Introduction non-invasive ventilation is widely used in the respiratory management of severe bronchiolitis. Methods a randomized controlled trial was carried out in a tertiary pediatric university hospital´s PICU over 3 years to compare between continuous positive airway pressure/nasal positive pressure ventilation (CPAP/NPPV) and high flow nasal cannula (HFNC) devices for severe bronchiolitis. The trial was recorded in the national library of medicine registry (NCT04650230). Patients aged from 7 days to 6 months, admitted for severe bronchiolitis were enrolled. Eligible patients were randomly chosen to receive either HFNC or CPAP/NPPV. If HFNC failed, the switch to CPAP/NPPV was allowed. Mechanical ventilation was the last resort in case of CPAP/NPPV device failure. The primary outcome was the success of the treatment defined by no need of care escalation. The secondary outcomes were failure predictors, intubation rate, stay length, serious adverse events, and mortality. Results a total of 268 patients were enrolled. The data of 255 participants were analyzed. The mean age was 51.13 ± 34.43 days. Participants were randomized into two groups; HFNC group (n=130) and CPAP/NPPV group (n=125). The success of the treatment was significantly higher in the CPAP/NPPV group (70.4% [61.6%- 78.2%) comparing to HFNC group (50.7% [41.9%- 59.6%])- (p=0.001). For secondary outcomes, lower baseline pH was the only significant failure predictor in the CPAP/NPPV group (p=0.035). There were no differences in intubation rate or serious adverse events between the groups. Conclusion high flow nasal cannula was safe and efficient, but CPAP/ NPPV was better in preventing treatment failure. The switch to CPAP/NPPV if HFNC failed, avoided intubation in 54% of the cases.

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Background: Multisystem inflammatory syndrome in children (MIS-C) is a new serious emerging disease that is temporally related to previous exposure to coronavirus infection disease (COVID-19).  Aim:  To describe the clinical features, laboratory findings, therapies and outcomes for the first Tunisian cluster admissions of critically ill children with severe MIS-C. Methods: Retrospective study conducted between 01 November and 30 November 2020 We included 8 children aged less than 15 years who were admitted to our pediatric intensive care and met the criteria for MIS-C according to the WHO definition case. We reviewed the medical records of all patients to collect demographic and clinical data, severity scores, laboratory test results, echocardiographic findings, treatment, and outcomes. Results: All children were previously fit and well. Seven patients were boys. Known exposure to COVID-19 was reported in 4 cases. Fever and gastrointestinal symptoms were reported in all cases. Five patients had marked abdominal pain and were examined by the surgeon for a possible appendicitis. Seven patients had diarrhea. On examination, we found a rash (n=7), a conjunctivitis (n=7), a cheilitis (n=5) and a meningism (n=3). We reported cardiac dysfunction in 7 cases and a shock with hypotension in 3 cases. All patients received immunoglobulins, methyl prednisolone and a low dose of aspirine. No deaths occurred. Conclusion: We reported here the first Tunisian cluster admissions of 8 critically ill children with MIS-C to highlight the increase of a new severe emerging disease with an evidence of prior COVID-19 infection in older children.

We report herein a case series of infants, with no comorbidities, who developed a life‐threatening illness due to the SARS‐CoV‐2 Delta variant. We retrospectively reviewed the medical records of children, aged under 15 years, admitted to PICU, during the peak of Delta infection, between June 23 and August 16 2021, with severe and critical forms of SARS‐CoV‐2 infection, confirmed by RT‐PCR. Twenty infants were included, the median age was 47 days (IQR: 26.5–77) and sex ratio was 0.8. No underlying medical conditions were noted. Parents were not vaccinated. Respiratory involvement was the main feature observed. Eleven patients had paediatric acute respiratory distress (PARDS) with a median oxygen saturation index (OSI) of 9 (IQR: 7–11). PARDS was mild in four, moderate in five, and severe in two cases. Hemodynamic instability was observed in 4 cases. The main radiological finding was ground glass opacities in 11 cases. Seventeen patients were mechanically ventilated, and three of them were escalated to high‐frequency oscillatory ventilation. The median duration of mechanical ventilation was 6 days (IQR 2.5–12.5). The remaining patients were managed with high‐flow nasal cannula. Four patients died.

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BACKGROUND AND AIM: Multisystem inflammatory syndrome in children (MIS-C) is a new serious emerging disease related to previous exposure to coronavirus infection disease . AIM:To describe the clinical features, laboratory findings, therapies, and outcomes of children with MIS-C in a Tunisian PICU. METHOD:Prospective study conducted between 01 November and 30 December 2021. Patients aged less than 15 years, admitted to our PICU, and met the criteria for MIS-C according to the WHO definition case, were included. Demographic and clinical data, laboratory test results, echocardiographic findings, treatment, and outcomes were collected during hospitalization. RESULTS:The median age was 9 years (IQR: 5-10). Obesity was noted in 1 patient. Ten patients were boys. Median delay between symptom and PICU admission was 6days (IQR:5-7). Fever and gastrointestinal symptoms were reported in all cases. Five patients had marked abdominal pain and were examined by the surgeon for a possible appendicitis. Cardiac dysfunction was reported in 13 cases with a median LVEF 42% (IQR: 33-50). Two patients had a vasoplegic shock and needed norepinephrine. Median CRP was 281mg/l (166-347). Median lymphocyte count was 880cells /mm3(520-1270). Median D-Dimers was 4631 ng/ ml (1582-8672). Median troponin was 339ng/L (IQR: 36 879). Median pro BNP was 9199pg/ml (2825-25000). All patients had positive SARS-COV-2 serology. Only 4 patients required mechanical ventilation. All patients received inotropes, immunoglobulins, methyl prednisolone and a low dose of aspirin. One patient died. CONCLUSIONS:We report herein clinical features, management, and outcomes of critically ill children with MIS-C to highlight the severity of clinical presentation with a good prognosis.

CONCLUSIONS:The incidence rate of HAB was 3.7 per 1000 patient-days in our unit. The majority of them resulted from gram negative bacilli.