Variation in MCV and its correlation with RDW-SD and RDW-CV values in dogs and cats

Abstract

The aim of the present study was to determine the correlation between RDW-SD (Red cell Distribution Width as Standard Deviation), RDW-CV (as Coefficient of Variation), macrocytosis and microcytosis in dogs and cats attended in the clinical routine of the University Veterinary Hospital of the Universidade Luterana do Brasil. For the investigation, dogs and cats with microcytosis and macrocytosis were divided and the groups were correlated with RDW-SD and RDW-CV values. Correlation analyzes were performed using the Spearman test, the Student test was used for the analysis of significance, in the IBM SPSS® Statistics program. In the statistical analysis of the group of dogs there was no correlation between microcytosis and RDW-SD, however, RDW-CV showed a reasonable inversely proportional correlation. In the canine macrocytic group, the correlation analysis with RDW-SD was moderate and directly proportional, and with RDW-CV it was moderate and directly proportional. In the feline group, there was no correlation between microcytosis and RDW-SD, and with RDW-CV there was a reasonable and inversely proportional correlation. Between macrocytosis in felines and RDW-SD there was a moderate and directly proportional correlation, while RDW-CV showed a reasonable and directly proportional correlation. Based on the analysis, it can be concluded that the canines and felines of the microcytic group present a reasonable correlation with the RDW-CV. However, canines with macrocytosis showed moderate correlation for both RDW-CV and RDW-SD, whereas cats showed a higher correlation with RDW-SD.