通信作者:王倩,523199780@qq.com(ORCID:0009-0003-8598-1169)
摘要:目的探討經(jīng)頸靜脈肝內(nèi)門(mén)體分流術(shù)(TIPS)的肝硬化食管胃底靜脈曲張破裂出血患者出院30 d內(nèi)發(fā)生非計(jì)劃再入院危險(xiǎn)因素,并構(gòu)建風(fēng)險(xiǎn)預(yù)測(cè)列線圖模型。方法選取2020年1月—2023年6月在南京大學(xué)醫(yī)學(xué)院附屬鼓樓醫(yī)院因肝硬化食管胃底靜脈曲張破裂出血行TIPS的241例患者作為研究對(duì)象。分析患者30 d內(nèi)非計(jì)劃再入院情況,并依據(jù)是否發(fā)生非計(jì)劃再入院分為再入院組(n=36)和未再入院組(n=198)。收集患者臨床資料,符合正態(tài)分布的計(jì)量資料2組間比較采用成組t檢驗(yàn),偏態(tài)分布的計(jì)量資料2組間比較采Mann-Whitney U檢驗(yàn);計(jì)數(shù)資料2組間比較采用χ2檢驗(yàn)。Logistic回歸分析篩選出與非計(jì)劃再入院相關(guān)的獨(dú)立危險(xiǎn)因素。建立列線圖預(yù)測(cè)模型,繪制受試者工作特征曲線(ROC曲線)評(píng)估列線圖模型預(yù)測(cè)非計(jì)劃再入院發(fā)生的區(qū)分度;繪制校準(zhǔn)曲線評(píng)估列線圖模型預(yù)測(cè)非計(jì)劃再入院發(fā)生的一致性,采用R語(yǔ)言ResourceSelection包進(jìn)行Hosmer-Lemeshow評(píng)估模型的擬合度,決策曲線分析評(píng)估模型的實(shí)用性。結(jié)果年齡(OR=2.664,95%CI:1.139~6.233)、CTP評(píng)分(OR=1.655,95%CI:1.098~2.495)、血氨(OR=1.032,95%CI:1.016~1.048)是行TIPS患者出院30 d內(nèi)非計(jì)劃再入院的獨(dú)立危險(xiǎn)因素(P值均lt;0.05)。依據(jù)多因素分析結(jié)果,構(gòu)建風(fēng)險(xiǎn)預(yù)測(cè)列線圖模型,通過(guò)Bootstrap法重復(fù)抽樣1 000次展開(kāi)內(nèi)部驗(yàn)證,ROC曲線下面積為0.773,高于年齡(0.582)、CTP評(píng)分(0.675)、血氨(0.641),校準(zhǔn)曲線顯示列線圖模型預(yù)測(cè)非計(jì)劃再入院的概率與實(shí)際概率具有較好一致性,Hosmer-Lemeshow顯示擬合優(yōu)度良好(χ2=5.647 3,P=0.686 7)。結(jié)論年齡、CTP評(píng)分和血氨是TIPS術(shù)后30 d非計(jì)劃再入院的獨(dú)立危險(xiǎn)因素,以此建立的列線圖預(yù)測(cè)模型有助于預(yù)測(cè)行TIPS患者非計(jì)劃再入院發(fā)生風(fēng)險(xiǎn),為早期預(yù)防提供較為準(zhǔn)確的決策依據(jù)。
關(guān)鍵詞:肝硬化;門(mén)體分流術(shù),經(jīng)頸靜脈肝內(nèi);危險(xiǎn)因素
基金項(xiàng)目:國(guó)家自然科學(xué)基金(82100652);南京大學(xué)醫(yī)學(xué)院附屬鼓樓醫(yī)院護(hù)理科研項(xiàng)目(ZSA796-1)
Risk factors for unplanned readmission after transjugular intrahepatic portosystemic shunt in cirrhotic patients with esophagogastric variceal bleeding and construction of a nomogram model
YIN Qin,WU Zhaorong,ZHANG Feng,JIN Chunyan,CAO Yanping,XIAO Jiangqiang,ZHUGE Yuzheng,WANG Qian.(Department of Gastroenterology,Affiliated Drum Tower Hospital of Nanjing University Medical School,Nanjing 210008,China)
Corresponding author:WANG Qian,523199780@qq.com(ORCID:0009-0003-8598-1169)
Abstract:Objective To investigate the risk factors for unplanned readmission within 30 days after discharge incirrhotic patients with esophagogastric variceal bleeding undergoing transjugular intrahepatic portosystemic shunt(TIPS),and to construct a nomogram predictive model.Methods A total of 241 cirrhotic patients who underwent TIPS due to esophagogastric variceal bleeding in Affiliated Drum Tower Hospital of Nanjing University Medical School from January 