European Pediatric Cardiac Anesthesia Fellowship Program: A First Proof of Concept.

The Pediatric Cardiac Anesthesia (PCA) fellowship is a demanding training program in Europe and the United States. Successful completion of the program requires years of training in anesthesiology, a thorough understanding of cardiovascular anatomy and physiology, and extensive experience in the perioperative management of neonates and children with heart disease. In the context of the first candidate to successfully complete the PCA program in Europe, this article presents excerpts from the design and structure of the European PCA program. The PCA program is evaluated critically by both external and internal reviewers, and points are highlighted that could be included in the next version of the program.

Selected 2023 Highlights in Congenital Cardiac Anesthesia.

This article reviews the highlights of pertinent literature of interest to the congenital cardiac anesthesiologist published in 2023. After a search of the US National Library of Medicine PubMed database, several topics emerged where significant contributions were made in 2023. The authors of this article considered the following topics noteworthy to be included in this review: (1) advancements in percutaneous mechanical support in children with congenital heart disease, (2) children with pulmonary hypertension undergoing surgery for congenital heart disease, (3) dexmedetomidine in pediatric cardiac surgery, and (4) recommendations for pediatric heart surgery in the United States: Implications for pediatric cardiac anesthesia.

Where have all the pediatric anesthesiology fellows gone in the USA? Anesthesiology fellowship trends.

BACKGROUND: Recent consternation over the number of unfilled Pediatric Anesthesiology fellowship positions in the United States compelled us to assess the change in the ratio of Pediatric Anesthesiology fellows to the number of graduating anesthesiology residents over the 14-year period between 2008 and 2022. We also sought to report the total ratio of anesthesiology fellows to graduating residents and trends in the annual number of fellowship applicants relative to the number of Accreditation Council for Graduate Medical Education (ACGME)-accredited anesthesiology fellowship positions by specialty. METHODS: We used publicly available resources, including ACGME Data Resource Books, National Resident Matching Program (NRMP) data, San Francisco (SF) Match data, and American Board of Medical Specialties (ABMS) data, to determine the ratio of anesthesiology fellows to graduating anesthesiology residents and to compare the number of fellowship applicants to fellowship positions for Adult Cardiothoracic Anesthesiology, Critical Care Anesthesiology, Obstetric Anesthesiology, Pain Medicine and Pediatric Anesthesiology. RESULTS: Since 2008, the ratio of ACGME-accredited anesthesiology fellows to graduating residents increased from 0.36 in 2008 (2007 residency graduates) to 0.59 in 2022 (2021 residency graduates) and the ratio of Pediatric Anesthesiology fellows to graduating residents remained relatively stable from 0.10 to 0.11. The number of unmatched positions in Pediatric Anesthesiology increased from 17 in 2017 to 86 in 2023, and all ACGME-accredited fellowships had more positions available than applicants in 2023. CONCLUSION: In the USA, while the ratio of Pediatric Anesthesiology fellowship graduates to anesthesiology residency graduates remained relatively constant from 2008 to 2022, this is likely a lagging indicator that has not yet accounted for the recent decrease in fellowship applicants. These findings refute prior estimates for a surplus in Pediatric Anesthesia supply in the USA and have significant implications for the future.

Validation of Automated Data Extraction From the Electronic Medical Record to Provide a Pediatric Risk Assessment Score.

