【摘要】 目的 探討經(jīng)支氣管鏡冷凍肺活組織檢查(TBLC)在間質(zhì)性肺疾病(ILD)和肺惡性病變中的診斷價(jià)值和安全性。方法 本研究為非隨機(jī)對(duì)照試驗(yàn)。采用非隨機(jī)抽樣的方法,選取2015年1月至2022年2月在清華大學(xué)附屬北京清華長(zhǎng)庚醫(yī)院呼吸與危重癥醫(yī)學(xué)科住院的ILD和肺部占位病變的患者55例。根據(jù)疾病不同分為ILD組(31例)和肺部占位組(24例),并收集2組的基本信息和臨床資料。根據(jù)術(shù)中情況先后分別采用經(jīng)支氣管鏡鉗夾活組織檢查(TBFB)和TBLC技術(shù)獲取肺活檢標(biāo)本,TBLC組無(wú)預(yù)置球囊,2組均同時(shí)送檢病理組織。采用Kappa檢驗(yàn)比較TBFB與TBLC病理診斷的一致性。采用受試者操作特征(ROC)曲線(xiàn)及Logistic回歸分析TBLC、TBFB單獨(dú)與聯(lián)合對(duì)肺部惡性病變的診斷效能。結(jié)果 55例患者中,男性占61.8%(34/55),吸煙者占40.0%(22/55),其中40例(72.7%)輕度出血,14例(25.5%)中度出血,1例(1.8%)無(wú)出血;未發(fā)生嚴(yán)重出血,未發(fā)生氣胸并發(fā)癥。ILD組患者中,男19例、女12例,年齡為(58.65±14.47)歲,年齡范圍為16~76歲。該組最終確診病例17例,未確診病例14例;確診病例中以特發(fā)性肺間質(zhì)纖維化和機(jī)化性肺炎為主(均為4例)。肺部占位組中,男15例,女9例,年齡為(63.17±10.77)歲,年齡范圍為40~79歲。該組最終確診病例21例,未診斷病例3例。確診病例中肺惡性病變16例,以肺腺癌為主(7例)。ILD組中,TBFB病理診斷率達(dá)19.4%,TBLC病理診斷率達(dá)51.6%,TBLC組病理診斷率高于TBFB組(P = 0.008)。肺部占位組中,TBLC病理診斷率同樣優(yōu)于TBFB病理診斷率(79.2% vs. 37.5%,P = 0.002)。TBFB、TBLC診斷肺惡性病變的ROC曲線(xiàn)下面積分別為0.77(95%CI 0.57~0.98)、0.83(95%CI 0.66~1.00)。結(jié)論 TBLC在ILD和肺惡性病變的診斷方面均存在優(yōu)勢(shì),臨床操作中出血風(fēng)險(xiǎn)較低,安全性良好。
【關(guān)鍵詞】 肺纖維化;肺腫瘤;經(jīng)支氣管鏡冷凍肺活檢;經(jīng)支氣管鏡鉗夾活檢;診斷一致性;曲線(xiàn)下面積
Diagnostic value and safety of transbronchial lung cryobiopsy in interstitial lung disease and malignant lung lesions
GUO Wenjia1*, ZHAO Lina2*, ZHANG Mingqiang1, WAN Yinghua1, MU Xiangdong1
(1.Department of Respiratory and Critical Care Medicine, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China; 2.Respiratory Medicine Examination Room, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China)
Co-first author: GUO Wenjia, ZHAO Lina
Corresponding author: MU Xiangdong, E-mail: mxda02600@btch.edu.cn
