In Sickle cell disease children, sleep respiratory abnormalities are risk factors for vaso-occlusive complications, as well as cerebral vasculopathy. A 18 months follow-up children with sickle cell disease evaluating sleep respiratory problems frequency and etiology, as well as their influence on sickle cell disease complications.
* Inclusion visit with physical examination. A 2.9 ml blood sample will be necessary, if not done within the framework of care within 6 months for: CBC (Cell Blood Count), reticulocytes counts (1.2 ml of blood), liver enzymes, electrolytes, urea, creatininemia (1,2 ml of blood) and fetal hemoglobin (0.5 ml of blood). - A complete standardized examination including nasopharynx endoscopy, if not yet done in usual care, to identified upper airway obstruction * A standardized pneumology evaluation to identified obstructive lung symptomatology * An ambulatory polysomnography will be performed within days following inclusion, during sleep and will allow electroencephalogram recording, oculomotricity, muscles (mentalis muscles and tibialis anterior) movements, electrocardiogram and respiratory activity recording. The steering committee will classify the children in three populations based on their exam results: * Group 1: no abnormality in polysomnography * Group 2: obstructive sleep-related disorder * Group 3: isolated sleep hypoxemia for group3, patients will have a new ambulatory polysomnography.
Study Type
OBSERVATIONAL
Enrollment
62
Assistance Publique - Hôpitaux de Paris
Paris, France
Vaso-occlusive and cerebral complications frequency
Vaso-occlusive complications frequency and abnormal transcranial doppler (TCD) during the 18 months of follow up (cohort study) 3 subpopulations will be identified upon polysomnographic results: * Group 1: normal polysomnography * Group 2: sleep abnormalities related to obstructive upper airway disease or bronchial disease * Group 3: sleep abnormalities associated with non-obstructive pattern and isolated hypoxemia identified. The therapeutic trial will be done on this group.
Time frame: 18 months
Respiratory sleep abnormalities frequency
Respiratory sleep abnormalities frequency in a population of young sickle cell disease children.
Time frame: 18 months
Relationship between sleep abnormalities and transcranial doppler abnormalities
Analyze the relationship between sleep respiratory and non-respiratory abnormalities and transcranial doppler abnormalities
Time frame: 2 months
Polysomnography relevance compared to sleep ventilatory polygraphy
Polysomnography relevance compared to sleep ventilatory polygraphy in diagnosis of sleep abnormalities
Time frame: 2 months
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