在喉腔切除患者中,热水交换器产生的呼吸压力
Toshihiko Yamashita1, Hirotaka Shinomiya1, Ken-Ichi Nibu1
1Department of Otolaryngology-Head and Neck Surgery, Kobe University Hospital, Kobe 650-0017, Japan.
喉切除术患者使用的热水交换器 (HME) 会产生低于10mmH2O的呼气压力. 精细的过器比粗的过器产生更高的压力,但HME可能无法取代口唇呼吸.
科学领域:
- 呼吸系统生理学 呼吸系统生理学
- 医疗设备工程 医疗设备工程
背景情况:
- 喉切除术的患者会失去上呼吸道的自然功能.
- 热和湿度交换器 (HME) 在术后使用,以弥补这些丧失的功能.
- 人们对HME诱导的气道阻力的临床意义进行了辩论,对测量压力的数据有限.
研究的目的:
- 在呼吸过程中测量特定HME (XtraFlow,XtraMoist,LifeGo,LifeHome) 所产生的气压.
- 将测量的HME压力与理论值进行比较.
- 为了评估HME压力与嘴呼吸 (PLB) 相比.
主要方法:
- 参与了9名经过喉切除的男性患者 (平均年龄为72.3岁).
- 一个U形水力计系统被开发用于压力测量.
- 在休息时和轻度运动时 (跑步机,3次MET) 记录了被选中的HME的呼吸压力.
主要成果:
- 峰值呼气压在3.24~8.11mmH2O (平均5.67) 之间,时间平均压力在1.56~4.45mmH2O (平均3.00) 之间.
- 测量的压力与理论预期保持一致.
- 细过器HME (XtraMoist,LifeHome) 的压力比粗过器HME (XtraFlow,LifeGo) 的压力更高.
结论:
- 过期期间Atos HME的内肌压力通常低于10 mmH2O.
- HME的呼气压力受过器细度的影响,更细的过器产生更高的压力.
- HME压力下降的数量似乎低于嘴唇排气的数量,这表明它们可能不是直接的替代品.
更多相关视频
09:31Normothermic Negative Pressure Ventilation Ex Situ Lung Perfusion: Evaluation of Lung Function and Metabolism
Published on: February 14, 2022
06:22Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome ARDS
Published on: April 7, 2021
相关概念视频
Pressure Relationships in Thoracic Cavity
Breathing Mechanisms
Both intra-alveolar and intrapleural pressures rely on specific lung properties. The ability to breathe—allowing air to enter the lungs...
Pulmonary Cycle: Exhalation
Pulmonary Ventilation: Inhalation
Boyle's law becomes particularly pertinent when examining respiratory...
Mechanical Ventilation II: Invasive Ventilation
Negative-Pressure Ventilators
Negative-pressure ventilators create a vacuum around the chest or body to draw air into the lungs, simulating breathing. This method does not require an...
Factors Affecting Pulmonary Ventilation
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
Physical Assessment of the Respiratory Tract IV: Auscultation
Breath Sounds
Breath sounds are categorized into vesicular, bronchovesicular, and bronchial.