BACKGROUND: Although the rate of pediatric postoperative mortality is low, the development and validation of perioperative risk assessment models have allowed for the stratification of those at highest risk, including the Pediatric Risk Assessment (PRAm) score. The clinical application of such tools requires manual data entry, which may be inaccurate or incomplete, compromise efficiency, and increase physicians' clerical obligations. We aimed to create an electronically derived, automated PRAm score and to evaluate its agreement with the original American College of Surgery National Surgical Quality Improvement Program (ACS NSQIP)-derived and validated score. METHODS: We performed a retrospective observational study of children <18 years who underwent noncardiac surgery from 2017 through 2021 at Boston Children's Hospital (BCH). An automated PRAm score was developed via electronic derivation of International Classification of Disease (ICD) -9 and -10 codes. The primary outcome was agreement and correlation among PRAm scores obtained via automation, NSQIP data, and manual physician entry from the same BCH cohort. The secondary outcome was discriminatory ability of the 3 PRAm versions. Fleiss Kappa, Spearman correlation (rho), and intraclass correlation coefficient (ICC) and receiver operating characteristic (ROC) curve analyses with area under the curve (AUC) were applied accordingly. RESULTS: Of the 6014 patients with NSQIP and automated PRAm scores (manual scores: n = 5267), the rate of 30-day mortality was 0.18% (n = 11). Agreement and correlation were greater between the NSQIP and automated scores (rho = 0.78; 95% confidence interval [CI], 0.76-0.79; P <.001; ICC = 0.80; 95% CI, 0.79-0.81; Fleiss kappa = 0.66; 95% CI, 0.65-0.67) versus the NSQIP and manual scores (rho = 0.73; 95% CI, 0.71-0.74; P < .001; ICC = 0.78; 95% CI, 0.77-0.79; Fleiss kappa = 0.56; 95% CI, 0.54-0.57). ROC analysis with AUC showed the manual score to have the greatest discrimination (AUC = 0.976; 95% CI, 0.959,0.993) compared to the NSQIP (AUC = 0.904; 95% CI, 0.792-0.999) and automated (AUC = 0.880; 95% CI, 0.769-0.999) scores. CONCLUSIONS: Development of an electronically derived, automated PRAm score that maintains good discrimination for 30-day mortality in neonates, infants, and children after noncardiac surgery is feasible. The automated PRAm score may reduce the preoperative clerical workload and provide an efficient and accurate means by which to risk stratify neonatal and pediatric surgical patients with the goal of improving clinical outcomes and resource utilization.

Evolution of Accredited Pediatric Cardiac Anesthesiology Fellowship Training in the United States: A Step in the Right Direction.

Pediatric cardiac anesthesiology has developed as a subsubspecialty of anesthesiology over the past 70 years. The evolution of this specialty has led to the establishment in 2005 of a dedicated professional society, the Congenital Cardiac Anesthesia Society (CCAS). By 2010, multiple training pathways for pediatric cardiac anesthesia emerged. Eight programs in the United States offered advanced pediatric cardiac anesthesia with variable duration, ranging from 3 to 12 months. Other programs offered a combined fellow/staff position for 1 year. The need for a standardized training pathway was recognized by the Pediatric Anesthesia Leadership Council (PALC) and CCAS in 2014. Specifically, it was recommended that pediatric cardiac anesthesiology be a second, 12-month advanced fellowship following pediatric anesthesia to acquire skills unique from those acquired during a pediatric anesthesia fellowship. This was reiterated in 2018, when specific pediatric cardiac anesthesia training milestones were developed through consensus by the CCAS leadership. However, given the continuous increasing demand for well-trained pediatric cardiac anesthesiologists, it is essential that a supply of comprehensively trained physicians exists. High-quality training programs are therefore necessary to ensure excellent clinical care and enhanced patient safety. Currently, there are 23 programs offering one or more positions for 1-year pediatric cardiac anesthesia fellowship. Due to the diverse curriculum and evaluation process, formalization of the training with accreditation through the Accreditation Council for Graduate Medical Education (ACGME) was the obvious next step. Initial inquiry started in April 2020. The ACGME recognized pediatric cardiac anesthesia as a subsubspecialty in February 2021. The program requirements and milestones for the 1-year fellowship training were developed in 2021 and 2022. This special article reviews the history of pediatric cardiac anesthesia training, the ACGME application process, the development of program requirements and milestones, and implementation.

Selected 2022 Highlights in Congenital Cardiac Anesthesia.

This article is a review of the highlights of pertinent literature of interest to the congenital cardiac anesthesiologist, and was published in 2022. After a search of the United States National Library of Medicine PubMed database, several topics emerged in which significant contributions were made in 2022. The authors of this manuscript considered the following topics noteworthy to be included in this review-intensive care unit admission after congenital cardiac catheterization interventions, antifibrinolytics in pediatric cardiac surgery, the current status of the pediatric cardiac anesthesia workforce in the United States, and kidney injury and renal protection during congenital heart surgery.

Anaesthesia for non-cardiac surgery in children and young adults with Fontan physiology.

