BACKGROUND: Partial or subtotal spleen resection or spleen
autotransplantation can partly preserve/restore the splenic filtration function, as
previous studies demonstrated.
OBJECTIVE: For better evaluation and follow-up of the various
spleen-preserving operative techniques’ effectiveness versus splenectomy, a composite
methodological approach was applied in a canine experimental model.
METHODS: Beagle dogs were subjected to control (n = 6),
splenectomy (SE, n = 4), partial and subtotal spleen resection
(n = 4/each) or spleen autotransplantation groups (AU, Furka’s
spleen-chip method, n = 8). The follow-up period was 18 postoperative
(p.o.) months. Erythrocyte deformability was determined in parallel by bulk filtrometry
(Carat FT-1 filtrometer), slit-flow ektacytometry (RheoScan D-200) and rotational
ektacytometry (LoRRca MaxSis Osmoscan).
RESULTS: By filtrometry, relative cell transit time increased in the SE
group (mostly in animal Nr. SE-3), showing the highest values on the 3rd, 9th and in 18th
p.o. months. Elongation index values decreased in this group (both by slit-flow and
rotational ektacytometers). In general, AU and two resection groups’ values were lower
versus control and higher than in SE.
CONCLUSIONS: Forasmuch in the circulation both elongation by shear stress
and filtration occur, these various erythrocyte deformability testing methods together may
describe better the alterations. Considering the possible complications related to
functional asplenic-hyposplenic conditions, individual analysis of cases is highly
important.