【Abstract】 Objective To analyze the diagnostic value and safety of transbronchial lung cryobiopsy (TBLC) in interstitial lung disease (ILD) and malignant lung lesions. Methods This study is a non-randomized controlled trial. Using the method of non-random sampling, 55 patients with ILD and pulmonary space-occupying lesions who were hospitalized in the Department of Respiratory and Critical Care Medicine of Beijing Tsinghua Changgung Hospital affiliated with Tsinghua University from January 2015 to February 2022 were selected . All patients were divided into the ILD group (n = 31) and pulmonary space-occupying lesion group (n = 24). Basic information and clinical data were collected in both groups. Transbronchial forceps biopsy (TBFB) and TBLC techniques were sequentially employed to obtain lung biopsy samples based on intraoperative conditions, with no pre-inserted balloon in the TBLC group. Biopsy samples in both groups were sent for pathological examination. Kappa test was used to compare the consistency of pathological diagnosis between TBFB and TBLC. The receiver operating characteristic (ROC) curve and Logistic regression analysis were used to analyze the diagnostic efficiency of TBLC and TBFB alone or these two combined for malignant pulmonary lesions. Results Among the 55 patients, 61.8% (34/55) were male and 40.0% (22/55) were smokers. 40 cases (72.7%) had mild bleeding, 14 cases (25.5%) had moderate bleeding, and 1 case (1.8%) had no bleeding. No severe bleeding events or pneumothorax events occurred. In the ILD group, 19 patients were male and 12 female, aged (58.65±14.47) years on average, ranged from 16 to 76 years. The diagnoses of 17 patients were confirmed and 14 unconfirmed cases in this group. Among the confirmed cases, idiopathic pulmonary interstitial fibrosis (n = 4) and organizing pneumonia (n = 4) accounted for the highest percentage. In the pulmonary space-occupying lesion group, 15 patients were male and 9 female, aged (63.17±10.77) years old on average, ranged from 40 to 79 years. The diagnoses of 21 patients were finally confirmed and 3 unconfirmed cases in this