Blaß, Sandra: Nutritional Status of Trauma Patients with Disorders in Wound Healing : Assessment and Effects of Nutrient Supplementation. - Bonn, 2012. - Dissertation, Rheinische Friedrich-Wilhelms-Universität Bonn.
Online-Ausgabe in bonndoc: https://nbn-resolving.org/urn:nbn:de:hbz:5n-30352
@phdthesis{handle:20.500.11811/5138,
urn: https://nbn-resolving.org/urn:nbn:de:hbz:5n-30352,
author = {{Sandra Blaß}},
title = {Nutritional Status of Trauma Patients with Disorders in Wound Healing : Assessment and Effects of Nutrient Supplementation},
school = {Rheinische Friedrich-Wilhelms-Universität Bonn},
year = 2012,
month = oct,

note = {Disorders in wound healing (DWH) are severe post-surgical complications in trauma patients, unfortunately, the reasons being not completely understood. However, nutrition is hypothesised as an important factor for proper wound healing as micronutrients are directly involved in the healing process. The hypothesis of this thesis is that an inadequate status of antioxidant micronutrients may favour DWH. Reliable data on causal relationships, however, are lacking.
Within a cross-sectional study (CHAPTER ONE) the plasma/serum status of vitamins A, C, D, E, and β-carotene, albumin, prealbumin were determined in 44 trauma patients with DWH (wound not closed or persisting secretion within 10 days post surgery or trauma) and in 45 trauma patients with regular wound healing (RWH). Moreover, malondialdehyde (MDA), peroxides, trolox equivalent antioxidant capacity (TEAC) as well as C-reactive protein (CRP) were assessed. Interestingly, Vitamin C, vitamin E/cholesterol-ratio, beta-carotene, prealbumin, TEAC and peroxides were higher in patients with DWH than in patients with RWH. Most patients showed deficiencies in vitamin C, vitamin D, and β carotene without differences between DWH and RWH. Only four patients with DWH and only one person with RWH had CRP concentrations within the reference range. Obviously, low values of several micronutrients are common in trauma patients with and without DWH and may be triggered by inflammation.
In a placebo-controlled randomized trial (CHAPTER TWO), 20 trauma patients with DWH were recruited. The verum group (V) received an oral nutritional supplement (Glutamine Plus, Fresenius Kabi, Bad Homburg, Germany) for 14 days providing 500 mg/d ascorbic acid, 166 mg/d α tocopherol, 3.2 mg/d β-carotene, 100 µg/d selenium, 6.6 mg/d zinc and 20 g/d glutamine; the placebo group (P) received isoenergetic amounts of maltodextrine instead. Before (d0) and after (d14) supplementation, plasma/serum levels of the ingested micronutrients, CRP and vascular endothelial growth factor-A (VEGF-A) were analysed and the microcirculation of the wound was measured. The time to wound closing was recorded. At d0, the plasma status of micro-nutrients was comparable between the groups. No changes were observed in V and P, except for selenium which increased in V. Prevalence for hypovitaminosis did not change in any group. Glutamine decreased only in P. VEGF-A did not change in any group whereas CRP decreased in P. The O2-saturation was lower in V than in P at d0. Except for the decrease in O2-saturation in P, the microcirculation did not change. The time to wound closing (no secretion/ inflammation/infection) was shorter in V than in P. The supplementation of antioxidant micronutrients and glutamine accelerates wound closing in trauma patients with DWH. Thus, the supplementation of antioxidative micronutrients and glutamine seems to be an effective dietary tool to improve wound healing.
In conclusion, the results of the cross-sectional and interventional study do not show associations between the micronutrient concentrations in plasma/serum, parameters of oxidative stress and the wound healing of trauma patients with DWH. However, marker of the nutritional status in plasma/serum have to be evaluated cautiously due to post-traumatic inflammation which lowers micronutrient concentrations directly or indirectly by reduced availability of transporter proteins. Since the supplementation of micronutrients and glutamine accelerated WH, tailored nutritional measures contribute effectively to wound treatment and, thus, should be implemented in daily clinical routine.},

url = {https://hdl.handle.net/20.500.11811/5138}
}

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