End-of-life decision making in critical illness: Perspectives of Asian parents.

OBJECTIVE: To explore parents' perspectives regarding end-of-life (EOL) decisions, factors and possible barriers that influence the EOL decision making process, and to understand parental preferences for communication about EOL care in an Asian population. METHOD: A prospective questionnaire cohort study conducted in a university-based tertiary care hospital. 30 parents of children who had been admitted to general pediatric wards for acute ailments and/or were being followed up in general pediatric outpatient clinics after inpatient admissions or emergency department visits completed 30 interviewer-administered questionnaires. With the first 10 completed questionnaires, we sought feedback on the design of the four case vignettes and related questions. Responses to specific questions related to each case vignette were rated on a Likert scale. RESULTS: The majority of parents were able to comprehend and identify with the issues in the case vignettes, which allowed them to respond appropriately. Parents tended to avoid active withdrawal or withholding of life-sustaining treatment. The top three priorities for parents making EOL decisions for their children were: the chance of improvement, the presence of pain or discomfort, and information provided by healthcare staff. Parents reported that they would prefer to know immediately if their child is at risk of dying; they also preferred to get as much information as possible from the healthcare team and thought that meeting with the healthcare team before making EOL decisions was pivotal. SIGNIFICANCE OF RESULTS: Parents place highest priorities on their child's likelihood of improvement, perception of their child's pain, and information provided by healthcare professionals in making EOL decisions.

Immunogenicity of Protein Therapeutics: A Lymph Node Perspective.

The continuous development of molecular biology and protein engineering technologies enables the expansion of the breadth and complexity of protein therapeutics for in vivo administration. However, the immunogenicity and associated in vivo development of antibodies against therapeutics are a major restriction factor for their usage. The B cell follicular and particularly germinal center areas in secondary lymphoid organs are the anatomical sites where the development of antibody responses against pathogens and immunogens takes place. A growing body of data has revealed the importance of the orchestrated function of highly differentiated adaptive immunity cells, including follicular helper CD4 T cells and germinal center B cells, for the optimal generation of these antibody responses. Understanding the cellular and molecular mechanisms mediating the antibody responses against therapeutics could lead to novel strategies to reduce their immunogenicity and increase their efficacy.

A unique case of acute brain haemorrhage with left ventricular systolic failure requiring ECMO.

BACKGROUND: Acute left ventricular (LV) systolic failure as a consequence of acute severe brain injury with status epilepticus in a young infant is not common; managing such a patient on extracorporeal membrane oxygenation (ECMO), which requires proper anticoagulation adds further substrate to a particularly intriguing and novel case worthy of reporting. Takotsubo syndrome and its peculiar clinical presentation is not commonly reported in the paediatric population, yet the high likelihood of this diagnosis joining the dots up for this case invites our curiosity and reflection through the clinical management of this case. CASE PRESENTATION: A previously healthy 9-month-old local Chinese boy presented with generalised seizures secondary to acute severe brain injury, with signs of sympathetic overdrive, followed by rapidly progressive cardiogenic shock and respiratory failure, eventually requiring ECMO support. Neuroimaging at presentation revealed bilateral subdural haemorrhages. His cardiac function recovered within the next 24 h revealing the reversibility nature of Takotsubo cardiomyopathy. CONCLUSIONS: This is a captivating case depicting a series of unfortunate and unpredictable clinical events occurring in a previously well infant, which at initial presentation challenged the managing team with regards to its exact aetiology of acute brain injury and acute cardiorespiratory failure. Consideration of various differential diagnoses and finally narrowing down to that of stress-induced reversible cardiomyopathy (Takotsubo syndrome) following his intracranial bleed, versus that of coexisting dual pathology - acute brain injury with concomitant acute viral myocarditis, deepened our understanding of the pathophysiology of each disease process, and how it possibly interlinks between different organ systems.