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Biomedical subjects

M Pinto

Publications and source records attributed to M Pinto.

153 records · Page 9Linked to original sources

[Myasthenia gravis].

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Combined Modality Therapy↗

[Paracentesis associated to dextran-70 in the treatment of ascites in patients with chronic liver diseases: a randomized therapeutic study].

The treatment of ascites of large volume in chronic liver disease patients was evaluated in the present study. We compared diuretics with paracentesis and an infusion of Dextran-70. Therapeutic efficacy, complications and length of hospital stay were the variables studied. Of the 38 patients, 20 were selected randomly. They were evaluated using clinical, laboratory and/or histological criteria: 10 patients in the paracentesis group with Dextran-70 and 10 in the diuretic group. The groups were similar with respect to age, diagnosis and Child-Pugh classification. However, there was a greater number of males in the paracentesis group with Dextran-70. In each paracentesis, an average of 9.41 liters (4.5 to 14.1) of ascitic fluid was collected. The average hospitalization period in the paracentesis group with Dextran-70 was 10.5 days (8-14), significantly less when compared to the diuretic group: 24.4 days (14-48). In the diuretic group one patient presented complications such as hyperkalemia, increased urea and creatinine levels, while in the paracentesis group with Dextran-70 one patient presented a temperature above 38 degrees C during treatment. The results suggest that paracentesis associated with Dextran-70 could be a therapeutic alternative for chronic liver disease patients with ascites in our population. It was effective; it had no significant side effects; it reduced the length of hospital stay and therefore should decrease the cost and the risk of complications in patients requiring prolonged hospitalization periods.

Ascites↗

[Multicenter study of isolated micro-organisms resistant to antimicrobials in 10 Portuguese hospitals in 1994].

In 1994, Microbiology Laboratories of ten Portuguese hospitals analysed isolated microorganisms found in blood and urine samples and studied antimicrobial susceptibilities of the most frequent bacterial pathogens. From 63780 blood samples, the most frequent were Staphylococcus spp. and from 69189 urine samples significant numbers of Escherichia coli, Enterococcus spp., Pseudomonas aeruginosa and Candida spp. were isolated. Escherichia coli strains (c.7000) revealed a low percentage of resistance to antibiotics with the exceptions of ampicillin (48%) and co-trimoxazol (25%). Klebsiella pneumoniae isolates (c.2000) revealed important resistance to ampicillin (98%), cephalotin (31%), co-trimoxazol (38%) and gentamicin (28%), while values for 3rd generation cephalosporins varied among hospitals, with several strains showing phenotype of extended-spectrum beta-lactamase. A great variation in resistance values of P. aeruginosa (c.4000) was found in relation to the antibiotics as well as to the hospitals. Resistance to methicillin in S. aureus (c.6000) was high, reaching an average of 47%, and it was even higher with S. epidermidis (c.3000) and S. haemolyticus (c.650). Only vancomycin was always active against these strains. In E. faecalis (c.2500) resistance was of 2% to ampicillin, 35% to gentamicin, 45% to streptomycin and 1% to vancomycin. E. faecium isolates (c.300) showed the most worrying results with 70% resistance to ampicillin, 42% to gentamicin, 59% to streptomycin and 9% (30 strains isolated in 5 hospitals) to vancomycin. Vancomycin resistant strains were also resistant to all other antibiotics.

Anti-Bacterial Agents↗

[Perinatal morbidity and mortality related to gestational infection. The histological identification of chorioamnionitis and its incidence in the population studied].

Infection of the embryo and foetus remains a major public health problem. It has been widely accepted as a major cause of spontaneous abortion, premature birth and morbidity and mortality of the newborn. Furthermore, many studies stress the role of chorioamnionitis in the onset of premature labor. We have found a significant incidence of chorioamnionitis in placentas examined in our laboratory, but we do not know the real prevalence of intra amniotic infection and the magnitude of its consequences. Furthermore, there is no data concerning the micro-organisms that can act as pathogens in our patients. The aim of this study was to better define the role of infection in pregnancy in our hospital. As a first approach we studied all the placentas that were sent to the Histopathology Department during 1993, trying to correlate histological findings with clinical data. We found that 38% of 280 placentas had histological criteria for chorioamnionitis, 33% of which were associated with fetal death. Only 13% of these cases had clinical signs of infection. These facts stress the need for a sensitive and selective method of identifying organisms that act as pathogens in intrauterine infection. It may be possible to prevent some of its complications if an earlier diagnosis and identification of the agent are done.

Chorioamnionitis↗