[Vitamin B12 levels in the serum in gastrectomized patients].
In 17 totally gastrectomised patients the vitamin B12-serum level was analyzed by 57Co-marked vitamin B12 according to the principle of competitive protein-bounding. Pathological low B12-serum levels in 10 patients refer to the lack of this vitamin. This, however, was only clinically manifested in one case by a megalocytic anaemia. The control of B12-serum levels by running substitution is only useful at the end of the interval between two injections. It is only at this time that it is a help in evaluating the effect of substitution. The monthly or 2-monthly vitamin B12-substitution should be preferred. No optimal substitutional effect can be achieved by injecting 1000 micrograms of vitamin B12 every three months.
D005743:Gastrectomy / Q000009:adverse effects*; D006801:Humans; D008286:Malabsorption Syndromes / Q000097:blood / Q000209:etiology; D014805:Vitamin B 12 / Q000008:administration & dosage / Q000097:blood; D014806:Vitamin B 12 Deficiency / Q000097:blood / Q000209:etiology*
D014805:Vitamin B 12
Vitamin B12-Spiegel im Serum bei Gastrektomierten.