摘要:目的"評價急診直接經(jīng)皮冠脈介入(PPCI)治療中經(jīng)指引導管冠狀動脈內(nèi)注射重組人TNK組織型纖溶酶原激活劑及腺苷注射液對急性ST段抬高型心肌梗死(ASTEMI)的療效。方法"選擇行急診PPCI的ASTEMI患者,按照隨機數(shù)字表法分為對照組和治療組。對照組給予PPCI術(shù)常規(guī)治療,若PPCI后梗死相關(guān)動脈(IRA)達到TIMI血流3級,則終止手術(shù);若TIMI血流≤2級,則應(yīng)用指引導管于冠脈內(nèi)注射硝普鈉、硝酸甘油、替羅非班改善冠狀動脈微循環(huán)功能障礙(CMD),直到IRA達到TIMI血流3級。治療組是在PPCI術(shù)常規(guī)治療基礎(chǔ)上,術(shù)中開通IRA后應(yīng)用指引導管于冠狀動脈內(nèi)注射重組人TNK組織型纖溶酶原激活劑8 mg 及腺苷注射液200 μg,若IRA達到TIMI血流"3級",則終止手術(shù);若TIMI血流≤2級,則再次注射腺苷注射液改善CMD,直到IRA達到TIMI血流3級。觀察指標,①心肌損傷指標:術(shù)前及術(shù)后12、24、36、48 h的血漿肌鈣蛋白I(cTnI)、肌酸激酶同工酶(CK-MB)、N端B型腦鈉肽(NT-pro BNP)水平;②心肌灌注指標:術(shù)后校正的TIMI幀數(shù)(CTFC) 、術(shù)后 90 min IRA 導聯(lián)ST段回落值(STR);③心肌缺血的程度:術(shù)后3 d行靜息D-SPECT+腺苷負荷D-SPECT檢查,觀察心肌17節(jié)段分布下心肌灌注總積分、心肌缺血總節(jié)段數(shù)情況;④術(shù)后30 d的藥物不良反應(yīng):皮下瘀斑、牙齦出血、消化道出血、泌尿系出血、血紅蛋白下降、腦出血;⑤術(shù)后30 d的主要不良心血管事件(MACE):心臟死亡、心肌梗死、心力衰竭、靶血管再次血運重建情況。"結(jié)果"①心"肌損傷指標:術(shù)前的cTnI、CK-MB、NT-pro BNP水平兩組患者差異均無統(tǒng)計學意義(均P>0.05),心肌損傷指標治療組均在術(shù)后12 h顯著低于對照組(均P<0.05),之后均趨勢下降,術(shù)后48 h兩組差異均無統(tǒng)計學意義(均P>0.05)。②心肌灌注指標:治療組術(shù)后CTFC均顯著優(yōu)于對照組(P<0.05)。應(yīng)用秩和檢驗,治療組術(shù)后 "90 min STR顯"著優(yōu)于對照組(Z=2.437,P=0.014)。③心肌缺血的程度:兩組患者在術(shù)后3 d行靜息D-SPECT+腺苷負荷D-SPECT檢查,在心肌17節(jié)段分布下心肌灌注總積分、心肌缺血總節(jié)段數(shù)情況,治療組在負荷缺血節(jié)段數(shù)、靜息灌注總評分、負荷灌注總評分均顯著優(yōu)于對照組(均P<0.05)。④術(shù)后30 d的藥物不良反應(yīng):兩組患者在皮下瘀斑、牙齦出血、消化道出血、泌尿系出血、血紅蛋白下降、腦出血發(fā)生率均無統(tǒng)計學差異(P>0.05)。⑤術(shù)后30 d的MACE情況:兩組患者在心臟死亡、心肌梗死、心力衰竭、靶血管再次血運重建情況以及總MACE發(fā)生率均無統(tǒng)計學差異(P>"0.05")。結(jié)論"急診PPCI中經(jīng)指引導管冠狀動脈內(nèi)注射重組人TNK組織型纖溶酶原激活劑及腺苷注射液對ASTEMI患者安全、有效,可改善心肌損傷、心肌灌注和心肌缺血。
關(guān)鍵詞:重組人TNK組織型纖溶酶原激活劑;腺苷注射液;直接經(jīng)皮冠狀動脈介入治療;冠狀動脈微循環(huán)功能障礙(CMD)
中圖分類號:R541.4""""文獻標志碼:A
DOI:10.7652/jdyxb202405015
Efficacy of recombinant human TNK tissue-type plasminogen activator and
adenosine injection for acute ST-segment elevation myocardial infarction
LI Liu""1",ZHENG Qinghou""1",ZHAN Yinge""1",WANG Le""1",CHEN Qincong""2",WANG Shuo""2
(1. Department of Cardiology, Hebei Medical University First Hospital, Shijiazhuang 050011;
2. Department of Cardiology, Shijiazhuang People’s Hospital, Shijiazhuang 050031, China)
ABSTRACT: Objective"To evaluate the efficacy of recombinant human TNK tissue-type plasminogen activator and adenosine injection through guiding in treating acute ST-segment elevation myocardial infarction (ASTEMI) in emergency primary percutaneous coronary intervention (PPCI). Methods"Patients with ASTEMI who chose to receive emergency PPCI were randomly divided into control group and treatment group according to a digital random table method. The control group received conventional treatment of PPCI. If the infarct-related artery (IRA) reached TIMI flow grade 3 after PPCI, the operation was terminated. If TIMI flow was ≤2, then a guide catheter to inject sodium nitroprusside, nitroglycerin, and tirofiban into the coronary artery to improve coronary microcirculation dysfunction (CMD) was applied until the IRA reached TIMI flow grade 3. The treatment group received the conventional treatment of PPCI, and after opening of the IRA during the operation, a guide catheter to inject recombinant human TNK tissue-type