INTRODUCTION: Patients with Fontan physiology require non-cardiac surgery. Our objectives were to characterise perioperative outcomes of patients with Fontan physiology undergoing non-cardiac surgery and to identify characteristics which predict discharge on the same day. MATERIALS AND METHOD: Children and young adults with Fontan physiology who underwent a non-cardiac surgery or an imaging study under anaesthesia between 2013 and 2019 at a single-centre academic children's hospital were reviewed in a retrospective observational study. Continuous variables were compared using the Wilcoxon rank sum test, and categorical variables were analysed using the Chi-square test or Fisher's exact test. Multivariable logistic regression analysis results are presented by adjusted odds ratios with 95% confidence intervals and p values. RESULTS: 182 patients underwent 344 non-cardiac procedures with anaesthesia. The median age was 11 years (IQR 5.2-18), 56.4% were male. General anaesthesia was administered in 289 (84%). 125 patients (36.3%) were discharged on the same day. On multivariable analysis, independent predictors that reduced the odds of same-day discharge included the chronic condition index (OR 0.91 per additional chronic condition, 95% CI 0.76-0.98, p = 0.022), undergoing a major surgical procedure (OR 0.17, 95% CI 0.05-0.64, p = 0.009), the use of intraoperative inotropes (OR 0.48, 95% CI 0.25-0.94, p = 0.031), and preoperative admission (OR = 0.24, 95% CI: 0.1-0.57, p = 0.001). DISCUSSION: In a contemporary cohort of paediatric and young adults with Fontan physiology, 36.3% were able to be discharged on the same day of their non-cardiac procedure. Well selected patients with Fontan physiology can undergo anaesthesia without complications and be discharged same day.

The Role of Chronic Conditions in Outcomes following Noncardiac Surgery in Children with Congenital Heart Disease.

OBJECTIVES: To compare outcomes in children with congenital heart disease (CHD) undergoing noncardiac surgery by presence of chronic conditions and identify associated risk factors. STUDY DESIGN: Retrospective analysis of 14 031 children with CHD who underwent noncardiac surgery in the 2016 Healthcare Cost and Utilization Project Kid's Inpatient Database. Multivariable regression was used to assess patient and hospital factors associated with in-hospital mortality and length of stay (LOS). RESULTS: Overall, 94% had at least 1 chronic condition. The in-hospital mortality rate was 5.6%. Neonates with CHD only had the highest mortality (15.6%); otherwise, children with CHD and at least 1 chronic condition had higher mortality than patients with CHD only (infant 3.93%, child 1.22%, adolescent 1.04% vs 2.34%, 0%, and 0%). Neonates (OR, 15.5; 95% CI, 7.1-34.1 vs adolescent), number of chronic conditions (OR, 1.34; 95% CI, 1.27-1.42), chronic conditions type (circulatory system; OR 2.46; 95% CI, 2.04-2.98), and low socioeconomic status (OR, 1.36; 95% CI, 1.05-1.77) were associated with increased mortality. The median LOS was 20 days (IQR, 5-66). Those with CHD and at least 1 chronic condition had a greater LOS (21 days; IQR, 5-68) than those with CHD only (9 days; IQR, 3-46). Neonates (adjusted coefficient, 44.3; 95% CI, 40.3-48.3 vs adolescent), Black race (adjusted coefficient, 4.78; 95% CI, 2.27-7.3), chronic condition indicator number (adjusted coefficient, 5.17; 95% CI, 4.56-5.78), and subtype (adjusted coefficient, 23.6; 95% CI, 20.4-26.7) were associated with a prolonged LOS. CONCLUSIONS: Most children with CHD who undergo noncardiac surgery have at least 1 chronic condition. Age, chronic conditions type and number, low socioeconomic status, and Black race impart increased risks of in-hospital mortality and prolonged LOS. Further research is needed to evaluate the impact of specific chronic conditions and determine barriers to equitable care.

The Association Between Race and Adverse Postoperative Outcomes in Children With Congenital Heart Disease Undergoing Noncardiac Surgery.

