Homozygous Sickle Cell Disease after Age of 40: Follow-Up of a Cohort of 209 Patients in Senegal, West Africa

Table 2

Morbidity related to SCD: frequency of VOCs, history of hospitalization, and transfusion practice.

Parameters	Number (n = 209)	Frequency (%)
Frequency of VOCs
<3 VOCs/year	194	92.83
3–5 VOCs/year	07	3.35
>5 VOCs/year	08	3.82
Patients transfused	138	66.00
Blood transfusion procedures
Single transfusion	121	57.80
Exchange transfusion	27	12.90
Indications for transfusion (n = 164)
Acute anemia	83	50.60
Prolonged VOCs	22	13.41
Acute chest syndrome	21	12.80
Pregnancy	13	7.93
Preparation for surgery	11	6.72
Acute priapism	06	3.66
Leg ulcers	08	4.88