Publications by authors named "Alpha Bah"

Background: A record number of people survived Ebola virus infection in the 2013-16 outbreak in west Africa, and the number of survivors has increased after subsequent outbreaks. A range of post-Ebola sequelae have been reported in survivors, but little is known about subsequent mortality. We aimed to investigate subsequent mortality among people discharged from Ebola treatment units.

View Article and Find Full Text PDF

A wide bandwidth, ultra-thin, metasurface is reported that facilitates wide angle beam scanning. Each unit cell of the metasurface contains a multi-resonant, strongly-coupled unequal arm Jerusalem cross element. This element consists of two bent-arm, orthogonal, capacitively loaded strips.

View Article and Find Full Text PDF

Background: Chronic kidney disease (CKD) is increasing worldwide and can lead to end-stage renal disease (ESRD).

Objectives: Because few patients with ESRD in the Republic of Guinea have access to haemodialysis, we retrospectively evaluated the prevalence of CKD, ESRD and access to supportive therapies.

Patients And Methods: 579 CKD patients (304 males; mean age: 44 ± 16 years) were admitted into Conakry nephrology department, the only centre in the Republic of Guinea, between 2009 and 2013.

View Article and Find Full Text PDF

Spontaneous extradural hematoma is rare in patients with sickle cell disease. We report a clinical case of a 19-year-old young man with sickle cell anemia who presented a sickle cell crisis complicated by the development of multiple acute extradural and subgaleal hematomas that had not been treated surgically. We discuss the physiopathology of this event.

View Article and Find Full Text PDF

This questionnaire-based study included 69 patients from the Republic of Guinea with end-stage renal disease (ESRD) and was conducted over 12 months. The factors that affected their quality of life (QoL) were determined. The included ESRD patients had an estimated creatinine clearance (CCr) of <15 mL/minute using MDRD formula.

View Article and Find Full Text PDF

Background: As new treatment modalities develop for the management of vestibular schwannomas (VS) in patients with neurofibromatosis type 2, it remains crucial to ascertain the natural history of the disease.

Objective: To determine the relationship between hearing and tumor growth in patients undergoing conservative VS management.

Methods: Patients harboring bilateral VS with at least 1 year of radiological follow-up were selected.

View Article and Find Full Text PDF

Neurofibromatosis type 2 (NF2) is rare genetic disorder characterized by the development of multiple benign tumors of the nervous system. The majority of people with NF2 are diagnosed in the second or third decade of life with bilateral vestibular schwannomas. Among NF2 patients followed up in our NF2 clinic, seven patients have been diagnosed with NF2 after the age of 70 years.

View Article and Find Full Text PDF

The objective of this study was to describe the histological features of the nephrotic syndrome in adults, at the Donka National Hospital of the University Hospital of Conakry. This was a prospective study ranging from March 1 2003 to March 30th 2004, including all patients older than 15 years of age hospitalized for nephrotic syndrome. Twenty patients were selected for the study; 12 men and 8 women, with a sex ratio of 1.

View Article and Find Full Text PDF

A transversal prospective study of 69 patients with terminal stage renal disease covering a 12 month period - 1 January to 31 December 2010 - was conducted; the objective was to determine factors affecting their quality of life. This is a questionnaire study covering a 12 month period. The study group were patients with ESRD whose clearance of creatinin were less than 15ml/min.

View Article and Find Full Text PDF

Decision-making criteria for optimal management of meningiomas in neurofibromatosis type 2 (NF2) patients is hampered by lack of robust data, particularly long-term natural history. Seventy-four NF2 patients harboring 287 cranial meningiomas followed up for a mean period of 110.2 months were studied retrospectively.

View Article and Find Full Text PDF

Choroid plexus papillomas (CPP) are rare tumors of the central nervous system, usually occurring in the ventricular system. Apart from spinal drop metastases, CPPs are generally unique tumors. In this report, the authors present two exceptional adult cases involving multiple benign CPPs located in both intra- and extraventricular locations.

View Article and Find Full Text PDF

A differential analysis framework of longitudinal FLAIR MRI volumes is proposed, based on non-linear gray value mapping, to quantify low-grade glioma growth. First, MRI volumes were mapped to a common range of gray levels via a midway-based histogram mapping. This mapping enabled direct comparison of MRI data and computation of difference maps.

View Article and Find Full Text PDF

Acute febrile illnesses comprise the majority of the human disease burden in sub-Saharan Africa. We hypothesized that arboviruses comprised a considerable proportion of undiagnosed febrile illnesses in Guinea and sought to determine the frequency of arboviral disease in two hospitals there. Using a standard case definition, 47 suspected cases were detected in approximately 4 months.

View Article and Find Full Text PDF

Rodent-borne and other communicable diseases are of particular concern to vulnerable populations in complex humanitarian emergencies. We assessed the risk of Lassa fever to refugees and humanitarian aid workers in the Forest Region of Guinea by trapping rodents and testing them for the presence of Lassa virus infection. Our study provides a point prevalence of Lassa virus-infected rodents in various refugee camps in Guinea, suggesting that the risk of disease may be highest in camps further south toward the border with Liberia.

View Article and Find Full Text PDF