Decline in FEV1 among patients with severe hereditary alpha 1-antitrypsin deficiency type PiZ.


Severe alpha 1-antitrypsin (alpha 1-AT) deficiency is characterized by a decrease in serum alpha 1-AT to values < 20% of normal. Severe airflow obstruction, most commonly due to pulmonary emphysema secondary to the destruction of pulmonary elastic tissue, may develop at an early age in persons with alpha 1-AT deficiency. The purpose of this study was to… (More)