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Query: UMLS:C0519030 (Klebsiella)
 21,988 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The pathogenesis, clinical signs and symptoms, diagnosis and treatment of chronic bacterial prostatitis (CBP) are reviewed. The most common organism associated with CBP is Escherichia coli, although infections with Klebsiella, Enterobacter, Proteus, Pseudomonas, and enterococci have also been documented. The only symptoms of CBP may be those of an acute urinary-tract infection. The use of simultaneous quantitative urine cultures represents the most accurate method for diagnosing CBP. The use of trimethoprim-sulfamethoxazole, the current drug of choice for CBP, is based on results in animals showing good penetration of trimethoprim into acidic prostatic fluid and the knowledge that normal human prostatic fluid is acidic. Studies in patients with CBP, who have alkaline prostatic fluid, have demonstrated poor penetration of trimethoprim into prostatic fluid, which may explain the cure rate of about 40% seen with trimethoprim-sulfamethoxazole. A few patients have been treated successfully with kanamycin and streptomycin, but these drugs must be given by injection. Carbenicillin indanyl sodium has been associated with cure rates of almost 70% in a small number of studies. Both doxycycline and minocycline have been used to treat CBP, but inadequate urine-culture data make these studies difficult to evaluate. Erythromycin produced a cure rate of 88% in one study in patients who received 500 mg (as the stearate salt) four times daily for 14 days. Local injection of antibiotics into the prostate has been reported to be effective in a few cases. Although controlled comparative trials with trimethoprim-sulfamethoxazole are needed, carbenicillin indanyl sodium and erythromycin appear to be the drugs of choice for treating CBP; trimethoprim-sulfamethoxazole should be reserved for patients with CBP unable to tolerate or unresponsive to therapy with these agents.
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PMID:Treatment of chronic bacterial prostatitis. 636 16

Our center's experience with 15 pyogenic liver abscesses in 14 children from 1979 to 1992 showed an incidence of 20 per 100,000 pediatric hospital admissions. Eight of the 15 liver abscesses were cryptogenic in origin. The clinical features and laboratory findings were non-specific. Improved imaging techniques such as real time sonography and computed tomography made early diagnosis feasible. Klebsiella pneumoniae was the most common pathogen in this study. Drainage combined with antibiotics provides the most important treatment for this disease. Before 1986, surgery was frequently used, but now percutaneous drainage is preferred. Surgery may be reserved for those who respond poorly to percutaneous drainage and medical treatment. One of the 14 patients in this study died.
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PMID:Pyogenic liver abscess in children. 791 80

Blood cultures were performed on 891 children (aged 1 month-16 years) who presented at the Jos University Teaching Hospital (JUTH) with presumed diagnosis of septicaemia, over a three year period (January 1994-December 1996) in order to determine the predominant bacterial agents. One hundred and thirty-nine (15.6%) out of 891 blood cultures were positive. Five of the blood cultures yielded double isolates. Staph. aureus was the commonest bacterial agent isolated and accounted for 36.0%, of all the isolates. Klebsiella spp and Salmonella spp each accounted for 18.7% and 15.8% respectively. Other bacterial agents isolated included E. coli 7.9%, coliforms (untyped) 6.5%, Pseudomonas spp 3.6%, Proteus spp 2.2% and, miscellaneous organisms 9.3%. Ninety-six percent, 84.0% and 81.0% of Salmonella spp., Staph. aureus and Klebsiella spp. isolated were sensitive to gentamicin respectively. Forty percent of the Staph. aureus isolated was resistant to cloxacillin. Two (1.7%) of the Staph aureus isolated were resistant to all the antibiotics tested. With the exception of Pseudomonas spp (80.0% sensitive only to ceftazidime), sensitivity of most of the organisms to the third generation cephalosporins was generally excellent. It is concluded that gentamicin remains an effective drug in childhood septicaemi. Although the sensitivity to the third generation cephalosporins remains excellent, these drugs should be reserved for life-threatening cases and those that fail to respond to initial therapy with gentamicin.
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PMID:Predominant bacterial agents of childhood septicaemia in Jos. 1170 63