group. Among the confirmed cases, there were 16 cases of malignant lung lesions, primarily lung adenocarcinoma (n = 7). In the ILD group, the diagnostic rate of TBFB was 19.4% and 51.6% for TBLC, and the diagnostic rate in the TBLC group was higher than that in the TBFB group (P = 0.008). In the pulmonary space-occupying lesion group, the diagnostic rate of TBLC was also superior to that of TBFB (79.2% vs. 37.5%, P = 0.002). The area under the ROC curve of TBFB and TBLC in the diagnosis of malignant lung lesions was 0.77 (95%CI: 0.57-0.98) and 0.83 (95%CI: 0.66-1.00), respectively. Conclusion TBLC has significant advantages in the diagnosis of ILD and lung malignancies, with a low risk of bleeding and high safety in clinical practice.
【Key words】 Pulmonary fibrosis; Lung neoplasms; Transbronchial lung cryobiopsy; Transbronchial forceps biopsy;
Diagnostic concordance; Area under the ROC curve
經(jīng)支氣管鏡冷凍肺活組織檢查(transbronchial lung cryobiopsy,TBLC)是在氣管鏡下應(yīng)用冷凍探頭,利用高壓CO2或N2O氣體通過(guò)小孔釋放、節(jié)流膨脹制冷從而產(chǎn)生低溫的原理,在鏡下破壞并凍取組織的一種方法[1]。TBLC作為肺活組織檢查(活檢)的新型輔助手段,相較于傳統(tǒng)的經(jīng)支氣管鏡鉗夾活檢(transbronchial forceps biopsy,TBFB),取材組織較大且質(zhì)量較高,越來(lái)越受到臨床醫(yī)師的關(guān)注。國(guó)外研究表明,TBLC聯(lián)合多學(xué)科討論在間質(zhì)性肺疾?。╥nterstitial lung disease,ILD)中的診斷價(jià)值與外科肺活檢(surgical lung biopsy,SLB)相當(dāng),同時(shí)TBLC較SLB更安全,術(shù)后并發(fā)癥更少[2-3]。目前國(guó)內(nèi)指南中仍推薦TBLC操作時(shí)提前預(yù)置球囊以減少術(shù)中出血風(fēng)險(xiǎn)。但一次性球囊預(yù)置價(jià)格高昂,在一定程度上限制了TBLC技術(shù)的臨床應(yīng)用,也增加了患者的經(jīng)濟(jì)成本。本研究在常規(guī)備有可即時(shí)置入的止血球囊確保安全性的情況下,對(duì)符合指征的患者在不預(yù)置球囊的基礎(chǔ)上行TBLC,探討TBLC在ILD和肺部占位病變方面的診斷價(jià)值和安全性,為提高肺活檢的取材質(zhì)量及TBLC的臨床普及提供參考依據(jù)。
1 對(duì)象與方法
1.1 研究對(duì)象