2020 to June 2023 were enrolled as subjects,and unplanned readmission within 30 days was analyzed.According to the presence or absence of unplanned readmission,they were divided into readmission group with 36 patients and non-readmission group with 198 patients,and related clinical data were collected from all patients.The independent-samples t test was used for comparison of normally distributed continuous data between two groups,and the Mann-Whitney U test was used for comparison of non-normally distributed continuous data between two groups;the chi-square test was used for comparison of categorical data between two groups.A logistic regressionanalysis was used to identify independent risk factors for unplanned readmission.A nomogram prediction model was constructed,and the receiver operating characteristic(ROC)curve was plotted to assess its discriminatory ability for unplanned readmission;the calibration curve was plotted to evaluate the consistency of the nomogram model in predicting unplanned readmission;the ResourceSelection package of R language was used for the Hosmer-Lemeshow goodness-of-fit test to evaluate the degree of fitting of the mode;the decision curve analysis was used to investigate the practicality of the model.Results Age(odds ratio[OR]=2.664,95%confidence interval[CI]:1.139—6.233,Plt;0.05),CTP score(OR=1.655,95%CI:1.098—2.495,Plt;0.05),and blood ammonia(OR=1.032,95%CI:1.016—1.048,Plt;0.05)were independent risk factors for unplanned readmission within 30 days after discharge in the patients undergoing TIPS.The multivariate analysis showed that for the nomogram predictive model constructed in this study,repeated sampling for 1 000 times using the Bootstrap method was performed for internal validation,and the area under the ROC curve was 0.773,which was significantly higher than that of age(0.582),CTP score(0.675),and blood ammonia(0.641).The calibration curve showed good consistency between the probability of unplanned readmission predicted by the nomogram model and the actual probability,and the Hosmer-Lemeshow goodness-of-fit test showed good degree of fitting(c2=5.647 3,P=0.686 7).Conclusion Age,CTP score,and blood ammonia are independent risk factors for unplanned readmission within 30 days after TIPS,and the nomogram prediction model constructed based on these factors can help to predict the risk of unplanned readmission in TIPS patients and provide an accurate decision-making basis for early prevention.
