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Query: UMLS:C0243026 (sepsis)
 52,417 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Almost all cases of Clostridium difficile-related pseudomembranous colitis are related to antimicrobial therapy. Virtually all antibacterial agents have been implicated, notable exceptions being vancomycin and parenterally administered aminoglycosides. The most prominent causes of colitis are ampicillin, clindamycin and various cephalosporins. In general, this complication is related to suppression of indigenous flora and overgrowth of C. difficile. In the case of ampicillin, however, C. difficile is always susceptible. Beta-lactamase production by elements of the bowel flora leads to destruction of ampicillin and subsequently to increased counts of C. difficile and colitis. Much less well-appreciated, and much less studied, is overgrowth and subsequent infection by other types of anaerobic bacteria. Superinfection by anaerobes may follow the use of "intestinal antiseptics" such as oral neomycin; indeed, that is the rationale for the current practice in the U.S. of combining erythromycin or tetracycline with the oral aminoglycoside. Superinfection with anaerobes may also follow systemic administration of various antimicrobial compounds. Such superinfections may involve any site in the body, although sepsis and intraabdominal infection have been noted most commonly; all major types of anaerobes have been involved. A wide variety of antimicrobial compounds has been implicated in predisposing to anaerobic infection.
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PMID:Anaerobic infections and Clostridium difficile colitis emerging during antibacterial therapy. 354 21

Although moxalactam is not, technically speaking, a cephalosporin it is chemically and microbiologically so closely related to those compounds that it can be viewed as a member of the cephalosporin family. Moxalactam has a spectrum of activity that includes both gram positive and gram negative bacteria. Its gram positive activity is less than earlier cephalosporins, but its activity against the Enterobacteriaceae is similar to that of the aminoglycoside family of antibiotics in most comparative studies. Although moxalactam is considerably less active against gram positive bacteria than cefotaxime, another third generation cephalosporin, its higher and more prolonged serum levels probably offset this disadvantage. Compared to cefoperazone, the stability of moxalactam to many types of beta lactamases produced by gram negative bacteria may be advantageous in the therapy of infections caused by hospital-acquired pathogens. Clinical studies suggest that moxalactam can be used for empiric therapy of suspected gram negative infections when Pseudomonas and other non-fermentative bacteria, such as Acinetobacter, are not suspected. Impressive improvements in the survival of patients with gram negative enteric bacillary meningitis have been reported. Although moxalactam, cefotaxime, and cefoperazone have activity against Pseudomonas aeruginosa, none of these antibiotics should be used alone as therapy for suspected or proven severe systemic infections caused by this pathogen. Cost is a major problem with all of the new cephalosporin-like antibiotics. While this high cost may be partially balanced by the use of a single agent compared to an antibiotic combination for therapy in some situations, these antibiotics are not cost effective for prophylactic use. Superinfection with fungi, such as Candida, and Streptococcus faecalis have occurred, and toxicities, such as bleeding due to vitamin K deficiency and disulfuram-like reactions, have also been reported. Reports of resistance to moxalactam and the other third generation cephalosporins are of major concern and indicate the need to closely monitor antibiotic susceptibility patterns of hospital acquired organisms if these antibiotics are to be used for empiric therapy of suspected gram negative non-pseudomonas sepsis.
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PMID:A comparative evaluation of moxalactam: antimicrobial activity, pharmacokinetics, adverse reactions, and clinical efficacy. 622 Dec 37

Tobramycin in combination with clindamycin or lincomycin were used as systemic antibiotics in the treatment of 20 consecutive patients with septic peritonitis or intraabdominal sepsis, 10 of which were in septic shock. Doses were: tobramycin 1.5 mg/kg body weight every 8 hours, with prolonged dosage interval in patients with reduced renal function, clindamycin 0.9 g every 8 hours and lincomycin 1.2 g every 8 hours. Therapy was monitored by means of tobramycin serum concentration determinations and renal function tests. Eventual cure of the infection was obtained in 19 patients. In 2 of these, the effects of the antibiotics were doubtful. Side effects were observed on 8 occasions: One patient had a slight and temporary subjective hearing loss, coinciding with raised trough levels of tobramycin. Diarrhoea occurred in 3 cases and skin reactions in 3 cases. Superinfection with Candida albicans fungemia occurred in one patient. From the overall results it is concluded that the antibiotic regimen is of value in serious life-threatening infections. Although the tobramycin dose was higher than customarily used in Scandinavia at the time, 0 hour and 1 hour serum concentrations remained stable during therapy in patients whose renal function was normal at onset of therapy. Serum creatinine (S-Cr) levels in these patients were also essentially unchanged. Temporary reductions in osmolality (Osm) ratio Osm-urine/Osm-serum occurred in 11 patients despite normal S-Cr, but it was hard to attribute these impairments of renal function to tobramycin specifically. It was also doubtful whether tobramycin further aggravated renal function in those patients where it was impaired at onset of therapy. Thus, no conclusive evidence of clinically important tobramycin-induced nephrotoxicity were found. We suggest that the dosage schedule of tobramycin used in this study is applied when treating serious intraabdominal infections.
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PMID:High-dose tobramycin combined with clindamycin or lincomycin in the treatment of septic peritonitis and intraabdominal sepsis. 732 60

