Carbon Monoxide Headquarters





Chronic CO Poisoning:

Lumio Chronic Carbon Monoxide Study (Cont.):


The Duration of Chronic CO Exposure of Symptomatic Patients in the Study.

Duration (Years) Number of Patients Percent
Under 1 4 1.5
1 - 2 23 8.7
2 - 3 13 4.9
3 - 4 16 6.1
5 - 6 83 31.6
6 - 7 91 34.6
Over 7 10 3.9
......... Total = 263 100.0


The Frequency of Acute CO Poisonings.

Frequency Number of Patients Percent
Never 106 40.3
Once 81 30.8
Twice 42 16.0
Three Times 10 3.8
More than 3 Times 24 9.1
......... Total = 263 100.0


Time when Patients Noted Hearing Impairment for that Subset of Patients who Complained of Hearing Loss.

Time Number of Patients Percent
Under 1/2 Year 30 25.0
1/2 - 1 Year 41 34.2
1 - 2 Year 32 26.7
Over 2 Years 17 14.1
......... Total = 120 100.0


From: Lumio, J.S. (1948) Hearing deficiencies caused by carbon monoxide (generator gas). Acta Otolaryngol., Suppl. 71, 1-112.



...... last changed 03/14/02


to Next Page

to Previous Page

Back to Page 1