RT Journal Article SR Electronic T1 Health effects associated with exposure to anaesthetic gases in Ontario hospital personnel. JF British Journal of Industrial Medicine JO Br J Ind Med FD BMJ Publishing Group Ltd SP 490 OP 497 DO 10.1136/oem.47.7.490 VO 47 IS 7 A1 S S Guirguis A1 P L Pelmear A1 M L Roy A1 L Wong YR 1990 UL http://oem.bmj.com/content/47/7/490.abstract AB In a retrospective study (by questionnaire) of 8032 personnel exposed to anaesthetic gases in operating and recovery rooms in Ontario hospitals, and 2525 non-exposed hospital staff, the response was 78.8% for the exposed and 87.2% for the unexposed personnel during the period 1981-5. Logistic regression analysis, with age and smoking standardised, showed that women in the exposed group had significantly increased frequencies of spontaneous abortion and their children had significantly more congenital abnormalities (p less than 0.05). No chronic disease was significantly associated with the exposed group. These findings, together with similar ones from other studies, suggest that it is prudent to minimise exposure to waste anaesthetic gases.