Calciphylaxis is a rate complication of unknown pathogenesis in patients with end stage renal disease. It is characterized by calcification of tunica media of small arteries associated with intimal fibrosis and thrombus formation which leads to the development of skin and subcutaneous tissue necrosis. Superinfection of skin lesions is a common consequence of this syndrome which may lead to the sepsis. The prognosis of this condition in serious. We performed a retrospective study of 6 subjects (4 men and 2 women) in the age of 35 to 59 years. We followed the parameters of calcium-phosphate metabolism, presence of calciphylaxis risk factors and the effect of parathyreoidectomy. Five patients were on hemodialysis, one had a kidney transplant. Skin and subcutaneous tissue necrosis were present in all subjects. The serum levels of parathormone were either high, normal or low, levels of calcium were normal or slightly elevated and phosphate levels were high or normal. Calcium was substituted before calciphylaxis development in 5 patients, calcitriole in 3 of therm. Five patients underwent parathyroidectomy. Three patients died (all of sepsis), one patient had the lower into amputation for infected lesions and the remaining two achieved regression. Our findings do support the hypothesis that calcium and calcitriole administration participates in development of calciphylaxis. Fatal prognosis of the once infections skin lesions was also proved.
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PMID:[The calciphylaxis syndrome as a complication of chronic kidney failure. 6 case reports and literature review]. 1209 60

Superimposed infection of osteoradionecrotic cervical spine with cranial extension is difficult to treat and potentially fatal. This report describes the case of a middle-aged Chinese man 11 years post radical radiotherapy for nasopharyngeal cancer with no evidence of disease presenting initially with neck pain secondary to cervical osteoradionecrosis. He was re-admitted a month later with aspiration pneumonia associated with Streptococcus milleri bacteraemia, complicated by septic shock. The last re-admission was 2 months later with fever, expressive dysphasia and right upper motor neuron signs. There was interval increase of dental and peridental soft tissue mass, interval widening of atlantodental distance on MRI cervical spine associated with pneumocephalus, meningeal enhancement and pre-pontine soft tissue mass on CT brain consistent with infected osteoradionecrotic cervical spine complicated by cranial extension. The patient also had concomitant bilateral pneumonia and subsequently passed away from fulminant sepsis.
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PMID:Osteoradionecrosis of the cervical spine complicated by pneumocephalus and meningitis in a nasopharyngeal cancer patient radically treated with radiotherapy 11 years ago. 2168 29

Group A Streptococcus (GAS) are pathogenic bacteria of the genus Streptococcus and cause severe invasive infections that comprise a wide range of diverse diseases, including acute respiratory distress syndrome, renal failure, toxic shock-like syndrome, sepsis, cellulitis and necrotizing fasciitis. The essential virulence, infected host and external environmental factors required for invasive GAS infections have not yet been determined. Superinfection with influenza virus and GAS induced invasive GAS infections was demonstrated by our team in a mouse model, after which clinical cases of invasive GAS infections secondary to influenza virus infection were reported by other investigators in Japan, USA, Canada, UK China, and other countries. However, the pathogenic mechanisms underlying influenza virus-GAS superinfection are not yet fully understood. The present review describes the current knowledge about invasive GAS infections by superinfection. Topics addressed include the bacteriological, virological and immunological mechanisms impacting invasion upon superinfection on top of underlying influenza virus infection by GAS and other bacteria (i.e., Streptococcus pneumoniae and Staphylococcus aureus). Future prospects are also discussed.
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PMID:Pathogenic mechanisms of invasive group A Streptococcus infections by influenza virus-group A Streptococcus superinfection. 2937 25