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It is a form of sickle cell crisis. Sickle cell anemia – most common in those of African, Hispanic, and Mediterranean origin – leads to sickle cell crisis when the circulation of blood vessels is obstructed by sickled red blood cells, causing ischemic injuries.
Pulmonology. The acute chest syndrome is a vaso-occlusive crisis of the pulmonary vasculature commonly seen in people with sickle cell anemia. This condition commonly manifests with a new opacification of the lung (s) on a chest x-ray. [1]
Vaso-occlusive crisis. The vaso-occlusive crisis is caused by sickle-shaped red blood cells that obstruct capillaries and restrict blood flow to an organ, resulting in ischaemia, pain, necrosis, and often organ damage. The frequency, severity, and duration of these crises vary considerably.
A vaso-occlusive crisis occurs when sickled red blood cells block blood flow to the point that tissues become deprived of oxygen and causes pain.
Individuals who have HbAS have about 40%HbS, 56% HBA, and are usually asymptomatic unless there is a severe lack of oxygen to the body (hypoxia) which can lead to symptoms of sickle cell disease. However, HbAS does not cause vaso-occlusive crisis, which is known to be associated with sickle cell disease.
A sickle cell health crisis can escalate into life-threatening complications, but patients still struggle to get seen quickly in emergency rooms and also to get pain medicine.
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