本研究為非隨機(jī)病例對(duì)照試驗(yàn)。病例納入標(biāo)準(zhǔn):①選取2015年1月至2022年2月在清華大學(xué)附屬北京清華長(zhǎng)庚醫(yī)院呼吸與危重癥醫(yī)學(xué)科住院的ILD和肺部占位病變的住院初診患者;②住院同意完善電子氣管鏡并簽署同意書(shū);③術(shù)中同時(shí)行TBLC及TBFB留取組織標(biāo)本。排除標(biāo)準(zhǔn):①存在電子氣管鏡檢查的禁忌證(如急性心肌梗死、惡性心律失常、不穩(wěn)定型心絞痛、嚴(yán)重心肺功能不全、高血壓危象、嚴(yán)重肺動(dòng)脈高壓、顱內(nèi)高壓、急性腦血管事件、主動(dòng)脈夾層、主動(dòng)脈瘤、活動(dòng)性大咯血、妊娠、嚴(yán)重精神疾病和多系統(tǒng)器官功能衰竭等);②血液病、血小板減少或凝血功能障礙;③TBLC單純用于氣管鏡下治療者。最終納入55例患者,包括ILD患者31例,肺部占位病變患者24例;年齡為(60.62±13.07)歲,年齡范圍16~79歲。本研究經(jīng)參與者同意且簽署研究知情同意書(shū),并通過(guò)醫(yī)院倫理審查委員會(huì)批準(zhǔn)(批件號(hào): 22237-6-01)。
1.2 臨床資料收集
本研究應(yīng)用病例報(bào)告表,至少2位專(zhuān)科醫(yī)師系統(tǒng)回顧原始病歷,詳細(xì)準(zhǔn)確地記錄和核對(duì)每例納入患者的基本信息和臨床資料(性別、年齡、吸煙史、入院診斷、病理結(jié)果、確定診斷以及術(shù)中有無(wú)出血及氣胸)后進(jìn)行系統(tǒng)整理、錄入、提取并轉(zhuǎn)化為可分析的數(shù)據(jù)。參照文獻(xiàn)[1,4]按照4個(gè)不同等級(jí)進(jìn)行支氣管鏡下操作出血嚴(yán)重程度評(píng)分:1級(jí),指無(wú)出血;2級(jí),指輕度出血(自限性,僅通過(guò)抽吸即可控制,無(wú)需任何特殊干預(yù));3級(jí),指中度出血(應(yīng)用止血藥物、冰鹽水、血管收縮藥物如腎上腺素、凝血酶等);4級(jí),指重度出血(術(shù)中置入球囊導(dǎo)管壓迫止血或者致命性出血,需術(shù)后監(jiān)護(hù))。
1.3 器械準(zhǔn)備
支氣管鏡操作系統(tǒng)(日本Olympus公司290系統(tǒng)),電子支氣管鏡(日本Olympus公司BF-260、BF-P260、BF-F260、BF-H290、BF-1T290),超聲支氣管鏡操作系統(tǒng)(日本Olympus公司EU-ME1系統(tǒng)),超聲小探頭(日本Olympus公司,外徑
1.7 mm,頻率20 MHz),冷凍設(shè)備(北京庫(kù)藍(lán)科技有限公司K320冷凍手術(shù)治療機(jī),冷針直徑1.8 mm或2.1 mm),預(yù)置球囊(美國(guó)COOK公司,成人支氣管封堵導(dǎo)管型號(hào)7號(hào),導(dǎo)管長(zhǎng)度65 cm),可即時(shí)置入的止血球囊備用(INNOVEX支氣管封堵球囊,上海英諾偉醫(yī)療器械股份有限公司,型號(hào)規(guī)格IVX-OB-15、IVX-OB-09)。
1.4 操作方法
所有研究對(duì)象于全身麻醉氣管插管下行電子支氣管鏡檢查,術(shù)前完善高分辨率胸部CT,術(shù)中按需使用虛擬導(dǎo)航技術(shù)和超聲小探頭設(shè)備。先采用TBFB方法進(jìn)行肺活檢,觀察出血情況,給予相應(yīng)止血治療,在同一病變部位再次采用TBLC技術(shù)獲取肺活檢組織,并送檢。根據(jù)術(shù)者經(jīng)驗(yàn),若TBFB鏡下出血較多或不易控制,則不再行TBLC。
TBFB:鏡下應(yīng)用活檢鉗鉗夾,肺部占位性病變根據(jù)病變位置選擇普通黏膜活檢或透壁肺活檢,若病變位于支氣管腔內(nèi),則選擇普通黏膜活檢;若病變位于支氣管腔外,則選擇透壁肺活檢。ILD病變根據(jù)胸部CT病變表現(xiàn)及出血、氣胸風(fēng)險(xiǎn)選擇活檢部位,應(yīng)用鉗夾透壁肺活檢及經(jīng)支氣管冷凍肺活檢。常規(guī)取材4~6塊。
TBLC:術(shù)中常備可即時(shí)置入的止血球囊,因此不提前預(yù)置封堵球囊導(dǎo)管,于病變部位冷凍取材2~3塊,若術(shù)中出血較多,停止操作。同時(shí),針對(duì)肺部占位患者進(jìn)行TBLC操作時(shí),若存在支氣管腔內(nèi)病變則應(yīng)用支氣管腔內(nèi)冷凍活檢,若為鏡下不可見(jiàn)的支氣管腔外病變則應(yīng)用TBLC。盡量避免在腫瘤壞死區(qū)域取活檢。
