中圖分類號(hào):R734.2 文獻(xiàn)標(biāo)志碼:A DOI:10.11958/20250702
Abstract:ObjectiveTo construct amultivariable prediction model forassessing therisk of cardiopulmonary complication after thoracoscopic lobectomy in patients with stage non-small cell lung cancer (NSCLC). Methods Clinical data of 6OO patients with stage |-| NSCLC who underwent thoracoscopic lobectomy were retrospectively analyzed. Patientswere divided intothe complication group (84cases)and the non-complication group (516cases)based on the occurrence of postoperativecomplication within7days,includingatelectasis,pulmonary embolism,respiratory failure, chylothorax,massvepleuralefusion,hypoxemiaandatrialfibrilltionDemographiccharacteristics,preoperativepumoary functionassessment,pathological featuresand perioperativeindicatorswerecolected.MultivariateLogisticregression analysis was used toidentify independentrisk factors influencing postoperativecardiopulmonarycomplication inpatientsand construct a predictive model. Internal validation was performed using the Bootstrap resampling method (1 OOOiterations)to evaluate thediscrimination,calibrationand clinical decision-making valueof the model.ResultsMultivariateLogistic regressionanalysis identifiedthefolowing independentriskfactorsofpostoperativecardiopulmonarycomplication,ncluding age(OR=1.832,95%CI: 1.537-2.183),historyofchronicobstructive pulmonary disease (COPD)(OR=6.782,95%Cl: 2.685- 17.130), Karnofsky performance status (KPS) score ( OR =0.926,95%CI: 0.888-0.965), the percentage of forced expiratory volume in thefirst second tothe predictivevalue (FEV1%pred)(OR=0.906,95%CI: 0.845-0.972),the percentageof diffusing capacityforcarbon monoxide to the expected value(DLCO%pred)(OR=0.901,95%CI: 0.832-0.975),intraoperative blood loss(OR=1.025,95%CI:1.014-1.036)andone-lung ventilation time(OR=1.057,95%CI:1.034-1.080).Thearea under thecurve (AUC)of thecombineddiagnosiswas0.977 (95%CI: 0.965-0.989),with96.4%sensitivityand87.6 % (204號(hào) specificity. The Hosmer-Lemeshow test indicated excellent calibration ( χ2= 1.285, P =0.994).Decision curve analysis demonstrated significant clinical net benefitwhentherisk thresholdprobability rangedbetween20%and (204號(hào) 98% .ConclusionThe multivariable prediction model for cardiopulmonary complication after thoracoscopic lobectomy in stage l-l| NSCLC patients exhibits strong predictive performance.
Key words:cavcinoma,non-small-cellung;risk factors; toracoscopy;cardiopulmonarycomplications;predictivemodel
1對(duì)象與方法
肺癌是全球發(fā)病率與死亡率最高的惡性腫瘤之一,其中非小細(xì)胞肺癌(non-small-cell lung cancer,NSCLC)是肺癌中最常見的病理學(xué)類型,約占85%[1] 。隨著低劑量CT篩查的普及,I一Ⅱ期NSCLC的早期診斷率顯著提升。胸腔鏡手術(shù)(video-assisted thoracoscopic surgery,VATS)憑借創(chuàng)傷小、恢復(fù)快等優(yōu)勢(shì),已成為早期NSCLC根治性治療的首選術(shù)式[2]。然而,術(shù)后心肺并發(fā)癥(如心律失常、肺炎、肺不張等)的發(fā)生率仍高達(dá) 15%~25% ,顯著延長(zhǎng)住院時(shí)間、增加醫(yī)療成本,甚至影響患者遠(yuǎn)期生存[3]。目前,術(shù)后心肺并發(fā)癥的危險(xiǎn)因素研究主要聚焦于高齡、術(shù)前肺功能減退及長(zhǎng)期吸煙等單一變量[4]。但臨床證據(jù)表明,心肺并發(fā)癥的發(fā)生涉及患者生理狀態(tài)、手術(shù)應(yīng)激及圍術(shù)期干預(yù)等多維度因素的協(xié)同作用[5-6]。因此,本研究擬通過聯(lián)合患者基線特征、手術(shù)參數(shù)及圍術(shù)期動(dòng)態(tài)指標(biāo),開發(fā)VATS術(shù)后心肺并發(fā)癥預(yù)測(cè)模型,以期突破傳統(tǒng)單因素分析的局限性,為術(shù)后風(fēng)險(xiǎn)分層提供精準(zhǔn)量化工具。
1.1研究對(duì)象回顧性納入2023年1月—2023年9月在本院行胸腔鏡肺葉切除術(shù)的I一Ⅱ期NSCLC患者600例。其中男312例,女288例,年齡40\~75歲,平均( 62.3±8.5 )歲;體質(zhì)量指數(shù)(BM I)18.5~34.2kg/m2 ,平均 (23.8±3.6)kg/m2 。納入標(biāo)準(zhǔn):(1)術(shù)后病理確診為I—Ⅱ期NSCLC,符合《NCCN腫瘤臨床實(shí)踐指南:非小細(xì)胞肺癌》的診斷標(biāo)準(zhǔn)[7]。(2)Karnofsky功能狀態(tài)(Karnofsky performance status,KPS)評(píng)分 ?60 分。(3)術(shù)式為VATS肺葉切除術(shù) + 系統(tǒng)淋巴結(jié)清掃術(shù)。(4)病例資料完整。排除標(biāo)準(zhǔn):(1)嚴(yán)重心/肺基礎(chǔ)疾病。(2)既往有胸部手術(shù)史。根據(jù)術(shù)后7d是否肺不張、肺栓塞、呼吸衰竭、乳糜胸、大量胸腔積液、低氧血癥、心房顫動(dòng)等并發(fā)癥,分為并發(fā)癥組(84例)與無并發(fā)癥組(516例)。本研究經(jīng)醫(yī)院倫理委員會(huì)批準(zhǔn)(批號(hào):NCC2023c-202),患者或家屬均簽署知情同意書。
1.2研究方法
