Abstract:To examine whether treatment with cardiopulmonary bypass (CPB), which causes transient cellular immunity depression, influences tuberculin skin testing (TST) interpretation. The study was also aimed to assess the degree of cellular immunity depression following open heart surgery. Fifteen children from developing countries with latent tuberculosis (TST >or=10 mm), undergoing open heart surgery had their TST repeated within 48-72 h following surgery. We compared the size of skin test induration before and after… Show more
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