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研究生:廖哲偉
研究生(外文):Che-Wei Liao
論文名稱:原發性高醛固酮症病人動脈硬化於治療後回復之探討
論文名稱(外文):Reversal of Arterial Stiffness in Primary Aldosteronism After Treatment
指導教授:林彥宏林彥宏引用關係
口試委員:陳文鍾何奕倫王宗道吳允升
口試日期:2015-07-01
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:臨床醫學研究所
學門:醫藥衛生學門
學類:醫學學類
論文種類:學術論文
論文出版年:2015
畢業學年度:103
語文別:中文
論文頁數:31
中文關鍵詞:原發性高醛固酮症腎上腺分泌性腺瘤腎上腺摘除脈搏波速動脈壁硬化
外文關鍵詞:primary aldosteronismadenomaadrenalectomyPWVarterial stiffness
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原發性高醛固酮症,顧名思義就是體內自發性的產生過多的醛固酮所產生的病變。在所有原發性高醛固酮症的病人中,最常見的是腎上腺分泌性腺瘤及腎上腺過度增生;一些其他的基因突變也會造成原發性高醛固酮症。這些病人除了因為長期高血壓帶來的影響之外,心血管系統也會因為過多的醛固酮而比本態性高血壓的病人有更多結構上的病變,罹患心血管疾病的風險更高。
醛固酮對心血管系統的影響是可逆的。不管是腎上腺增生的病人接受藥物治療,抑或是分泌性腎上腺腫瘤的病人接受手術切除,在治療之後肇因高醛固酮引起的左心室肥大、心臟血管的纖維化和和動脈壁硬化等都會改善。
脈搏波速(pulse wave velocity, PWV)是一種量化動脈硬度的非侵襲性指標。雖然已有實驗證實腎上腺分泌性腺瘤的病人在開刀摘除腫瘤之後動脈硬化的程度會改善,但相關的細節付之闕如。本研究旨在於探討腎上腺醛固酮分泌性腺瘤病人在手術治療之後動脈硬化恢復的相關細節。
我們在2006年3月到2012年1月之間前瞻性的收案102位成年、罹患腎上腺醛固酮分泌性腺瘤準備接受切除手術的患者。我們在術前量測他們的肱踝脈搏波速(baPWV)、心踝脈搏波速(haPWV)及其他生化、生理指標,並在術後六個月及術後一年重複同樣的測量,再加以比較分析。
不論是baPWV或是haPWV皆在術後前六個月內有顯著下降(baPWV1636 ± 310 降至 1533 ± 278 cm/s, p <0.001, haPWV 1096 ±138降至1048 ±129 cm/s, p<0.001)。其他的生理生化指標包括血壓、血中鉀離子濃度及血中醛固酮濃度、腎素活性等也都有顯著的進步。然而,在後續六個月除了血中醛固酮濃度之外都沒有進一步的顯著改變。
經分析,治療前baPWV大小的決定性因子為高血壓病史長短、及治療前收縮壓。利用同樣的方法,得到治療前haPWV的決定性因子為年齡、高血壓病史長短、治療前收縮壓及治療前舒張壓。對baPWV前六個月變化量而言,決定因子為治療前baPWV(β = -0.292 , 95% C.I. -0.404~-0.179, p <0.001)及前六個月舒張壓變化量(β=9.137 , 95% C.I. 6.279~11.996, p <0.001),而haPWV前六個月變化量的決定因子為治療前haPWV(β = -0.242 , 95% C.I. -0.373~-0.111, p <0.001)、前六個月舒張壓變化量(β = 5.781 , 95% C.I. 4.309~7254, p <0.001),及對數轉換後血漿腎素活性前六個月變化量( β = -23.718, 95% C.I. -43.297~-4.140, p <0.018)。
腎上腺醛固酮分泌性腫瘤的病人在術後六個月內高醛固酮症的臨床指標性表徵,包括高血壓、低血鉀及動脈壁硬化等都有顯著改進,但之後除了血中醛固酮濃度有反彈性的上升之外其他表現就沒有進一步的顯著變化。術前PWV的決定性因子有高血壓病史長短及術前收縮壓等;PWV前六個月變化量的決定性因子為術前PWV及舒張壓前六個月的變化量等。由於PWV的高低和心血管疾病的風險有高度相關,藉由接受治療讓PWV下降或許意謂著同時降低高醛固酮病人相關的心血管疾病風險。不過這仍需要進一步的大規模臨床試驗來證實。

Primary aldosteronism (PA) was one of the most common causes of secondary hypertension. Exposure to excessive aldosterone led to increased arterial stiffness. The effect of adrenalectomy on arterial stiffness reversibility was seldom reported. Besides, the time course of arterial stiffness reversal and the actual predicting factors on arterial stiffness reversal were still unclear.
We prospectively enrolled 102 patients with aldosterone producing adenoma (APA) from March 2006 to January 2012. We measured the pulse wave velocity (PWV) between brachial-ankle (baPWV) and heart-ankle (haPWV) before, and 6 months and 12 months after adrenalectomy of all enrolled patients. All other physiological and biochemistry parameters were collected at the same time and analyzed after the 1-year follow-up.
The baseline baPWV averaged as 1636± 310 cm/s while haPWV as 1096±138cm/s. The determinant factors to baseline baPWV were age, duration of hypertension, and baseline systolic blood pressure (SBP) after multi-variable linear regression analysis. Similarly, the determinant factors for baseline haPWV were age, duration of hypertension, baseline systolic pressure and diastolic pressure (DBP). After treatment, the patients’ PWV decreased significantly during the first 6-month (baPWV 1533 ± 278 at 6-month, p < 0.001; haPWV 1048±129 at 6-month, p<0.001). No further reduction was noted during the following 6 month (baPWV 1562±31 at 12-month, p = 0.248; haPWV 1049±130 at 12-month, p=0.415). After multi-variable regression analysis, the determinants of baPWV decrement at 6 months (ΔbaPWV0-6mo) were decrement of diastolic blood pressure at 6 months (ΔDBP0-6mo) and the baseline baPWV. On the other hand, the determinants for the change of haPWV at 6 months (ΔhaPWV0-6mo) were baseline haPWV, ΔDBP0-6mo and the change of log-transformed plasma renin activity (ΔLogPRA0-6mo)
The arterial stiffness of APA patients could be reversed after surgical treatment in the first 6 months after adrenalectomy. The determinant factors of baseline PWV included age, duration of hypertension and baseline SBP, and baseline DBP (for haPWV). The determinant factors of ΔPWV are baseline PWV, ΔDBP0-6mo and ΔLogPRA0-6mo (for ΔhaPWV). Since higher PWV was closely correlated with higher cardiovascular risks, the decrease in PWV might also imply reducing CV disease risks. However, we needed a further large scale clinical trial focusing on the long-term outcomes to clarify this.

口試委員會審定書 …………………………………………………………………… i
誌謝 …………………………………………………………………………… ii
中文摘要 …………………………………………………………………………… iv
英文摘要 …………………………………………………………………………… vi
碩士論文內容
第一章 緒論 …………………………………………… 1
第二章 研究方法與材料 …………………………………………… 4
第三章 結果 …………………………………………… 6
第四章 討論 …………………………………………… 7
第五章 展望 …………………………………………… 10
第六章 論文英文簡述(Summary) …………………………………………… 12
第七章 參考文獻 …………………………………………… 19
第八章 圖表
表 1 …………………………………………… 23
表2 …………………………………………… 25
表3 …………………………………………… 26
表4 …………………………………………… 28
圖1 …………………………………………… 30


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