1.2.1手術(shù)方法所有納入病例均接受胸腔鏡輔助肺葉切除聯(lián)合系統(tǒng)性淋巴結(jié)清掃術(shù)?;颊呷〗?cè)臥位,經(jīng)雙腔氣管插管實(shí)施靜吸復(fù)合全身麻醉,維持健側(cè)肺單肺通氣。于患側(cè)胸壁第4或第5肋間腋中線建立單孔操作通道,并以此作為操作孔及觀察孔。置入 30° 胸腔鏡探查胸腔,明確病變范圍及毗鄰結(jié)構(gòu),完整暴露靶肺葉,依次離斷肺靜脈、支氣管及動(dòng)脈分支,使用直線切割吻合器處理肺裂,經(jīng)操作孔取出切除標(biāo)本。系統(tǒng)性清掃肺門(第10—14組)及縱隔(第2、4、7-9組)淋巴結(jié)。術(shù)畢留置胸腔引流管,逐層縫合切口。術(shù)后常規(guī)給予二代頭孢菌素預(yù)防感染,并根據(jù)引流量及胸管引流液性質(zhì)決定拔管時(shí)機(jī)。
1.2.2臨床資料采集通過醫(yī)院信息系統(tǒng)收集資料。(1)人口學(xué)特征:性別,年齡,BMI分級(jí)[正常 (18.5~23.9kg/m2) )超重 (24.0~27.9kg/m2) 及肥胖 gtrsim28.0kg/m2 ][8,吸煙史( ?6 個(gè)月),合并癥[包括慢性阻塞性肺疾?。–OPD)冠狀動(dòng)脈粥樣硬化性心臟?。ü谛牟。└哐獕杭?型糖尿病],術(shù)前KPS評(píng)分。(2)肺功能評(píng)估:術(shù)前1d采用德國(guó)耶格公司JAEGERMasterScreen肺功能檢測(cè)系統(tǒng),按照美國(guó)胸科學(xué)會(huì)/歐洲呼吸學(xué)會(huì)標(biāo)準(zhǔn)操作規(guī)程,測(cè)定患者術(shù)前第1秒用力呼氣容積占預(yù)計(jì)值百分比( FEV1%pred) 及一氧化碳彌散量占預(yù)計(jì)值百分比 (DLCO%pred) ,選取3次測(cè)量的最佳值。(3)病理特征:記錄病變側(cè)別(左/右肺);根據(jù)術(shù)后組織病理學(xué)檢查確定腫瘤分化程度(高/中/低分化);依據(jù)美國(guó)癌癥聯(lián)合委員會(huì)(AmericanJointCommitteeonCancer,AJCC)第8版TNM分期系統(tǒng)確定腫瘤病理分期(I/Ⅱ期);根據(jù)世界衛(wèi)生組織肺癌分類標(biāo)準(zhǔn)確定組織學(xué)亞型(腺癌/鱗癌/其他)。(4)圍手術(shù)期指標(biāo)。 ① 手術(shù)相關(guān)參數(shù):記錄從皮膚切開至縫合完成的總手術(shù)時(shí)間,采用吸引瓶定量與紗布稱重法計(jì)算術(shù)中失血量。 ② 麻醉管理指標(biāo):由麻醉記錄系統(tǒng)(麥迪斯頓AIMSV5.0)自動(dòng)記錄從啟動(dòng)單側(cè)通氣至恢復(fù)雙肺通氣的精確單肺通氣時(shí)間;通過MindrayBeneViewT8麻醉監(jiān)護(hù)儀持續(xù)監(jiān)測(cè)并自動(dòng)記錄手術(shù)全過程中血氧飽和度 (SpO2 的最低值。
1.3統(tǒng)計(jì)學(xué)方法 采用SPSS26.0及R語言(version4.2.2)進(jìn)行統(tǒng)計(jì)分析。計(jì)量資料以 表示,行t檢驗(yàn);計(jì)數(shù)資料以例或例(%) 表示,行 χ2 檢驗(yàn)。通過Logistic單因素分析篩選 Plt;0.2 的變量,采用逐步回歸法(前進(jìn)法,納入標(biāo)準(zhǔn) Plt;0.05 ,剔除標(biāo)準(zhǔn) Pgt; 0.1)建立最終預(yù)測(cè)模型并繪制列線圖,采用Bootstrap重抽樣法(1000次)進(jìn)行內(nèi)部驗(yàn)證,通過受試者工作特征(ROC)曲線及曲線下面積(AUC)評(píng)價(jià)模型區(qū)分度,Hosmer-Lemeshow檢驗(yàn)評(píng)估校準(zhǔn)度, Plt;0.05 為差異有統(tǒng)計(jì)學(xué)意義。
2結(jié)果
2.12組患者一般資料比較與無并發(fā)癥組相比,并發(fā)癥組的年齡較大,COPD、冠心病、高血壓、2型糖尿病合并比例較高,手術(shù)時(shí)間和單肺通氣時(shí)間延長(zhǎng),術(shù)中失血量更多,而術(shù)前KPS評(píng)分、DLCO%pred、術(shù)中最低SpO2 及 FEV1%pred 降低 (Plt;0.05 ,見表1。
2.2I—Ⅱ期NSCLC患者術(shù)后發(fā)生心肺并發(fā)癥的多因素Logistic回歸分析將I—Ⅱ期NSCLC患者并發(fā)心肺并發(fā)癥情況記為因變量(并發(fā)癥 ,無并發(fā)癥