2種方式獲取的組織標(biāo)本均于術(shù)后同一時(shí)間、統(tǒng)一送至我院病理科,常規(guī)由病理科2位副主任醫(yī)師進(jìn)行病理診斷,必要時(shí)加做特殊染色。最終以TBFB或TBLC病理結(jié)果任一陽(yáng)性作為診斷的金標(biāo)準(zhǔn)。
1.5 統(tǒng)計(jì)學(xué)方法
采用SPSS 28.0和R 4.0.4進(jìn)行數(shù)據(jù)分析。計(jì)數(shù)資料以n(%)表示,采用配對(duì)χ 2檢驗(yàn)比較TBFB與TBLC分別在ILD及肺部惡性病變的病理診斷率。病理診斷率被定義為T(mén)BLC或TBFB中的病理診斷結(jié)果與最終明確診斷結(jié)果一致的比例,反映了病理診斷的準(zhǔn)確性和可靠性。在肺部占位方面,應(yīng)用Logistic回歸建立臨床預(yù)測(cè)模型,模型1納入TBLC聯(lián)合年齡、性別因素[模型方程fit1lt;-glm(GOLD~TBLC+age+sex, family=binomial,data=lung)],模型2納入TBFB聯(lián)合年齡、性別因素[模型方程fit2lt;-glm(GOLD~TBFB+age+sex, family=binomial, data=lung)],繪制受試者操作特征(receiver operating characteristic,ROC)曲線(xiàn)并計(jì)算模型1和模型2的曲線(xiàn)下面積(area under curve,AUC),分析TBLC、TBFB對(duì)肺部占位惡性病變的診斷價(jià)值,AUC的比較采用DeLong檢驗(yàn)。雙側(cè)P lt;
0.05為差異有統(tǒng)計(jì)學(xué)意義。
2 結(jié) 果
2.1 一般臨床資料
55例患者中男性占61.8%(34/55),吸煙者占40.0%(22/55);40例(72.7%)輕度出血,14例(25.5%)中度出血,1例(1.81%)無(wú)出血;未發(fā)生嚴(yán)重出血事件,未發(fā)生氣胸事件。
31例ILD組患者中,男19例,女12例,年齡為(58.65±14.47)歲,年齡范圍為16~76歲。該組最終確診病例17例,未確診病例14例。確診病例中,特發(fā)性肺間質(zhì)纖維化(interstitial pulmonary fibrosis,IPF)4例、機(jī)化性肺炎4例、慢性嗜酸性粒細(xì)胞性肺炎3例、肺結(jié)節(jié)病3例、呼吸性細(xì)支氣管炎-間質(zhì)性肺病2例、非特異性間質(zhì)性肺炎1例。
24例肺部占位組患者中,男15例,女9例,年齡為(63.17±10.77)歲,年齡范圍為40~79歲。該組最終確診病例21例,未診斷病例3例。確診病例中,肺腺癌7例、肺小細(xì)胞癌3例、肺轉(zhuǎn)移癌3例、肺鱗癌2例、肺大細(xì)胞神經(jīng)內(nèi)分泌癌1例、肺錯(cuò)構(gòu)瘤3例、肺隱球菌病1例、機(jī)化性肺炎1例。
2.2 TBFB與TBLC病理診斷率的比較
ILD組(n = 31)中,TBFB診斷率達(dá)19.4%(6/31),TBLC診斷率達(dá)51.6%(16/31),TBLC組病理診斷率高于TBFB組(P = 0.008),見(jiàn)表1。肺部占位組(n = 24)中,TBFB診斷率達(dá)37.5%(9/24),TBLC診斷率達(dá)79.2%(19/24),TBLC組病理診斷率優(yōu)于TBFB組(P = 0.002),見(jiàn)表2。
2.3 TBFB與TBLC在肺部惡性病變中的診斷效能
TBFB在肺惡性病變?cè)\斷方面的AUC為0.77(95%CI 0.57~0.98,P = 0.007),靈敏度為1.00
(0.59,1.00),特異度為0.41(0.18,0.67);TBLC的AUC達(dá)0.83(95%CI 0.66~1.00,P = 0.021),靈敏度為0.93(0.66,1.00),特異度為0.60(0.26,0.88)。兩者ROC AUC比較差異有統(tǒng)計(jì)學(xué)意義(P = 0.026),見(jiàn)圖1。
3 討 論
