Necrotizing fasciitis other diagnostic studies

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Yamuna Kondapally, M.B.B.S[2]

Overview

Finger probe test is useful in the diagnosis of necrotizing fasciitis.[1]

Other Diagnostic Studies

Finger Probe Test

  • Finger probe test is useful in the diagnosis of necrotizing fasciitis.[1]

Procedure

  • This test is carried out in the ward, emergency room and in the theatre under local or general anesthesia.
  • After infiltrating the area, a 2cm incision is made down to the deep fascia.
  • Fascia will be swollen and grey on gross inspection.
  • Gentle probing with index finger is performed at the level of deep fascia and if the tissue dissects with the minimal resistance, then finger probe test is considered positive.
  • Signs suggesting necrotizing fasciitis include:
    • Lack of bleeding
    • Lack of normal tissue resistance on finger probe
    • Oozing of malodorous "dish water fluid"

References

  1. 1.0 1.1 Puvanendran R, Huey JC, Pasupathy S (2009). "Necrotizing fasciitis". Can Fam Physician. 55 (10): 981–7. PMC 2762295. PMID 19826154.

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