Kids grow up so fast: national patterns of positive drug/alcohol screens among pediatric trauma patients.

BACKGROUND: National guidelines recommend screening all trauma patients for drug and alcohol use beginning at age 12, but no national data have examined rates of screening or positive results in this population. METHODS: We examined national testing rates and results among all trauma patients under 21 years old in the 2017 American College of Surgeons Trauma Quality Programs (TQP) database. RESULTS: Of a cohort of n = 157,450 pediatric and adolescent trauma patients, n = 45,443 (28.9%) were screened, and n = 16,662 (36.7%) of those had a positive result. While both testing and positive results increased with age, testing rates were only 61.7% by age 20 and the prevalence of positive results was significant even at younger ages. Cannabinoids were the most commonly detected substance, followed by alcohol, and then opioids. CONCLUSIONS: These national data support the need for further efforts to increase screening rates and provide structured interventions to mitigate the consequences of substance abuse. IMPACT: These data provide the first national evidence of underutilization of drug and alcohol screening in pediatric and adolescent trauma patients, with substantial rates of positive screens among those tested. Cannabinoids were the most commonly detected substance, followed by alcohol and then opioids. These data should guide physicians' and policymakers' efforts to improve screening in this high-risk population, which will amplify the potential benefits of using the trauma admission as a critical opportunity to intervene with structured programs to mitigate the consequences of substance abuse.

A Study of Practice Behavior for Endotracheal Intubation Site for Children With Congenital Heart Disease Undergoing Surgery: Impact of Endotracheal Intubation Site on Perioperative Outcomes-An Analysis of the Society of Thoracic Surgeons Congenital Cardiac Anesthesia Society Database.

BACKGROUND: In adults undergoing cardiopulmonary bypass surgery, oral intubation is typically preferred over nasal intubation due to reduced risk of sinusitis and infection. In children, nasal intubation is more common and sometimes preferred due to perceived benefits of less postoperative sedation and a lower risk for accidental extubation. This study sought to describe the practice of nasal intubation in the pediatric population undergoing cardiopulmonary bypass surgery and assess the risks/benefits of a nasal route against an oral one. METHODS: Patients <18 years of age in the Society of Thoracic Surgeons Congenital Heart Surgery Database between January 2010 and December 2015 were included. Patients with a preoperative endotracheal tube, tracheostomy, or known airway anomalies were excluded. Multivariable modeling was used to assess the association between route of tracheal intubation and a composite measure of infection risk (wound infection, mediastinitis, septicemia, pneumonia, and endocarditis). Covariates were included to adjust for important patient characteristics (eg, weight, age, comorbidities), case complexity, and center effects. Secondary outcomes included length of intubation, hospital length of stay, and airway complications including accidental extubations. We also performed a subanalysis in children <12 months of age in high-volume centers (>100 cases/y) examining how infection risk may change with age at the time of surgery. RESULTS: Nasal intubation was used in 41% of operations in neonates, 38% in infants, 15% in school-aged children, and 2% in adolescents. Nasal intubation appeared protective for accidental extubation only in neonates (P = .02). Multivariable analysis in infants and neonates showed that the nasal route of intubation was not associated with the infection composite (relative risk [RR], 0.84; 95% CI, 0.59-1.18) or a shorter length of stay (RR, 0.992; 95% CI, 0.947-1.039), but was associated with a shorter intubation length (RR, 0.929; 95% CI, 0.869-0.992). Restricting to high-volume centers showed a significant interaction between age and intubation route with a risk change for infection occurring between approximately 6-12 months of age (P = .003). CONCLUSIONS: While older children undergoing nasal intubation trend similar to the adult population with an increased risk of infection, nasal intubation in neonates and infants does not appear to carry a similar risk. Nasal intubation in neonates and infants may also be associated with a shorter intubation length but not a shorter length of stay. Prospective studies are required to better understand these complex associations.