),將單因素Logistic回歸篩選出的COPD(否 =0 是 =1 )、年齡(實(shí)測(cè)值)、術(shù)前KPS評(píng)分(實(shí)測(cè)值)、FEV1%pred(實(shí)測(cè)值) .DLCO% pred(實(shí)測(cè)值)術(shù)中出血量(實(shí)測(cè)值)單肺通氣時(shí)間(實(shí)測(cè)值)均記作自變量。經(jīng)多因素Logistic回歸分析發(fā)現(xiàn),年齡、COPD、術(shù)中出血量、單肺通氣時(shí)間、KPS評(píng)分、FEV1%pred及 DLCO%pred 均是心肺并發(fā)癥的影響因素( (Plt; 0.05),見表2。根據(jù)多因素Logistic回歸構(gòu)建預(yù)測(cè)模型Log
年齡 +1.914× COPD- 0.077× 術(shù)前KPS評(píng)分 -0.099×FEV1%pred- 0.105×DLCO%pred+0.025× 術(shù)中出血量 +0.056× 單肺通氣時(shí)間。
2.3列線圖風(fēng)險(xiǎn)預(yù)測(cè)模型的構(gòu)建及驗(yàn)證將多因素Logistic回歸分析篩選的7個(gè)獨(dú)立影響因素作為預(yù)測(cè)指標(biāo),構(gòu)建I一Ⅱ期NSCLC患者并發(fā)心肺并發(fā)癥的風(fēng)險(xiǎn)預(yù)測(cè)列線圖模型,見圖1。運(yùn)用Bootstrap法對(duì)列線圖模型進(jìn)行驗(yàn)證,Hosmer-Lemeshow檢驗(yàn)未拒絕擬合優(yōu)度( χ2=1.285 P=0.994 ),表明聯(lián)合模型具有穩(wěn)定的校準(zhǔn)度,見圖2。ROC曲線結(jié)果顯示,預(yù)測(cè)模型的AUC為( 、敏感度為 96.4% ,特異度為 87.6% ,見表3、圖3。DCA曲線顯示,風(fēng)險(xiǎn)閾值概率在 20%~98% 時(shí),模型具有較高的凈獲益值,見圖4。
3討論
NSCLC患者胸腔鏡術(shù)后發(fā)生心肺并發(fā)癥是多種病理生理機(jī)制共同作用的結(jié)果。本研究發(fā)現(xiàn),年齡、COPD、術(shù)前KPS評(píng)分、肺功能指標(biāo)、術(shù)中出血量及單肺通氣時(shí)間是主要影響因素,而聯(lián)合預(yù)測(cè)模型通過整合多維指標(biāo)顯著優(yōu)化了風(fēng)險(xiǎn)分層能力,為臨床精準(zhǔn)干預(yù)提供了新思路。
本研究結(jié)果顯示,單肺通氣時(shí)間延長(zhǎng)是術(shù)后心肺并發(fā)癥的獨(dú)立危險(xiǎn)因素 (OR=1.057) ,AUC達(dá)0.785。其機(jī)制可能與線粒體-炎癥小體軸失衡密切相關(guān)[9]。研究表明,單肺通氣導(dǎo)致的機(jī)械牽張及缺血-再灌注損傷可誘導(dǎo)肺泡上皮細(xì)胞線粒體膜電位下降,促使活性氧(ROS)過量生成[10]。過量ROS不僅直接損傷DNA和脂質(zhì)膜,還可通過核因子 κB/ NOD樣受體蛋白3(NF-kB/NLRP3)通路激活炎癥級(jí)聯(lián)反應(yīng)[1]。一方面,ROS 促進(jìn)NLRP3炎癥小體組裝,觸發(fā)胱天蛋白酶-1依賴的肺組織焦亡,釋放白細(xì)胞介素(IL)-1β、IL-18等促炎因子[12];另一方面,線粒體DNA泄漏至胞質(zhì),通過STING通路激活I(lǐng)型干擾素反應(yīng),進(jìn)一步放大肺實(shí)質(zhì)炎癥損傷,從而導(dǎo)致肺不張及低氧血癥的發(fā)生[13]
本研究發(fā)現(xiàn) FEV1%pred 升高是術(shù)后心肺并發(fā)癥的保護(hù)因素,提示肺功能儲(chǔ)備對(duì)術(shù)后恢復(fù)有重要影響。從病理生理學(xué)角度,F(xiàn)EV1下降提示小氣道阻塞與肺彈性回縮力減退,氣流受限使氣道分泌物滯留,增加細(xì)菌定植風(fēng)險(xiǎn);同時(shí),術(shù)后鎮(zhèn)痛藥物進(jìn)一步抑制咳嗽反射,共同促進(jìn)肺不張形成[14]。低FEV1患者常伴隨慢性低氧血癥,術(shù)中最低 SpO2 較低,肺血管平滑肌細(xì)胞Kv通道表達(dá)下調(diào),導(dǎo)致肺動(dòng)脈高壓代償性調(diào)節(jié)能力喪失,加劇通氣/血流比例失調(diào),誘發(fā)術(shù)后難治性低氧血癥[15]。值得注意的是,近期研究發(fā)現(xiàn), FEV1%pred 較低的患者肺泡巨噬細(xì)胞中過氧化物酶體增殖物激活受體γ(PPARy)活性降低,可能通過抑制抗炎介質(zhì)分泌,加重術(shù)后肺內(nèi)炎癥反應(yīng)[1],這為肺功能基線評(píng)估的預(yù)測(cè)價(jià)值提供了新的思路。
