Golden Box Book Publishing Asthma Relief with Grandmas Remedies | Page 23

to LABA. Mast cell stabilizers (such as cromolyn sodium) are another non-preferred alternative to glucocorticoids. Delivery methods Medications are typically provided as metered-dose inhalers (MDIs) in combination with an asthma spacer or as a dry powder inhaler. The spacer is a plastic cylinder that mixes the medication with air, making it easier to receive a full dose of the drug. A nebulizer may also be used. Nebulizers and spacers are equally effective in those with mild to moderate symptoms. Adverse effects Long-term use of inhaled glucocorticoids at conventional doses carries a minor risk for adverse effects. Risks include the development of cataracts. When asthma is unresponsive to usual medications, other options are available for both emergency management and prevention of flare- ups. For emergency management, other options include: Oxygen, used to alleviate hypoxia if saturations fall below 92%. Magnesium sulfate intravenous treatment has been shown to provide a bronchodilation effect when used in addition to other treatment in severe acute asthma attacks. Heliox, a mixture of helium and oxygen, may also be considered in severe unresponsive cases. Intravenous salbutamol is not supported by available evidence and is thus used only in extreme cases. Methylxanthines (such as theophylline) were once widely used, but do not add significantly to the effects of inhaled beta-agonists. The dissociative anesthetic ketamine is theoretically useful if intubation and mechanical ventilation is needed in people who are approaching respiratory arrest; however, there is no evidence from clinical trials to support this. For those with severe persistent asthma not controlled by inhaled corticosteroids and LABAs, bronchial thermoplasty can lead to improvement. It involves the delivery of controlled thermal energy to the airway wall during a series of bronchoscopies, and results in a prolonged reduction in airway smooth muscle mass. 24