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  1. Chong SL, Ong GY, Zheng CQ, Dang H, Ming M, Mahmood M, et al.
    Neurosurgery, 2021 07 15;89(2):283-290.
    PMID: 33913493 DOI: 10.1093/neuros/nyab157
    BACKGROUND: Although early coagulopathy increases mortality in adults with traumatic brain injury (TBI), less is known about pediatric TBI.

    OBJECTIVE: To describe the prothrombin time (PT), activated partial thromboplastin time (APTT), and platelet levels of children with moderate to severe TBI to identify predictors of early coagulopathy and study the association with clinical outcomes.

    METHODS: Using the Pediatric Acute and Critical Care Medicine Asian Network (PACCMAN) TBI retrospective cohort, we identified patients <16 yr old with a Glasgow Coma Scale (GCS) ≤13. We compared PT, APTT, platelets, and outcomes between children with isolated TBI and multiple trauma with TBI. We performed logistic regressions to identify predictors of early coagulopathy and study the association with mortality and poor functional outcomes.

    RESULTS: Among 370 children analyzed, 53/370 (14.3%) died and 127/370 (34.3%) had poor functional outcomes. PT was commonly deranged in both isolated TBI (53/173, 30.6%) and multiple trauma (101/197, 51.3%). Predictors for early coagulopathy were young age (adjusted odds ratio [aOR] 0.94, 95% CI 0.88-0.99, P = .023), GCS

  2. Yao S, Chong SL, Allen JC, Dang H, Ming M, Chan LCN, et al.
    Transl Pediatr, 2023 Mar 31;12(3):344-353.
    PMID: 37035406 DOI: 10.21037/tp-22-443
    BACKGROUND: To study the association in moderate and severe pediatric traumatic brain injury (TBI) between hyperglycemia, hyperlactatemia, acidosis and unfavorable outcome, as assessed by Pediatric Cerebral Performance Category (PCPC) on discharge from the pediatric intensive care unit (PICU).

    METHODS: Children <16 years old with TBI and Glasgow Coma Scale (GCS) ≤13 in an Asian multi-center PICU TBI cohort from January 2014 to October 2017 were included in this study. We defined unfavorable outcome as PCPC ≥3-moderate disability, severe disability, vegetative state, and death. We performed logistic regression to investigate the association between metabolic changes with unfavorable outcome. We divided hyperglycemia (glucose >11.1 mmol/L) during PICU admission into early-onset (within 24 h), late-onset (beyond 48 h) and persistent (throughout first 72 h).

    RESULTS: Among the 305 children analyzed, 136 (44.6%) had unfavorable outcome. Children with unfavorable outcome were more likely to have early hyperglycemia (75/136, 55.1% vs. 33/169, 19.5%; P<0.001), high lactate levels >2.0 mmol/L (74/136, 54.4% vs. 56/169, 32.5%; P<0.001) and initial acidosis (85/136, 62.5% vs. 78/169, 56.1%; P=0.003) compared to those with favorable outcome. After adjusting for gender, GCS ≤8 and presence of polytrauma, early hyperglycemia [adjusted odds ratio (aOR) =3.68, 95% CI: 2.12-6.39, P<0.001] and late hyperglycemia (aOR =13.30, 95% CI: 1.64-107.8, P=0.015] were independently associated with unfavorable outcome. All children with persistent hyperglycemia died.

    CONCLUSIONS: We described unfavorable outcome in pediatric TBI especially with persistent hyperglycemia. Future trials should investigate the causal relationship between glycemic trends, early intervention and outcome in this cohort.

  3. Chong SL, Qian S, Yao SHW, Allen JC, Dang H, Chan LCN, et al.
    J Neurosurg Pediatr, 2022 Feb 01;29(2):225-231.
    PMID: 34715667 DOI: 10.3171/2021.8.PEDS21281
    OBJECTIVE: Early posttraumatic seizures (EPTSs) in children after traumatic brain injury (TBI) increase metabolic stress on the injured brain. The authors sought to study the demographic and radiographic predictors for EPTS, and to investigate the association between EPTS and death, and between EPTS and poor functional outcomes among children with moderate to severe TBI in Asia.

    METHODS: A secondary analysis of a retrospective TBI cohort among participating centers of the Pediatric Acute & Critical Care Medicine Asian Network was performed. Children < 16 years of age with a Glasgow Coma Scale (GCS) score ≤ 13 who were admitted to pediatric intensive care units between January 2014 and October 2017 were included. Logistic regression analysis was performed to study risk factors for EPTS and to investigate the association between EPTS and death, and between EPTS and poor functional outcomes. Poor functional outcomes were defined as moderate disability, severe disability, and coma as defined by the Pediatric Cerebral Performance Category scale.

