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The Egyptian Journal of Otolaryngology

Table 4 Frequency wise average pre-op and post-operative ACT in dB (n=42)

From: Correlation of intraoperative middle ear status and hearing results in single-stage canal wall down tympanomastoidectomy with PORP—a prospective study

Frequency (Hz)

Pre-operative (dB)

Post-operative (dB)

500

45

39.2

1000

41.5

36.30

2000

33.1

35.35

3000

37.7

36.54

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