plasminogen activator (8 mg) and adenosine (200 μg) into the coronary artery was applied. If the IRA reached TIMI flow grade 3, the operation was terminated. If TIMI flow was ≤2, then adenosine injection was re-applied to improve CMD until the IRA reached TIMI flow grade 3. Observation indicators were as follows: ① myocardial injury indicators: cardiac troponin I (cTnI), creatine kinase isoenzyme (CK-MB), and N-Terminal pro-brain natriuretic peptide (NT-pro BNP) levels before and 12 h, 24 h, 36 h, and 48 h after surgery; ② myocardial perfusion indicators: corrected TIMI frame count (CTFC) after surgery and ST segment regression value (STR) at 90 min after surgery; ③ degree of myocardial ischemia: rest D-SPECT+adenosine stress D-SPECT examination at day 3 after surgery, observation of myocardial perfusion total score under 17 segment distribution and myocardial ischemia total segment number; ④ adverse drug reactions at day 30 after surgery: subcutaneous ecchymosis, gingival bleeding, gastrointestinal bleeding, urinary bleeding, hemoglobin decline, and cerebral hemorrhage; ⑤ major adverse cardiovascular events (MACE) at day 30 after surgery: cardiac death, myocardial infarction, heart failure, and target vessel revascularization. Results"① Myocardial injury indicators: There was no significant difference in the levels of cTnI, CK-MB, or NT-pro BNP before surgery between the two groups (all Pgt;0.05). The myocardial injury indicators were significantly lower in the treatment group than in the control group at 12 hours after surgery (all Plt;0.05), and then showed a downward trend. There was no significant difference between the two groups at 48 hours after surgery (all Pgt;0.05). ② Myocardial perfusion indicators: CTFC in the treatment group was significantly better than that in the control group after surgery (Plt;0.05). Using the rank sum test, the STR was significantly better in the treatment group than in the control group at 90 minutes after surgery (Z=2.437, P=0.014). ③ myocardial ischemia: Both groups underwent rest D-SPECT+adenosine stress D-SPECT examination at 3 days after surgery. Under the distribution of 17 myocardial segments, the total score of myocardial perfusion and the total number of myocardial ischemia segments in the treatment group were significantly better than those in the control group (all Plt;0.05). ④ Adverse drug reactions 30 days after surgery: There was no significant difference in subcutaneous ecchymosis, gingival bleeding, gastrointestinal bleeding, urinary system bleeding, hemoglobin decline, or cerebral hemorrhage between the two groups (Pgt;0.05). ⑤ MACE 30 days after surgery: There was no significant difference in cardiac death, myocardial infarction, heart failure, target vessel revascularization, or total MACE between the two groups (Pgt;0.05). Conclusion"The intra-coronary injection of recombinant human TNK tissue-type plasminogen activator and adenosine injection through a guiding catheter in emergency PPCI is safe and effective for the treatment of ASTEMI. It can improve myocardial injury, myocardial perfusion, and myocardial ischemia.
