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第46卷第5期         徐小俊,王诗绮,丁文秋,等. F⁃V曲线吸气平台的慢性阻塞性肺疾病患者临床特征探讨[J].
                  2026年5月                     南京医科大学学报(自然科学版),2026,46(5):673-684                         ·677 ·


                                            表1 吸气平台组和非吸气平台组的一般资料比较
                 Table 1 Comparison of general information between the inspiratory plateau group and the non⁃inspiratory plateau group

                                                   Inspiratory plateau group  Non⁃inspiratory plateau
                                                                                                  2
                           Characteristic                                                       t/χ /Z      P
                                                         (n=53)              group(n=56)
                 Age(years,x ± s)                       68.28 ± 6.20          67.61 ± 6.10      -0.574    0.567
                 Sex[n(%)]                                                                       0.015    0.904
                  Male                                  44(83.02)             46(82.14)
                  Female                                09(16.98)             10(17.86)
                 Height(cm,x ± s)                      166.30 ± 6.67         166.95 ± 7.880      0.460    0.647
                 Weight(kg,x ± s)                       62.72 ± 11.80        064.86 ± 10.17      1.013    0.313
                 BMI[kg/m ,M(P25,P75 )]              23.51(19.72,24.71)    22.52(20.67,25.13)   -0.700    0.484
                        2
                 Smoking index[packs·years,M(P25,P75 )]  35.00(20.00,40.00)  30.00(16.25,45.00)  -0.649   0.516
                 Inhaled drugs[n(%)]                                                             1.930    0.667
                  Ⅰ                                     42(79.25)             39(69.64)
                  Ⅱ                                      1(1.89)               3(5.36)
                  Ⅲ                                      1(1.89)               1(1.79)
                  Ⅳ                                     09(16.98)             13(23.21)
                 Pulmonary function stages[n(%)]                                                 0.155    0.694
                  GOLD stage 2                          37(69.81)             41(73.21)
                  GOLD stage 3                          16(30.19)             15(26.79)
                   Ⅰ:no use or irregular use of inhaled medications;Ⅱ:use of one inhaled long⁃acting bronchodilator[long⁃acting β2⁃agonist(LABA)or long⁃acting
                muscarinic antagonist(LAMA)];Ⅲ:use of two inhaled long⁃acting bronchodilators;Ⅳ:combination of inhaled corticosteroids and 1-2 inhaled long⁃
                acting bronchodilators.
                                            表2 吸气平台组和非吸气平台组的肺通气功能比较
                Table 2  Comparison of pulmonary ventilation function between the inspiratory plateau group and the non⁃inspiratory
                        plateau group
                                                Inspiratory plateau group  Non⁃inspiratory plateau
                        Characteristic                                                         Z/t          P
                                                     (n=53)                group(n=56)
                 FEV1%pred[%,M(P25,P75 )]        54.50(48.50,58.00)     53.80(49.65,56.90)    -0.349       0.727
                 FEV1/FVC%pred[%,M(P25,P75 )]    61.40(54.85,67.90)     60.10(55.93,63.80)    -0.843       0.399
                 FVC%pred[%,M(P25,P75 )]         83.70(81.40,89.10)     86.60(82.63,90.10)    -1.886       0.059
                 FEF50%pred[%,M(P25,P75 )]       15.80(13.25,19.85)     15.20(12.30,18.75)    -0.916       0.360
                 MMEF%pred[%,M(P25,P75 )]        16.20(14.00,20.10)     16.30(13.48,18.78)    -0.725       0.469
                 PEF%pred[%,M(P25,P75 )]         43.10(35.60,51.10)     53.05(43.33,59.73)    -4.187     <0.001
                 PIF[L/s,M(P25,P75 )]             3.07(2.48,3.60)         4.87(4.01,5.67)     -7.121     <0.001
                 PEF/PIF[M(P25,P75 )]             1.04(0.85,1.22)         0.79(0.70,0.94)     -5.259     <0.001
                 FEV1/PEF(s,x ± s)                  0.47 ± 0.11             0.37 ± 0.08       -5.046     <0.001
                 VCmax%pred[%,M(P25,P75 )]       86.00(81.20,93.10)     87.75(84.20,92.65)    -1.022       0.307

                   FEF50%%pred:forced expiratory flow at 50% of FVC as a percentage of predicted value;VCmax%pred:maximal vital capacity as a percentage of
                predicted value.
                R20%pred、Rcentral 纳入多因素Logistic 回归方程,分            的期望频数与观察频数之间的差异无统计学意义,
                析吸气平台的相关因素,构建诊断中重度稳定期                             即模型拟合度较好,模型校正良好。结果发现,PIF
                COPD 患者合并吸气平台的多因素 Logistic 回归模                    对中重度稳定期 COPD 患者合并吸气平台的诊断
                型。通过向后回归得出的多因素回归模型包括                              具有统计学意义(OR=0.406,95%CI:0.180~0.914,

                PIF、PEF/PIF、FEV1/PEF 和 Rcentral,而排除 TLC%          P=0.030)。PEF/PIF 对中重度稳定期 COPD 患者合
                pred、R5%pred、R20%pred。Hosmer⁃Lemeshow 拟合优         并吸气平台的诊断具有统计学意义(OR=1.073,
                度检验得到的 P 值为 0.957,表明由预测概率获得                       95%CI:1.029~1.119,P < 0.001)。FEV1/PEF 对中重
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