[Pulmonary complications in sickle cell syndromes]

Area of Science:

• Pulmonary Medicine
• Hematology
• Pediatrics

Background:

• Sickle cell disease (SCD) is a genetic blood disorder associated with significant morbidity.
• Pulmonary complications represent a major cause of mortality and morbidity in SCD patients.

Purpose of the Study:

• To investigate the spectrum and incidence of pulmonary complications in a cohort of 88 sickle cell disease patients.
• To identify risk factors and common pathogens associated with pulmonary complications in SCD.
• To evaluate the role of prophylactic therapies and interventions for managing these complications.

Main Methods:

• Retrospective analysis of 88 patients with sickle cell disease (Hb SS, Hb Sb, Hb SC).
• Review of clinical data, including pulmonary complications, infections, and treatment strategies.
• Identification of bacterial pathogens in pulmonary infections.

Main Results:

• Pulmonary infections occurred in 20% of patients, initiating disease in 7%, predominantly in children under 10 with Hb SS and Hb Sb.
• Common bacterial pathogens identified included Streptococcus pneumoniae, Mycoplasma pneumoniae, and Haemophilus influenzae.
• Acute chest syndrome was observed in adolescents and adults, often resulting from pulmonary infarct or embolism, distinct from bacterial pneumonia. Restrictive syndrome affected 2/3 of patients, with 80% experiencing hypoxemia.

Conclusions:

• Pulmonary complications are frequent in sickle cell disease and require vigilant management.
• Prophylactic penicillin therapy and timely immunization against Pneumococci and Haemophilus influenzae are essential for long-term prevention.
• Blood exchange transfusion is indicated for managing severe hypoxemia.