Radiation exposure during CT procedures in Tanzania.

The aim of this study was to evaluate optimisation status during common computed tomography (CT) procedures by determining values of volume computed tomography dose index (CTDIvol) and dose-length product (DLP) per examination. Patient and exposure data were collected from the CT console during various CT procedures. The results show that variations in CTDIvol and DLP values were mainly because of differences in the techniques used. The 75th percentile values were set as the third quartile of the median CTDIvol or DLP values for all hospitals. These values of 40.9, 9.0, 9.4 and 16.2 mGy for CTDIvol were determined for head, high-resolution chest, abdomen-pelvis and lumbar spine, respectively. The corresponding DLP values for the same sequence of CT procedures were 900, 360, 487 and 721 mGy.cm, respectively. The updated results provide a basis for optimising the procedures of CT in this country.

SARS-CoV-2 precipitating a stroke in a child? A case report from Tanzania.

There is scanty data on overall pediatric presentations with COVID-19 in sub-Saharan Africa and none reported related to stroke. Management of acute stroke in children has been challenging due to delays in presentation and difficulties in deducing the exact etiology. This is the first such case of a stroke in a child with COVID-19 infection reported in Tanzania to the best of our knowledge. A six-and-a-half-year-old male child of Asian origin with no history of chronic illness presented to our facility with fever, rash, gastrointestinal symptoms and conjunctivitis. Subsequently, he developed headache, irritability, altered mentation, loss of speech, facial nerve palsy and hemiparesis. He was provisionally diagnosed with bacterial meningitis with a differential diagnosis of viral encephalitis and received standard treatment for the same. On further investigations, magnetic resonance imaging (MRI) of the brain showed ischemic infarct along the territory of left middle cerebral artery and given the history of the child´s exposure to a relative with COVID-19 infection, child underwent a nasopharyngeal swab for polymerase chain reaction testing which was negative but the serum IgG for COVID was positive. Despite the severe presentation initially, early detection and appropriate management resulted in survival, regained speech and motor function. Due to constraints in health care systems in sub-Saharan Africa, it is difficult to exhaust the diagnostics in order to narrow down the list of differentials in a child with stroke. This case is reported to further describe the diverse presentations of COVID-19 particularly in children which has been under-represented especially in sub-Saharan Africa. Attending physicians should have a high index of suspicion for SARS-CoV-2 as the etiology for exposed children presenting with neurological symptoms.