Journal
HEMATOLOGY-ONCOLOGY CLINICS OF NORTH AMERICA
Volume 19, Issue 5, Pages 827-+Publisher
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1016/j.hoc.2005.08.006
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Funding
- NHLBI NIH HHS [HL 48484, HL 15162, HL 070595] Funding Source: Medline
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Abnormal rheologic behavior of sickle cells is the result of increased viscosity of the blood caused by the polymerization of hemoglobin S (HbS) and the resultant production of dense, dehydrated sickle erythrocytes. As the viscosity of sickle cells increases, there is a negative impact on blood flow, which contributes to the vascular occlusion process, the hallmark of the sickling disorders. Blood flow is directly proportional to the blood pressure and inversely proportional to the blood viscosity. Blood flow has important implications for the diagnosis and management of hypertension in sickle cell patients and for transfusion therapy for the acute and chromic complications of this disease.
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