[Actinotignum schaalii: Report of two cases of bacteremia in Argentina]. / Actinotignum schaalii: reporte de dos casos de bacteriemias en Argentina.

Actinotignum schaalii is an emerging pathogen in elderly patients with urinary tract pathologies. Two cases of A. schaalii bacteremia are described. Case 1: 79-year-old patient with a history of benign prostatic hyperplasia. He was admitted to the ward for febrile syndrome, abdominal pain, and dysuria. Case 2: 95-year-old patient with prostatic adenomectomy, urethrostomy due to urethral stricture, and benign prostatic hyperplasia. He was admitted due to febrile syndrome, productive cough, bilateral infiltrates with right paracardiac image, and pleural effusion. In both patients, A. schaalii was isolated in blood cultures, identified by MALDITOF-MS mass spectrometry. Only in case 1 was it confirmed that the focus of bacteremia was urinary. It is important to suspect this emerging pathogen in urinary infections with pathological sediment without developing in traditional culture media to ensure adequate empirical treatment. Since most of the isolates show resistance to ciprofloxacin and trimethoprim-sulfamethoxazole.

Análisis de 117 episodios de bacteriemia por enterococo: estudio de la epidemiología, microbiología y sensibilidad a los antimicrobianos / Analysis of 117 episodes of enterococcal bacteremia: Study of epidemiology, microbiology and antimicrobial susceptibility

La bacteriemia por Enterococcus adquirió un papel relevante en los últimos años, debido al incremento de casos intrahospitalarios. Nuestro objetivo fue describir los episodios ocurridos en pacientes adultos de nuestro hospital. Entre enero del 2000 y diciembre del 2013 se registraron 117 episodios. El 61% eran varones y el 39% mujeres. La edad promedio fue 68 años. El 91% presentaba condiciones predisponentes. El principal foco fue intraabdominal. Enterococcus faecalis fue responsable del 65% de los casos, Enterococcus faecium del 28% y otras especies del 7%. El 34% fueron bacteriemias polimicrobianas. Todas las cepas de E. faecalis fueron sensibles a ampicilina y vancomicina. El 88% de los aislamientos de E. faecium fue resistente a ampicilina y el 54% a vancomicina y teicoplanina. En nuestro hospital, el enterococo es el sexto patógeno causante de bacteriemia intrahospitalaria y predomina E. faecium resistente a ampicilina y vancomicina.

Enterococcal bacteremia has acquired considerable importance in recent years, mainly due to an increased number of cases that occur during hospital admission. We describe the episodes of enterococcal bacteremia in adult patients recorded at our hospital. Between January 2000 and December 2013, 117 episodes were analyzed. Sixty one percent (61%) of the patients were male and 39% female. The mean age was 68. Predisposing factors were present in 91% of patients. The primary source of infection was intraabdominal. Enterococcus faecalis was responsible for 65% of the cases; E. faecium for 28%; and other species for 7%. Thirty four percent (34%) of cases were polymicrobial bacteremia. All E. faecalis isolates were susceptible to ampicillin and vancomycin. Eighty eight percent (88%) of E. faecium were resistant to ampicillin and 54% to vancomycin and teicoplanin. In our hospital, Enterococcus is the sixth pathogen causing nosocomial bacteremia, with high incidence of ampicillin and vancomycin-resistant E. faecium.

[Analysis of 117 episodes of enterococcal bacteremia: Study of epidemiology, microbiology and antimicrobial susceptibility]. / Análisis de 117 episodios de bacteriemia por enterococo: estudio de la epidemiología, microbiología y sensibilidad a los antimicrobianos.

Enterococcal bacteremia has acquired considerable importance in recent years, mainly due to an increased number of cases that occur during hospital admission. We describe the episodes of enterococcal bacteremia in adult patients recorded at our hospital. Between January 2000 and December 2013, 117 episodes were analyzed. Sixty one percent (61%) of the patients were male and 39% female. The mean age was 68. Predisposing factors were present in 91% of patients. The primary source of infection was intraabdominal. Enterococcus faecalis was responsible for 65% of the cases; E. faecium for 28%; and other species for 7%. Thirty four percent (34%) of cases were polymicrobial bacteremia. All E. faecalis isolates were susceptible to ampicillin and vancomycin. Eighty eight percent (88%) of E. faecium were resistant to ampicillin and 54% to vancomycin and teicoplanin. In our hospital, Enterococcus is the sixth pathogen causing nosocomial bacteremia, with high incidence of ampicillin and vancomycin-resistant E. faecium.

Community-acquired bacteremia in adult patients. analysis of 645 episodes.

Bacteremia is an important cause of morbimortality. This study describes the episodes of communityacquired bacteremia in adult patients registered at our hospital. Between January 2005 and December 2013, 645 episodes were studied. A total of 51% of patients were male and 49% female. The mean age was 67. The most frequent comorbidities were: diabetes (18%), neoplasia (15%), heart disease (10%) and HIV infection (6%). The focus was: urinary (22%), respiratory (18%), cutaneous (15%), abdominal (13%), and others (4%). Gram-negative bacteria prevailed (51.88%). The most frequent microorganisms were Escherichia coli (30.29%), Streptococcus pneumoniae (15.51%), y Staphylococcus aureus (14.06%). Bacteremia was polymicrobial in 7.14% of the cases. Forty percent of E. coli isolates were resistant to ciprofloxacin and 6% to ceftazidime. Fifteen percent of S. aureus strains were resistant to methicillin whereas only 7% of S. pneumoniae expressed high resistance to penicillin with MICs = 2 µg/ mL, according to meningitis breakpoints.