Browsing by Author "Irarrázaval M.J."

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    Early and late morbidity and mortality of aortic valve replacement with mechanical or biological prostheses during the last decade: The gold standardMorbimortalidad precoz y alejada del reemplazo valvular aórtico con prótesis mecánica y biológica durante la última década: El estándar de oro
    (2009) Becker P.; Ramírez A.; Cifuentes I.; Rebolledo R.; Zalaquett R.; Morán S.; Arretz C.; Godoy I.; Irarrázaval M.J.
    Background: There is a growing interest in alternative techniques for aortic valve replacement (AVR). Therefore it is important to have updated results of conventional AVR as a valid comparative standard. Aim: To evaluate both perioperative and late morbidity and mortality in patients undergoing conventional AVR, with either mechanical (RVAm) or biological (RVAb) prostheses. Patients and methods: Retrospective review of medical records and operative protocols of patients undergoing AVR between January 1995 and December 2005. Patients with previous cardiac surgery, aortic balloonplasty or simultaneous cardiovascular procedures were excluded. Results: During the study period, 788 patients underwent AVR and 317 met the inclusion criteria. Of the latter, 175 patients aged 13 to 83 years (63% males) were subjected to AVRm and 142 patients aged 49 to 87 years (64% males), were subjected to AVRb. Five (1.6%) patients died during the perioperative period (one AVRm and four AVRb). All were older than 65 years. Perioperative complications were recorded in 29 and 25% of patients in AVRm and AVRb groups, respectively (NS). During a median follow-up of six years, complications were recorded in 12 and 4% of patients in AVRm and AVRb groups, respectively (p <0.05). The actuarial survival for AVRm group at 1, 5 and 10 years, was 96, 92 and 87%, respectively. The figures for AVRb group were 95, 86 and 83%, respectively (NS). The 10 year reintervention free survival was 97% for the AVRm group and 84% for the AVRb (p <0.05). Conclusions: Perioperative mortality and rates of complications of AVR in this series of patients are low, which compares favorably with other series.
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    Littoral cell angioma of the spleen. Report of one caseAngioma de células litorales del bazo. Un diagnóstico de lesión focal esplénica. Caso clínico
    (Academic Press, 2021) Valbuena J.R.; Quezada N.F.; Irarrázaval M.J.; Riveros S.A.
    © 2021 Sociedad Medica de Santiago. All rights reserved.Splenic vascular neoplasms are the most common form of spleen tumors. Among them, littoral cell angioma is rare and it is frequently an incidental finding in imaging studies. It has no specific clinical, laboratory or imaging findings. Splenectomy allows definitive diagnosis throughout a histopathological examination. We report a 52-year-old man presenting with asthenia and abdominal distension. Computed tomography with intravenous contrast showed multiple splenic hypodense masses and a prostatic enlargement. Presuming a lymphoma, a laparoscopic splenectomy was performed. Histopathologic examination diagnosed littoral cell angioma. During urological follow-up, a prostate adenocarcinoma was diagnosed.