Double-Blind, Randomized, Placebo-Controlled Trial Comparing the Effects of Antithrombin Versus Placebo on the Coagulation System in Infants with Low Antithrombin Undergoing Congenital Cardiac Surgery.

OBJECTIVES: To determine whether precardiopulmonary bypass (CPB) normalization of antithrombin levels in infants to 100% improves heparin sensitivity and anticoagulation during CPB and has beneficial effects into the postoperative period. DESIGN: Randomized, double-blinded, placebo-controlled prospective study. SETTING: Multicenter study performed in 2 academic hospitals. PARTICIPANTS: The study comprised 40 infants younger than 7 months with preoperative antithrombin levels <70% undergoing CPB surgery. INTERVENTIONS: Antithrombin levels were increased with exogenous antithrombin to 100% functional level intraoperatively before surgical incision. MEASUREMENTS AND MAIN RESULTS: Demographics, clinical variables, and blood samples were collected up to postoperative day 4. Higher first post-heparin activated clotting times (sec) were observed in the antithrombin group despite similar initial heparin dosing. There was an increase in heparin sensitivity in the antithrombin group. There was significantly lower 24-hour chest tube output (mL/kg) in the antithrombin group and lower overall blood product unit exposures in the antithrombin group as a whole. Functional antithrombin levels (%) were significantly higher in the treatment group versus placebo group until postoperative day 2. D-dimer was significantly lower in the antithrombin group than in the placebo group on postoperative day 4. CONCLUSION: Supplementation of antithrombin in infants with low antithrombin levels improves heparin sensitivity and anticoagulation during CPB without increased rates of bleeding or adverse events. Beneficial effects may be seen into the postoperative period, reflected by significantly less postoperative bleeding and exposure to blood products and reduced generation of D-dimers.

Variation in Gastrostomy Tube Placement in Premature Infants in the United States.

OBJECTIVE: To describe the variation in surgical gastrostomy tube (SGT) placement in premature infants among neonatal intensive care units (NICUs) in the United States. STUDY DESIGN: We identified 8,781 premature infants discharged from 114 NICUs in the Pediatrix Medical Group from 2010 to 2012. The outcome of interest was SGT placement prior to discharge home from an NICU. Unadjusted proportions and adjusted risk estimates were calculated to quantify variation observed among individual NICUs. RESULTS: SGT placement occurred in 360 of 8,781 (4.1%) of infants. Across NICUs, any gastrostomy tube placement ranged from none in 45 NICUs up to 19.6%. Adjusted risk estimates for factors associated with SGT placement included gestational age at birth (odds ratio [OR]: 0.7/week, 95% confidence interval[CI]: [0.65, 0.75]), small for gestational age status (OR: 2.78 [2.09, 3.71]), administration of antenatal steroids (OR: 0.69 [0.52, 0.92]), Hispanic ethnicity (OR: 0.54 [0.37, 0.78]), and higher 5-minute Apgar scores (7-10, OR: 0.54 [0.37, 0.79]). CONCLUSION: Individual NICU center has a strong clinical effect on the probability of SGT placement relative to other medical factors. Future work is needed to understand the cause of this variation and the degree to which it represents over or under use of gastrostomy tubes.

Variation in Adult Traumatic Brain Injury Outcomes in the United States.

OBJECTIVE: To ascertain the degree of variation, by state of acute care hospitalization, in outcomes associated with traumatic brain injury (TBI) in an adult population. SETTING: All acute care hospitals in 21 states in the United States in the year 2010. PARTICIPANTS: Adult (> 18 years) patients (N = 95 546) admitted to a hospital with a moderate or severe TBI. DESIGN: Retrospective cohort study using data from State Inpatient Databases from Agency for Healthcare Research and Quality's Healthcare Cost and Utilization Project. MAIN MEASURES: Inpatient mortality and discharge to inpatient rehabilitation. RESULTS: The adjusted risk of inpatient mortality varied between states by as much as 40%, with age, severity of injury, and insurance status as significant factors in both outcomes. The adjusted risk of discharge to inpatient rehabilitation varied between by more than 100% among the states measured. CONCLUSIONS: There was clinically significant variation between states in inpatient mortality and rehabilitation discharge after adjusting for variables known to affect each outcome. Future efforts should be focused on identifying the causes of this state-to-state variation, how these causes affect patient outcomes, and may serve as a guide to further standardization of treatment for traumatic brain injury across the United States.