A total of 1,661 pregnant women aged between 13 and 45 years were screened for bacteriuria by urine culture. Of the 1,661 culture results, 615 (37%) yielded no growth; 728 (43.8%) yielded no significant growth (presence of <10(5) organisms/ml urine of one or more types of bacteria); 286 (17.2%) yielded mixed growth (presence of >10(5) organisms/ml urine of more than one type of bacteria) and only 32 (1.9%) showed significant growth (presence of >10(5) organisms/ml urine of a single bacterium). Urine microscopy was also conducted. Two hundred and twenty-four (13.5%) specimens had >10 white blood cells/ml urine, of which 66 had >100 white blood cells; 13 were from the significant growth group. Three hundred and seventy-four (22.5%) specimens showed the presence of bacteria, 42 (2.5%) had red blood cells, 370 (22.3%) had epithelial cells, 58 (3.5%) had crystals, and 14 (0.8%) had yeasts. The most common bacterium isolated was Escherichia coli (12; 40%); the others included group B Streptococcus (5; 15%), Klebsiella spp (5; 15%), Diphtheroids (2), and Candida albicans (2). Fifty-two percent of tested strains were sensitive to ampicillin; 24 of 28 strains (85.7%) were sensitive to ciprofloxacin; all 7 strains tested were sensitive to nitrofurantoin and all 20 strains tested were sensitive to cotrimoxazole; 14/20 (70%) and 16/17 (94.1%) were sensitive to cephalexin and cefuroxime respectively. This study shows that asymptomatic bacteriuria does occur in pregnant women, albeit at a very low rate in an urban setting like Cheras. Urine microscopy is not specific and only serves as a guide to bacteriuria. The commonest causative organisms are those from the gastrointestinal tract and vagina. The antibiogram showed that cefuroxime and cephalexin are likely to be effective in treating bacteriuria: ampicillin must be reserved for Gram-negative organisms. For Gram-positive organisms, of which Group B Streptococcus is important, ampicillin is still effective in vitro. Nitrofurantion and cotrimoxazole have excellent activity in vitro and should be considered for therapy. 17.2% of the urine culture yielded mixed growth: likely to indicate that contamination of urine specimens still happens despite the strict instructions given to patients about the collection of a midstream urine specimen. Proper collection, appropriate transport, and the early processing of urine specimens remain essential.
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PMID:Laboratory aspects of asymptomatic bacteriuria in pregnancy. 1269 94

This retrospective study examined the characteristics of 338 pediatric patients presenting with a first episode of symptomatic urinary tract infection at Taichung Veterans General Hospital from November 1996 to December 2001. Escherichia coli was the most common pathogen (72.5%), followed by Proteus mirabilis (8.3%), Enterococcus (5.6%), and Klebsiella pneumoniae (4.7%). They were more susceptible to first-generation cephalosporin in comparison with other first-line antimicrobial agents such as trimethoprim/sulfamethoxazole, ampicillin, and gentamicin. Two hundred and eighty-seven (84.9%) of the 338 patients were divided into 3 groups according to the type of antibiotic treatment received, and the susceptibility rate and the averaged day of defervescence after effective antibiotic therapy were compared among the groups. Group 1 consisted of those patients treated with cefazolin or cephalexin alone (95%, 2.1 days); Group 2, cefazolin plus gentamicin (88.9%, 2.8 days); and Group 3, ampicillin plus gentamicin (76.1%, 2.3 days). A total of 38 (13.2%) cases from the 3 antibiotic groups did not respond to empiric antibiotics. For non-susceptible infections, when the antibiotic regimen was switched from cefazolin plus gentamicin to ampicillin alone, only 4 (20%) strains became susceptible, compared with 10 strains (62.5%) becoming susceptible after switching from ampicillin plus gentamicin to cefazolin alone (p < 0.01). The results indicated that first-generation cephalosporin alone is an appropriate treatment for pediatric cases of community-acquired urinary tract infection and suggest that antimicrobial combinations should be reserved for serious or critical cases.
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PMID:Is combination antimicrobial therapy required for urinary tract infection in children? 1274 35