BACKGROUND: The association between race and perioperative outcomes has been evaluated in adult cardiac surgical and in healthy pediatric patients but has not been evaluated in children with congenital heart disease (CHD) presenting for noncardiac procedures. This study compares the incidence of the primary outcome of 30-day mortality and adverse postoperative outcomes following noncardiac surgery between Black and White children with CHD, stratified by severity. METHODS: This is a retrospective study. Comparison of outcomes between Black and White children was performed using the 2012-2018 American College of Surgeons National Surgical Quality Improvement Program Pediatric database and after stratification for severity of CHD and propensity score matching. RESULTS: A total of 55,859 patients were included, and divided into 28,601 minor, 23,839 major, and 3419 severe CHD. Black and White children in each category were matched and compared. Following matching in the overall CHD cohort, there were significantly higher rates of the following adverse postoperative outcomes among Black patients as compared to White patients: 30-day mortality (1.84% vs 1.49%; odds ratio [OR], 1.25; 95% confidence interval [CI], 1.05-1.48; P = .014), composite secondary outcomes (19.90% vs 17.88%; OR, 1.14; 95% CI, 1.08-1.21; P < .001), cardiac arrest (1.42% vs 0.98%; OR, 1.46; 95% CI, 1.19-1.79; P < .001), 30-day reoperation (7.59% vs 6.67%; OR, 1.15; 95% CI, 1.05-1.25; P = .002), and reintubation (3.9% vs 2.95%; OR, 1.34; 95% CI, 1.19-1.52; P < .001). No significant statistical interaction between race and CHD severity was found. Following matching and within the minor CHD cohort, Black children had significantly higher rates of composite secondary outcome (17.44% vs 15.60%; OR, 1.15; 95% CI, 1.05-1.25; P = .002), cardiac arrest (1.02% vs 0.53%; OR, 1.94; 95% CI, 1.37-2.76; P < .001), 30-day reoperation (7.19% vs 5.77%; OR, 1.26; 95% CI, 1.11-1.43; P < .001), and thromboembolic complications (0.49% vs 0.23%; OR, 2.17; 95% CI, 1.29-3.63; P = .003) compared to White children. In the major CHD cohort, Black children had significantly higher rates of 30-day mortality (2.75% vs 2.05%; OR, 1.35; 95% CI, 1.08-1.69; P = .008) and reintubation (4.82% vs 3.72%; OR, 1.32; 95% CI, 1.11-1.56; P = .002). There were no statistically significant differences in outcomes in the severe CHD category for 30-day mortality (3.36% vs 3.3%; OR, 1.02; 95% CI, 0.60-1.73; P = .946), composite secondary outcome (22.65% vs 21.36%; OR, 1.08; 95% CI, 0.86-1.36; P = .517) nor the components of the composite secondary outcomes. CONCLUSIONS: Race is associated with postoperative mortality and complications in children with minor and major CHD undergoing noncardiac surgery. No significant association was observed between race and postoperative outcomes in patients with severe CHD. This is consistent with previous findings wherein in patients with severe CHD, residual lesion burden and functional status is the leading predictor of outcomes following noncardiac surgery. Nevertheless, there is no evidence that the relationship between race and outcomes differs across the CHD severity categories. Future studies to understand the mechanisms leading to the racial difference, including institutional, clinical, and individual factors are needed.

The Practice of Pediatric Cardiac Anesthesiology in the United States.

BACKGROUND: With advances in surgical and catheter-based interventions and technologies in patients with congenital heart disease (CHD), the practice of pediatric cardiac anesthesiology has evolved in parallel with pediatric cardiac surgery and pediatric cardiology as a distinct subspecialty over the past 80 years. To date, there has not been an analysis of the distribution of pediatric cardiac anesthesiologists relative to cardiac and noncardiac procedures in the pediatric population. The primary aim is to report the results of a survey and its subsequent analysis to describe the distribution of pediatric cardiac anesthesiologists relative to pediatric cardiac procedures that include surgical interventions, cardiac catheterization procedures, imaging studies (echocardiography, magnetic resonance, computed tomography, positron emission tomography), and noncardiac procedures. METHODS: A survey developed in Research Electronic Data Capture (REDcap) was sent to the identifiable division chiefs/cardiac directors of 113 pediatric cardiac anesthesia programs in the United States. Data regarding cardiac surgical patients and procedures were collected from the Society of Thoracic Surgeons Congenital Heart Surgery Database (STS-CHD). RESULTS: This analysis reveals that only 38% (117 of 307) of pediatric cardiac anesthesiologists caring for patients with CHD pursued additional training in pediatric cardiac anesthesiology, while 44% (136 of 307) have gained experience during their clinical practice. Other providers have pursued different training pathways such as adult cardiac anesthesiology or pediatric critical care. Based on this survey, pediatric cardiac anesthesiologists devote 35% (interquartile range [IQR], 20%-50%) of clinical time to the care of patients in the cardiac operating room, 25% (20%-35%) of time to the care of patients in the cardiac catheterization laboratory, 10% (5%-10%) to patient care in imaging locations, and 15% covering general pediatric, adult, or cardiac patients undergoing noncardiac procedures. Attempts to actively recruit pediatric cardiac anesthesiologists were reported by 49.2% (29 of 59) of the institutions surveyed. Impending retirement of staff was anticipated in 17% (10 of 59) of the institutions, while loss of staff to relocation was anticipated in 3.4% (2 of 59) of institutions. Thirty-seven percent of institutions reported that they anticipated no immediate changes in current staffing levels. CONCLUSIONS: The majority of currently practicing pediatric cardiac anesthesiologists have not completed a fellowship training in the subspecialty. There is, and will continue to be, a need for subspecialty training to meet increasing demand for services especially with increase survival of this patient population and to replace retiring members of the workforce.

