How does Proair HFA treat muscle paralysis?

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Usually, Proair (albuterol) HFA is used to relax the muscles in the airways to increase air flow to the lungs. In rare cases, inhaled albuterol has been used to treat muscle paralysis in people with attacks of paralysis due to high blood levels of potassium. It is thought that, since albuterol (intravenous or inhaled) causes potassium to move from the blood into the cells, it may relieve the paralysis attacks by lowering the potassium level in the blood.