KEY WORDS: recombinant human TNK tissue-type plasminogen activator; adenosine injection; primary percutaneous coronary intervention; coronary microcirculation dysfunction (CMD)急性ST段抬高型心肌梗死(acute ST-segment elevation myocardial infarction,ASTEMI)是因冠脈粥樣斑塊破裂,造成血小板聚集并激活凝血機制,形成急性血栓堵塞冠脈的一種臨床綜合征""[1]"。對ASTEMI患者進行有效的再灌注治療,可以減少梗死面積,改善心功能,改善預(yù)后""[2]"。直接經(jīng)皮冠脈介入(primary percutaneous coronary intervention,"PPCI")是 ASTEMI患者發(fā)病12 h內(nèi)首選的再灌注方案""[3]"。在PPCI開通梗死相關(guān)動脈(infarct related artery,IRA)時,有5%~50% 的患者出現(xiàn)慢血流或無復(fù)流等冠狀動脈微循環(huán)功能障礙(coronary microcirculation dysfunction,CMD)""[4]"情況,這時雖然開通了IRA,但是心肌血液灌注不足,反而會加重心肌損傷,導致心力衰竭的發(fā)生率和死亡率增加""[5-6]"。只有在消除心外膜下冠脈阻塞的同時,保持冠脈微血管的功能,才能實現(xiàn)心肌水平的血液灌注,從而有效地拯救心肌細胞""[7]"。目前在術(shù)中多通過觀察心電圖ST段改變及傳統(tǒng)的TIMI血流分級或者TIMI心肌灌注幀數(shù)(TIMI myocardial perfusion frame count,TMPFC)來評估CMD的嚴重程度。TIMI血流3級僅代表心外膜血流情況正常,不代表心肌灌注正常""[8]",且TIMI 血流判斷主觀性強、不能定量,而校正的TIMI幀數(shù)( corrected TIMI frame count,CTFC) 可以對血流進行定量,可以更加精準地提供冠脈血流數(shù)據(jù)""[8]"。以色列Spectrum Dynamics Medical公司產(chǎn)心臟專用機(dynamic single-photon emission computed tomography,D-SPECT)進行心肌核素灌注顯像可準確評估心肌缺血程度""[9]"。CMD的防治措施包括術(shù)中冠脈內(nèi)注射溶栓藥物以及微血管擴張劑、血栓抽吸等""[10]"。本研究在ASTEMI患者急診PPCI治療中經(jīng)指引導管冠狀動脈內(nèi)注射重組人尿激酶原及腺苷注射液,探討經(jīng)指引導管冠狀動脈內(nèi)注射重組人TNK組織型纖溶酶原激活劑(16 mg/支,石藥集團銘復(fù)樂藥業(yè),商品名:銘復(fù)樂)及腺苷注射液("30 mL/90 mg/支",蓬萊諾康藥業(yè),商品名:艾朵)對患者CMD的療效,為改善PPCI后CMD提供新的臨床思路。
1"資料與方法
1.1"研究對象
以從2021年1月1日至2023年1月1日在河北醫(yī)科大學第一醫(yī)院心內(nèi)科住院的行急診PPCI術(shù)的ASTEMI患者為研究對象。應(yīng)用EXCEL生成隨機數(shù)字表,每位患者按照入組試驗的前后順序編號,試驗按照生成的隨機數(shù)字表安排患者入組,對照組100例,其中男性69例,女性31例,年齡42~68歲,平均(51.74±9.62)歲;治療組100例,其中男性66例,女性34例,年齡39~71歲,平均(53.44±8.67)歲。本研究獲得河北醫(yī)科大學第一醫(yī)院醫(yī)學倫理委員會審查批準,所有患者均自愿參與并簽署知情同意書。
