Home » Volumes » Volume 9 July/August 1975 » Estudo comparativo entre os métodos de Stoll e Kato quantitativo

Estudo comparativo entre os métodos de Stoll e Kato quantitativo

Ogvalda Devay

Prof. Assistente de Parasltologia

DOI: 10.1590/S0037-86821975000400007


RESUMO

A autora realizou a contagem de ovos por gr. de fezes em 129 amostras de fezes pelos métodos de Kato e de Stoll, incluindo 100 casos de parasitismo por Ascaris lumbricoides, 100 por Trichuris trichiura, 70 por ancilostomideos e 40 por S. mansoni.
Os resultados foram avaliados estatisticamente, evidenciando-se idênticos com as duas técnicas no que se refere a Ascaris lumbricoidesT. trichiuris eS. mansoni, mostrando-se, no entanto, o método de Stoll mais adequado para a contagem de ovos de ancilostomideos.


ABSTRACT

The author examined 129 specimens of faeces using the techniques of Kato and Stoll. 100 cases of Ascaris lumbricoides infection, 100 of Trichocephalus trichiurus, 70 of hookworm infection and 40 of Schistosoma mansoniwere detected. The number of eggs eliminated per gram of faeces was determined using the two methods. The results were statistically analysed using the comparative tests for the two methods at a significance levei of 0,05. The results showed that, for counting eggs, the two techniques presented equal results for A lumbricoides, T. trichiurus and Schistosoma mansoni, but the Stoll technique was more sensitive for hookworms


 

 

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REFERÊNCIAS BIBLIOGRÁFICAS

1. BELL, D. R. – A new method for counting Schistosoma mansoni eggs in feces. Bull. World Health Organ. 29: 525-530, 1963.         [ Links ]

2. CALLOT, J. et alli – Kato’s excellente coprologic technique. Bull. Soc. Pathol. Exot. 62: 747-50, 1969.         [ Links ]

3. GOEDBLOED, E. et alli – Comparison of two methods for the detection of Schistosoma mansoni eggs in stools. Trop. Geog. Med., 22: 472-5, 1970.         [ Links ]

4. KATZ, N. & CHAIA, G. – Cropological diagnosis of schistosomiasis. I – Evaluation of quantitative techniques. Rev. Inst. Med. trop. S. Paulo 10: 295-298, 1968.         [ Links ]

5. KATZ, N. et al. – Evaluation of Kato’ quantitative method through the recovery os Schistosoma mansoni eggs added to human feces. J. Parasitol. 56: 1032-1033, 1969.         [ Links ]

6. KATO, K. – A correct application of the thick smear technic with cellophane paper cover. A Famphlet, 1-9 (Jap. text), 1960.         [ Links ]

7. KOMIYA, Y. & KOBAYA&HI, A. – Evaluation of Kato’s thick smear technic with a cellophane cover for helminth eggs in feces. Jap. J. Parasitol. 19: 59-64, 1966.         [ Links ]

8. MARTIN, C. & BEAVER, P. – Eyaluation of Kato thick smear technique for quantitative diagnosis of helminth infections. Am. J. Trop. Med. Hyg, 17: 382-391, 1968.         [ Links ]

9. STOLL, N. R., – Investigation on the control of hookworm disease. XV. An effective method of counting bookworm eggs in feces. Am. Journ. Hyg. 3: 59-70, 1923.         [ Links ]

10. WHO, Série Informes Técnicos, 1966.         [ Links ]

 

 

Recebido para publicação em 7.5.1975.

 

 

Instituto de Ciências da Saúde – Universidade Federal da Bahia.