sultamicillin and Opportunistic-Infections

Acinetobacter ursingii is an aerobic, gram-negative, opportunistic microorganism which is rarely isolated among Acinetobacter species. We present two immunocompetent infants who developed bacteremia due to A. ursingii. The first patient is a two -month- old boy who had been hospitalized in pediatric surgery unit for suspected tracheo-esophageal fistula because of recurrent aspiration pneumonia unresponsive to antibiotic therapy. The second patient is a fourteen -month- old boy with prolonged vomiting and diarrhea. A. ursingii was isolated from their blood cultures. They were successfully treated with ampicillin-sulbactam. Although A. ursingii has recently been isolated from a clinical specimen; reports of infection with A. ursingii in children are rare. A. ursingii should be kept in mind as an opportunistic microorganism in children.

Topics: Acinetobacter; Acinetobacter Infections; Ampicillin; Anti-Bacterial Agents; Bacteremia; Humans; Infant; Male; Opportunistic Infections; Sulbactam

A case of listeriosis in a patient undergoing long-term hemodialysis is reported. The 69-year-old man with chronic renal failure due to polycystic renal dysplasia had received hemodialysis treatment for 10 years. Renal anemia and iron overload developed within this time. In the course of a hemodialysis the patient presented with malaise, chills and fever to 38.7 degrees C. Blood culture specimens were obtained and the patient received ampicillin-sulbactam. Blood culture specimens subsequently showed growth of Listeria monocytogenes. During therapy the patient improved rapidly and was free from fever on day 5. The relation of iron overload and Listeria infection is discussed.

Topics: Aged; Ampicillin; Anemia; Anti-Bacterial Agents; Bacteremia; Humans; Iron Overload; Kidney Failure, Chronic; Listeriosis; Male; Opportunistic Infections; Polycystic Kidney Diseases; Renal Dialysis; Sulbactam

Acinetobacter baumannii is an opportunistic pathogen associated with numerous nosocomial infections. In recent years it has shown extraordinary ease in developing resistance to most antimicrobial agents, which is a serious problem as it makes these infections difficult to treat. We determined the in vitro activity of eight quinolones, five betalactam agents and colistin in 160 clinical isolates of A. baumannii. In general, we observed a high rate of resistance to the quinolones (90%), excluding clinafloxacin (25%), and to ampicillin-sulbactam (61.25%) and imipenem (50%). Colistin is the agent with least resistance (13.125%), although its toxicity limits its therapeutic use. Clinafloxacin may be a good option to treat A. baumannii infections, especially in cases of therapeutic failure with other antimicrobial agents.

Topics: Acinetobacter; Acinetobacter Infections; Ampicillin; Anti-Infective Agents; Aza Compounds; Cefepime; Cephalosporins; Ciprofloxacin; Colistin; Fluoroquinolones; Gatifloxacin; Humans; Imipenem; Meropenem; Microbial Sensitivity Tests; Moxifloxacin; Nalidixic Acid; Naphthyridines; Norfloxacin; Ofloxacin; Opportunistic Infections; Quinolines; Sulbactam; Thienamycins