入選標準:年齡20~75歲;符合臨床診斷為ASTEMI的患者(遵照2019急性ST段抬高型心肌梗死診斷和治療指南中的診斷""[11]"),發(fā)病在12 h以內(nèi),并行急診PPCI治療的患者。
排除標準:①已經(jīng)行靜脈溶栓術(shù)的患者;②對藥物“重組人TNK組織型纖溶酶原激活劑、腺苷注射液”過敏的患者;③有活動性出血或者近6個月有出血性疾病史的患者;④PCI術(shù)前左心室射血分數(shù)(left ventricular ejection fraction,LVEF)<30%的患者;⑤心室率≤50次/min、二度、三度房室傳導阻滯的患者;⑥冠脈造影示冠脈多支病變或術(shù)式復(fù)雜,比如手術(shù)需處理2根以上血管、手術(shù)時間超過2 h、慢性閉塞病變、應(yīng)用旋磨的患者;⑦患有除冠心病外其他嚴重心臟病導致心力衰竭的患者;⑧PCI術(shù)中發(fā)生嚴重并發(fā)癥,比如冠脈穿孔、冠脈夾層、分支血管閉塞的患者;⑨中樞神經(jīng)系統(tǒng)病變或者創(chuàng)傷病史;B10≥1 min的心肺復(fù)蘇史;B11嚴重肝病患者,包括肝衰竭、肝硬化、門靜脈高壓、活動性肝炎的患者;B12倫理委員會拒絕入選。
1.2"治療方案
本研究納入行急診PPCI治療的ASTEMI患者200例,按照隨機數(shù)字表法分為對照組100例和治療組100例。依據(jù)本試驗流程,所選患者入院均完善PCI術(shù)前常規(guī)檢查。遵照PCI術(shù)前服藥要求,入院后均給予雙聯(lián)抗血小板,然后依據(jù)病人病情給予冠心病二級預(yù)防、抗凝、改善心功能藥物。術(shù)中均應(yīng)用普通肝素抗凝(100 U/kg),兩組患者PCI術(shù)中均植入冠狀動脈雷帕霉素洗脫鈷基合金支架系統(tǒng)(上海微創(chuàng)醫(yī)療器械集團有限公司冠脈雷帕霉素洗脫鈷基合金支架系統(tǒng)Firebird2),術(shù)后殘余狹窄<10%。對照組給予PPCI術(shù)常規(guī)治療,若PCI后IRA達到TIMI血流3級,則終止手術(shù);若TIMI血流≤2級,則應(yīng)用指引導管于冠脈內(nèi)注射硝普鈉、硝酸甘油、替羅非班改善CMD,直到IRA達到TIMI血流3級。治療組是在PPCI術(shù)常規(guī)治療基礎(chǔ)上,術(shù)中開通IRA后應(yīng)用指引導管于冠狀動脈內(nèi)注射重組人TNK組織型纖溶酶原激活劑8 mg 3 min緩慢推注及腺苷注射液"200 μg 2 min緩"慢推注,若IRA達到TIMI血流3級,則終止手術(shù);若TIMI血流≤2級,則再次注射腺苷注射液改善CMD,直到IRA達到TIMI血流3級。
1.3"觀察指標
1.3.1"主要觀察指標
①心肌灌注指標:術(shù)后CTFC、心電圖ST段改變以術(shù)后 90 min IRA 導聯(lián)ST段回落值(ST segment resolution,STR)作為衡量指標,STR=(術(shù)前ST段抬高值-術(shù)后ST段殘余抬高值)/術(shù)前ST段抬高值。STR≥0.7代表心肌水平灌注完全恢復(fù);0.3≤STRlt;0.7 代表心肌灌注水平部分恢復(fù);STRlt;0.3 代表心肌水平灌注無恢復(fù)""[12]"。②心肌缺血的程度:術(shù)后3 d行靜息D-SPECT+腺苷負荷D-SPECT檢查,觀察心肌17節(jié)段分布下心肌灌注總積分、心肌缺血總節(jié)段數(shù)情況。
1.3.2"次要的觀察指標
心肌損傷指標:術(shù)前及術(shù)后12、24、36、48 h的血漿肌鈣蛋白I(cardiac troponin I,cTnI)、肌酸激酶同工酶(creatine kinase isomer-MB,CK-MB)、N端B型腦鈉肽(N-terminal pro-brain natriuretic peptide,NT-pro BNP)水平。
