的：我們提出以平躺姿勢進行經皮腎臟造瘻的安全及方便性。材料與方法：我們醫院自2003年到2006年，一共以平躺姿勢處理了134位進行腎臟穿刺手術之病患（72男性，62女性）。病人平均年齡為49.5歲。其中有75位進行腎臟囊腫引流、而另外59位則是接受腎臟造瘻。所有的手術都是在局部麻醉或是靜脈麻醉下以超音波為導引進行腎臟穿刺。結果：平均手術時間為14.3±2.1分鐘（5~32分鐘）。手術的成功率與安全性與傳統的趴臥勢比較相當，只有其中3位接受腎臟造瘻者的引流管放置失敗。在134個手術當中，並沒有發生任何腹腔內臟（包括大腸）的穿刺傷。結論：我們的報告認為以平躺姿勢進行經皮腎臟造瘻是另外一種安全有效的方法。

OBJECTIVES: We advocate a modified supine position for a percutaneous renal approach which is justified due to its safety and convenience. MATERIALS AND METHODS: From January 2003 to June 2006, 134 percutaneous nephrostomies or drainage of renal cysts were performed in 72 males and 62 females at our institution. Patient ages ranged 23~81 (mean, 49.5) years. Under local or sedative anesthesia, a patient was placed in a supine position with a rolled-up towel below both the ipsilateral shoulder and hip, leaving ample space beneath the flank. The skin was punctured in a posterior axillary line under ultrasonographic guidance. RESULTS: The average operative time was 14.3±2.1 (range, 5~32) minutes. The renal puncture was similar to that used in the prone position under ultrasonography. Our success rate was compatible to that of the formal prone position. We experienced 3 failures in placing the nephrostomy catheter (pigtail) with loss of path during dilation of the tract. No serious complications, such as colon perforation, occurred. CONCLUSIONS: Percutaneous renal access under ultrasonographic guidance with a patient in the modified supine position offers another safe and convenient way to reach the kidneys.