組織學(xué)是部分ILD患者診斷中極其重要的一部分,臨床上獲取組織學(xué)標(biāo)本的手段主要包括SLB、TBLC、TBFB和經(jīng)皮肺穿刺活檢等[5]。SLB是被推薦最多的組織取材手段,可明顯提高診斷準(zhǔn)確率,但由于SLB與患者肺活檢術(shù)后死亡率增加明顯相關(guān)[6],因此在臨床上應(yīng)用于ILD受限。近年來(lái)TBLC的臨床價(jià)值逐步受到肯定。既往研究證明,TBLC在ILD方面的臨床診斷率可與SLB相當(dāng)[6-8]。Tomassetti等[7]在2016年發(fā)表的回顧性隊(duì)列研究共納入117例受試者(58例TBLC、59例SLB),結(jié)果顯示兩者在ILD診斷方面比較差異無(wú)統(tǒng)計(jì)學(xué)意義。2019年COLDICE研究成果發(fā)表,此項(xiàng)前瞻性多中心隊(duì)列研究共納入65例ILD患者,全身麻醉下行TBLC和SLB,兩者在病理診斷一致率高達(dá)70.8%,臨床診斷一致率高達(dá)76.9%;同時(shí),TBLC的出血風(fēng)險(xiǎn)約22%,以輕到中度出血為主,安全性較好[8]。在此基礎(chǔ)上,近年來(lái)的臨床研究進(jìn)一步探究了TBLC對(duì)于不同類(lèi)型ILD患者的診斷效能。2019年Romagnoli等[9]的一項(xiàng)小樣本研究中(n =
21),TBLC診斷IPF比例最高(9/21)。2022年Zaizen等[10]對(duì)TBLC在ILD不同病因的診斷靈敏度方面進(jìn)行更為細(xì)致的研究,結(jié)果顯示TBLC診斷特發(fā)性間質(zhì)性肺炎的靈敏度最高,其次是過(guò)敏性肺炎、結(jié)締組織病相關(guān)性間質(zhì)性肺?。ㄈ缦到y(tǒng)性硬化)。進(jìn)一步研究發(fā)現(xiàn),TBLC在特發(fā)性間質(zhì)性肺炎中的診斷靈敏度高于非特異性間質(zhì)性肺炎、過(guò)敏性肺泡炎和結(jié)締組織病相關(guān)性間質(zhì)性肺病??紤]到臨床安全性和可行性,為進(jìn)一步比較TBLC與TBFB在ILD診斷方面的價(jià)值,本研究于同一ILD患者病變處行TBFB和TBLC取材,減少影響因素,結(jié)果顯示未發(fā)生嚴(yán)重出血事件。同時(shí)本研究結(jié)果也顯示,TBLC對(duì)ILD的診斷率高于TBFB。這說(shuō)明,TBLC在ILD患者診斷安全性可行的基礎(chǔ)上,診斷效能較TBFB更可觀。2022年歐洲呼吸學(xué)會(huì)(European Respiratory Society,ERS)指南中也明確提到TBLC對(duì)于無(wú)法明確病因的ILD有重要的診斷價(jià)值,推薦結(jié)合患者的臨床特征、肺部高分辨率CT等方面綜合判斷,在多學(xué)科討論的基礎(chǔ)上做出最終病因的診斷[11-12]。
鑒于TBLC在ILD診斷上的優(yōu)勢(shì)和安全性,尤其是TBLC取材面積大可能有益于患者后期樣本檢測(cè),近年來(lái)臨床也逐漸開(kāi)始關(guān)注TBLC在肺癌診斷上的應(yīng)用價(jià)值研究[13]。2019年的一項(xiàng)回顧性研究納入可疑肺部惡性病變12例,TBLC診斷率為83.3%(10/12)[14]。2023年的一項(xiàng)前瞻性隊(duì)列研究對(duì)比了TBFB和TBLC,結(jié)果顯示TBLC的惡性病變?cè)\斷率為86%,TBFB診斷率為82.7%,兩者間診斷價(jià)值相當(dāng)(P = 0.206);TBLB聯(lián)合TBFB的診斷率可達(dá)到94%,且TBLC對(duì)于下葉病變的診斷度高于TBFB(94.5% vs. 75.7%,P = 0.008)[15]。近年研究顯示,相對(duì)于超聲內(nèi)鏡引導(dǎo)下針吸肺活檢,TBLC在肺惡性病變?nèi)〔姆矫婢邆淦洫?dú)特的優(yōu)勢(shì):①取材完整性好;②樣本基因檢測(cè)的癌細(xì)胞比例高;③樣本檢測(cè)到的靶向驅(qū)動(dòng)基因更全面[16-17]。
本研究納入肺部占位患者24例,最終確診惡性病變16例,良性病變5例,因良性病變種類(lèi)較多,無(wú)法逐一判斷診斷效能,因此本研究中主要對(duì)TBLC在肺部惡性占位病變的診斷效能進(jìn)行探討。結(jié)果顯示,TBLC在肺部惡性病變的診斷效能較優(yōu)異(AUC=0.83),同時(shí),未見(jiàn)嚴(yán)重不良事件。
