Department of ENT, Aksaray University, Aksaray Education and Research Hospital, Aksaray, Turkey.
Department of ENT, Health Sciences University Erzurum Regional Training and Research Hospital, Erzurum, Turkey.
J Voice. 2023 Sep;37(5):800.e1-800.e5. doi: 10.1016/j.jvoice.2021.02.026. Epub 2021 Mar 10.
Following endotracheal intubation (ETI), voice changes can be observed quite frequently. Considering that the pressure that occurs increases as the duration of anesthesia with ETI increases, with the aim to contribute to literature, we realized objective acoustic analysis by grouping patients according to the length of surgical periods. We wanted to investigate both the impact of endotracheal intubation on the voice and how long this impact lasted by performing voice analyzes on the preoperative, postoperative first day and postoperative fifth day.
Patients were examined in three groups comprised of operations lasting less than 60 minutes depending on the operation time (1st group, n = 21), operations lasting between 60-120 minutes (2nd group, n = 21) and operations lasting longer than 120 minutes (3rd group, n = 18). For patients in all three groups, preoperative, postoperative first day and postoperative fifth day voice analyzes have been performed and compared statistically.
With the evaluation made on the postoperative first day, it was found that the jitter%, shimmer% and shimmer dB values increased significantly as the operation time increased and it was observed that the HNR values decreased significantly (for jitter% P = 0,008, for shimmer% P = 0,027, for shimmer dB P = 0,025, for HNR P = 0,028). There was no significant difference between the postoperative first day F0 values and postoperative fifth day F0, jitter%, shimmer%, shimmer dB and HNR values in all three groups.
It is possible to state that ETI makes changes in the voice in the early period, but the changes are normalized in the long term. However, multidisciplinary studies with larger patient groups are needed for more precise and clear judgments.
气管插管（ETI）后，常可观察到声音变化。考虑到随着 ETI 麻醉时间的延长，发生的压力会增加，为了丰富文献，我们根据手术时间的长短将患者分组，进行客观声学分析。我们希望通过对术前、术后第 1 天和术后第 5 天进行嗓音分析，来研究 ETI 对嗓音的影响及其持续时间。
根据手术时间，患者被分为三组：手术时间小于 60 分钟（第 1 组，n=21）、手术时间在 60-120 分钟之间（第 2 组，n=21）和手术时间超过 120 分钟（第 3 组，n=18）。对三组患者均进行术前、术后第 1 天和术后第 5 天的嗓音分析，并进行统计学比较。
术后第 1 天的评估发现，随着手术时间的增加，抖动%、晃动%和晃动 dB 值显著增加，而 HNR 值显著降低（抖动%：P=0.008；晃动%：P=0.027；晃动 dB：P=0.025；HNR：P=0.028）。三组患者术后第 1 天和第 5 天的 F0 值、抖动%、晃动%、晃动 dB 和 HNR 值之间无显著差异。
可以认为 ETI 会使声音在早期发生变化，但长期来看，这些变化会恢复正常。然而，需要进行更多的多学科研究，以包含更大的患者群体，从而得出更精确和明确的结论。
