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Biomedical subjects

F Gudiol

Publications and source records attributed to F Gudiol.

At least 127 records · Page 7Linked to original sources

Intravenous ciprofloxacin therapy in severe infections.

Fifty evaluable patients (34 men and 16 women; mean age, 47 years) with severe infections were given intravenous ciprofloxacin (200 mg every 12 hours) for a mean of 14 days. Therapy was continued with oral ciprofloxacin 500 to 750 mg every 12 hours in 34 cases for a mean of 57 days. The sources of the infections were bone and joint (26 patients), respiratory tract (10 patients), urinary tract (four patients), soft tissue (four patients), abdominal (three patients), bacteremia of unknown origin (two patients), and right-sided endocarditis (one patient). Fifteen patients (30 percent) were bacteremic. Causative organisms included Pseudomonas aeruginosa (32 patients), other gram-negative bacilli (18 patients), and gram-positive cocci (nine patients). Minimal inhibitory concentrations ranged between 0.03 and 1 microgram/ml. Mean peak serum concentrations were 1.58 micrograms/ml (intravenous) and 2 micrograms/ml (oral); mean trough serum concentrations were 0.23 micrograms/ml (intravenous) and 0.32 micrograms/ml (oral). Serum bactericidal activity values achieved after intravenous and oral therapy were similar. Response to therapy was evaluated separately in patients with or without osteomyelitis. In 30 patients with infections other than osteomyelitis, clinical cure was achieved in 27 (90 percent), and therapy failure occurred in three patients. In the 20 remaining patients with osteomyelitis, 15 (75 percent) had a satisfactory response, with apparent cure after a mean follow-up of 11 months, whereas five had therapeutical failure (P. aeruginosa became resistant in four of them). Overall, no major adverse effects were encountered. Superinfection by a resistant P. aeruginosa was observed in three patients. Intravenous ciprofloxacin is an effective and safe agent for the therapy of severe infections caused by susceptible organisms.

Adolescent↗

[Hairy leukoplakia: a new disease of the oral mucosa associated with infection by the human immunodeficiency virus].

In 23 out of 227 patients with positive serological tests for the human immunodeficiency virus (10%), seen between June 1987 and May 1988, lingual lesions of hairy leukoplakia (HL) were found. HL was present in 16/188 drug abusers (9%) and in 7/19 homosexuals (32%). In 3 cases HL was the only clinical manifestation of disease, in 11 it was associated with other symptoms of acquired immunodeficiency syndrome related complex (ARC), and in 9 it was found in patients with a previous or concomitant diagnosis of acquired immunodeficiency syndrome. The mean count of CD4 lymphocytes in the 23 patients was 0.22 X 10(9)/l. The diagnosis was made on the basis of the characteristic clinical features. In 3 cases biopsy was carried out, and parakeratosis and vacuolization of the spinous layer cells were found. Remarkably, particles of the herpesvirus group were also found. The lesions oscillated in size or even spontaneously disappeared, at least transiently; however, in the patients treated with zidovudine the improvement appeared to be more significant. The detection of HL discloses a likely infection by the HIV; it is usually associated with other features of ARC and/or severe immune depression, and it requires the institution of antiretroviral treatment.

AIDS-Related Complex↗

Pneumonia due to Legionella pneumophila and pneumococcal pneumonia: similarities and differences on presentation.

We compared clinical, radiological and laboratory data from 32 cases of community-acquired pneumonia due to Legionella pneumophila, with 37 cases of pneumococcal pneumonia (PP). This study revealed few clinical differences between the two types of pneumonia: in our experience Legionnaire's disease presents like a "typical" bacterial pneumonia. Given the difficulty of making a diagnosis on clinical data alone, we propose early aetiological diagnostic measures and recommend that the choice of initial treatment be based not only on the features at the time of presentation, but also on a consideration of the epidemiology of different types of pneumonia in a given area.

Adult↗

Characteristic cutaneous lesions in patients with brucellosis.

Among 436 cases of brucellosis included in a 12-year prospective protocol, we identified 27 patients (6%) with cutaneous lesions (13 men and 14 women; mean age, 35.1 +/- 16.5 years). Twenty-one patients had positive blood cultures for Brucella melitensis. A disseminated violet-erythematous, papulonodular eruption (20 cases) and erythema nodosum-like lesions (three cases) were the most frequent eruptions observed, appearing during the initial episode of the disease or in relapse. Histologic findings were a dermal inflammatory infiltrate of lymphocytes and histiocytes in a perivascular and periadnexal arrangement, with a focally granulomatous appearance, and occasional extension to subcutaneous fat. Skin cultures were positive for B melitensis in two of four cases. Our results suggest that there are characteristic clinical and histologic cutaneous findings in patients with brucellosis and that hematogenous spread of the microorganism can be the most important pathogenic mechanism of these lesions.

