Clinical Study
Treatment of Hemorrhagic Vocal Polyps by Pulsed Dye Laser-Assisted Laryngomicrosurgery
Table 1
Voice quality improvement after the operation.
| | | Preoperative | Postoperative | value |
| | Aerodynamic measures, mean (SD) | | MPT (sec) | 12.43 (5.73) | 14.35 (5.50) | 0.084 | | MFR (L/sec) | 0.16 (0.13) | 0.11 (0.09) | 0.005* | | Psub (cmH20) | 6.80 (2.08) | 6.23 (2.28) | 0.287 |
| | EGG analysis, mean (SD) | | CQ (%) | 42.42 (5.45) | 42.91 (8.06) | 0.728 | | CFx (%) | 12.50 (10.89) | 9.54 (6.83) | 0.197 | | CAx (%) | 6.86 (3.41) | 6.35 (4.60) | 0.515 |
| | Acoustic analysis, mean (SD) | | 0 (Hz) | 158.62 (38.14) | 157.21 (41.61) | 0.630 | | NHR | 0.15 (0.03) | 0.14 (0.02) | 0.121 | | Jitter (%) | 2.33 (1.58) | 1.50 (0.87) | 0.006* | | Shimmer (%) | 4.55 (2.92) | 3.70 (1.61) | 0.134 |
| | Patient-perceived satisfaction, mean (SD) | | VHI score | 40.82 (28.62) | 13.96 (13.50) | <0.001* |
| | Auditory perceptual judgment, mean (SD) | | G | 1.32 (0.54) | 0.63 (0.46) | <0.001* | | R | 0.57 (0.40) | 0.26 (0.38) | <0.001* | | B | 0.86 (0.48) | 0.37 (0.32) | <0.001* | | A | 0.03 (0.19) | 0 (0) | 0.326 | | S | 0.32 (0.36) | 0.18 (0.24) | 0.004* |
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IQR: interquartile range; MPT: maximum phonation time; MFR: mean airflow rate; Psub: subglottic pressure; CQ: closed quotient; CFx: irregularity of frequency; CAx: irregularity of amplitude; 0: average fundamental frequency; NHR: noise-to-harmonic ratio; VHI: voice handicap index; G: grade; R: roughness; B: breathiness; A: asthenia; S: strain.
* refers to the values that are statistically significant ( value < 0.05).
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