Percutaneous endoscopic gastrostomy vs surgical gastrostomy in infants with congenital heart disease.

BACKGROUND: Infants with congenital heart disease often require feeding tube placement to supplement oral intake. Gastrostomy tubes may be placed by either surgical or percutaneous endoscopic methods, but there is currently no data comparing outcomes of these procedures in this population. AIMS: The aim of our retrospective study was to investigate the perioperative outcomes between the 2 groups to determine if there are clinically significant differences. METHODS: We reviewed the charts of all infants with congenital heart disease at a single academic institution having isolated surgical or percutaneous endoscopic gastrostomy tube placement from January 2011 to December 2015. Anesthetic time, defined by cumulative minimum alveolar concentration hours of exposure to volatile anesthetic, was the primary outcome. Operative time, intraoperative complications, and postoperative intensive care admissions were secondary outcomes. RESULTS: One hundred and one infants with congenital heart disease were included in this study. Anesthetic exposure was shorter in the endoscopic group than the surgical group (0.20 MAC-hours vs 0.56 MAC-hours, 95% confidence interval 0.23, 0.49, P < .001). Average operative times were also shorter in the endoscopic gastrostomy vs the surgical group (8 ± 0.7 minutes vs 35 ± 1.3 minutes, 95% confidence interval 23.7, 31.0, P < .001). Adjusting for prematurity and preoperative risk category, the surgical group was associated with a 3.45 fold increase in the likelihood of a higher level of care postoperatively (95% confidence interval 1.20, 9.90, P = .02). CONCLUSION: In infants with congenital heart disease, percutaneous endoscopic gastrostomy placement is associated with reduced anesthetic exposure and fewer postoperative intensive care unit admissions compared to surgical gastrostomy.

Epidemiologic Analysis of Elective Operative Procedures in Infants Less Than 6 Months of Age in the United States.

BACKGROUND: This study uses publicly available data to analyze the total number of elective, potentially deferrable operative procedures involving infants <6 months of age in the United States. We investigated the factors associated with the performance of these procedures in this population. METHODS: The State Ambulatory Surgery Database was used to identify patients in California, North Carolina, New York, and Utah during the years of 2007-2010 who were younger than 6 months of age at the time that they underwent outpatient (ambulatory) surgery. Operations that could reasonably be postponed until 6 months of age were classified as potentially deferrable procedures. Hernia repairs were analyzed separately from other deferrable procedures. Primary outcomes included the total number of elective procedures and the number and rates of potentially deferrable procedures per state per year in this population. RESULTS: Over the study period, a total of 27,540 procedures were identified as meeting inclusion criteria; of those, 7832 (28%) were classified as potentially deferrable, 4315 of which were hernia repairs. The average rates of potentially deferrable nonhernia procedures in California, North Carolina, New York, and Utah were 8.3, 43.8, 30.0, and 11.7 per 10,000 person-years, respectively. In multivariable analysis, private insurance (odds ratio [OR] = 1.36), self-pay status (OR = 1.50), and treatment in a different state (OR = 0.48-3.16) were independent predictors of a potentially deferrable procedure being performed on an infant younger than 6 months. CONCLUSIONS: Potentially deferrable procedures are still performed in infants <6 months of age. There appears to be significant variation in timing of these procedures among states. Insurance status and geography may be independent predictors of a procedure being potentially deferrable.

Natural history of nonimmune-mediated thrombocytopenia and acute kidney injury in pediatric open-heart surgery.

