RT Book, Section A1 Chambliss, Linda R. A2 Foley, Michael R. A2 Strong, Jr., Thomas H. A2 Garite, Thomas J. SR Print(0) ID 1115792134 T1 The Management of a Sickle Cell Crisis in Pregnancy T2 Obstetric Intensive Care Manual, 4e YR 2015 FD 2015 PB McGraw-Hill Education PP New York, NY SN 9780071820134 LK obgyn.mhmedical.com/content.aspx?aid=1115792134 RD 2024/04/19 AB Hemoglobinopathies are inherited disorders that result in abnormal hemoglobins. Broadly speaking, the disorders can be classified as disorders of the quantity of hemoglobin such as thalassemia or structural disorders such as sickle cell anemia. Hemoglobinopathies are relatively common and affect 5% to 7% of the world’s population. Sickle cell trait occurs in 8% of African Americans while sickle cell anemia occurs in one of every 600 African Americans. It is estimated that 30 million people worldwide carry at least one copy of the gene for hemoglobin S. Approximately, 1500 children with sickle cell anemia are born annually in the United States.