 24 and 28 weeks were randomized in this study to either HHHFNC or NCPAP. The primary outcome measured was failed extubation defined by the need for reintubation and mechanical ventilation within 5 days of initial extubation after receiving at least 2 doses of surfactant. Secondary outcome measures included: 1. Duration of respiratory support using HHHFNC/NCPAP. 2. Duration of oxygen requirement. 3. Incidence of complications i.e. Nasal breakdown, Sepsis, Intraventricular hemorrhage, Retinopathy of prematurity and Patent Ductus Arteriosis. Preterm infants who remained intubated for more than 24 hours were excluded from the study. Results: 17.2% of neonates placed on HHHFNC failed extubation and required re-intubation within 5 days of initial extubation compared with 20.8% of neonates placed on NCPAP (p value 1.000). Mean duration of respiratory support using HHHFNC was 37.45 days compared with 40.04 days using NCPAP (p value 0.66). Duration of oxygen requirement for infants placed on HHHFNC was 49.41 days compared with 43.75 days for infants placed on NCPAP (p value 0.58). 25% of infants placed on NCPAP suffered nasal trauma, 12.5% developed sepsis, 12.5% had grades III and IV IVH, 41.67% were reported to have a PDA and 41.67% were reported to have varying stages of ROP. No nasal trauma was reported for infants placed on HHHFNC, 3.5% developed sepsis, 13.79% had grades III and IV IVH, 31.03% were reported to have a PDA and 24.14% were reported to have varying stages of ROP. Conclusion: HHHFNC use is comparable to the use of NCPAP in the immediate post-extubation period for preterm infants between 24 and 28 weeks gestations with Respiratory Distress Syndrome without an increased risk for co-morbid conditions.

Cuffed endotracheal tubes in neonates and infants undergoing cardiac surgery are not associated with airway complications

Study ObjectiveTo determine the incidence of postoperative airway complications in infants <5kg in weight undergoing cardiac surgery intubated with Microcuff (Kimberley-Clark, Roswell, GA) endotracheal tubes (ETTs). DesignRetrospective review of infants weighing <5.0 kg with congenital heart disease (CHD) presenting for cardiac surgery. SettingSingle-center, tertiary pediatric cardiac critical care unit at a university hospital. PatientsA total of 208 infants weighing <5 kg underwent cardiac surgery for CHD from 2008 to 2013. InterventionIntubation with Microcuff (Kimberley-Clark) ETTs. Study DesignRetrospective review of infants weighing <5.0 kg with CHD presenting for cardiac surgery to a single-center tertiary care university hospital. Measurements: Perioperative data were collected. Primary outcome was development of tracheal stenosis and/or reintubation for stridor. Stridor was defined as mild (≤2 doses of racemic epinephrine), moderate (>2 doses of racemic epinephrine), or severe (requiring reintubation). Secondary outcomes were variables possibly contributing to postextubation stridor. Infants with a tracheostomy, airway anomalies, and death prior to initial extubation were excluded. Logistic regression analysis was performed to evaluate the association between clinical risk factors and the incidence of postextubation stridor. ResultsA total of 208 infants weighing <5 kg underwent cardiac surgery for CHD from 2008 to 2013; 12 subjects were excluded for death prior to initial extubation. No infant developed tracheal stenosis. The incidence of any stridor was 20.9% (95% confidence interval, 15.8%-27.1%) with severe stridor in 2 cases (1%). Age at surgery, weight, duration of intubation, dexamethasone use, and ETT size were not significantly associated with postextubation stridor. Presence of a comorbidity was significantly associated with stridor (P=.01). ConclusionsMicrocuff ETTs in infants <5.0 kg in weight undergoing cardiac surgery are associated with a low incidence of severe postextubation stridor. Because cuffed ETTs allow for improved control of ventilation/oxygenation and decreased risk of aspiration, they should be considered for use in this high-risk population. Larger studies are needed to confirm these results.

Anesthesia and Poliomyelitis: A Matched Cohort Study.

