<prompt> Aplastic crisis in sickle cell anemia as compared to haemolytic crisis leads toIncreased blood volumeTotal leucocyte count decreasedDecrease in reticulocytesSame findings  <response>: Aplastic crisis is an acute event caused by sudden decrease in red cell production. This is usually triggered by infection of erythroblasts by parvovirus B-19.Hemolytic crisis is associated with hyperbilirubinemia and compensatory reticulocytosis. 