Howeer, urgent blood replacement may be required for sudden and seere aplastic crises, usually obsered in the setting of seere infection in children with blood sequestered in an enlarged spleen (1).

• 然而，紧急血液置换常被用于突发的严重再生障碍性危象，常发生在脾肿大的患儿出现严重感染时，这些患儿的血液聚集在肿大的脾脏内[1]。