A functional defect characterized by reduced total lung capacity (TLC) not associated with abnormalities of expiratory airflow or airway resistance. Spirometrically, a restrictive defect is defined as FEV1 (forced expiratory volume in 1 second) and FVC (forced vital capacity) less than 80 per cent. Restrictive lung disease may be caused by alterations in lung parenchyma or because of a disease of the pleura, chest wall, or neuromuscular apparatus.
Tracheal tug on inspiration
Weakness of muscles of respiration +
Synonyms
Exact Synonyms:
Restrictive deficit on pulmonary function testing
;
Restrictive deficit on pulmonary function tests
;
Restrictive respiratory disease
;
Restrictive respiratory insufficiency
;
Restrictive respiratory syndrome
;
Spirometric restriction
;
Stiff lung or chest wall causing decreased lung volume