Timed Average Mean Maximum Velocity (TAMMV) of Cerebral Blood Flow of Children and Adolescents with Sickle cell Disease: correlation with clinical and hematological profiles in country
| Autor: | BF Chukwu, Lyra Menezes, Marilda Souza Goncalves, Thiago Gonçalves Fukuda, Jamary Oliveira Filho |
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| Rok vydání: | 2022 |
| Předmět: |
medicine.medical_specialty
Adolescent Ultrasonography Doppler Transcranial Disease Anemia Sickle Cell Correlation Internal medicine medicine Humans Bone pain Child Oxygen saturation (medicine) medicine.diagnostic_test business.industry sickle cell disease TAMMV Transcranial Doppler children adolescents Salvador General Medicine medicine.disease Acute chest syndrome Transcranial Doppler Stroke Pulse oximetry Cerebral blood flow Hematocrit Cerebrovascular Circulation Child Preschool Cardiology medicine.symptom business |
| Zdroj: | Malawi Medical Journal; Vol. 33 No. 3 (2021); 169-177 |
| ISSN: | 1995-7270 1995-7262 |
| Popis: | BackgroundDetection of abnormal TAMMV with transcranial Doppler is fundamental in primary stroke prevention in children with sickle cell disease (SCD). The study aimed at evaluating TAMMV and correlating it with clinical and hematological profiles of children and adolescent with SCD. MethodsTranscranial Doppler was performed on subjects aged 2-16 years, using a 2 MHz probe placed over the transtemporal windows. Pulse oximetry was used to determine the peripheral oxygen saturation while clinical and hematological profiles were retrieved from their medical records.Results One hundred and thirty five patients were recruited. The mean TAMMV was 125cm/s. Patients with HbSS had a significantly higher TAMMV (131cm/s) than those with HbSC (107cm/s). Only one (0.74%) patient had abnormal TAMMV. TAMMV correlated inversely with oxygen saturation, Hct and patient’s age, and positively with white cell and platelet counts. Previous history of acute chest syndrome (ACS) and recurrent painful crises increased the risk of development of abnormal and conditional velocity.Conclusion Frequency of abnormal TAMMV in this study was low. Younger children and those with HbSS had higher TAMMV. Age, oxygen saturation and haematocrit correlated negatively while white cell and platelet counts correlated positively with TAMMV. Previous history of ACS and recurrent bone pain were associated with increased risk of having abnormal and conditional TAMMV. |
| Databáze: | OpenAIRE |
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