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Administration of semi-solid nutrients via percutaneous endoscopic gastrostomy (PEG) has been wide spread in recent years. Various methods for semi-solid nutrients such as using agar powder or thickening agents had been proposed. Because semi-solid nutrients have greater viscosity to a certain extent compared with liquid nutrients, increased viscosity often results in adhesion of nutrients to the lumen of feeding tube after infusion. We measured the difference in the degree of adhesion to the lumen after the infusion of semi-solid nutrients using two types of solidifying agents. Compared with nutrients solidified by thickening agent, there were fewer remaining nutrients adhered to the lumen when the same nutrients were solidified by agar powder. The results suggested the advantage of using agar powder to solidify nutrients in terms of reducing the risk of intra-catheter infection in PEG feeding.

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[Purpose] Nutritional status and the achievement rate of energy requirements (rate at which there is adequate caloric intake to maintain basal energy demands) in elderly patients were evaluated for 7 days following orthopedic surgery via Nutrition Support Teams (NST) that offer nutritional services.
[Methods] A retrospective analysis on elderly patients (>70 yo) who underwent orthopedic surgery under general anesthesia were evaluated for nutritional status.
[Results] 102 patients (36 men and 66 women, age 78±5 [mean ± SD] years, height 153±10 cm, and weight 53±11 kg) from 6 institutions participated in the study. Total energy intake was calculated at 1,012±602 kcal on postoperative day (POD) 1, 1,280±491 kcal on POD 3, 1,404±431 kcal on POD 5, and 1,407±420 kcal on POD 7.42% of the patients required intravenous nutritional supplementation on POD 1 and 2 in addition to oral intake. Achievement rates of adequate intake to maintain basal energy requirements was 40% by POD 5. Total energy intake varied widely among the institutions, with up to two-fold differences.
[Conclusion] Following orthopedic surgery, caloric intake gradually increased up to an achievement rate of 40% at POD 5.

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