    RESULTS: Overall, 313 children were analyzed, with a median age of 4.3 years (IQR 1.8-8.9 years); 162 children (51.8%) had severe TBI (GCS score < 8), and 76 children (24.3%) had EPTS. After adjusting for age, sex, and the presence of nonaccidental trauma (NAT), only younger age was significantly associated with EPTS (adjusted odds ratio [aOR] 0.85, 95% CI 0.78-0.92; p < 0.001). Forty-nine children (15.6%) in the cohort died, and 87 (32.9%) of the 264 surviving patients had poor functional outcomes. EPTS did not increase the risk of death. After adjusting for age, sex, TBI due to NAT, multiple traumas, and a GCS score < 8, the presence of EPTS was associated with poor functional outcomes (aOR 2.08, 95% CI 1.05-4.10; p = 0.036).

    CONCLUSIONS: EPTSs were common among children with moderate to severe TBI in Asia and were associated with poor functional outcomes among children who survived TBI.

  4. Chong SL, Dang H, Ming M, Mahmood M, Zheng CQS, Gan CS, et al.
    Pediatr Crit Care Med, 2021 Apr 01;22(4):401-411.
    PMID: 33027240 DOI: 10.1097/PCC.0000000000002575
    OBJECTIVES: Traumatic brain injury remains an important cause of death and disability. We aim to report the epidemiology and management of moderate to severe traumatic brain injury in Asian PICUs and identify risk factors for mortality and poor functional outcomes.

    DESIGN: A retrospective study of the Pediatric Acute and Critical Care Medicine Asian Network moderate to severe traumatic brain injury dataset collected between 2014 and 2017.

    SETTING: Patients were from the participating PICUs of Pediatric Acute and Critical Care Medicine Asian Network.

    PATIENTS: We included children less than 16 years old with a Glasgow Coma Scale less than or equal to 13.

    INTERVENTIONS: None.

    MEASUREMENTS AND MAIN RESULTS: We obtained data on patient demographics, injury circumstances, and PICU management. We performed a multivariate logistic regression predicting for mortality and poor functional outcomes. We analyzed 380 children with moderate to severe traumatic brain injury. Most injuries were a result of road traffic injuries (174 [45.8%]) and falls (160 [42.1%]). There were important differences in temperature control, use of antiepileptic drugs, and hyperosmolar agents between the sites. Fifty-six children died (14.7%), and 104 of 324 survivors (32.1%) had poor functional outcomes. Poor functional outcomes were associated with non-high-income sites (adjusted odds ratio, 1.90; 95% CI, 1.11-3.29), Glasgow Coma Scale less than 8 (adjusted odds ratio, 4.24; 95% CI, 2.44-7.63), involvement in a road traffic collision (adjusted odds ratio, 1.83; 95% CI, 1.04-3.26), and presence of child abuse (adjusted odds ratio, 2.75; 95% CI, 1.01-7.46).

    CONCLUSIONS: Poor functional outcomes are prevalent after pediatric traumatic brain injury in Asia. There is an urgent need for further research in these high-risk groups.

  5. Wong JJ, Liu S, Dang H, Anantasit N, Phan PH, Phumeetham S, et al.
    Crit Care, 2020 01 31;24(1):31.
    PMID: 32005285 DOI: 10.1186/s13054-020-2741-x
    BACKGROUND: High-frequency oscillatory ventilation (HFOV) use was associated with greater mortality in adult acute respiratory distress syndrome (ARDS). Nevertheless, HFOV is still frequently used as rescue therapy in paediatric acute respiratory distress syndrome (PARDS). In view of the limited evidence for HFOV in PARDS and evidence demonstrating harm in adult patients with ARDS, we hypothesized that HFOV use compared to other modes of mechanical ventilation is associated with increased mortality in PARDS.

    METHODS: Patients with PARDS from 10 paediatric intensive care units across Asia from 2009 to 2015 were identified. Data on epidemiology and clinical outcomes were collected. Patients on HFOV were compared to patients on other modes of ventilation. The primary outcome was 28-day mortality and secondary outcomes were 28-day ventilator- (VFD) and intensive care unit- (IFD) free days. Genetic matching (GM) method was used to analyse the association between HFOV treatment with the primary outcome. Additionally, we performed a sensitivity analysis, including propensity score (PS) matching, inverse probability of treatment weighting (IPTW) and marginal structural modelling (MSM) to estimate the treatment effect.

