THEORETICAL ANALYSIS ON EFFICIENT MICROWAVE WARMING OF HUMAN BLOOD

Economical and efficient warming of pre-transfusion human blood has been a subject of extensive investigation. The objective of this study is to identify and analyze the effect of enhanced microwave warming of bank blood. The sample here has been assumed to be a 2D cylinder interacting with microwave irradiation. The mathematical interpretation for the study is performed by solving the equation of electromagnetic wave propagation along with the equation of energy balance and pertinent boundary conditions. The samples after being subjected to both lateral and radial irradiations of same intensity are investigated for the power absorption in the sample with respect to the sample size. The preliminary observations obtained are further analyzed and extended for spatial distribution scrutiny. The collaborative analysis of the spatial distributions of temperature and power in the human blood along with high heating rate and low thermal non-uniformity determine the optimal heating strategy. The observations at different sample sizes recommend radial irradiation as the optimal heating strategy for samples corresponding to OP: 1 and 3, and lateral irradiation for samples corresponding to OP: 2, respectively. Considering all the aspects, the present work recommends an efficient way for enhanced microwave assisted heating of body fluid samples (2D cylindrical geometry) with known or measurable dielectric properties.

The use of blood components in the University Clinic in Gdansk in 2006 – 2010

Introduction: The aim of this paper was to present the blood components management at the University Clinical Center in Gdansk in 2006-2010. The blood and its components in the University Clinical Center (UCK) are administered in the Transfusion Clinical Laboratory of the Central Clinical Laboratory.<br>Materials and Methods: Material was the data obtained from the LSI-Bank Blood Bank computer system. The database contained results of pre-transfusion studies of blood recipients and donations, and determined the number of issues of blood components (red blood cells, platelets and plasma) from the NHC in 2006-2010. <br>Results: In the years 2006-2010 the UCU was given blood components for 23 645 hospitalized patients, more than half – men. The most common group of patients undergoing transfusion were patients aged 50 to 79 (69%). 188 125 blood components were issued. Red blood cell concentrate was the most commonly prescribed blood component.<br>Conclusions: The increase in pre-transfusion and transfused blood components was attributed to an increased number of hospitalized patients and an increased number of surgical procedures.<br>The use of IT systems in the management of blood enables you to monitor the demand for blood components, maximize their utilization and, consequently, effectively manage the blood components in the hospital blood bank. The work, based on the largest database collected in Poland, is of an illustrative nature, in the future it will allow a detailed analysis of the use of blood components in particular hospital departments as well as comparison with other centers.