Poliomyelitis is a viral infectious disease caused by 1 of the 3 strains of poliovirus. The World Health Organization launched an eradication campaign in 1988. Although the number of cases of poliomyelitis has drastically declined, eradication has not yet been achieved, and there are a substantial number of survivors of the disease. Survivors of poliomyelitis present a unique set of challenges to the anesthesiologist. The scientific literature regarding the anesthetic management of survivors of poliomyelitis, however, is limited and primarily experiential in nature. Using a retrospective, matched cohort study, we sought to more precisely characterize the anesthetic implications of poliomyelitis and to determine what risks, if any, may be present for patients with a history of the disease. Using the Mayo Clinic Life Sciences System Data Discovery and Query Builder, study subjects were identified as those with a history of paralytic poliomyelitis who had undergone major surgery at Mayo Clinic Rochester between 2005 and 2009. For each case, 2 sex- and age-matched controls that underwent the same surgical procedure during the study period were randomly selected from a pool of possible controls. Medical records were manually interrogated with respect to demographic variables, comorbid conditions, operative and anesthetic course, and postoperative course. We analyzed 100 cases with 2:1 matched controls and found that the peri- and postoperative courses were very similar for both groups of patients. Pain scores, postanesthesia care unit admission, length of postanesthesia care unit stay, intensive care unit admission, length of intensive care unit stay, and initial extubation location were not significantly different between the 2 groups. Looking at pulmonary complications in our primary outcome, there was no significant difference between the 2 groups (17% vs 14% for polio versus control, respectively; conditional logistic regression odds ratio = 1.5; 95% confidence interval, 0.7-3.3; P = 0.33). In addition, no difference was noted in those requiring a code or rapid response team intervention (4% vs 3% for polio versus control; P = 0.46) and the 30-day mortality rate was also not significantly different, with 2% of polio patients dying compared with 3% of controls (P = 0.79). The analysis of the primary outcome was repeated for the subset of patients with a history of poliomyelitis who had persistent neurologic deficits preoperatively (n = 36) and their matched controls (n = 72). In this subset analysis, there were 4 (11%) polio patients and 8 (11%) control patients who experienced pulmonary complications (conditional logistic regression odds ratio = 1.00; 95% confidence interval, 0.27-3.72; P = 1.00). The percentage of patients experiencing specific pulmonary complications of interest was similar between groups (postoperative mechanical ventilation: 6% vs 8% for polio and control patients, respectively; prolonged mechanical ventilation: 0% vs 1%; reintubation: 8% vs 4%; pulmonary infection: 6% vs 6%; and aspiration: 0% vs 1%). This study suggests that patients with a history of poliomyelitis do not seem to have an increased risk of pulmonary complications in the perioperative period. However, an odds ratio as great as 3.3-fold may be present.

Increased Intraoperative Fluid Administration Is Associated with Severe Primary Graft Dysfunction After Lung Transplantation.

Severe primary graft dysfunction (PGD) is a major cause of early morbidity and mortality in patients after lung transplantation. The etiology and pathophysiology of PGD is not fully characterized and whether intraoperative fluid administration increases the risk for PGD remains unclear from previous studies. Therefore, we tested the hypothesis that increased total intraoperative fluid volume during lung transplantation is associated with the development of grade-3 PGD. This retrospective cohort analysis included patients who had lung transplantation at the Cleveland Clinic between January 2009 and June 2013. We used multivariable logistic regression with adjustment for donor, recipient, and perioperative confounding factors to examine the association between total intraoperative fluid administration and development of grade-3 PGD in the initial 72 postoperative hours. Secondary outcomes included time to initial extubation and intensive care unit length of stay. Grade-3 PGD occurred in 123 of 494 patients (25%) who had lung transplantation. Patients with grade-3 PGD received a larger volume of intraoperative fluid (median 5.0 [3.8, 7.5] L) than those without grade-3 PGD (3.9 [2.8, 5.2] L). Each intraoperative liter of fluid increased the odds of grade-3 PGD by approximately 22% (adjusted odds ratio, 1.22; 95% confidence interval [CI], 1.12-1.34; P <0.001). The volume of transfused red blood cell concentrate was associated with grade-3 PGD (1.1 [0.0, 1.8] L for PGD-3 vs 0.4 [0.0, 1.1 for nongrade-3 PGD] L; adjusted odds ratio, 1.7; 95% CI, 1.08-2.7; P = 0.002). Increased fluid administration was associated with longer intensive care unit stay (adjusted hazard ratio, 0.92; 97.5% CI, 0.88-0.97; P < 0.001) but not with time to initial tracheal extubation (hazard ratio, 0.97; 97.5% CI, 0.93-1.02; P = 0.17). Increased intraoperative fluid volume is associated with the most severe form of PGD after lung transplant surgery. Limiting fluid administration may reduce the risk for development of grade-3 PGD and thus improve early postoperative morbidity and mortality after lung transplantation.