近年來(lái)臨床研究顯示,TBLC輕至中度出血風(fēng)險(xiǎn)為9.9%~53.3%,無(wú)嚴(yán)重出血事件[5, 18-20]。筆者認(rèn)為,TBLC在規(guī)范操作的前提下,其出血風(fēng)險(xiǎn)在可控范圍內(nèi)。雖然目前仍推薦支氣管鏡下常規(guī)預(yù)置止血球囊至擬活檢目標(biāo)葉段支氣管內(nèi),作為T(mén)BLC并發(fā)出血的應(yīng)急預(yù)案[1],但是臨床上考慮到預(yù)置球囊的昂貴成本及必要性,在充分告知患者風(fēng)險(xiǎn)和獲益的前提下,結(jié)合術(shù)者支氣管鏡經(jīng)驗(yàn),本研究創(chuàng)新性采用不預(yù)置球囊的方式行TBLC,結(jié)果顯示55例受試者均未發(fā)生嚴(yán)重出血事件。但是,考慮到并非所有TBLC患者均可不預(yù)置球囊,術(shù)前需個(gè)體化謹(jǐn)慎評(píng)估TBLC的出血風(fēng)險(xiǎn)。在此,筆者提出幾點(diǎn)降低TBLC操作出血風(fēng)險(xiǎn)的臨床要點(diǎn)供臨床醫(yī)師探討。首先,TBLC術(shù)前應(yīng)謹(jǐn)慎評(píng)估TBLC的禁忌證[1]。除常規(guī)支氣管鏡檢查的內(nèi)容外,應(yīng)更為嚴(yán)格判斷患者的凝血6項(xiàng)和血小板水平是否存在異常,既往是否存在血液疾病,以術(shù)前充分評(píng)估出血風(fēng)險(xiǎn)。其次,TBLC術(shù)中應(yīng)結(jié)合術(shù)者豐富的氣管鏡經(jīng)驗(yàn),一方面可以應(yīng)用超聲內(nèi)鏡[21]或虛擬導(dǎo)航技術(shù)[22],通過(guò)快速精準(zhǔn)定位肺部病變部位和周?chē)M織,并制定進(jìn)鏡路線(xiàn),可有效減少出血風(fēng)險(xiǎn)。另一方面,術(shù)前充分清理氣道內(nèi)分泌物,術(shù)中動(dòng)作輕柔,注意把握冷凍時(shí)間(3~7 s)、冷凍氣源壓力(40~60 bar,1 bar=100 kPa)等因素,也是操作過(guò)程中減少出血風(fēng)險(xiǎn)的重要環(huán)節(jié)[23]。近期也有研究提到,相較于2.4 mm直徑的冷凍探頭,1.1 mm
及1.9 mm直徑的冷凍探頭可進(jìn)一步降低患者的術(shù)中出血風(fēng)險(xiǎn)[24]。目前臨床上由于TBLC常規(guī)預(yù)置球囊增加患者花費(fèi)等經(jīng)濟(jì)學(xué)因素,在一定程度上限制了TBLC的應(yīng)用,后續(xù)可進(jìn)一步細(xì)化TBLC預(yù)置球囊的條件要素,相信這對(duì)TBLC的臨床普及有重大意義。
本研究存在一定的局限性。首先,這是一項(xiàng)單中心非隨機(jī)病例對(duì)照研究,本研究主要比較了TBLC及TBFB組的病理診斷價(jià)值,因此未與外科肺活檢進(jìn)行對(duì)照。同時(shí),本研究雖比較TBLC及TBFB手段在ILD患者的病理診斷率,但并不排除臨床上存在ILD病理診斷誤診的可能性及其對(duì)統(tǒng)計(jì)學(xué)結(jié)果造成的影響。其次,本研究樣本量相對(duì)小,存在一定的選擇偏倚,但研究結(jié)果對(duì)比既往研究基本一致。此外,本研究設(shè)計(jì)在同一患者病變處分別行TBLC及TBFB以比較兩者診斷率,因此無(wú)法準(zhǔn)確區(qū)分TBFB及TBLC的出血率。但55例患者均未發(fā)生嚴(yán)重出血事件,在一定程度上可驗(yàn)證TBLC的安全性。因此,TBLC在ILD及肺惡性病變的診斷方面均存在一定優(yōu)勢(shì),且安全性可控。后續(xù)本研究組將針對(duì)臨床上TBLC預(yù)置球囊的時(shí)機(jī)和指征問(wèn)題做進(jìn)一步探討。
利益沖突聲明:本研究未受到企業(yè)、公司等第三方資助,不存在潛在利益沖突。
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(責(zé)任編輯:林燕薇)