نقش حجم متوسط پلاكتي در تشخيص اختلالات شايع پلاكتي

The Role of Mean Platelet Volume in Diagnosis of Common Platelet Disorders

Background and Objectives: Mean platelet volume (MPV) is considered as a parameter in differential diagnosis of common platelet disorders which is related to platelet production. This study was done to evaluate MPV changes in common disorders of platelet such as leukemia,l"I P and aplastic anemia. Materials and Methods: One hundred patients admitted with platelet disorders at Tabriz Pediatric Medical Center were Compared with 20 patients without hematological problem. The factors studied included platelet, WBC,Hgb and MPV which were done by Hl Coulter. Sixty six cases studied had leukemia, 27 patient had 1TP and 7 out of them had aplastic anemia. Tlie final diagnosis was done by BMA. Results:ln patients having leukemia with average platelet count of 54154/mmʹ and MPV of 7.29 + 1.19 there was not meaningful relationship between disease and MPV (p>O.067). Patients with 1TP had average platelet count of 223591mmʹ and MPV of 10.40 ± 1.280 which did not show a meaningful relationship between disease and MPV (p>0.05), but in patients with aplastic anemia average platelet count 25142/mm3 and MPV 4.48 f 0.91 showed a meaningful relationship between aplastic anemia and MPV (p<0.001). Conclusion: Although MPV is an indicator of platelet production and it decreases in hone marrow failure and increases in bone marrow production activity ,this study shows that MPV is only helpful in diagnosis of aplastic anemia and has no diagnostic value in leukemia or ITP.