Combinations of beta-lactamase inhibitors with penicillins, especially aminopenicillins, have broad-spectrum antibacterial activity against most of the common pathogens of the respiratory and urinary tracts. This means that they are an ideal treatment for infections such as otitis media, sinusitis, special cases of pharyngeal tonsillitis (recurring forms, indirect pathogenic action, or after the failure of amoxicillin monotherapy), acute exacerbations of chronic bronchitis, cystitis, urethritis, etc. The amoxicillin-sulbactam combination is active against both beta-lactamase producer and nonproducer strains, and is effective against Gram-positive cocci (Streptococcus pneumoniae, Streptococcus pyogenes, Staphylococcus aureus of nonhospital origin), Gram-negative cocci (Neisseria gonorrhoeae, Moraxella catarrhalis and others), Gram-negative bacilli (nonhospital strains of Haemophilus influenzae, Escherichia coli and Klebsiella pneumoniae and others) and anaerobes. Its antimicrobial activity means that it is indicated in the treatment of respiratory, ear, nose and throat, urinary, dermatological and gynecological infections caused by susceptible germs, as well as in a variety of surgical situations (both as a treatment and as prophylaxis). It is absorbed very well orally, and its pharmacokinetic profile is very favorable, with very good tissue penetration. It is reasonably well tolerated: in a variable percentage of cases it may cause modification of intestinal transit and/or fecal consistency, which usually abates spontaneously. The new formulation for administration at intervals of 12 h is easier to use, is better tolerated and favors completion of therapy. In summary, the amoxicillin-sulbactam combination is effective and well tolerated in most infections of nonhospital origin in adults and children. (c) 2001 Prous Science. All rights reserved.
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PMID:Amoxicillin-sulbactam: A clinical and therapeutic review. 1278 93

The incidence of antibiotic-associated diarrhea (AAD) differs with the antibiotic and varies from 15 - 25 %. Most cases of AAD are directly or indirectly caused by alterations of gut microflora by the antibiotics resulting in clinically mild AAD cases due to functional disturbances of intestinal carbohydrate or bile acid metabolism. Alternatively, changes in the gut flora allow pathogens to proliferate. Clostridium difficile is responsible for 10 - 15 % of all cases of AAD and almost of all cases of antibiotic-associated pseudomembraneous colitis. There is also a growing body of evidence which supports the responsibility of Klebsiella oxytoca for the development of antibiotic-associated hemorrhagic colitis. Diagnosing Clostridium difficile-associated diarrhea should be based both on fecal-cytotoxin detection and culture. With respect to specific therapy, metronidazol has become the first choice whereas treatment with oral vancomycin should be reserved for patients who have contraindications or intolerance to or who have failed to respond to metronidazole. Probiotics such as Sacharomyces boulardii can reduce the risk of development. Restrictive antibiotic policies (e. g. restricting clindamycin and cephalosporins) and the implementation of a comprehensive hospital infection control have also been shown to be effective in reducing the incidence of AAD.
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PMID:[Antibiotic-associated diarrhea]. 1645 62

We report the atypical case of a nondiabetic 66-year old male with severe abdominal pain and vomiting who was found to have emphysematous cystitis. Of all gas-forming infections of the urinary tract emphysematous cystitis is the most common and the least severe. The major risk factors are diabetes mellitus and urinary tract obstruction. Most frequent causative pathogens are Escherichia coli and Klebsiella pneumoniae. The clinical presentation is nonspecific and ranges from asymptomatic urinary tract infection to urosepsis and septic shock. The diagnosis is made by abdominal imaging. Treatment consists of broad-spectrum antibiotics, bladder drainage, and management of the risk factors. Surgery is reserved for severe cases. Overall mortality rate of emphysematous cystitis is 7%. Immediate diagnosis and treatment is necessary because of the rapid progression to bladder necrosis, emphysematous pyelonephritis, urosepsis, and possibly fatal evolution.
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PMID:Emphysematous cystitis: report of an atypical case. 2260 8

