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NITROUS OXIDE LEVELS DURING RETINAL CRYOSURGERY.

Author(s) : MARCUS D. F., GAWECKI S.

Type of article: Article

Summary

THE NATIONAL INSTITUTE FOR OCCUPATIONAL SAFETY AND HEALTH (USA) SUGGEST STANDARDS FOR POSSIBLE TOXIC MATERIALS IN HOSPITALS. A DESIRABLE LEVEL WAS ESTABLISHED AT 25 PPM FOR NITROUS OXIDE IN OPERATING THEATRES. IN RETINAL CRYOSURGERY USING NITROUS OXIDE, LEVELS HAVE BEEN MONITORED. IN OPERATING THEATRES USING THE GAS FOR GENERAL ENDOTRACHEAL ANESTHESIA LEVELS RANGED FROM 75 TO 200 PPM. DURING CRYOTHERAPY WITHOUT SCAVENGING MEAN PEAK VALUES VARIED BETWEEN 594 PPM AND 963 PPM. WITH A SCAVENGING SYSTEM THE VALUES WERE REDUCED BY MORE THAN 50%. BY THE END OF THE PROCEDURE THE LEVEL FELL TO BELOW 50 PPM. THE USE OF SOME SYSTEM OF SCAVENGING TO REDUCE CONCENTRATION IN THE AIR IS PROBABLY DESIRABLE. C.R.F.

Details

  • Original title: NITROUS OXIDE LEVELS DURING RETINAL CRYOSURGERY.
  • Record ID : 1982-1069
  • Languages: English
  • Source: Arch. Ophthalmol. - vol. 99
  • Publication date: 1981
  • Document available for consultation in the library of the IIR headquarters only.

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