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頁籤選單縮合
題 名 | Syndrome X: Pathophysiology and Clinical Management=X症候群之病理機轉及臨床處理 |
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作 者 | 陳肇文; 林幸榮; 丁紀臺; | 書刊名 | 中華醫學雜誌 |
卷 期 | 60:4 1997.10[民86.10] |
頁 次 | 頁177-183 |
分類號 | 415.31 |
關鍵詞 | 胸痛; 細小冠狀血管功能不良; 細小冠狀血管性心絞痛; X症候群; Chest pain; Coronary microvascular dysfunction; Microvascular angina; Syndrome X; |
語 文 | 英文(English) |
中文摘要 | X症候群目前被用來形容一群心絞痛病人其具有心肌缺氧的心電圖變化和正常的冠狀動脈攝影結果,而無冠狀動脈痙攣的現象。雖然X症候群的病人和冠狀動脈狹窄的病人一樣,都會有心絞痛和心肌缺氧的心電圖變化,它們的致病機轉卻大不相同。X症候群病人的心絞痛和心肌缺氧的成因常是多重而複雜的。以往研究發現微小冠狀血管功能不良可在這些病人身上產生心肌缺氧的現象。然而臨床上X症候群病人其心肌缺氧的症狀常多變甚至不明顯,顯示這種微小冠狀血管功能不良的現象是在心臟局部性散在分布且具有強烈的波動性。最近的研究指出X症候群病人的胸痛可以不伴隨臨床上心肌缺氧的證據,表示至少有一部份X症候群病人其胸痛可能來自於心臟的不正常痛覺。因此,X症候群是由不同種類的病人所組成的。我們必須注重病人個別的症狀,並進一步評估這些不同症狀的可能機轉,方可給予適當的治療。 |
英文摘要 | The term "syndrome X" is now widely used to specify a group of patients with anginal chest pain, ischemia-like electrocardiogram, normal coronary angiograms, and no evidence of coronary spasm. Though chest pain and exercise-induced myocardial ischemia may both be present in patients with syndrome X and those with coronary artery disease, the underlying pathogenesis of these two disease entities is different. In patients with syndrome X, the causes of angina and myocardial ischemia are multifarious while coronary angiograms are normal. Coronary microvascular function has been shown to be impaired in these patients. However, the presentation of myocardial ischemia may be varied and even subclinical, suggesting dynamic characteristics and regional distribution of coronry microvascular insufficiency in them. Recently, there is increasing evidence that chest pain may develop without detectable myocardial ischemia and has been attributed to abnormal pain perception in at least some of the patients. Thus, there is a heterogeneous group of patients with syndrome X. The rational patient management should be related to individual clinical presentation and depend upon the proper identification of the underlying mechanisms of anginal chest pain or myocardial ischemia or both in these patients. |
本系統中英文摘要資訊取自各篇刊載內容。