Journal List > Korean J Adult Nurs > v.25(5) > 1094446

Korean J Adult Nurs. 2013 Oct;25(5):567-573. Korean.
Published online October 31, 2013.
© 2013 Korean Society of Adult Nursing
A Study on Fluid Intake Measurements
Chang Kwan Lee, Yu Kyung Kim, Myung Hwa Seo, Kyung Mee Lee and Ju Eun Lee
Department of Nursing, Samsung Medical Center, Seoul, Korea.

Corresponding author: Lee, Chang Kwan. Department of Nursing, Samsung Medical Center, 81 Irwon-ro Gangnam-gu, Seoul 135-710, Korea. Tel: +82-2-3410-2104, Fax: +82-2-3410-0031, Email:
Received June 25, 2013; Revised September 04, 2013; Accepted October 24, 2013.



The purpose of this study was to compared two methods for measuring fluid intake and to assess the most effective method.


Data from 44 hospitalized patients with chronic kidney disease was analyzed. Two methods were used. The liquid method is to measure the daily intake of water in the form of pure water or some other beverage and IV fluid, the liquid-solid method is to measure the daily intake of water which enters by the oral route and IV fluid.


The daily intake of fluid was 1483.10mL and 2245.99mL respectively. The fluid output was 1883.72 mL. The Intra-Class Correlation (ICC) between the liquid method and the liquid-solid method and fluid output was 0.64 and 0.69, respectively. The correlation between differences of fluid in two methods and body weight change was r=.47 (p<.001) and r=.56 (p<.001), respectively.


The results of this study suggest that there are no difference between the two measuring methods as to reflecting the most close value to fluid output. And the difference between intake and output by two methods is correlated with body weight change. Therefore, it can be suggested that the either method could be useful as patients' fluid intake measurement.

Keywords: Fluid balance; Body weight measurements; Intake


Table 1
General and Disease-related Characteristics of the Participants (N=44)
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Table 2
Comparison of Amount of Fluid Intake and Output between Two Different Methods (N=44)
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Table 3
Difference of Intra-class Correlations between Liquid and Liquid-solid Methods (N=44)
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Table 4
Correlation between Differences in Fluid Intake and Output by Two Different Methods and Weight Change (N=44)
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