Patients ages 5-17 presenting to the OU Children's Hospital Emergency Department from October 2023 to July 2024 will be assigned a respiratory score (RS) upon presentation. Those with a RS between 6-9 (moderate exacerbation) will be screened for inclusion. Eligible patient will then be approached for consent. First line asthma therapies including bronchodilators and steroids will not be delayed for the consent process. Patients who consent will be randomized to the control vs. experimental group once consent is obtained.
The study will not be blinded once a patient is randomized to a group, the provider will know whether the patient will receive weight-based IV magnesium within the first hour (experimental group) or receive standard weight-based IV magnesium sulfate per the provider's clinical judgement (placebo group). Magnesium sulfate dosing for the experimental group will be as follows:
15-19 kg: 750 mg
20-29 kg: 1000 mg
30-39 kg: 1500 mg
\>40 kg: 2000 mg
Enrolled patients will have their clinical course reviewed and data obtained regarding LOS in ED and hospital stay, need for respiratory support, and or PICU LOS if applicable.
