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Biomedical subjects

A Manissadjian

Publications and source records attributed to A Manissadjian.

At least 19 recordsLinked to original sources
PubMed1992

[Neonatal bacterial meningitis: etiological agents in 109 cases during a 10 year period].

The etiology of purulent meningitis was investigated in 109 newborn infants admitted in a neonatal intensive care unit throughout a ten year period. Bacterial pathogens were isolated from the CSF in 57 (52.2%) neonates. There was a predominance of Gram-negative bacilli isolated in 38 (34.9%) neonates. Gram-positive cocci were isolated from CSF in only 12 (11.0%) neonates. Microorganisms associated with nosocomial septicemia and meningitis in neonates--Klebsiella sp, Salmonella sp. Enterobacter sp, Pseudomonas sp, Flavobacterium meningosepticum and Serratia marcescens--were responsible for presumptive etiology in 38 (49.3%) among 77 patients with positive cultures in "closed sites". They were isolated from 22 (57.0%) neonates with prior hospitalization but only from 12 (34.3%) neonates coming directly from their households (chi 2 = 4.08; p < 0.05). The mortality rate was significantly higher in patients with positive CSF cultures (47.4%) in comparison to patients with negative cultures (18.4%) (X2 = 5.01; p < 0.05). It is possible to conclude that Gram-negative bacilli, many of them of hospital origin, are the major pathogens in this study. An improvement on neonatal health care and a scrupulous control of neonatal nosocomial infections are recommended.

Culture Media↗
PubMed1991

Laboratory screening for the diagnosis of children with primary immunodeficiencies.

To select simple and low-cost laboratory tests that contribute to the diagnosis of primary immunodeficiencies (PID) in children, the medical records of 98 patients with PID were analyzed. White blood cell counts, serum IgG, IgM and IgA determinations, Shick test, isohemagglutinin titers, delayed cutaneous hypersensitivity tests, nitro blue tetrazolium test and hemolytic complement (CH50) determination associated with clinical data led to the diagnosis in 95% of cases. Applying this laboratory screening to patient series studies in other countries, the diagnosis was suggested in at least 92% of the cases. This screening proposal may be used as a guideline in the standardization of complementary tests for the diagnosis of immunodeficiencies in pediatric centers of developing countries and also at the primary medical care level in developed countries.

Clinical Laboratory Techniques↗
PubMed1990

[A serological inquiry for the detection of antibodies against human immunodeficiency virus (HIV) in children in a general ward].

The results of a serum inquiry for detection of antibodies against the Human Immuno-deficiency Virus in a non selected group of children, patients of a general pediatric ward, are reported. Of the 441 cases, the ELISA test gave a positive result for 1.1% of them. This result was confirmed by the Western-Blot or ImmunoBlot test. None of the five children who tested positive had a previous history of blood transfusion. These children's mothers showed positive results to the ELISA test. Of four cases, at least one of the parents was IV drug addicted. In every case the transmission was vertical. On the basis of these findings, it is suggested that hospital staff should take the necessary precautions when manipulating blood and secretions and it is recommended that serum inquiries be made on the wards of general hospitals in the attempt to establish reliable data on the prevalence of HIV.

AIDS Serodiagnosis↗