OBJECTIVE: Thrombocytopenia and acute kidney injury (AKI) are common following pediatric cardiac surgery with cardiopulmonary bypass (CPB). However, the relationship between postoperative nadir platelet counts and AKI has not been investigated in the pediatric population. Our objective was to investigate this relationship and examine independent predictors of AKI. DESIGN: After IRB approval, we performed a retrospective review of the institution's medical records and database. SETTING: This study was performed at a single institution over a 5-year period. PATIENTS: We included patients <21 years of age undergoing cardiac surgery with CPB. INTERVENTIONS: Demographics, laboratory, and surgical characteristics were captured, and clinical event rates were recorded. MEASUREMENTS: Descriptive statistics were used to evaluate platelet and creatinine distributions. T-tests and chi-squared tests were used to compare characteristics among Acute Kidney Injury Network groups. Multivariable logistic and ordinal logistic regression models were used to determine the association of our predictor of interest, postoperative nadir platelet count and AKI. RESULTS: Eight hundred and fourteen patients (23% infants and 23% neonates) were included in the analysis. Postoperative platelet counts decreased 48% from baseline reaching a mean nadir value of 150 × 109 ·l-1 on postoperative day 3. AKI occurred in 37% of patients including 13%, 17%, and 6% with Acute Kidney Injury Network stages 1, 2, and 3, respectively. The magnitude of nadir platelet counts correlated with the severity of AKI. Independent predictors of severity of AKI include nadir platelet counts, CPB time, Aristotle score, patient weight, intra-operative packed red blood cell transfusion, and having a heart transplant procedure. CONCLUSIONS: In pediatric open-heart surgery, thrombocytopenia and AKI occur commonly following CPB. Our findings show a strong association between nadir platelet counts and the severity of AKI.

In Vitro Evaluation of the Fresenius Kabi CATSmart Autotransfusion System.

Use of autotransfusion systems to collect, wash, and concentrate shed blood during surgical procedures is a widely used method for reducing postoperative anemia and the need for blood transfusions. The aim of this study was to evaluate the CATSmart Continuous Autotransfusion System wash program performance with small (200 or 700 mL) and large volumes (1,000 mL) of shed blood and to determine non-inferiority of the CATSmart to the C.A.T.S plus system. Human whole blood was collected in citrate phosphate dextrose, diluted, and divided into two aliquots to be processed as a pair using the C.A.T.S plus and CATSmart systems with their corresponding wash programs: low-volume, high quality/smart, or emergency wash. Final packed red cell product was analyzed for red blood cell (RBC), white blood cell, and platelet counts; hemoglobin; hemolysis; RBC recovery rates; and elimination of albumin, total protein, and potassium. The mean hematocrit (HCT) after processing with CATSmart and C.A.T.S plus systems were 59.63% and 57.71%, respectively. The calculated overall RBC recovery rates on the CATSmart and C.A.T.S plus systems were 85.41% and 84.99%, respectively. Elimination of albumin (97.5%, 98.0%), total proteins (97.1%, 97.5%), and potassium (92.1%, 91.9%) were also calculated for the CATSmart and C.A.T.S plus systems. The CATSmart and C.A.T.S plus systems both provided a high-quality product in terms of HCT, protein elimination, and hemolysis rates across the range of tested shed blood volumes and all wash programs. The study was able to confirm the CATSmart is non-inferior to the C.A.T.S plus system.

Validation of ICDPIC software injury severity scores using a large regional trauma registry.