Key words:Liver Cirrhosis;Portasystemic Shunt,Transjugular Intrahepatic;Risk Factors
Research funding:National Natural Science Found of China(82100652);Affiliated Drum Tower Hospital of Nanjing University Medical School Nursing Research Project(ZSA796-1)
經(jīng)頸靜脈肝內(nèi)門(mén)體分流術(shù)(transjugular intrahepatic portosystemic shunt,TIPS)能夠顯著降低門(mén)靜脈壓力,具有創(chuàng)傷小、恢復(fù)快的優(yōu)點(diǎn)[1],已被廣泛應(yīng)用于肝硬化門(mén)靜脈高壓失代償期患者[2-4],但術(shù)后常有肝性腦病、肝衰竭、支架狹窄或閉塞引起再出血等并發(fā)癥的發(fā)生[5-6],使患者遠(yuǎn)期獲益受到影響[7],且部分患者由于并發(fā)癥發(fā)生短期內(nèi)需要再次住院治療。30 d內(nèi)非計(jì)劃再入院是指前次住院診療結(jié)束,患者在出院后30 d內(nèi)無(wú)法預(yù)測(cè)的再入院,且再入院的原因是相同或相關(guān)疾?。?],再入院的發(fā)生影響患者的生活質(zhì)量、身心健康,給患者、醫(yī)院及社會(huì)帶來(lái)沉重負(fù)擔(dān)。2011年,我國(guó)衛(wèi)生部辦公廳把它作為重返類敏感指標(biāo)[9],國(guó)際上也將這項(xiàng)指標(biāo)用于評(píng)價(jià)各大醫(yī)院醫(yī)療和護(hù)理質(zhì)量[10]。國(guó)外的最新研究[11]顯示,TIPS患者出院30 d內(nèi)非計(jì)劃再入院發(fā)生率高達(dá)21%,再入院原因主要為肝性腦病和胸腹水;國(guó)內(nèi)關(guān)于非計(jì)劃再入院研究主要集中在外科手術(shù)、心血管系統(tǒng)、呼吸系統(tǒng)等慢性疾?。?2-14],尚缺乏關(guān)于肝硬化食管胃底靜脈曲張破裂出血行TIPS的患者非計(jì)劃再入院相關(guān)研究。為此,本研究擬分析本院行TIPS患者出院30 d內(nèi)非計(jì)劃再入院的危險(xiǎn)因素,并建立預(yù)測(cè)模型,為臨床醫(yī)護(hù)人員進(jìn)行早期預(yù)測(cè)和及時(shí)干預(yù)提供參考。
1資料與方法
1.1一般資料選取2020年1月—2023年6月在本院因肝硬化食管胃底靜脈曲張破裂出血行TIPS的241例患者作為研究對(duì)象。納入標(biāo)準(zhǔn):(1)年齡≥18歲;(2)因肝硬化食管胃底靜脈曲張破裂出血二級(jí)預(yù)防行TIPS;(3)病歷資料完整。排除標(biāo)準(zhǔn):(1)30 d內(nèi)有計(jì)劃再入院;(2)TIPS術(shù)后未能在常規(guī)時(shí)間內(nèi)正常出院;(3)失訪或因非肝硬化相關(guān)原因再入院;(4)合并惡性腫瘤;(5)資料不完整;(6)因頑固性腹水、復(fù)發(fā)性腹水以及肝腎綜合征行TIPS。
1.2資料收集從TIPS數(shù)據(jù)庫(kù)中提取。(1)一般資料:包括年齡、性別、合并癥(高血壓、糖尿病)、主要支付類型;(2)臨床資料:包括入院方式、總住院天數(shù)、脾切除病史、有無(wú)門(mén)靜脈血栓、既往出血次數(shù)、腹水、靜脈曲張類型及術(shù)中是否聯(lián)合側(cè)支血管栓塞等;(3)TIPS術(shù)前術(shù)后實(shí)驗(yàn)室檢查:終末期肝病模型(MELD)評(píng)分、Child-Turcotte-Pugh(CTP)評(píng)分、WBC、Hb、PLT、ALT、AST、PT、INR及血氨;(4)30 d天內(nèi)再入院情況、原因及支架通暢情況。
