Southwest Medical University, Luzhou 646000, Sichuan, China.
Department of Rehabilitation, West China Hospital, Sichuan University, Chengdu 610000, Sichuan, China.
Can Respir J. 2021 Dec 15;2021:5888783. doi: 10.1155/2021/5888783. eCollection 2021.
Postoperative ineffective cough is easy to occur after thoracic surgery, and it is also a risk factor for postoperative pulmonary complications (PPCs).
To explore the value of peak expiratory flow rate (PEF) in evaluating cough ability in patients undergoing lung surgery and evaluate the effectiveness of chest wall compression during the expiratory phase by PEF.
From September 2020 to May 2021, the researchers collected the data of patients who underwent lung surgery. Eventually, 153 patients who met the criteria were included, 102 cases were included in the effective cough group and 51 cases were included in the ineffective cough group. The receiver working curve (ROC curve) was used to analyze whether PEF could evaluate cough ability. At the same time, the researchers collected the pulmonary function data of the first 30 patients of the ineffective cough group while compressing the chest wall during the expiratory phase to evaluate the effectiveness of chest wall compression.
The area under the curve (AUC) of postoperative PEF to evaluate the postoperative cough ability was 0.955 (95% CI: 0.927-0.983, < 0.001). The values of PEF (127.17 ± 34.72 L/min vs. 100.70 ± 29.98 L/min, < 0.001, 95% CI: 18.34-34.59) and FEV (0.72 (0.68-0.97) L vs. 0.64 (0.56-0.82) L, < 0.001) measured while compressing the chest wall were higher than those without compression.
PEF can be used as a quantitative indicator of cough ability. Chest wall compression could improve cough ability for patients who have ineffective cough.
胸外科术后易发生无效咳嗽，是术后肺部并发症（PPCs）的危险因素之一。
探讨呼气峰流速（PEF）在评估肺手术患者咳嗽能力中的价值，并通过 PEF 评估呼气时胸壁压迫的效果。
研究人员于 2020 年 9 月至 2021 年 5 月间收集了行肺手术患者的数据，最终纳入符合标准的 153 例患者，其中有效咳嗽组 102 例，无效咳嗽组 51 例。采用受试者工作特征曲线（ROC 曲线）分析 PEF 是否能评估咳嗽能力。同时，研究人员收集了无效咳嗽组前 30 例患者呼气时胸壁压迫的肺功能数据，以评估胸壁压迫的效果。
术后 PEF 评估术后咳嗽能力的曲线下面积（AUC）为 0.955（95%CI：0.927-0.983， < 0.001）。PEF（127.17±34.72 L/min 比 100.70±29.98 L/min， < 0.001，95%CI：18.34-34.59）和 FEV（0.72（0.68-0.97）L 比 0.64（0.56-0.82）L， < 0.001）在胸壁受压时的测量值均高于未受压时。
PEF 可作为咳嗽能力的定量指标，胸壁压迫可提高无效咳嗽患者的咳嗽能力。