BACKGROUND: Administrative or quality improvement registries may or may not contain the elements needed for investigations by trauma researchers. International Classification of Diseases Program for Injury Categorisation (ICDPIC), a statistical program available through Stata, is a powerful tool that can extract injury severity scores from ICD-9-CM codes. We conducted a validation study for use of the ICDPIC in trauma research. METHODS: We conducted a retrospective cohort validation study of 40,418 patients with injury using a large regional trauma registry. ICDPIC-generated AIS scores for each body region were compared with trauma registry AIS scores (gold standard) in adult and paediatric populations. A separate analysis was conducted among patients with traumatic brain injury (TBI) comparing the ICDPIC tool with ICD-9-CM embedded severity codes. Performance in characterising overall injury severity, by the ISS, was also assessed. RESULTS: The ICDPIC tool generated substantial correlations in thoracic and abdominal trauma (weighted κ 0.87-0.92), and in head and neck trauma (weighted κ 0.76-0.83). The ICDPIC tool captured TBI severity better than ICD-9-CM code embedded severity and offered the advantage of generating a severity value for every patient (rather than having missing data). Its ability to produce an accurate severity score was consistent within each body region as well as overall. CONCLUSIONS: The ICDPIC tool performs well in classifying injury severity and is superior to ICD-9-CM embedded severity for TBI. Use of ICDPIC demonstrates substantial efficiency and may be a preferred tool in determining injury severity for large trauma datasets, provided researchers understand its limitations and take caution when examining smaller trauma datasets.

Variation in pediatric traumatic brain injury outcomes in the United States.

OBJECTIVE: To ascertain the degree of variation, by state of hospitalization, in outcomes associated with traumatic brain injury (TBI) in a pediatric population. DESIGN: A retrospective cohort study of pediatric patients admitted to a hospital with a TBI. SETTING: Hospitals from states in the United States that voluntarily participate in the Agency for Healthcare Research and Quality's Healthcare Cost and Utilization Project. PARTICIPANTS: Pediatric (age ≤ 19 y) patients hospitalized for TBI (N=71,476) in the United States during 2001, 2004, 2007, and 2010. INTERVENTIONS: None. MAIN OUTCOME MEASURES: Primary outcome was proportion of patients discharged to rehabilitation after an acute care hospitalization among alive discharges. The secondary outcome was inpatient mortality. RESULTS: The relative risk of discharge to inpatient rehabilitation varied by as much as 3-fold among the states, and the relative risk of inpatient mortality varied by as much as nearly 2-fold. In the United States, approximately 1981 patients could be discharged to inpatient rehabilitation care if the observed variation in outcomes was eliminated. CONCLUSIONS: There was significant variation between states in both rehabilitation discharge and inpatient mortality after adjusting for variables known to affect each outcome. Future efforts should be focused on identifying the cause of this state-to-state variation, its relationship to patient outcome, and standardizing treatment across the United States.

Perioperative management of carotid endarterectomy: a survey of clinicians' backgrounds and practices.

OBJECTIVE: To examine current trends in anesthetic practice for management of carotid endarterectomy (CEA) and how practice may differ by groups of practitioners. DESIGN: An online survey was sent to the Society of Cardiovascular Anesthesiologists and Society of Neuroscience, Anesthesiology, and Critical Care e-mail list servers. Responses were voluntary. SETTING: Academic medical centers and community-based hospitals providing perioperative care for a CEA in the United States and abroad. PARTICIPANTS: Anesthesiologists who provide perioperative care for patients undergoing a CEA. INTERVENTIONS: None MEASUREMENTS AND MAIN RESULTS: Of 664 responders (13% response rate), most (66%) had subspecialty training in cardiovascular anesthesiology, had been in practice more than 10 years (68%), and practiced in the United States (US, 81%). About 75% of responders considered general anesthesia as a preferable technique for CA, and about 89% of responders provided it in real life, independent of subspecialty training. The most preferable intraoperative neuromonitoring was cerebral oximetry (28%), followed by EEG (24%), and having an awake patient (23%). Neuroprotection was not considered by 33% of responders, and upon conclusion of a case, 59% preferred an awake patient for extubation, while 15% preferred a deep extubation. Neuroanesthesiologists and non-US responders more often risk stratify patients for perioperative cerebral hyperperfusion syndrome, compared with cardiac anesthesiologists and US responders (p=0.004 and p<0.005, respectively). Additionally, reported management strategies vary substantially from anesthetic practice 20 years ago. CONCLUSIONS: Although there are areas of perioperative management in which there seems to be agreement for the CEA, there are also areas of divergent practice that could represent potential for improvement in overall outcomes. There are many potential reasons to explain divergence in practice by location or subspecialty training, but it remains unclear what the "best practice" may be. Future studies examining outcomes after carotid endarterectomy should include perioperative anesthetic management strategies to help delineate "best practice."

