Question

What is the concentration or Methacholine referred to that elicits a decreased of FEV1 of 20% called?

Answer 1

The concentration of Methacholine that elicits a decrease of 20% in FEV1 is called the PC20 value. It is used to assess airway hyperresponsiveness in individuals with asthma. It is commonly used in pulmonary function testing to assess airway hyperresponsiveness, which is a characteristic feature of asthma.

Step-by-step explanation:

The concentration of Methacholine that elicits a decrease of 20% in FEV1 is known as the PC20 value. PC20 stands for provocative concentration of Methacholine that causes a 20% drop in FEV1. It is commonly used in pulmonary function testing to assess airway hyperresponsiveness, which is a characteristic feature of asthma. The lower the PC20 value, the more sensitive the individual is to Methacholine and the more likely they are to have asthma.