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논문분류	춘계학술대회 초록집
제목	Usefulness of Urinary Arginine Vasopressin, Aquaporin-2 and Bioimpedance Spectroscopy for Diagnosis of Edema
저자	Jae Seok Kim, Hyeoncheol Park, Byoung Geun Han, Seung Ok Choi, Jae Won Yang
출판정보	2014; 2014(1):
키워드	부종, 바소프레신, 아쿠아포린
초록	Aim: Bioimpedance measurement may be useful in diagnosing edema. However, other available methods have not been investigated sufficiently. This study aims to investigate whether urinary AVP and AQP-2 assessments can be useful in diagnosing edema. Methods: The study included thirty-three patients complaining of edema, and who didn’t have a history of edema- related disease and relevant medication. Body fluid excess was determined by bioimpedance measurement and presented as OH (overhydration) value. OH 1 means 1 liter excess of body fluid. The amounts of 24-hr urinary AVP, AQP-2 excretions were also measured. We compared the urinary AVP, AQP-2 excretions between apparent and inapparent edema groups. Lastly, we identify idiopathic edema patients, and investigated urinary AVP, AQP-2 in it. Results: The OH value of total subjects was 0.1 indicating no body fluid excess, while 24-hr urinary AVP, AQP-2 excretions respectively decreased to 6.7 ng (reference: 34-70 ng/day) and 0.9 ug (reference: 600-1200 or 11 ug/day) indicating edematous status. There was significantly negative correlation between the OH value and 24-hr urinary AVP excretion (p=0.020). In addition, the apparent edema group had less 24-hr urinary AVP excretion than the inapparent edema group (p=0.019). In the idiopathic edema patients, the OH value was - 0.28, while 24-hr urinary AVP, AQP-2 excretions decreased to 8.7 ng and 0.9 ug respectively. Conclusion: This study indicates that urinary AVP assessment can be useful in diagnosing edema. Besides urinary AVP and AQP-2 assessments are believed to be more useful in diagnosing uncertain or idiopathic edema than bioimpedance measurement.
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