The Evaluation of a Noninvasive Respiratory Volume Monitor in Mechanically Ventilated Neonates and Infants.

BACKGROUND: The respiratory volume monitor (RVM) (ExSpiron, Respiratory Motion Inc, Watertown, MA) uses thoracic impedance technology to noninvasively and continuously measure tidal volume (TV), respiratory rate (RR), and minute ventilation (MV). We aimed to validate the accuracy of the RVM to assess ventilation in neonates and infants by comparing it to spirometry. METHODS: We used the RVM and Respironics NM3 spirometer (Respironics NM3 Respiratory Profile Monitor, Philips Healthcare, Amsterdam, the Netherlands) to record simultaneous and continuous measurements of MV, TV, and RR. The RVM measurements, with and without external calibration, were compared to the Respironics NM3 spirometer using Bland-Altman analysis. The relative errors (Bland-Altman) between RVM and Respironics NM3 were calculated and used to compute individual patient bias, precision, and accuracy as the mean error, the standard deviation (SD) of the error, and the root mean square error. Bland-Altman limits of agreement (LoA) were computed, and equivalence tests were performed. RESULTS: Forty patients were studied to compare the RVM and Respironics NM3 measurements. The mean difference (ie, bias) for MV was 1.8% with 95% LoA, defined as mean ± 1.96 SD, in the range of -12.1% to 15.7%. Similarly, the mean difference (ie, bias) for TV and RR was 1.2% (95% LoA, -11.0% to 13.5%) and 0.6% (95% LoA, -3.7% to 5.0%), respectively. The mean measurement precision of the RVM relative to the Respironics NM3 for MV, TV, and RR was 10.8%, 8.9%, and 8.4%, respectively. The mean measurement accuracy for MV, TV, and RR across patients was 11.0%, 9.7%, and 7.1%, respectively. CONCLUSIONS: The data demonstrate that the RVM measures TV and MV in this cohort with an average relative error of 11% when using patient calibration and 16.9% without patient calibration. The average relative error of RR was 7.1%. The RVM provides accurate measurement of RR, TV, and MV in mechanically ventilated neonates and infants.

Race and Outcomes in Patients with Congenital Cardiac Disease in an Enhanced Recovery Program.

OBJECTIVES: Disparities in perioperative outcomes exist. In addition to patient and socioeconomic factors, racial disparities in outcome measures may be related to issues at the provider and institutional levels. Recognizing a potential role of standardized care in mitigating provider bias, this study aims to compare the perioperative sedation and pain management and consequent outcomes in Enhanced Recovery After Surgery (ERAS) cardiac patients of different races undergoing congenital heart surgery at a single quaternary children's hospital. DESIGN: A retrospective study. SETTING: A single quaternary pediatric hospital. PARTICIPANTS: Patients, infants to adults, undergoing elective congenital cardiac surgery and enrolled in the ERAS protocol from October 2018 to December 2020. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Of the patients, 872 were reviewed and 606 with race information were analyzed. There was no significant difference in intraoperative and postoperative oral morphine equivalent, perioperative sedatives, and regional blockade in Asian or African American patients when compared to White patients. Postoperative pain scores and outcomes among African American and Asian races were also not statistically different when compared to White patients. CONCLUSIONS: Racial disparity in perioperative management and outcomes in patients with standardized ERAS protocols does not exist at the authors' institution. Future comparative studies of ERAS noncardiac patients may provide additional information on the role of standardization in reducing implicit bias.

Selected 2021 Highlights in Congenital Cardiac Anesthesia.