Adolescent↗

Characteristics and antibiotic therapy of adult meningitis due to penicillin-resistant pneumococci.

Of 66 episodes of pneumococcal meningitis seen in Bellvitge Hospital, Barcelona, Spain (January 1981 to June 1987), 15 (23 percent) were due to penicillin-resistant pneumococci [minimal inhibitory concentrations (MICs) of 0.1 to 4 micrograms/ml]. Fifty percent of these strains were also resistant to chloramphenicol. Most were sporadic community-acquired cases. Clinical characteristics were similar in both penicillin-resistant and penicillin-sensitive cases. Those cases with MICs of greater than 1 microgram/ml did not show a response to penicillin therapy. Of nine patients treated with cefotaxime (200 to 350 mg/kg per day) with penicillin G MICs of 0.1 to 4 micrograms/ml and cefotaxime MICs of less than or equal to 0.03 to 1 microgram/ml, seven recovered, one experienced a relapse after 14 days of therapy and the infection was cured with intravenous vancomycin, and one patient died with sterile cerebrospinal fluid. Thus, adults with meningitis due to penicillin-resistant pneumococci may be adequately treated with high doses (around 300 mg/kg per day) of intravenous cefotaxime if MICs of penicillin G are less than or equal to 4 micrograms/ml. Cases with higher resistance may require another antibiotic such as vancomycin.

Adult↗

Specific antibodies detected during relapse of human brucellosis.

We studied 10 patients who had a relapse of brucellosis for significant serological changes during relapse. By the Coombs test, the pre-relapse and post-relapse median (range) titers of antibody to Brucella were 1:1120 (1:40-1:10,240) and 1:10,240 (1:40-1:81,920), respectively (P = .0069); by enzyme-linked immunosorbent assay (ELISA) for IgG, these values were 1:2240 (1:60-1:10,240) and 1:10,240 (1:160-1:81,920; P = .0069); by ELISA for IgA, the median titer increased 3.36 times but did not reach statistical significance (P = .0929); by tube agglutination, dithiothreitol (DTT) agglutination, and ELISA for IgM, median titers did not change. Nine patients had a significant titer increase by Coombs test and IgG ELISA, three had a significant increase by tube and DTT agglutination, none had significant increases by IgM ELISA, and one had no significant increase after relapse. Our findings show that for most patients with a relapse of brucellosis, there is an increase in IgG titers, as detected by ELISA and Coombs test, but no change in IgM titers.

Adolescent↗

Risk factors and response to antibiotic therapy in adults with bacteremic pneumonia caused by penicillin-resistant pneumococci.

We retrospectively studied 24 adults with bacteremic pneumonia (25 episodes) due to penicillin-resistant pneumococci, for which the minimal inhibitory concentrations (MICs) of penicillin G were 0.12 to 8.0 micrograms per milliliter; 79 percent of the strains showed multiple antibiotic resistance. As compared with 48 control patients with bacteremic pneumonia caused by penicillin-sensitive pneumococci, the 24 patients with penicillin-resistant pneumococci had a significantly higher incidence of use of beta-lactam antibiotics during the previous three months (65 vs. 17 percent, P = 0.0008), hospitalization during the previous three months (58 vs. 21 percent, P = 0.0038), nosocomial pneumonia (37 vs. 6 percent, P = 0.0032), episodes of pneumonia during the previous year (29 vs. 4 percent, P = 0.010), and factors on initial presentation that were associated with a poor prognosis (an initially critical condition) (67 vs. 27 percent, P = 0.0030). Their overall mortality rate was significantly higher (54 vs. 25 percent, P = 0.0298). Eleven of 19 episodes of pneumonia due to organisms for which MICs were 0.12 to 2.0 micrograms per milliliter, which were treated with penicillin G (10 episodes) or another beta-lactam agent (9 episodes), resulted in recovery (2 of 10 patients in an initially critical condition recovered, as compared with all of 9 not initially in a critical condition, P = 0.0012). Two patients who had penicillin-resistant pneumococci for which MICs were 4.0 and 8.0 micrograms per milliliter did not respond to ampicillin and ticarcillin therapy, respectively. Our study suggests that pneumonia due to penicillin-resistant pneumococci may occur more often in a population with some identifiable risk factors, and may respond to intravenous high-dose penicillin therapy if MICs are less than or equal to 2 micrograms per milliliter. Cases involving higher resistance may require an alternative antibiotic.

Anti-Bacterial Agents↗