Browsing by Author "Siegel, F."

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Helicobacter pylori vacA s1a and s1b alleles from clinical isolates from different regions of Chile show a distinct geographic distribution
    (BAISHIDENG PUBLISHING GROUP INC, 2005) Diaz, M. I.; Valdivia, A.; Martinez, P.; Palacios, J. L.; Harris, P.; Novales, J.; Garrido, E.; Valderrama, D.; Shilling, C.; Kirberg, A.; Hebel, E.; Fierro, J.; Bravo, R.; Siegel, F.; Leon, G.; Klapp, G.; Venegas, A.
    AIM: To establish the most common vacA alleles in Helicobacter pylori (H pylori) strains isolated from Chilean patients and its relationship with gastritis and gastroduodenal ulcers.
  • No Thumbnail Available
    Item
    Tratamiento de la hemorragia digestiva alta no variceal con termocoagulación endoscópica
    (1992) Ibáñez Anrique, Luis; Chianale Bertolini, José Luis; Siegel, F.; Miquel Poblete, Juan Francisco; Guzmán Bondiek, Sergio; Llanos Valdés, Osvaldo Pablo
    Over a year period, 60 of 172 patients presenting with upper gastrointestinal bleeding were treated by endoscopic thermocoagulation. Entry criteria included active bleeding (pulsatile or oozing), a visible vessel, sentinel clot or the presence of a pigmented protuberance at the ulcer crater. Hemostatic therapy was performed using the heat probe. The physical status and risk of the patients was estimated according to the ASA classification. Hemostasis was obtained in 17 of 21 patients with pulsatile bleeding (81%), 30 of 30 patients with oozing (100%) and 18 of 18 patients with a visible vessel or a pigmented protuberance in the lesion (100%). Three patients, older than 70 years of age, died. All had pulsatile bleeding from a deep ulcer located at the posterior-inferior wall of the duodenal bulb. They were classified as ASA III (n = 1) or IV (n = 2) with significant concomitant illness. These results suggest that endoscopic thermocoagulation is an effective treatment of active upper gastrointestinal bleeding, especially useful in a group of high risk patients.