This article is a review of the highlights of pertinent literature of interest to the congenital cardiac anesthesiologist and was published in 2021. After a search of the United States National Library of Medicine PubMed database, several topics emerged where significant contributions were made in 2021. The authors of this manuscript considered the following topics noteworthy to be included in this review: risk stratification in adult congenital heart disease surgery, physician burnout in pediatric cardiac anesthesia, transfusion practice in pediatric congenital heart surgery, and racial disparity and outcomes in pediatric patients with congenital heart disease.

Anesthesia in Children With Pulmonary Hypertension: Clinically Significant Serious Adverse Events Associated With Cardiac Catheterization and Noncardiac Procedures.

OBJECTIVES: To determine the incidence of clinically significant serious adverse events in a contemporary population of pediatric patients with pulmonary hypertension who require anesthesia and identify factors associated with adverse outcomes. DESIGN: A retrospective, cross-sectional study. SETTING: A single-center quaternary-care freestanding children's hospital in the northeastern United States. PARTICIPANTS: Pediatric patients with pulmonary hypertension based on hemodynamic criteria on cardiac catheterization during a 3-year period from 2015 to 2018. INTERVENTIONS: Anesthesia care for cardiac catheterization, noncardiac surgery, and diagnostic imaging. MEASUREMENTS AND MAIN RESULTS: Two hundred forty-nine children underwent 862 procedures, 592 for cardiac catheterization and 278 for noncardiac surgery and diagnostic imaging. The median age was 1.6 years, and the weight was 9.5 lbs. On index catheterization, median pulmonary artery pressure was 36 mmHg, and the pulmonary vascular resistance was 5.1 indexed Wood units. Ten percent of anesthetics were performed with a natural airway, and 80% used volatile anesthetics. Serious adverse events occurred in 26% of procedures (confidence interval [CI], 22%-30%). The rate of periprocedural cardiac arrest was 8 per 1,000 anesthetic administrations. In multivariate analysis, younger age (adjusted odds ratio [aOR], 1.4 per year; CI, 1.1-1.9; p = 0.01), location in the catheterization laboratory (aOR, 5.1; CI, 1.7-16; p = 0.004), and longer procedure duration (aOR, 1.3 per 30 minutes; CI, 1.1-1.4; p = 0.001) were associated with serious adverse events. Patients with a tracheostomy in place were less likely to experience an adverse event (aOR, 0.1; CI, 0.04-0.5; p = 0.001). The primary anesthetic technique was not associated with adverse events. Interventional cardiac catheterization was associated with an increased incidence of adverse events compared with diagnostic catheterization (42% v 21%; OR, 2.23; CI, 1.5-3.3; p < 0.001). CONCLUSIONS: Serious adverse events were common in this cohort. Careful planning to minimize anesthesia time in young children with pulmonary hypertension should be undertaken, and these factors considered in designing risk mitigation strategies.

Perioperative Anesthetic Management of the Pregnant Patient With Congenital Heart Disease Undergoing Cardiac Intervention: A Systematic Review.

Maternal congenital heart disease is increasingly prevalent, and has been associated with a significantly increased risk of maternal, obstetric, and neonatal complications. For patients with CHD who require cardiac interventions during pregnancy, there is little evidence-based guidance with regard to optimal perioperative management. The periprocedural management of pregnant patients with congenital heart disease requires extensive planning and a multidisciplinary teams-based approach. Anesthesia providers must not only be facile in the management of adult congenital heart disease, but cognizant of the normal, but significant, physiologic changes of pregnancy.

Stratification of Bleeding Risk Using Thromboelastography in Children on Extracorporeal Membrane Oxygenation Support.

