Incidence and Predictors of Bacterial infection in Febrile Children with Sickle Cell Disease.

Children with sickle cell disease are at increased risk of developing bacteremia and other serious bacterial infections. Fever is a common symptom in sickle cell disease and can also occur with sickle cell crises and viral infections. We aimed to evaluate the incidence and predictors of bacteremia and bacterial infection in children with sickle cell disease presenting with fever to a district hospital and sickle cell center in London. A retrospective analysis was performed on all attendances of children (aged under 16 years) with sickle cell disease presenting with a fever of 38.5 °C or higher over a 1-year period. Confirmed bacterial infection was defined as bacteremia, bacterial meningitis, urinary tract infection (UTI), pneumonia, osteomyelitis or other bacterial infection with positive identification of organism. Children were defined as having a suspected bacterial infection if a bacterial infection was suspected clinically, but no organism was identified. Over a 1-year period there were 88 episodes analyzed in 59 children. Bacteremia occurred in 3.4% of episodes and confirmed bacterial infection in 7.0%. Suspected bacterial infection occurred in 33.0%. One death occurred from Salmonella typhirium septicemia. C-reactive protein (CRP) level and white blood cell (WBC) count were both significantly associated with bacterial infection (p = 0.004 and 0.02, respectively.) In conclusion, bacterial infections continue to be a significant problem in children with sickle cell disease. C-reactive protein was significantly associated with bacterial infections, and could be included in clinical risk criteria for febrile children with sickle cell disease.

The Pediatric Intensive Care Unit as a Critical Care Setting for Adults during the COVID-19 Pandemic: A Service Evaluation.

One strategy to expand critical care capacity during the coronavirus disease 2019 (COVID-19) pandemic within the United Kingdom has been to repurpose other clinical departments, including the pediatric intensive care unit (PICU) and pediatric multidisciplinary team, to accommodate critically unwell adult patients. While multiple PICUs have treated adult patients with COVID-19, there is an absence of data on the characteristics of patients transferred to pediatric care and their resulting outcomes in comparison to standard adult intensive care unit (AICU) provision. Data were collected for all adult COVID-19 intensive care admissions between March and May 2020, in three ICUs within a single center: PICU, AICU, and theater recovery ICU (RICU). Patient characteristics, severity of illness, and outcomes were described according to the ICU where most of their bed-days occurred. Outcomes included duration of organ support and ICU admission, and mortality at 30 days. Mortality was compared between patients in PICU and the other adult ICUs, using a logistic regression model, adjusting for known confounding variables. Eighty-eight patients were included: 15 (17.0%) in PICU, 57 (64.7%) in AICU, and 16 (18.1%) in RICU. Patients' characteristics and illness severity on admission were comparable across locations, with similar organ support provided. Ten (66.7%) patients survived to hospital discharge from PICU, compared with 27 (47.4%) and nine (56.3%) patients from AICU and RICU, respectively, with no significant difference in 30-day mortality (OR 0.46, 95% CI 0.12-1.85; p = 0.276). Our analysis illustrates the feasibility of evaluating outcomes of patients who have been cared for in additional, emergency ICU beds, whilst demonstrating comparable outcomes for adults cared for in pediatric and adult units.

The Inflammatory and Hemostatic Response in Sepsis and Meningococcemia.

Meningococcemia is notorious for evasion of the host immune system and its rapid progression to fulminant disease, and serves as a unique model for pediatric sepsis. Illness severity is determined by complex interplays among host, pathogen, and environment. The inflammatory host response, including proinflammatory and anti-inflammatory responses in innate and adaptive immunity, skews toward a proinflammatory state. This leads to endothelial dysfunction and activation of the hemostatic response, which may lead to disseminated intravascular coagulation. This article reviews the pathogenesis of sepsis, in particular the inflammatory and hemostatic response in meningococcal sepsis.