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Title: Estudo comparativo entre o xenodiagnóstico artificial realizado imediatamente e quatro horas após a coleta de sangue
Comparative study between artificial xenodiagnosis performed immediately and four hours after venous punch
Authors: Castro, Cleudson
Santos, Martinho Candido A.
Silveira, Celeste Aida
Assunto:: Xenodiagnóstico artificial
Diagnóstico parasitológico
Doença de Chagas
Artificial xenodiagnosis
Parasitological diagnosis
Issue Date: 2004
Publisher: Sociedade Brasileira de Medicina Tropical - SBMT
Citation: Rev. Soc. Bras. Med. Trop.,v.37,n.2,p.128-130,2004
Abstract: Foi realizado xenodiagnóstico artificial, imediatamente e quatro horas após a coleta do sangue, em 63 pacientes, sendo 29 (46%) do sexo masculino e 34 (54%) do sexo feminino. A idade mínima foi 18 anos e a máxima 68, sendo a idade média 39 anos. Onze (17,5%) pacientes apresentaram resultados positivos, sendo 8 (12,7%) no exame imediato e 7 (11,1%) no exame 4 horas após. Os oito pacientes do exame imediato apresentaram 17 pools positivos e os sete do xenodiagnóstico de quatro horas mostraram 11 pools positivos (p =0,34). Quatro pacientes foram positivos exclusivamente no xenodiagnóstico imediato, três somente no exame de 4 horas e quatro positivos em ambos. Os dados autorizam realizar o xenodiagnóstico, até quatro horas após a extração do sangue, sem prejuízo no resultado do exame.
Artificial xenodiagnosis was performed immediately after blood venous punch and then four hours later on 63 patients; 29 (46%) were male and 34 (54%) female, mean age 39 years (range 18 to 68 years). Eleven (17.5%) patients presented positive exams, of which eight (12.7%) were from immediate xenodiagnosis and 7 (11.1%) xenodiagnosis fours hours after. Eight patients showed 17 positive pools from immediate xenodiagnosis and 7 patients with xenodiagnosis four hours later showed 11 positive pools (p = 0.34). Four patients were positive only on immediate xenodiagnosis, three only on xenodiagnosis 4 hours after and four were positive in both. The data demonstrate that xenodiagnosis can be performed up to four hours after blood collection without impairing the test results.
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