Postnatal Brain Trajectories and Maternal Intelligence Predict Childhood Outcomes in Complex CHD.

Objective: To determine whether early structural brain trajectories predict early childhood neurodevelopmental deficits in complex CHD patients and to assess relative cumulative risk profiles of clinical, genetic, and demographic risk factors across early development. Study Design: Term neonates with complex CHDs were recruited at Texas Children's Hospital from 2005-2011. Ninety-five participants underwent three structural MRI scans and three neurodevelopmental assessments. Brain region volumes and white matter tract fractional anisotropy and radial diffusivity were used to calculate trajectories: perioperative, postsurgical, and overall. Gross cognitive, language, and visuo-motor outcomes were assessed with the Bayley Scales of Infant and Toddler Development and with the Wechsler Preschool and Primary Scale of Intelligence and Beery-Buktenica Developmental Test of Visual-Motor Integration. Multi-variable models incorporated risk factors. Results: Reduced overall period volumetric trajectories predicted poor language outcomes: brainstem ((ß, 95% CI) 0.0977, 0.0382-0.1571; p = 0.0022) and white matter (0.0023, 0.0001-0.0046; p = 0.0397) at 5 years; brainstem (0.0711, 0.0157-0.1265; p = 0.0134) and deep grey matter (0.0085, 0.0011-0.0160; p = 0.0258) at 3 years. Maternal IQ was the strongest contributor to language variance, increasing from 37% at 1 year, 62% at 3 years, and 81% at 5 years. Genetic abnormality's contribution to variance decreased from 41% at 1 year to 25% at 3 years and was insignificant at 5 years. Conclusion: Reduced postnatal subcortical-cerebral white matter trajectories predicted poor early childhood neurodevelopmental outcomes, despite high contribution of maternal IQ. Maternal IQ was cumulative over time, exceeding the influence of known cardiac and genetic factors in complex CHD, underscoring the importance of heritable and parent-based environmental factors.

Opioid and non-opioid analgesic prescribing practices for pediatric adenotonsillectomy in a tertiary care center.

IMPORTANCE: The U.S. is in an opioid epidemic with greater than 40,000 deaths annually. Pediatric adenotonsillectomy is one of the most common and painful otolaryngology surgeries performed, often associated with opioid prescriptions. OBJECTIVE: To understand postoperative prescribing practices of adenotonsillectomy in a tertiary care institution and associated postoperative emergency department (ED) visits. DESIGN: Descriptive analysis of retrospective cohort data. SETTING: Tertiary academic healthcare institution. PARTICIPANTS: Pediatric patients <18yo undergoing adenotonsillectomy between 2013 and 2016. INTERVENTIONS/EXPOSURES: Postoperative analgesic regimens assessed including opioid and non-opioid analgesic prescriptions upon discharge from tonsillectomy surgery. MAIN OUTCOMES AND MEASURES: Main outcomes included ED presentation within 30-days of surgery and reoperation. Secondary outcomes included reason for ED presentation and relation to prescribed analgesics. Data was analyzed between November 2021-February 2022. RESULTS: 200 patients were included in the study with 69% prescribed opioids, and 51% prescribed non-opioid analgesics. Number of opioid doses ranged widely with a median of 37 (Q1, Q3: 0, 62). There were no demographic differences in patients prescribed opioids from those who were not. Of those patients who presented to the ED, 81% were not specifically prescribed acetaminophen (p < 0.001). Regression analysis models were not predictive of postoperative analgesic regimen or 30-day ED presentation (p > 0.05) CONCLUSIONS: Wide ranges of post tonsillectomy prescribing practices currently exist in our institution. Prescribing acetaminophen may help to reduce 30-day ED presentation rate. Larger prospective studies are needed to optimize pain control regimens and reduce variability of opioid prescribing practices. Standardization of postoperative pain medication doses may also reduce postoperative ED presentations.