本研究結(jié)果顯示,COPD是心肺并發(fā)癥發(fā)生的強(qiáng)預(yù)測(cè)因素 (OR=6.782 ),這可能與COPD相關(guān)的慢性氣道炎癥、黏液分泌增加及纖毛功能障礙有關(guān)。
一些研究顯示,COPD患者術(shù)后氣道微生物組穩(wěn)態(tài)失衡、肺微生物多樣性下降與術(shù)后肺部感染密切相關(guān)[7],而COPD患者分泌的炎性因子可通過旁分泌作用激活內(nèi)皮細(xì)胞間黏附分子1(ICAM-1)表達(dá),促進(jìn)中性粒細(xì)胞肺內(nèi)浸潤(rùn)及中性粒細(xì)胞胞外誘捕網(wǎng)形成,加劇術(shù)后急性肺損傷[18]。此外,COPD患者術(shù)后氧化應(yīng)激水平升高[19],通過Toll樣受體9-髓系分化因子88(TLR9-MyD88)信號(hào)通路激活全身炎癥反應(yīng),與術(shù)后房顫的發(fā)生存在潛在關(guān)聯(lián)[20]。
本研究還發(fā)現(xiàn),高齡、術(shù)前低KPS評(píng)分、術(shù)中出血量增加及DLCO%pred下降均是術(shù)后心肺并發(fā)癥的獨(dú)立危險(xiǎn)因素,這反映了患者整體功能狀態(tài)、手術(shù)創(chuàng)傷程度及肺彌散功能對(duì)術(shù)后恢復(fù)的綜合影響。年齡增長(zhǎng)與心肺功能儲(chǔ)備下降密切相關(guān),研究表明高齡患者心室重塑能力減弱, β- 腎上腺素能受體敏感性降低,術(shù)后容量負(fù)荷調(diào)節(jié)能力受限,易發(fā)生心律失常及心功能不全[2I]。低KPS評(píng)分反映患者整體功能狀態(tài)不佳,既往研究證實(shí) KPSlt;90 分的患者術(shù)后早期活動(dòng)能力有限,深靜脈血栓風(fēng)險(xiǎn)明顯增加22,且肌肉力量下降導(dǎo)致咳嗽效率降低,不利于術(shù)后痰液排出。術(shù)中出血量增加提示手術(shù)創(chuàng)傷程度較大,血紅蛋白下降導(dǎo)致載氧能力減弱,同時(shí)失血觸發(fā)的炎癥-凝血級(jí)聯(lián)反應(yīng)促進(jìn)肺微血栓形成,加重肺血管阻力[23]。DLCO特異性反映肺泡-毛細(xì)血管膜氣體交換能力。Leng等[24]研究發(fā)現(xiàn)DLCO降低患者術(shù)后氧合指數(shù)顯著降低,與氧化應(yīng)激標(biāo)志物丙二醛水平升高及肺表面活性物質(zhì)分泌減少相關(guān),增加了急性呼吸窘迫綜合征的發(fā)生風(fēng)險(xiǎn)。
本研究雖建立了預(yù)測(cè)模型,但仍存在局限性:回顧性設(shè)計(jì)中潛在混雜因素(如術(shù)前營(yíng)養(yǎng)狀態(tài))未完全控制;本研究為單中心數(shù)據(jù),未來需通過多中心隊(duì)列(如SEER數(shù)據(jù)庫)驗(yàn)證模型普適性;此外,本研究對(duì)機(jī)制探索不足,未來研究可結(jié)合代謝組學(xué)(如乳酸丙酮酸比值)及影像組學(xué)(CT紋理特征)構(gòu)建多模態(tài)預(yù)測(cè)體系。
綜上所述,I—Ⅱ期NSCLC患者胸腔鏡術(shù)后心肺并發(fā)癥的發(fā)生與年齡增長(zhǎng)、COPD、低KPS評(píng)分、肺功能下降、術(shù)中出血量增加及單肺通氣時(shí)間延長(zhǎng)顯著相關(guān),基于上述指標(biāo)構(gòu)建的列線圖預(yù)測(cè)模型可有效篩選術(shù)后心肺并發(fā)癥高?;颊撸瑸閲g(shù)期精準(zhǔn)干預(yù)提供客觀依據(jù)。
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(2025-02-21收稿2025-04-10修回)
(本文編輯 胡小寧)