This study aimed to (i) investigate the antimicrobial susceptibilities of bacteria that cause urinary tract infections (UTIs) in outpatient and inpatient settings and (ii) evaluate the risk factors for emerging antimicrobial drug resistance in UTIs in South Korea. In total, 3,023 samples without duplication were collected from females between 25 and 65 years of age who had been diagnosed with a urinary tract infection. Multicenter patient data were collected using a Web-based electronic system and then evaluated. The isolation rates of Escherichia coli, Klebsiella pneumoniae, and Enterococcus faecium in the outpatient setting were 78.1, 4.7, and 1.3%, respectively; in the inpatient setting, the isolation rates of these microorganisms were 37.8, 9.9, and 14.8%, respectively. The susceptibilities of E. coli to amikacin, amoxicillin-clavulanic acid, cefotaxime, cefoxitin, ciprofloxacin, piperacillin-tazobactam, and imipenem in the outpatient setting were 99.4, 79.8, 89.4, 92.8, 69.8, 96.9, and 100.0%, respectively; in the inpatient setting, the susceptibilities to these antibiotics were 97.8, 73.9, 73.7, 82.1, 53.6, 93.2, and 100.0%, respectively. The most unique and common risk factor for emerging antimicrobial-resistant E. coli, K. pneumoniae, and E. faecium was previous exposure to antimicrobials. On the basis of these data, the use of fluoroquinolones should be reserved until culture data are available for the treatment of UTIs in South Korea. The present study will serve as a useful reference for Far Eastern Asia.
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PMID:Antimicrobial susceptibility pattern and epidemiology of female urinary tract infections in South Korea, 2010-2011. 2395 15

Polymyxins are reserved for salvage therapy of infections caused by carbapenem-resistant Klebsiella pneumoniae (CRKP). Though synergy has been demonstrated for the combination of polymyxins with carbapenems or tigecycline, in vitro synergy tests are nonstandardized, and the clinical effect of synergy remains unclear. This study describes outcomes for patients with CRKP infections who were treated with polymyxin B monotherapy. We retrospectively reviewed the medical records of patients with CRKP infections who received polymyxin B monotherapy from 2007 to 2011. Clinical, microbiology, and antimicrobial treatment data were collected. Risk factors for treatment failure were identified by logistic regression. Forty patients were included in the analysis. Twenty-nine of 40 (73%) patients achieved clinical cure as defined by clinician-documented improvement in signs and symptoms of infections, and 17/32 (53%) patients with follow-up culture data achieved microbiological cure. End-of-treatment mortality was 10%, and 30-day mortality was 28%. In a multivariate analysis, baseline renal insufficiency was associated with a 6.0-fold increase in clinical failure after adjusting for septic shock (odds ratio [OR] = 6.0; 95% confidence interval [CI] = 1.22 to 29.59). Breakthrough infections with organisms intrinsically resistant to polymyxins occurred in 3 patients during the treatment. Eighteen of 40 (45%) patients developed a new CRKP infection a median of 23 days after initial polymyxin B treatment, and 3 of these 18 infections were polymyxin resistant. The clinical cure rate achieved in this retrospective study was 73% of patients with CRKP infections treated with polymyxin B monotherapy. Baseline renal insufficiency was a risk factor for treatment failure after adjusting for septic shock. Breakthrough infections with organisms intrinsically resistant to polymyxin B and development of resistance to polymyxin B in subsequent CRKP isolates are of concern.
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PMID:Risk factors for treatment failure of polymyxin B monotherapy for carbapenem-resistant Klebsiella pneumoniae infections. 2395 21


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