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Original ArticleOpen Access
Suspended Particulate Matter in an Office and Laser Smoke Particles in an Operating Room
Tanpowpong K 
,
Koytong W
,
Koytong W Suspended particulate matter in an office and laser smoke particles in a laser operative
room of the Otolaryngology Department, Ramathibodi Hospital were compared. Suspended parti-
culate matter sizes of PM15, PMlO and PM2.5 were selected due to their impact on health. The
amount and sizes of the particles were measured by a laser diode portable dust monitor. The mean
and standard deviation were measured every hour for 6 periods and calculated by specific computer
software. The amount of suspended particulate matters in the office were within the accepted safety
level. The amount of suspended particulate matter including laser smoke particles in the operative
room before, during and after each laser evaporative procedure was much higher than that of the
office. The amount of suspended particulate matter was dangerous for all personnel in the opera-
tive room. Risk management for patients in the operative room should be stressed. The ventilation
system of the operative room will be assessed further.
Key word: Suspended Particulate Matter, Laser Smoke Particle, Operative Room, Office Room,
Laser Diode Portable Dust Monitor
room of the Otolaryngology Department, Ramathibodi Hospital were compared. Suspended parti-
culate matter sizes of PM15, PMlO and PM2.5 were selected due to their impact on health. The
amount and sizes of the particles were measured by a laser diode portable dust monitor. The mean
and standard deviation were measured every hour for 6 periods and calculated by specific computer
software. The amount of suspended particulate matters in the office were within the accepted safety
level. The amount of suspended particulate matter including laser smoke particles in the operative
room before, during and after each laser evaporative procedure was much higher than that of the
office. The amount of suspended particulate matter was dangerous for all personnel in the opera-
tive room. Risk management for patients in the operative room should be stressed. The ventilation
system of the operative room will be assessed further.
Key word: Suspended Particulate Matter, Laser Smoke Particle, Operative Room, Office Room,
Laser Diode Portable Dust Monitor
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