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Biomedical subjects

S Donoso

Publications and source records attributed to S Donoso.

At least 19 recordsLinked to original sources
PubMed1990

[Incidence of myocarditis in patients with dilated cardiomyopathy].

We performed right ventricular endomyocardial biopsies in 23 patients with dilated cardiomyopathy aged 45 +/- 14 years. All patients had congestive heart failure of unknown etiology dating up to one year before the procedure (57% less than 3 months). NYHA functional class was II in 5, III in 12 and IV in 6 patients. All patients had evidence of systolic dysfunction and a dilated left ventricle (LV diastolic dimension 68 +/- 11 and systolic dimension 55 +/- 11). Definite evidence of myocarditis, based on findings of inflammatory infiltrate and cellular damage, was found in 6 patients (26%), borderline myocarditis in 9 and abnormalities consistent with dilated cardiomyopathy in 8. The incidence of myocarditis here reported is lower than previously figures based on findings of more than 5 lymphocytes per high power field. In this series, clinical and functional aspects of heart failure did not differ in patients with or without evidence of myocarditis.

Adolescent↗
PubMed1990

[Wegener's granulomatosis: clinical and pathological report of 22 cases].

We report clinical and pathologic findings in 22 patients with Wegener's granulomatosis collected from 1966 to 1989. Ten cases were analyzed retrospectively. Organs affected included the lungs (n = 18), upper airways (16), kidneys (15), musculo-skeletal system (10), eyes (8), skin (7) and ear (5). Clinical manifestations of airway involvement included nasal obstruction, dysphonia and epistaxis. Lung involvement was evident in chest X-rays in 18 patients, 14 with a nodular aspects. Histologic study in 14 of these patients showed necrotizing and granulomatous vasculitis. Clinical evidence of nephropathy was evident in 15 patients and led to rapidly progressive renal failure in 8. Biopsy in this group (n = 14) revealed focal glomerulonephritis in 6 and diffuse disease in 8. Overall, 13 patients died: 5 without diagnosis, 4 from renal failure, 2 from sepsis, 1 from a lymphoma developing 3 years after immune suppressive therapy and 1 from unknown causes. Among survivors, one received a renal transplant and one remains in chronic dialysis. The diagnosis of Wegener's granulomatosis is therefore based on clinical findings including rhino pharyngeal, pulmonary and renal manifestations.

Adult↗
PubMed1990

[Primary biliary cirrhosis. The clinical experience in 31 patients].

We analyzed 31 patients with a diagnosis of primary biliary cirrhosis, 29 of them males, aged 23 to 72 years. Liver biopsy was diagnostic in all showing initial findings of the disease in 5. Echotomography and cholangiography demonstrated a patent biliary, tract. Anti-mitochondrial antibodies were present in 94% of patients. Alkaline phosphatase and biliary acid levels were useful for diagnosis. Pruritus was present with varying intensity in all patients, with premenstrual exacerbations in 5 females who had cholestasis of pregnancy or hepatitis caused by progestin drugs before developing cirrhosis. Recurrent urinary tract infection was present in 8 patients, osteoporosis in 24, Sjogren's syndrome in 24 and Crest syndrome in 4. Survival ranged from 1 to 12 years, death being caused by ruptured esophageal varices in 12 patients and by liver failure in 7. Persistence of pruritus and altered liver function tests after cholestasis of pregnancy or hepatitis caused by progestins should lead to investigation of biliary cirrhosis.

Adult↗
PubMed1978

Clinical and pathological study of asymptomatic HBsAg carriers in Chile.

A clinical, biochemical, and pathological study was performed in 38 chronic HBsAg carriers. The study group is a part of 393 carriers found among 117 705 voluntary blood donors at the National Blood Bank, Hospital del Salvador, Santiago, Chile. None of the 38 carriers had a past history of illicit drug abuse, hepatitis, or work involving a high risk of hepatitis B virus infection. Ten individuals had a normal liver biopsy, 17 reactive non-specific hepatitis, one fatty changes, four chr onic persistent hepatitis, one aggressive hepatitis, two post-necrotic cirrhosis, and three alcoholic cirrhosis. There was not a close correlation between liver function test and liver histology. The most significant laboratory finding was the postivity of alpha fetoprotein in two cases. During the follow-up the two alpha fetoprotein patients presented a hepatocarcinoma 12 and 14 months after admission to the study.

Adolescent↗