1.3統(tǒng)計(jì)學(xué)方法采用SPSS 26.0軟件進(jìn)行數(shù)據(jù)分析。符合正態(tài)分布的計(jì)量資料以±s表示,2組間比較采用成組t檢驗(yàn),偏態(tài)分布的計(jì)量資料以M(P25~P75)表示,2組間比較采用Mann-Whitney U檢驗(yàn);計(jì)數(shù)資料2組間比較采用χ2檢驗(yàn)。以是否非計(jì)劃性再入院為因變量,將單因素分析中Plt;0.1的變量作為自變量進(jìn)行Logistic回歸分析,最終篩選出與非計(jì)劃再入院相關(guān)的獨(dú)立危險(xiǎn)因素。應(yīng)用R軟件(4.2.2)建立列線圖預(yù)測(cè)模型;采用Bootstrap法重復(fù)抽樣1 000次展開(kāi)內(nèi)部驗(yàn)證,繪制受試者工作特征曲線(ROC曲線)評(píng)估列線圖模型預(yù)測(cè)非計(jì)劃再入院發(fā)生的區(qū)分度;繪制校準(zhǔn)曲線評(píng)估列線圖模型預(yù)測(cè)非計(jì)劃再入院發(fā)生的一致性,采用R語(yǔ)言ResourceSelection包進(jìn)行Hosmer-Lemeshow評(píng)估模型的擬合度,Pgt;0.05說(shuō)明擬合良好;決策曲線分析評(píng)估模型的實(shí)用性。Plt;0.05為差異有統(tǒng)計(jì)學(xué)意義。
2結(jié)果
2.1一般資料本研究共納入241例患者,去除住院期間死亡患者1例,未按計(jì)劃出院2例,資料不完整4例,最終納入234例患者。234例患者中男135例,女99例,年齡21~84歲,平均(57.72±11.19)歲。出院后30 d內(nèi)發(fā)生非計(jì)劃再入院患者共36(15.38%)例。再入院原因包括肝性腦病25例、消化道出血8例及腹水3例。本隊(duì)列無(wú)因TIPS支架失功再入院的患者。
2.2單因素分析將可能影響患者非計(jì)劃再入院的相關(guān)因素納入單因素分析,年齡、CTP評(píng)分、腹水、術(shù)前Alb及術(shù)后血氨是行TIPS患者出院30天內(nèi)非計(jì)劃再入院影響因素(P值均lt;0.05)(表1)。
2.3非計(jì)劃再入院多因素分析將單因素分析中Plt;0.1的因素納入二元Logistic回歸分析。結(jié)果顯示,年齡、CTP評(píng)分及術(shù)后血氨是行TIPS患者出院30 d內(nèi)非計(jì)劃再入院獨(dú)立危險(xiǎn)因素(P值均lt;0.05)(表2)。
2.4風(fēng)險(xiǎn)預(yù)測(cè)列線圖模型的構(gòu)建根據(jù)多因素Logistic回歸結(jié)果,將年齡、CTP評(píng)分、術(shù)后血氨指標(biāo)構(gòu)建行TIPS患者出院30 d內(nèi)非計(jì)劃再入院的風(fēng)險(xiǎn)預(yù)測(cè)列線圖模型(圖1)。將列線圖中每個(gè)變量進(jìn)行評(píng)分并求和,再根據(jù)總分評(píng)估非計(jì)劃再入院的概率。
2.5列線圖內(nèi)部驗(yàn)證通過(guò)Bootstrap法重復(fù)抽樣1000次,AUC為0.773(圖2)。此外,與單個(gè)指標(biāo)相比,ROC曲線分析提示該模型的AUC為0.777,高于年齡(0.582)、CTP評(píng)分(0.675)、術(shù)后血氨(0.641)(圖3)。采用R語(yǔ)言ResourceSelection包,對(duì)真實(shí)值和預(yù)測(cè)值進(jìn)行Hosmer-Lemeshow檢驗(yàn)發(fā)現(xiàn),實(shí)際非計(jì)劃再入院的發(fā)生概率和預(yù)測(cè)概率比較,差異無(wú)統(tǒng)計(jì)學(xué)意義(χ2=5.647 3,P=0.686 7),校準(zhǔn)曲線顯示列線圖模型預(yù)測(cè)非計(jì)劃再入院的概率與實(shí)際非計(jì)劃再入院發(fā)生的概率具有較好一致性(圖4);決策曲線評(píng)估模型的臨床有效性,分析提示當(dāng)該模型預(yù)測(cè)的概率閾值為0.04~0.85時(shí),模型預(yù)測(cè)具有臨床實(shí)用價(jià)值,患者凈獲益高(圖5)。