OBJECTIVES: Patients undergoing extracorporeal membrane oxygenation are at high risk for bleeding and thrombotic complications. Current laboratory methods for assessing the coagulation system may be imprecise and complicate clinical decision-making. We hypothesize that thromboelastography may be more strongly associated with bleeding events than traditional methods and can aid extracorporeal membrane oxygenation coagulation management. DESIGN: In a retrospective study, 40 patients with congenital heart disease requiring extracorporeal membrane oxygenation support yielded a total of 159 patient days of data for thromboelastography analysis. SETTING: Pediatric cardiac ICU at a single institution. SUBJECTS: Pediatric patients (≤ 18 yr) with congenital heart disease requiring extracorporeal membrane oxygenation support. INTERVENTIONS: None. METHODS: Thromboelastography was performed on whole blood samples collected 6-12 hours following extracorporeal membrane oxygenation initiation and daily for the duration of extracorporeal membrane oxygenation. Bleeding during each 24-hour period was defined as need for re-exploration or need for blood transfusion. Associations between thromboelastography variables and bleeding over each 24-hour period (bleeding vs nonbleeding days) were assessed using mixed effects logistic regression and classification and regression tree analysis. MEASUREMENTS AND MAIN RESULTS: Bleeding occurred in 25 patients (63%), contributing 87 bleeding days (55% extracorporeal membrane oxygenation days) for analysis. The probability of bleeding within the 24-hour period was not associated with activated partial thromboplastin time (p = 0.6) or anti-Xa levels (p = 0.3) on that day. The strongest correlate of bleeding was a maximum amplitude less than 55.4 mm on thromboelastography (odds ratio, 3.28; 95% CI, 1.63-6.60; p < 0.001). Bleeding occurred on 73% versus 35% of extracorporeal membrane oxygenation days for maximum amplitude less than 55.4 mm versus greater than or equal to 55.4 mm, respectively. Bleeding occurred on all days when a combination of maximum amplitude less than 55.4 mm and a reaction time greater than 12.9 minutes was present. The lowest risk of bleeding (28% of patient days) was associated with maximum amplitude greater than or equal to 55.4 mm and plasma fibrinogen greater than 345 mg/dL. CONCLUSIONS: Thromboelastography-derived variables maximum amplitude and reaction time, along with plasma fibrinogen levels, can help predict bleeding events in children on extracorporeal membrane oxygenation support. Research based on larger patient samples is needed to confirm the specific thresholds identified for bleeding risk stratification for extracorporeal membrane oxygenation anticoagulation management.

Airway Abnormalities in Patients With Congenital Heart Disease: Incidence and Associated Factors.

OBJECTIVES: Airway abnormalities complicate the perioperative course of patients with congenital heart disease (CHD), leading to significant morbidity and mortality. The literature describing airway abnormalities in those patients is scarce. This study aimed to determine the incidence of airway abnormalities in CHD patients and identify associated factors, genetic syndromes, and cardiac diagnoses. DESIGN: Retrospective study conducted after institutional review board approval. SETTING: Tertiary children's hospital. PARTICIPANTS: Patients presenting for cardiac diagnostic, interventional, or surgical procedures from 2012 to 2018. A total of 9,495 encounters were reviewed. EXCLUSION CRITERIA: age >18 years. Methods/Interventions: Age, weight, sex, intubation technique, number of intubation attempts, and difficult intubation (DI) were recorded. Using the International Classification of Diseases, Ninth and Tenth Revisions codes, genetic syndromes, acquired and congenital airway abnormalities, and cardiac diagnoses were identified. Multivariate generalized estimating equations modeling was used to identify independent predictors of airway abnormalities. RESULTS: A total of 4,797 patients, with 8,657 encounters were included. The median age was 1.3 years (interquartile range [IQR]: 0.2-6.0) and weight was 9.2 kg (IQR: 4.3-19.2), and 55% were male. A total of 16.7% had at least 1 genetic syndrome; 8.5% had congenital airway abnormalities and 9.7% acquired. Incidence of DI was 1.1%. The most common syndromes were Down, 22q11.2 microdeletion, and CHARGE. The most frequent congenital airway abnormalities were laryngomalacia and bronchomalacia, and the most frequent acquired were partial and total vocal cord paralysis. CONCLUSION: The likelihood of a coexistent airway abnormality should be considered in premature CHD patients, weight <10 kg, and in those with specific cardiac lesions and a concomitant genetic syndrome. Preoperative identification of patients at high risk of airway abnormalities is useful in planning their perioperative airway management.

Predictors of Increased Lactate in Neonatal Cardiac Surgery: The Impact of Cardiopulmonary Bypass.

