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History of #Mask
An OT in Jefferson Medical College Philadelphia in 1902 with spectators (Pic)
No #mask was used. A student spectator observed droplets of saliva comin from surgeon’s mouth while he spoke to class & conducted his operation-shared it with Dr #AliceHamilton 1/4
An OT in Jefferson Medical College Philadelphia in 1902 with spectators (Pic)
No #mask was used. A student spectator observed droplets of saliva comin from surgeon’s mouth while he spoke to class & conducted his operation-shared it with Dr #AliceHamilton 1/4
Dr Alice Hamilton, teacher there conducted research on it-She kept a culture plate on table while surgeon operated & spoke upto 500 words an average of 75 bacterial colonies were identified which contd Streptococci, Diplococci & other bacteria- half of them were harmful (2/4)
She also observed:
-Speaking released droplets up to 24 cms
-With coughing it was 36 cms
-Whispering produced more droplets than talking
She concluded that this spray of saliva thru surgeon’s mouth can cause harmful wound infection to the patient getting operated (3/4)
-Speaking released droplets up to 24 cms
-With coughing it was 36 cms
-Whispering produced more droplets than talking
She concluded that this spray of saliva thru surgeon’s mouth can cause harmful wound infection to the patient getting operated (3/4)
