Platelet Delta granules storage pool defi ciency in female patient with severe hemorrhagic syndrome

Abstract

Introduction. Platelet dense granule disorders are a group of rare heterogeneous disorders of the blood coagulation system in which bleeding occurs due to functional and morphological disorders of platelet organelles accumulating phosphates and bioactive amines. Aim — to present a clinical case of a 37-year-old patient with severe hemorrhagic syndrome. Basic information. An observation of the occurrence of hemorrhagic manifestations of unspecified genesis in a patient is described. The results of 25 healthy volunteer examinations of both sexes were used as a control for testing methods of diagnosis of Platelet dense granule disorder. Methods of assessing the hemostasis system, platelet morphological features using electron microscopy, as well as platelet accumulation of mepacrine using a flow cytometer were studied. Platelet dense granule disorder was detected by electron microscopy and confirmed by flow cytometry in a patient with severe hemorrhagic manifestations, in whom the diagnosis was not verified for a prolonged period of time.