Hemorrhagic and thrombotic complications in patients with myeloproliferative diseases

OBJECTIVE: To correlate the incidence of hemorrhage and thrombosis to bleeding time (BT) and platelet aggregation in 27 consecutive patients with myeloproliferative diseases (MPD). DESIGN: Retrospective study. SETTING: Public tertiary referral center. PATIENTS: Eighteen patients with chronic myelogenous leukemia (CML), 5 with polycytemia vera (PV), 2 with essential thrombocytemia (ET) and 2 with idiopathic myelofibrosis (MF). Duke's BT and epinephrine-induced platelet aggregation were performed on the patients and on 10 healthy individuals. RESULTS: Eleven patients presented symptoms (41 %): 9 with hemorrhage (33%) and 5 with thrombosis (19%).There were less symptomatic patients in the CML group (28%) than in the other MPD (67%), without statistical significance (Fisher, p=0.06). Duke's BT was longer in symptomatic patients (Mann-Whitney, p<0.05). Platelet aggregation was abnormal in 7 patients (26%) and 71% of them were symptomatic (Fisher, p = 0.07). CONCLUSIONS: The high incidence of bleeding and thrombosis in patients with MPD was related to prolonged BT, but not to platelet aggregation abnormalities.

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Bibliographic Details
Main Authors: Vignal,Carla Valladares, Lourenço,Dayse Maria, Noguti,Maria Aparecida Eiko, Chauffaille,Maria de Lourdes Ferrari, Kerbauy,José
Format: Digital revista
Language:English
Published: Associação Paulista de Medicina - APM 1997
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-31801997000600004
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