[Blood levels of Fe, Zn, Br and Rb determined by radionuclide x-ray fluorescence analysis in patients with dilated cardiomyopathy]. / Sledovanie koncentrácií Fe, Zn, Br a Rb v krvi pacientov s diagnózou dilatacná kardiomyopatia metódou rádionuklidovej röntgenofluorescencnej analýzy.

In 68 patients (50 men between the age of 18-59, 18 women between the age of 20-53) inflicted by dilatation cardiomyopathy in the stage of severe decompensation (functional NYHA group III-IV, the concentrations of Fe, Zn, Br, and Rb in whole blood were determined by means of radionuclide X-ray-fluorescence analysis. The Fe concentration (X = 401.26 +/- 14.58) was significantly lower (alpha = 0.074), the Zn concentration (X = 8.20 +/- 0.95) was not significantly altered, the trace elements concentration Br (X = 32.30 +/- 4.61) and Rb (X = 4.58 +/- 0.38) were remarkably and significantly higher (alpha = 2.10(-16), resp. alpha < or = 1.10(-16)) when compared with concentrations of these elements in healthy controls. The method of radionuclide X-ray-fluorescence analysis is suitable for element analysis of blood. Its advantages reside in its rapidness, polycomponence, sample nondestructiveness and low requirement of material. (Tab. 3, Fig. 4, Ref. 17.)