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A Medarde

Publications and source records attributed to A Medarde.

18 recordsLinked to original sources
PubMedDate not supplied

[Hepatitis C virus infection in different risk groups and among blood donors].

We have studied serological markers of viral hepatitis type A, B, delta and C in 7,713 blood-donors, 265 patients with a clinical diagnosis of hepatitis, 41 inmates of a mental and physical retardation institution and 41 health care workers at the same institution and 35 chronic hemodialysis patients. The results showed a 0.8% anti-HCV prevalence in blood-donors, but a higher percentage (47.5%) among HBV positive patients and in two different groups of the inmates at the mental institution (12.5% and 36%). We can not establish a relationship with the presence of anti-HCV and serological markers for HBV or H-delta V, neither with any serological markers pattern of B hepatitis nor with the anti-HCV levels and pathological findings in the biopsy of the cases in which this procedure was performed. The detection of anti-HCV has two direct applications: to exclude positive blood-donors in order to reduce the risk of post-transfusion hepatitis and to better establish a precise diagnosis in patients otherwise classified of having nonA-nonB hepatitis.

Adolescent↗
PubMedDate not supplied

[A retrospective study of HBsAG carriers in the blood bank of Navarra].

The following is a review of the data of hepatitis-B serology study obtained during the last sixteen years in the Blood Bank of Navarra. The prevalence of HBsAg carriers is 0.87% (204 positive cases in 23,409 blood donors studied). The methods used during this period have been: AGD (7 positive donors, i.e. 3.4%), CIEP (4 positive donors, i.e. 1.9%), HARP (78 positive donors, i.e. 38.2%), EIA (93 positive donors, i.e. 45.5%) and RIA (22 positive donors, i.e. 10.7%). The number of previous donations before the detection of HBsAg dropped from 7/8 in the first group of donors to 4/5 in the second and to 1 in the third group. A deeper study has been carried out in 120 of those blood donors, including the detection of anti-HBs, anti-HBc, HBeAg and anti-HBe. A low-infectivity pattern has been found in 92 (76.6%), high infectivity in 4 (3.3%) and seroconversion in 16 (13.3%). It hasn't been possible to interpret the pattern of the remaining 8 (6.6%). Both the sensitivity and the specificity of our actual screening method have been found adequate in a cooperative study carried out in a group of Blood Banks in Spain in 1985.

Blood Banks↗