    RESULTS: A total of 328 patients were included. In the first 7 days of PARDS, 122/328 (37.2%) patients were supported with HFOV. There were significant differences in baseline oxygenation index (OI) between the HFOV and non-HFOV groups (18.8 [12.0, 30.2] vs. 7.7 [5.1, 13.1] respectively; p 

  6. Wong JJM, Abbas Q, Chuah SL, Malisie RF, Pon KM, Katsuta T, et al.
    Am J Trop Med Hyg, 2021 Jun 15;105(2):413-420.
    PMID: 34129517 DOI: 10.4269/ajtmh.21-0299
    There is a scarcity of data regarding coronavirus disease 2019 (COVID-19) infection in children from southeast and south Asia. This study aims to identify risk factors for severe COVID-19 disease among children in the region. This is an observational study of children with COVID-19 infection in hospitals contributing data to the Pediatric Acute and Critical Care COVID-19 Registry of Asia. Laboratory-confirmed COVID-19 cases were included in this registry. The primary outcome was severity of COVID-19 infection as defined by the World Health Organization (WHO) (mild, moderate, severe, or critical). Epidemiology, clinical and laboratory features, and outcomes of children with COVID-19 are described. Univariate and multivariable logistic regression models were used to identify risk factors for severe/critical disease. A total of 260 COVID-19 cases from eight hospitals across seven countries (China, Japan, Singapore, Malaysia, Indonesia, India, and Pakistan) were included. The common clinical manifestations were similar across countries: fever (64%), cough (39%), and coryza (23%). Approximately 40% of children were asymptomatic, and overall mortality was 2.3%, with all deaths reported from India and Pakistan. Using the multivariable model, the infant age group, presence of comorbidities, and cough on presentation were associated with severe/critical COVID-19. This epidemiological study of pediatric COVID-19 infection demonstrated similar clinical presentations of COVID-19 in children across Asia. Risk factors for severe disease in children were age younger than 12 months, presence of comorbidities, and cough at presentation. Further studies are needed to determine whether differences in mortality are the result of genetic factors, cultural practices, or environmental exposures.
  7. Wong JJM, Abbas Q, Wang JQY, Xu W, Dang H, Phan PH, et al.
    Pediatr Crit Care Med, 2024 Nov 01;25(11):1035-1044.
    PMID: 39177431 DOI: 10.1097/PCC.0000000000003598
    OBJECTIVES: Mortality from pneumonia is three times higher in Asia compared with industrialized countries. We aimed to determine the epidemiology, microbiology, and outcome of severe pneumonia in PICUs across the Pediatric Acute and Critical Care Medicine Asian Network (PACCMAN).

    DESIGN: Prospective multicenter observational study from June 2020 to September 2022.

    SETTING: Fifteen PICUs in PACCMAN.

    PATIENTS: All children younger than 18 years old diagnosed with pneumonia and admitted to the PICU.

    INTERVENTIONS: None.

    MEASUREMENTS AND MAIN RESULTS: Clinical, microbiologic, and outcome data were recorded. The primary outcome was PICU mortality. Univariate and multivariable logistic regression was performed to investigate associations between PICU mortality and explanatory risk factors on presentation to the PICU. Among patients screened, 846 of 11,778 PICU patients (7.2%) with a median age of 1.2 years (interquartile range, 0.4-3.7 yr) had pneumonia. Respiratory syncytial virus was detected in 111 of 846 cases (13.1%). The most common bacteria were Staphylococcus species (71/846 [8.4%]) followed by Pseudomonas species (60/846 [7.1%]). Second-generation cephalosporins (322/846 [38.1%]) were the most common broad-spectrum antibiotics prescribed, followed by carbapenems (174/846 [20.6%]). Invasive mechanical ventilation and noninvasive respiratory support was provided in 438 of 846 (51.8%) and 500 of 846 (59.1%) patients, respectively. PICU mortality was 65 of 846 (7.7%). In the multivariable logistic regression model, age (adjusted odds ratio [aOR], 1.08; 95% CI, 1.00-1.16), Pediatric Index of Mortality 3 score (aOR, 1.03; 95% CI, 1.02-1.05), and drowsiness (aOR, 2.73; 95% CI, 1.24-6.00) were associated with greater odds of mortality.

    CONCLUSIONS: In the PACCMAN contributing PICUs, pneumonia is a frequent cause for admission (7%) and is associated with a greater odds of mortality.

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