1.3.3"安全性指標
①術(shù)后30 d的藥物不良反應(yīng):皮下瘀斑、牙齦出血、消化道出血、泌尿系出血、血紅蛋白下降、腦出血。②術(shù)后30 d的主要不良心血管事件(major adverse cardiovascular events,MACEs):心臟死亡、心肌梗死、心力衰竭、靶血管再次血運重建情況。
1.4"統(tǒng)計學處理
所有數(shù)據(jù)均用SPSS 23.0軟件處理。連續(xù)性變量先進行正態(tài)分布檢驗,若符合正態(tài)分布,以(±s)表示,組間比較采用t檢驗;若不符合正態(tài)分布,以中位數(shù)及四分位數(shù)間距[M(Q"1",Q"3")]表示,組間比較采用U檢驗。計數(shù)資料以百分率(%)表示,采用χ"2檢驗比較組間差異,若發(fā)生率較低,則應(yīng)用Fisher確切概率法計算。Plt;0.05(雙側(cè))認為差異有統(tǒng)計學意義。
2"結(jié)""果
2.1"兩組患者術(shù)前臨床特征比較
兩組男性比例、年齡及合并高血壓、吸煙史、心腦血管病家族史患者比例比較差異均無統(tǒng)計學意義(均P>0.05,表1)。
2.2"兩組患者入院時合并用藥情況比較
兩組患者入院時合并使用阿司匹林、吲哚布芬、氯吡格雷、替格瑞洛、降糖藥、血管緊張素受體腦啡肽酶抑制劑的比例比較差異均無統(tǒng)計學意義(均P>"0.05",表2)。
2.3"兩組患者冠脈情況
兩組冠脈SYNTAX Ⅱ評分、平均靶血管狹窄程度、平均支架直徑、平均支架長度比較差異均無統(tǒng)計學意義(均P>0.05,表3)。兩組患者臨床特征、術(shù)前輔助檢查、合并用藥、冠脈情況差異均無統(tǒng)計學意義,說明兩組資料均衡,有可比性。
2.4"觀察指標
2.4.1"主要的觀察指標
心肌灌注指標:治療組術(shù)后CTFC均顯著優(yōu)于對照組(P<0.05,表4)。應(yīng)用秩和檢驗,治療組術(shù)后 90 min STR顯著優(yōu)于對照組(Z=2.437,P=0.014)。心肌缺血的程度:兩組患者在術(shù)后3 d行靜息D-SPECT+腺苷負荷D-SPECT檢查,在心肌17節(jié)段分布下心肌灌注總積分、心肌缺血總節(jié)段數(shù)情況,治療組在負荷缺血節(jié)段數(shù)、靜息灌注總評分、負荷灌注總評分均顯著優(yōu)于對照組(均"P<0.05")。
2.4.2"次要觀察指標
心肌損傷指標:術(shù)前的cTnI、CK-MB、NT-pro BNP水平兩組患者差異均無統(tǒng)計學意義(均P>0.05),利用兩因素重復(fù)測量方差分析,治療組術(shù)后12、24、36 h的cTnI、CK-MB、NT-pro BNP的數(shù)值均顯著低于對照組(均P<"0.05",表5)。
2.4.3"安全性指標
術(shù)后30 d的藥物不良反應(yīng):因病例數(shù)較少,應(yīng)用Fisher確切概率法計算。兩組患者的皮下瘀斑、牙齦出血、消化道出血、泌尿系出血、血紅蛋白下降、腦出血發(fā)生率均無統(tǒng)計學差異("P>0.05",表6)。術(shù)后30 d的主要不良心血管事件("major""adverse cardiovascular events,MACEs)情況:兩組患者在心臟死亡、心肌梗死、心力衰竭、靶血管再次血運重建情況以及總MACE發(fā)生率均無統(tǒng)計學差異(P>0.05)。無心臟死亡、心肌梗死病例;其中發(fā)生心力衰竭10例(對照組7例、治療組"3例"),應(yīng)用利尿、擴冠治療后均好轉(zhuǎn),心電圖無ST-T改變,確定為心梗泵衰竭導致;對照組發(fā)生2例靶血管再次血運重建,經(jīng)過造影確定為支架內(nèi)血栓,均為冠脈內(nèi)血栓負荷較重,由于害怕冠脈無復(fù)流,急診PCI術(shù)中未能充分后擴張的病例(表7)。
