Waste Anesthesia Monitoring
Patients treated with anaesthetics are only briefly exposed, but those who work regularly with or near anaesthetics such as surgeons, anesthesiologists, nurse anesthetists, operating room nurses and technicians, may be at risk.
Exposure comes from unused fresh gases released from the anaesthetic delivery system and from waste gases exhaled by patients.
The Monitoring Need of Measurement of Anaesthetic Agents in Operating Rooms
An important aspect is the efficiency of the ventilation system and its capability to remove the anaesthetic agents in the operating room. The agent levels should be checked continuously.
Legislation and enforcement in this field varies greatly from country to country. For example, in Italy, the law requires extensive monitoring of anesthetic gases in operating rooms and frequent measurements on the ventilation system.
The anesthetic gases that usually are monitored are Nitrous Oxide, Isoflurane, Enflurane, Sevoflurane and Desflurane. Carbon Dioxide (CO2) and Isopropanol are also monitored in order to cross-compensate for interferences. CO2 is also used as an indicator of the air quality and the ventilation efficiency in the operating room.
In addition to the continuous monitoring of the operating room, the adjacent pre-anesthesia room and wake-up room are also monitored.
The Photoacoustic Gas Monitor – INNOVA 1412i is well suited for this type of measurement. The monitor is easily operated and can measure up to five gases at a time, which would include anesthetic agents of interest and CO2.
The measurement results are automatically compensated for water vapor, which is measured with a separate filter. The advantage of the Photoacoustic Gas Monitor – INNOVA 1412i is its high stability and repeatability with infrequent calibration (typically once a year), linear response, low detection limits, and no consumables.
The detection limits for the Photoacoustic Gas Monitor – INNOVA 1412i for the gases of interest are:
- 0.03 ppm for Nitrous Oxide
- 0.006 ppm for Sevoflurane
- 0.008 ppm for Desflurane
- 1.5 ppm for CO2
- 0.005 ppm for Isoflurane
- 0.005 ppm for Enflurane
The INNOVA 1412i multi-gas field monitor features great portability and will be a convenient instrument for temporary monitoring campaigns or periodic OSHA testing.
- Field proven solution to comply with stringent safety and health regulations in healthcare
- Excellent flexibility with regard to the type of anesthesia gases
- Direct measurement and online monitoring of working conditions
- Easily moved from room to room for temporary controls
- High reliability and stability for a very low cost of ownership