Bronchodilatation: response in FEV1 and VC
An increase in FEV1
after administering a bronchodilator drug is usually accompanied
by an
increase in the VC. The correlation is not very strong: the VC may
increase while the FEV1
diminishes, and vice versa. The data relate to about 4300 patients
in whom spirometry was
performed before and after bronchodilatation at Dijkzigt Ziekenhuis,
Rotterdam.