本研究之目的旨在測試心衰竭患者之自我效能、功能狀態與憂鬱之相關性。研究以Bandura的社會學習理論為基礎，採用探索性和相關性研究設計。100位來自臺北地區的四家主要醫院門診且合乎選案條件之慢性心衰竭患者參與研究。測量工具包括：Jenkins自我效能量表、西雅圖心臟量表和老人憂鬱量表。結果顯示自我效能和憂鬱有顯著的負相關 (r = -.61, p < .001)；自我效能和功能狀態為正相關 (r = .55, p < .001)；而功能狀態和憂鬱為負相關 (r = -.33, p < .001)。 因徑分析結果顯示控制疾病嚴重度之後，自我效能和憂鬱有負向且直接的關係；經由功能狀態，自我效能和憂鬱有間接關係。模式之每一因徑關係均顯示統計上之意義 (p < .05)。本研究結果提供篩檢低自我效能、不良功能狀態和憂鬱傾向之慢性心衰竭患者之參考。針對患者之問題可發展和測試相關之護理措施以協助心衰竭患者調適。

　　　　　The purpose of this study was to test the relationships between perceived self-efficacy, functional status and depression in a group of chronic heart failure patients. The conceptual model for this study was primarily derived from Bandura's social learning theory. The study is based on an exploratory, correlational design. A sample of 100 chronic heart failure patients who met the inclusion criteria were recruited from four cardiovascular clinics of major hospitals in northern Taiwan. The instruments used in this study included Jenkins' Self-Efficacy Expectation Scales, Seattle Angina Inventory, and Geriatric Depression Scale. Results demonstrate a significant inverse relationship between perceived self-efficacy and depressive symptoms (r = -. 61, p < .001), a significant positive relationship between perceived self-efficacy and functional status (r = .55, p < .001), and a significant negative relationship between functional status and depressive symptoms (r = -. 33, p < .001). The findings of the path analysis support the hypothesis that after controlling for disease severity, perceived self-efficacy has a direct and negative effect on depressive symptoms. An indirect effect of perceived self-efficacy on depression through functional status in heart failure patients was also revealed in the finding. All paths in the model were significant (p < .05). Results of the study can help to identify heart failure patients who are at risk for low perceived self-efficacy, low functional status, and a depressed mood. Nursing intervention to address these factors can then be developed and tested.