Chronic bronchitis in an Egyptian ice factory.
El-Sewefy AZ; Awad S
J Egypt Med Assoc 1971 May; 54(5):304-310
Chronic bronchitis is found in 20% of employees of an ice manufacturing plant exposed to ammonia, frost, and dampness, and in 14% of workers in non-exposed areas. Lung mechanics, expressed by forced vital capacity and forced expiratory volume measurements, are slightly lower for the exposed workers than for the control group. Differences in incidence of chronic bronchitis and lung ventilation in he workers are not considered to be significant, smoking found to be significantly related to respiratory symptoms in the workers.
Ammonia; Environmental-effects; Respiratory-system-disorders; Toxic-gases; Air-contaminants; Cold-environments; Etiology; Symptomology; Epidemiology; Physical-properties; Pulmonary-functions
The Journal of the Egyptian Medical Association