Functional disturbances were the following :
1) for nervous system :
asthenic symptoms, vegetative disorders, changes in sensitivity of extremities
2) for cardiovascular system :
hyper- or hypotension, tachy- or bradicardia, ECG changes etc.
General number of workers with chronic occupatonal intoxication from MMA was 109 persons.
The frequencies of some disorders among about 400 workers were:
- hypertension in 31%.
- hypotension in 10%
- changes in cardial tones in 42%
- various changes in ECG (including tachycardia, bradicardia) - in up to 85% workers.
The changes rates increased with service length (being standardized according to age).