Motion Sickness , Ginger , and Psychophysics

(1490-2510 ng/dl) the marrow iron score was only 2 + (nondialysis control value). 1-3 In previous studies of serum ferritin and marrow iron, no attempt was made to investigate iron overload in the liver and spleen. In the absence ofhepatosplenic siderosis the marrowiron stores can be expected to represent total-body iron stores, and iron-depleted marrow can be regarded as evidence of iron deficiency. This is not true of dialysis haemosiderosis, where there may be a paradox of hepatosplenic iron overload and marrow iron depletion. In this setting, high serum ferritin levels are caused by hepatosplenic siderosis and may not be relied upon as indicators of marrow iron reserves. All our patients except those in the control group were given relatively large doses of iron dextran, whereas none of the patients in the study of Bell et al. received parenteral iron. Another possible cause of the different results in our study and that of Bell et awl. is that the tissue obtained by needle biopsy of bone is usually scanty and crushed and does