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Artikel Application of refractometry to quality assurance monitoring of parenteral nutrition solutions  
Oleh: WEI-KUO, CHANG ; YOU-CHEN, CHAO ; MING-KUNG, YEH
Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Asia Pacific Journal of Clinical Nutrition (keterangan: ada di Proquest) vol. 17 no. 01 (2008), page 116.
Topik: refractometer; refractive index; quality assurance; nutrition; parenteral nutrition
Ketersediaan
  • Perpustakaan FK
    • Nomor Panggil: A27.K.2008.01
    • Non-tandon: 1 (dapat dipinjam: 0)
    • Tandon: tidak ada
    Lihat Detail Induk
Isi artikel Parenteral nutrition (PN) solution contains various concentrations of dextrose, amino acids, lipids, vitamins, electrolytes, and trace elements. Incorrect preparation of PN solution could lead to patient death. In this study we used the refractive index as a quality assurance tool to monitor the preparation of PN solution. Refractive indices of single nutrient components and PN solutions consisting of various concentrations of dextrose, amino acids, electrolytes, and lipids were measured. A mathematical equation and its linear plot were generated then used to predict the refractive index of the PN solution. The best-fit refractive index for PN solution (i.e., the predicted refractive index) = 0.9798 × (% dextrose) + 1.2889 × (% amino acids) + 1.1017 × (% lipids) + 0.9440 × (% sum of the electrolytes) + 0.5367 (r2 = 0.99). This equation was validated by comparing the measured refractive indices of 500 clinical PN solutions to their predicted refractive indices. We found that 2 of the 500 prepared samples (0.4%) had less than the predicted refractive index (< 95%). Refractive index can be used as a reliable quality assurance tool for monitoring PN preparation. Such information can be obtained at the bedside and used to confirm the accuracy of the PN solution composition.
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