What is Metaproteranol primarily indicated for?

Metaproteranol is primarily indicated for bronchodilation, specifically in patients suffering from respiratory conditions such as asthma or chronic obstructive pulmonary disease (COPD). This medication works as a bronchodilator by stimulating beta-2 adrenergic receptors in the smooth muscles of the airways, leading to relaxation and opening of the air passages.

The focus on bronchodilation is essential because maintaining clear airways is a primary therapeutic goal in managing respiratory conditions. While the other options mention various treatments, they do not align with the specific role of Metaproteranol in respiratory therapy. For instance, it does not function primarily as an anti-inflammatory agent, nor is it indicated for treating pneumonia or aiding in cardiac arrest recovery. Its efficacy is specifically tied to improving airflow in the lungs, making it a vital tool in the management of bronchospasm.