The blood remaining in the patient is diluted. Later, his blood in the external circuit is directed back into him, thus bringing his blood count closer to normal.
فيحوَّل مسار الدم الى دورة دموية خارج الجسم ،‏ ويُخفَّف الدم الباقي في جسم المريض بإضافة سائل اليه .‏