3"討""論
心臟外膜下冠脈主要負責血液的運輸,而冠脈微循環(huán)則負責心肌血液灌注和末梢的血液供應(yīng)""[13]"。由于常規(guī)介入造影僅能顯示直徑≥200 μm 的血管,難以直接觀察到冠狀動脈微血管,可直接反映微循環(huán)狀態(tài)的冠狀動脈內(nèi)多普勒或熱稀釋技術(shù)可定量測定冠狀動脈血流儲備(coronary flow reserve,CFR)及微循環(huán)阻力指數(shù) (index of microcirculatory resistance,IMR)""[4]",由于費用及時間限制,在急診PCI術(shù)中的應(yīng)用較少,CMD目前多通過間接的方法診斷,比如D-SPECT就是診斷CMD最敏感的檢測手段""[14]",術(shù)后90 min IRA導聯(lián)STR以及術(shù)后CTFC是最常用的間接量化評估CMD的方法,cTnI、CK-MB、"NT-pro BNP這"些心肌損傷指標也對CMD有輔助診斷作用。重組人TNK組織型纖溶酶原激活劑是第三代溶栓藥,較以往特異性纖溶酶原激活劑具有半衰期長、纖溶活性高等優(yōu)勢""[15]"。腺苷是一種內(nèi)源性嘌呤核苷,具有擴張血管、激活 K"ATP"通道、抑制血小板聚集及白細胞活化等的多靶點綜合效應(yīng)""[16]"。一項薈萃分析證實,STEMI患者術(shù)中使用腺苷可以減少TIMI血流lt;3 級的發(fā)生率""[17]"。另一項薈萃分析證實了冠狀動脈內(nèi)腺苷不僅能明顯增加術(shù)后STR,還能減少患者的MACE""[18]"。腺苷半衰期短,對血壓影響小,可在冠狀動脈內(nèi)多次給藥,非常適合急診PCI術(shù)中用藥治療CMD。
本研究在急診PPCI術(shù)中開通IRA后預(yù)先應(yīng)用指引導管于冠狀動脈內(nèi)注射重組人TNK組織型纖溶酶原激活劑8 mg 及腺苷注射液200 μg進行優(yōu)化處理,與以往的常規(guī)PPCI處理方式進行對比研究。兩組患者臨床基線均衡,有可比性;心肌損傷指標"cTnI"、CK-MB、NT-pro BNP水平在術(shù)后12 h治療組顯著低于對照組;心肌灌注指標CTFC、術(shù)后 90 min STR治療組顯著優(yōu)于對照組;心肌缺血的指標治療組在負荷缺血節(jié)段數(shù)、靜息灌注總評分、負荷灌注總評分均顯著優(yōu)于對照組,顯示出經(jīng)過重組人TNK組織型纖溶酶原激活劑8 mg 及腺苷注射液200 μg進行優(yōu)化處理后患者術(shù)中的心肌損傷更小、心肌灌注更好、心肌缺血范圍更小。而且兩組患者術(shù)后30 d的藥物不良反應(yīng)無統(tǒng)計學差異,顯示重組人TNK組織型纖溶酶原激活劑及腺苷注射液的藥物安全性良好。本研究兩組患者術(shù)后30 d的MACE無統(tǒng)計學差異,這與重組人TNK組織型纖溶酶原激活劑及腺苷注射液改善了心肌損傷、心肌灌注和心肌缺血的試驗結(jié)果不符,也和一些研究相悖""[18]",可能與本研究病例數(shù)偏少、隨訪時間偏短有關(guān),針對ASTEMI患者PPCI過程中CMD的更優(yōu)處理策略,有待于以后更深的"探索。
綜上所述,急診PPCI中經(jīng)指引導管冠狀動脈內(nèi)注射重組人TNK組織型纖溶酶原激活劑及腺苷注射液對ASTEMI患者安全、有效,經(jīng)過該優(yōu)化處理,改善了心肌損傷、心肌灌注和心肌缺血。后續(xù)針對MACE發(fā)生率的探索,仍需進一步增加病例數(shù)、延長隨訪時間去驗證。
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(編輯"張"敏)