3討論
本研究發(fā)現(xiàn),我國(guó)肝硬化伴食管胃靜脈曲張破裂出血患者接受TIPS治療后順利出院30 d內(nèi)非計(jì)劃再入院率為15.38%,低于既往國(guó)外的研究[11]。首次發(fā)現(xiàn),年齡、CTP評(píng)分、TIPS術(shù)后高血氨是非計(jì)劃再住院的獨(dú)立危險(xiǎn)因素,并以此建立預(yù)測(cè)模型,能夠提高臨床醫(yī)護(hù)人員對(duì)高危非計(jì)劃再住院患者的早期識(shí)別。
張家齊等[15]研究顯示:年齡與乙型肝炎肝硬化失代償患者肝性腦病的發(fā)生有一定關(guān)聯(lián),本研究顯示,年齡≥65歲是TIPS術(shù)后患者發(fā)生非計(jì)劃再入院的危險(xiǎn)因素(Plt;0.05,OR=2.664)。CTP評(píng)分包括白蛋白、腹水、肝性腦病、凝血酶原時(shí)間和血清膽紅素[16],被廣泛用于評(píng)估肝功能不全的嚴(yán)重程度,CTP評(píng)分越高,肝臟儲(chǔ)備功能越差[17-18]。一項(xiàng)單中心回歸分析[19]表明,高CTP評(píng)分是肝硬化上消化道出血患者并發(fā)肝性腦病的獨(dú)立危險(xiǎn)因素。本研究也納入了此項(xiàng)指標(biāo),結(jié)果顯示:CTP評(píng)分是TIPS術(shù)后患者發(fā)生非計(jì)劃再入院的獨(dú)立危險(xiǎn)因素,CTP評(píng)分每增加1分,非計(jì)劃再入院風(fēng)險(xiǎn)增加了0.655倍(Plt;0.05,OR=1.655)。因此,臨床上應(yīng)加強(qiáng)術(shù)前圍術(shù)期患者肝功能的動(dòng)態(tài)評(píng)估,遵醫(yī)囑給予保肝藥物治療和用藥指導(dǎo),督促患者增加門(mén)診隨訪頻次,定期監(jiān)測(cè)肝功能水平,對(duì)降低非計(jì)劃性再入院發(fā)生率具有重要的臨床意義。國(guó)外研究[20]表明,血氨濃度與術(shù)后肝性腦病發(fā)生關(guān)系密切,患者術(shù)后血氨值越高,肝性腦病發(fā)生率越高,非計(jì)劃再入院的風(fēng)險(xiǎn)越大。本研究顯示,術(shù)后血氨水平也是發(fā)生非計(jì)劃再入院的獨(dú)立危險(xiǎn)因素,血氨值每增加1單位,發(fā)生非計(jì)劃再入院風(fēng)險(xiǎn)增加0.032倍(Plt;0.05,OR=1.032)。由于TIPS術(shù)后大量含氨豐富的血液未經(jīng)肝臟的解毒,直接進(jìn)入體循環(huán),增多的氨通過(guò)血腦屏障進(jìn)入大腦,對(duì)中樞神經(jīng)系統(tǒng)產(chǎn)生毒性作用,導(dǎo)致肝性腦病發(fā)生[21]。
有研究顯示,25%的患者出院后30 d再住院可通過(guò)早期風(fēng)險(xiǎn)識(shí)別和及時(shí)干預(yù)避免[22];12%~75%的非計(jì)劃再入院是可以通過(guò)醫(yī)護(hù)人員對(duì)患者的健康教育、出院前評(píng)估及出院后良好家庭照顧而避免[23]。