FIELD: medicine.
SUBSTANCE: cotton swab wetted in 4% indigo carmine is immersed into a formed mastoidal cavity. The swab is supposed to fill the entire cavity. After the 10-minute exposure, the swab is removed. The remained mucous membrane coloured in blue is removed completely under control of a surgical microscope. A mastoid repair is performed.
EFFECT: more effective surgical management of chronic othelcosis, prevention of remote complications and reduced incidence of recurrence by full sanitation of the mastoidal cavity by removing the indigo carmine-coloured mucous membrane.
2 ex
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