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320排CT心外膜脂肪體積和冠脈鈣化積分與冠狀動脈狹窄的關系

2020-11-06 06:11:09高強鄧克學程好堂
中國醫(yī)藥導報 2020年26期
關鍵詞:冠心病研究

高強 鄧克學 程好堂

[摘要] 目的 探討320排CT心外膜脂肪體積(EATV)和冠脈鈣化積分(CACS)與冠狀動脈狹窄的關系。 方法 選取2017年10月—2019年4月于安徽省太和縣中醫(yī)院接受320排CT檢查的冠心病患者200例作為冠心病組,同時選取接受320排CT檢查且未發(fā)現(xiàn)冠狀動脈狹窄者40例作為對照組。采用Gensini積分系統(tǒng)將冠心病組患者分為低分組(Gensini評分<41分,85例)、中分組(41分≤Gensini評分<64分,65例)及高分組(Gensini評分≥64分,50例)。記錄并比較各組EATV及CACS。 結果 冠心病組EATV及CACS均高于對照組,差異有統(tǒng)計學意義(P < 0.05)。3亞組EATV及CACS比較差異有統(tǒng)計學意義(P < 0.05)。高分組EATV及CACS均高于低分組和中分組,中分組EATV及CACS均高于低分組,差異有統(tǒng)計學意義(P < 0.05)。EATV與CACS、病變血管支數(shù)、Gensini評分呈正相關(r = 0.332、0.421、0.451,P < 0.05),CACS與病變血管支數(shù)、Gensini評分呈正相關(r = 0.359、0.436,P < 0.05)。EATV預測冠狀動脈高分患者的曲線下面積(AUC)為0.75(P < 0.05),特異度為65.2%,靈敏度為84.2%,截斷值為191.25 cm3;CACS的AUC為0.75,特異度為61.8%,靈敏度為88.3%,截斷值為286.05分。結論 320排CT EATV及CACS與冠心病患者冠狀動脈狹窄呈正相關,且對預測重度冠狀動脈狹窄具有一定價值。

[關鍵詞] 320排CT;心外膜脂肪體積;冠脈鈣化積分;冠狀動脈狹窄

[中圖分類號] R543 ? ? ? ? ?[文獻標識碼] A ? ? ? ? ?[文章編號] 1673-7210(2020)09(b)-0041-05

[Abstract] Objective To investigate the relationship between epicardial adipose tissue volume (EATV) measurement and coronary calcification score (CACS) with coronary stenosis in 320-row CT. Methods A total of 200 patients with coronary heart disease underwent 320-row CT examination at Taihe County Traditional Chinese Medicine Hospital of Anhui Province from October 2017 to April 2019 were selected as coronary heart disease group, and 40 patients underwent 320-row CT examination without coronary artery stenosis were selected as control group. The patients in coronary heart disease group were divided into low score group (Gensini score < 41 points, 85 cases), middle score group (41 points ≤ Gensini score < 64 points, 65 cases), and high score group (Gensini score ≥ 64 points, 50 cases) according Gensini score system. EATV and CACS of each group were recorded and compared. Results EATV and CACS in coronary heart disease group were higher than those in control group, the differences were statistically significant (P < 0.05). There were significant differences in EATV and CACS among three subgroups (P < 0.05). EATV and CACS in high score group were higher than those in low score group and middle score group, while EATV and CACS in middle score group were higher than those in low score group, the differences were statistically significant (P < 0.05). EATV was positively correlated with CACS, number of diseased vessels and Gensini score (r = 0.332, 0.421, 0.451, P < 0.05). CACS was positively correlated with the number of vessels and Gensini score (r = 0.359, 0.436, P < 0.05). The area under curve (AUC) of EATV was 0.75 (P < 0.05), the specificity was 65.2%, the sensitivity was 84.2%, and the cut-off value was 191.25 cm3. AUC of CACS was 0.75, the specificity was 61.8%, the sensitivity was 88.3%, and the cut-off value was 286.05 points. Conclusion The 320-row CT EATV and CACS are positively correlated with coronary artery stenosis in patients with coronary heart disease, and have certain value in predicting severe coronary artery stenosis.

CACS是一種快速簡便地測量冠狀動脈壁中鈣含量的方法,研究顯示,在無癥狀的冠心病患者中,CACS可以用于預測冠心病預后,而與傳統(tǒng)的危險因素無關,在有癥狀的患者中,CACS和冠心病之間的關聯(lián)具有較高的靈敏度[18-20]。CACS和冠心病相關的心血管事件和死亡率之間的關聯(lián)已在多項研究中報道[21]。關于CACS在預測冠狀動脈狹窄方面的有效性仍存在爭議。一些研究顯示,CACS在某些年齡組或高危人群中的作用是有限的[22],但Gitsioudis等[22]研究使用64排CT。本研究結果提示冠心病組320排CT CACS顯著高于對照組,與既往研究結果相符[23]。此外,高分組CACS>中分組>低分組,差異有統(tǒng)計學意義,提示冠心病狹窄程度與CACS密切相關,且與病變血管支數(shù)、Gensini評分均呈正相關,提示隨著CACS增加,冠心病患者病變血管及狹窄程度增加。Almasi等[24]研究也證實,CACS與冠心病患者病變血管及狹窄程度呈正相關,與本研究結果相符。本研究還提示CACS對預測重度冠狀動脈狹窄具有一定價值。關于CACS用于預測冠狀動脈狹窄的研究結果差異較大,有研究認為,它可能是輕度至中度狹窄的良好預測因子[24],而有部分研究認為其預測價值不足[25],可能與CT分辨率、研究病理、個體差異等有關。目前320排CT下CACS和EATV與冠脈狹窄的報道極少,本研究選擇320排CT檢測CACS和EATV,具有分辨率高、圖像清晰、準確度高、非侵入性等優(yōu)點,本研究病例數(shù)充足,但為單中心研究,結果仍需多中心、大樣本量研究證實。

綜上,320排CT EATV及CACS與冠心病患者冠狀動脈狹窄呈正相關,且對預測重度冠狀動脈狹窄具有一定價值,可為臨床預測重度冠狀動脈狹窄提供指導。

[參考文獻]

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[6] ?高志紅,左玉強,秦會敏,等.冠心病患者心外膜脂肪體積與冠狀動脈狹窄程度相關性分析[J].中國心血管病研究,2020,18(2):115-119.

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[9] ?張國明,李曉燕,孫鋼,等.320排動態(tài)容積CT節(jié)段性鈣化積分對冠狀動脈病變診斷和介入治療的價值[J].中華臨床醫(yī)師雜志:電子版,2013,16(7):6928-6932.

[10] ?孟雪,許楠,席芊.雙能量CT和320排CT冠狀動脈減影技術的臨床應用[J].心血管病學進展,2020,41(5):504-507,512.

[11] ?中華醫(yī)學會心血管病學分會介入心臟病學組,中華醫(yī)學會心血管病學分會動脈粥樣硬化與冠心病學組,中國醫(yī)師協(xié)會心血管內科醫(yī)師分會血栓防治專業(yè)委員會,等.穩(wěn)定性冠心病診斷與治療指南[J].中華心血管病雜志,2018,46(9):680-694.

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