本研究在單因素分析的基礎(chǔ)上進(jìn)行多因素Logistic回歸分析,獲得了3個(gè)影響因素,并以此建立了列線圖預(yù)測(cè)模型,整合并量化多個(gè)非計(jì)劃再入院發(fā)生的高危因素進(jìn)行綜合性風(fēng)險(xiǎn)評(píng)估,并通過(guò)Bootstrap法重復(fù)抽樣1 000次展開(kāi)內(nèi)部驗(yàn)證,證實(shí)本研究建立的列線圖預(yù)測(cè)模型有較高的準(zhǔn)確度與區(qū)分度,校準(zhǔn)曲線具有良好的一致性,決策曲線具有較高臨床應(yīng)用價(jià)值。且本研究中模型的預(yù)測(cè)指標(biāo)在臨床中能直接獲取,易于操作性,醫(yī)護(hù)人員可通過(guò)客觀量化的指標(biāo)進(jìn)行病情評(píng)估,識(shí)別高?;颊撸瑸閷?shí)施個(gè)體化、預(yù)見(jiàn)性的措施提供依據(jù),減少非計(jì)劃再入院發(fā)生,保障患者安全。
本研究的不足之處包括:首先,本研究是單中心研究,可能無(wú)法完全應(yīng)用于其他TIPS中心,例如,本隊(duì)列中并無(wú)患者因TIPS支架失功再次入院,但通常說(shuō)來(lái),TIPS支架失功是患者術(shù)后再次入院的原因之一,由于本中心患者在出院前常規(guī)復(fù)查支架通暢情況,對(duì)于急性支架失功患者出院前行支架再通,所以本隊(duì)列未出現(xiàn)支架失功再入院患者。其次,本研究只進(jìn)行了內(nèi)部驗(yàn)證,沒(méi)有進(jìn)行外部驗(yàn)證,在今后的研究中需要進(jìn)一步進(jìn)行外部驗(yàn)證來(lái)證實(shí)模型的實(shí)用性和外推性。
本研究通過(guò)對(duì)234例肝硬化食管胃靜脈曲張破裂出血行TIPS患者的臨床資料進(jìn)行統(tǒng)計(jì)分析,得出患者出院30 d內(nèi)非計(jì)劃再入院的危險(xiǎn)因素,構(gòu)建了簡(jiǎn)單實(shí)用的風(fēng)險(xiǎn)預(yù)測(cè)模型,能夠?yàn)榕R床識(shí)別TIPS術(shù)后非計(jì)劃入院高危人群提供幫助。但未來(lái)還需進(jìn)行多中心、大樣本、前瞻性的隊(duì)列研究,以獲得普適性的預(yù)測(cè)模型,進(jìn)行臨床推廣。
倫理學(xué)聲明:本研究方案于2021年1月6日經(jīng)南京大學(xué)醫(yī)
學(xué)院附屬鼓樓醫(yī)院倫理委員會(huì)審批,批號(hào):2021-004-01。
利益沖突聲明:本研究不存在任何利益沖突。
作者貢獻(xiàn)聲明:殷芹、肖江強(qiáng)負(fù)責(zé)課題設(shè)計(jì),資料分析,撰寫(xiě)論文;吳兆榮、金春燕、曹燕平負(fù)責(zé)數(shù)據(jù)收集、統(tǒng)計(jì)學(xué)分析;張峰、諸葛宇征、王倩負(fù)責(zé)擬定寫(xiě)作思路,論文修改,指導(dǎo)撰寫(xiě)文章并最后定稿。
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收稿日期:2024-01-15;錄用日期:2024-04-11
本文編輯:林姣
引 證 本 文:YIN Q, WU ZR, ZHANG F, et al. Risk factors for unplanned readmission after transjugular intrahepatic portosystemic shunt in cirrhotic patients with esophagogastric variceal bleeding and construction of a nomogram model[J]. J Clin Hepatol, 2024, 40(9): 1796-1801.
殷芹, 吳兆榮, 張峰, 等 . 肝硬化食管胃底靜脈曲張破裂出血患者 經(jīng)頸靜脈肝內(nèi)門(mén)體分流術(shù)后非計(jì)劃再入院的危險(xiǎn)因素分析及列 線圖模型構(gòu)建[J]. 臨床肝膽病雜志, 2024, 40(9): 1796-1801.