{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,8]],"date-time":"2026-07-08T00:57:35Z","timestamp":1783472255182,"version":"3.55.0"},"reference-count":25,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[1988,3,1]],"date-time":"1988-03-01T00:00:00Z","timestamp":573177600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Parenter Enteral Nutr"],"published-print":{"date-parts":[[1988,3]]},"abstract":"<jats:p>Vitamins are essential in total parenteral nutrition (TPN), their importance being highlighted by repeated past documentation of various vitamin deficiencies particularly in patients on long\u2010term parenteral nutrition therapy. This study evaluated the efficacy of water\u2010 (Soluvit) and fat\u2010soluble (Vitalipid) vitamin supplementation in patients receiving total parenteral nutrition using the three in one 3\u2010liter bag system. All patients received water\u2010soluble vitamin supplements daily. Fat\u2010soluble vitamin supplements were administered on a daily or twice weekly basis. Twenty\u2010two patients were studied. In seven of the 22 patients vitamin status was assessed on more than one occasion during TPN support, thus bringing the total number of observations to 30. The mean duration of TPN support was 35 days. Eight of the observations were made during less than 10 days, three between 11\u201319 days, 15 between 20\u201360 days, and four during more than 60 days of TPN support. Biochemical deficiency as judged by subnormal enzyme activity or vitamin levels were present in 10% of the patients for thiamin, 3% for riboflavin, and 6% for nicotinic acid. By contrast 83% of the patients had low plasma vitamin C and B6 levels. Low plasma vitamin A and E levels were also present in 43 and 40% of the patients, respectively. According to the plasma concentrations of the vitamins studied it would appear that the commercial vitamin preparations used in this study are inadequate in maintaining optimal vitamin status. Our results indicate that on the basis of the low plasma concentrations found, vitamin deficiencies can occur in patients when commercial preparations are used that do not comply with the current guidelines of maintenance requirements. We further recommend that vitamin status assessment, when possible, is incorporated in the overall patient management. (<jats:italic>Journal of Parenteral and Enteral Nutrition<\/jats:italic> <jats:bold>12<\/jats:bold>:205\u2013211, 1988)<\/jats:p>","DOI":"10.1177\/0148607188012002205","type":"journal-article","created":{"date-parts":[[2008,5,14]],"date-time":"2008-05-14T19:51:26Z","timestamp":1210794686000},"page":"205-211","source":"Crossref","is-referenced-by-count":23,"title":["Plasma Vitamin Levels in Patients on Prolonged Total Parenteral Nutrition"],"prefix":"10.1002","volume":"12","author":[{"given":"Demetre","family":"Labadarios","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stephen J.D.","family":"O'Keefe","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joy","family":"Dicker","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liza","family":"Van Stuijvenberg","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lizaan","family":"Visser","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria E.J.","family":"Louw","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gordon S.","family":"Shephard","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[1988,3]]},"reference":[{"key":"e_1_2_1_2_1","first-page":"40933","volume-title":"Parenteral multivitamin products. 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