What is the recommended dose of IV magnesium for a child with asthma resistant to albuterol?

The recommended dose of IV magnesium for a child with asthma that is resistant to albuterol is 50 mg/kg. This magnesium sulfate administration helps in relaxing the bronchial smooth muscles, thereby aiding in the relief of acute bronchospasm associated with severe asthma exacerbations.

Intravenous magnesium is particularly beneficial in cases where traditional treatments, such as beta-agonists like albuterol, are ineffective. The use of 50 mg/kg is based on clinical studies showing efficacy and safety at this dosage in pediatric populations. Higher doses may not provide additional benefits and could increase the risk of potential side effects, while lower doses might not be as effective in managing severe cases of respiratory distress.

This specific dosing schedule takes into account the typical severity of asthma exacerbations and the pharmacological response seen in patients. Hence, using the established 50 mg/kg guideline is crucial for effective patient management in emergency situations.