Executive function and depression as independent risk factors for postoperative delirium.

BACKGROUND: Postoperative delirium has been associated with greater complications, medical cost, and increased mortality during hospitalization. Recent evidence suggests that preoperative executive dysfunction and depression may predict postoperative delirium; however, the combined effect of these risk factors remains unknown. This study examined the association among preoperative executive function, depressive symptoms, and established clinical predictors of postoperative delirium among 998 consecutive patients undergoing major noncardiac surgery. METHODS: A total of 998 patients were screened for postoperative delirium (n = 998) using the Confusion Assessment Method as well as through retrospective chart review. Patients underwent cognitive, psychosocial, and medical assessments preoperatively. Executive function was assessed using the Concept Shifting Task, Letter-Digit Coding, and a modified Stroop Color Word Interference Test. Depression was assessed by the Beck Depression Inventory. RESULTS: Preoperative executive dysfunction (P = 0.007) and greater levels of depressive symptoms (P = 0.049) were associated with a greater incidence of postoperative delirium, independent of other risk factors. Secondary analyses of cognitive performance demonstrated that the Stroop Color Word Interference Test, the executive task with the greatest complexity in this battery, was more strongly associated with postoperative delirium than simpler tests of executive function. Furthermore, patients exhibiting both executive dysfunction and clinically significant levels of depression were at greatest risk for developing delirium postoperatively. CONCLUSIONS: Preoperative executive dysfunction and depressive symptoms are predictive of postoperative delirium among noncardiac surgical patients. Executive tasks with greater complexity are more strongly associated with postoperative delirium relative to tests of basic sequencing.

Measures of executive function and depression identify patients at risk for postoperative delirium.

BACKGROUND: Postoperative delirium is associated with increased morbidity and mortality. Preexisting cognitive impairment and depression have been frequently cited as important risk factors for this complication. This prospective cohort study was designed to determine whether individuals who perform poorly on preoperative cognitive tests and/or exhibited depressive symptoms would be at high risk for the development of postoperative delirium. METHODS: One hundred nondemented patients, aged 50 yr and older, scheduled to undergo major, elective noncardiac surgery completed a preoperative test battery that included measures of global cognition, executive function, and symptoms of depression. Known preoperative risk factors for delirium were collected and examined with the results of the preoperative test battery to determine the independent predictors of delirium. RESULTS: The overall incidence of delirium was 16% and was associated with increased hospital duration of stay (P < 0.05) and an increased incidence of postoperative complications (P < 0.01). Delirious subjects did not differ from their nondelirious cohorts with regard to their preoperative global cognitive function, preexisting medical comorbidities, age, anesthetic management, or history of alcohol use. Preoperative executive scores (P < 0.001) and depression (P < 0.001), as measured by the Trail Making B test and Geriatric Depression Scale-Short Form, respectively, were found to be independent predictors of postoperative delirium. CONCLUSIONS: Low preoperative executive scores and depressive symptoms independently predict postoperative delirium in older individuals. A rapid, simple test combination including tests of executive function and depression could improve physicians' ability to recognize patients who might benefit from a perioperative intervention strategy to prevent postoperative delirium.

Complete Obstruction of Endotracheal Tube in an Infant with a Retropharyngeal and Anterior Mediastinal Abscess.

Intraoperative ventilatory failure is not an uncommon complication; however, acute endotracheal obstruction by a foreign body or blood clot can be difficult to quickly discriminate from other causes. Once the diagnosis is made, quick action is needed to restore ventilation. The ultimate solution is to exchange the endotracheal tube; however, there can be other ways of resolving this in situations where reintubation would be difficult or unsafe. This case report discusses such an event in an infant with multiple airway challenges including a retropharyngeal and anterior mediastinal abscess. We have also formulated a pathway based on various case reports involving complete ETT obstruction.