OBJECTIVE: Hyperlactatemia develops intraoperatively during cardiac surgery and is associated with postoperative mortality. This study aimed to determine the factors that lead to an increase in lactate during cardiopulmonary bypass (CPB) in neonates undergoing cardiac surgery. DESIGN: Retrospective study from July 2015 to December 2018. SETTING: Academic tertiary children's hospital. PARTICIPANTS: The study comprised 376 neonates. INTERVENTIONS: No interventions were performed. MEASUREMENTS AND MAIN RESULTS: Lactate measurements at prebypass, upon initiation of CPB and before coming off CPB, last in the operating room, and first in the cardiac intensive care unit were collected. The changes in lactate levels were compared using the nonparametric Wilcoxon signed rank test for paired data. Univariate and multivariate median regression models of the change during CPB were determined. The cohort characteristics were male (60%), median age 5 days (range 1-30), and weight 3.2 kg (range 1.5-4.7). Most patients had a STAT score of 4 (45%) or 5 (23%). Significant increases in lactate were observed from pre-CPB to start of CPB (p < 0.001) and from start to end of CPB (p < 0.001). In the multivariate regression analysis, duration of circulatory arrest (coefficient = 1.216; 95% confidence interval [CI] 0.754-1.678; p < 0.001), duration of mean arterial pressure < 25 mmHg (coefficient = 0.423; 95% CI 0.196-to- 0.651; p < 0.001), and duration of mean arterial pressure between 35 and 39 mmHg (coefficient = -0.246; 95% CI -0.397 to -0.095; p = 0.001) were identified as significant independent predictors of the lactate change per 30- minutes duration. CONCLUSION: These results emphasized the importance of blood pressure management during CPB and the importance of the duration of circulatory arrest.

Bilateral Erector Spinae Blocks Decrease Perioperative Opioid Use After Pediatric Cardiac Surgery.

OBJECTIVE: The present study examined the feasibility and efficacy of continuous bilateral erector spinae blocks for post-sternotomy pain in pediatric cardiac surgery. DESIGN: Prospective cohort study; patients were retrospectively matched 1:2 to control patients. Conditional logistic regression was used to compare dichotomous outcomes, and generalized linear models were used for continuous measures, both accounting for clusters. SETTING: Quaternary children's hospital, university setting. PARTICIPANTS: The study comprised 10 children ages five-to-17 years undergoing elective cardiac surgery requiring cardiopulmonary bypass. INTERVENTIONS: Ultrasound-guided bilateral erector spinae blocks at the conclusion of the cardiac surgical procedure, with postoperative infusion of ropivacaine until chest tube removal. Postoperative management otherwise followed standardized guidelines. MEASUREMENTS AND MAIN RESULTS: Patient characteristics were similar in the two groups. The median time to completion of the bilateral blocks was 16.0 minutes (interquartile range [IQR] 14.8-19.3), and no major adverse events were identified. Pain scores were low in both groups. Postoperative opioid use at 48 hours, rendered as oral morphine equivalents, was significantly reduced in the patients receiving the blocks. Cluster-adjusted squared-root-transformed means ± standard error were 0.89 ± 0.06 mg/kg for patients receiving the blocks versus 1.05 ± 0.06 mg/kg for control patients (p = 0.04; raw medians 0.81 [IQR 0.41-1.04] v 1.10 [IQR 0.78-1.35] mg/kg, respectively). There were no differences in recovery metrics, length of stay, or complications. CONCLUSIONS: Bilateral erector spinae blocks were associated with a reduction in opioid use in the first 48 hours after pediatric cardiac surgery compared with a matched cohort from the enhanced recovery program. Larger studies are needed to determine whether this can result in an improvement in recovery and patient satisfaction.

Elective Non-Urgent Balloon-Atrial Septostomy in Infants with d-Transposition of the Great Arteries Does Not Eliminate the Need for PGE1 Therapy at the Time of Arterial Switch Operation.

Once a mainstay in the treatment of neonates with d-transposition of the great arteries (d-TGA), the application of balloon atrial septostomy (BAS) in the d-TGA population has become more selective. Currently, there is no clear evidence for or against a selective BAS strategy. The aims of this single-center retrospective study were to determine the incidence of BAS in the neonatal d-TGA population in the current era, to measure the rate of procedural success, and to compare the outcomes and complication rates of patients who underwent BAS to those who underwent neonatal ASO alone. Between 2012 and 2018, 147 patients with d-TGA underwent initial medical management and ASO, 73 of which underwent BAS. The percentage of patients that underwent BAS decreased from 73 to 33% over the study time period. In patients with d-TGA with intact ventricular septum, 33% of patients remained off of PGE1 at the time of surgery regardless of BAS. In d-TGA with ventricular septal defect, 85.7% of those that underwent BAS and 54.1% of those who did not remained off of PGE1 at the time of surgery, however, this difference did not reach statistical significance. In this single institution retrospective cohort of patients with d-TGA, the performance of a technically successful balloon atrial septostomy did not eliminate the need for PGE1 therapy at the time of definitive ASO. This was true regardless of the presence or absence of a ventricular septal defect.