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  • Title: Outcome of status asthmaticus at a pediatric intensive care unit in Hong Kong.
    Author: Cheng WT, Hon KL, Chan RWY, Chan LCN, Wong W, Cheung HM, Qian SY.
    Journal: Clin Respir J; 2020 May; 14(5):462-470. PubMed ID: 31965725.
    Abstract:
    OBJECTIVES: To characterize the clinical course and outcome of children with status asthmaticus (SA) admitted to a pediatric intensive care unit (PICU) METHODS: All patients with SA who were admitted to a PICU from January 2003 to December 2018 were reviewed. Polymerase chain reaction (PCR) studies on nasopharyngeal aspirate for respiratory pathogens were performed from 2014 to 2018. RESULTS: Sixty-seven SA admissions constituted 2.4% of total PICU admissions (n = 2788). Fifteen (22.4%) children required noninvasive ventilation (NIV), while 7 children (10%) required invasive mechanical ventilation. Nonadherence to prior asthma therapy was common. PCR was positive for enterorvirus/rhinovirus in 84% (16 out of 19) and for any virus in 95% of nasopharyngeal aspirate (NPA) samples of patients between 2014 and 2018. Over the 16-year period, increased utilization of ipratropium bromide, magnesium sulfate and NIV was noted (P < .05). Patients who required invasive mechanical ventilation had significantly higher heart rate, lower pH and longer PICU length of stay (LOS) when compared to nonintubated children (P < .05). There was no mortality, gender difference, or seasonal characteristics in these SA admissions. Median LOS in PICU was 2 days (interquartile range 1-3 days). CONCLUSIONS: SA accounts for a small proportion of PICU admissions. LOS was short and prognosis generally good. Nonadherence to prior asthma therapy was common. The most common trigger is enterovirus/rhinovirus for children with severe asthma requiring PICU admission. A trend of increase in usage of ipratropium, magnesium sulfate and NIV was observed. Primary prevention and early treatment of exacerbation are the most important step in managing children with asthma. Regular follow-up to ensure compliance together with annual vaccination could possibly avoid PICU admissions.
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