ro13-9904 and Cystitis

This review focuses on antibiotic treatment of acute urinary tract infections (UTIs) in children who are neurologically and anatomically intact. Neonates younger than 28 days with a febrile UTI should be hospitalized, given supportive care and treated with parenteral amoxicillin and cefotaxime. Following a good response to 3 to 4 days of parenteral antibacterial therapy, outpatient treatment with an oral antibiotic should be given to complete 14 days of therapy. Infants from 28 days to 3 months who appear clinically ill with a febrile UTI should be hospitalized, receive supportive care and parenteral administration of a 3(rd) generation cephalosporin or gentamicin. When these infants are clinically improved and afebrile for 24 hours they should be discharged to complete 14 days of therapy with an oral antibiotic. Infants from 28 days to 3 months of age who are not acutely ill with a febrile UTI may be managed as outpatients. Ceftriaxone or gentamicin should be administered parenterally and given each 24 h until the infant is afebrile for 24 hours. Fourteen days of therapy should be completed with an oral antibiotic. Children with complicated pyelonephritis should be hospitalized, receive supportive care and parenteral ceftriaxone or gentamicin each 24 hours until clinically improved and without fever for 24 hours. They should then complete 10 to 14 days of therapy with an oral antibiotic as an outpatient. Children with uncomplicated pyelonephritis should be rehydrated in the outpatient department (if necessary) and receive parenteral ceftriaxone or gentamicin each 24 hours until without fever for 24 hours. If clinically improved they should receive an oral antibiotic to complete 10 to 14 days of therapy. Children with cystitis who are only mildly symptomatic should be managed with supportive care until the result of the urine culture and sensitivity are available. Children with cystitis who are moderately to severely symptomatic should receive an oral antibiotic and supportive care immediately. If the therapy is effective, children with cystitis should show a good clinical response in 2 to 3 days. If the response is satisfactory and the culture shows an organism susceptible to the antibiotic used, complete 5 to 7 days of treatment with the oral antibiotic.

Topics: Acute Disease; Administration, Oral; Adolescent; Age Factors; Amoxicillin; Anti-Bacterial Agents; Anti-Infective Agents, Urinary; Cefotaxime; Ceftriaxone; Cephalosporins; Child; Child, Preschool; Cystitis; Gentamicins; Hospitalization; Humans; Infant; Infant, Newborn; Injections, Intravenous; Outpatients; Pyelonephritis; Time Factors; Urinary Tract Infections

Pharmacodynamic profiling of oral ciprofloxacin dosing for urinary tract infections caused by ceftriaxone-resistant Escherichia coli isolates with ciprofloxacin MIC ≥ 0.25 mg/L.. Urine-specific breakpoints for ciprofloxacin do not exist. However, high urinary concentrations may promote efficacy in isolates with low-level resistance.. Ceftriaxone-resistant E. coli urinary isolates were screened for ciprofloxacin susceptibility. Fifteen representative strains were selected and tested using a dynamic bladder infection model. Oral ciprofloxacin dosing was simulated over 3 days (250 mg daily, 500 mg daily, 250 mg 12 hourly, 500 mg 12 hourly and 750 mg 12 hourly). The model was run for 96 h. Primary endpoint was change in bacterial density at 72 h. Secondary endpoints were follow-up change in bacterial density at 96 h and area-under-bacterial-kill-curve. Bacterial response was related to exposure (AUC0-24/MIC; Cmax/MIC). PTA was determined using Monte-Carlo simulation.. Ninety-three clinical isolates demonstrated a trimodal ciprofloxacin MIC distribution (modal MICs at 0.016, 0.25 and 32 mg/L). Fifteen selected clinical isolates (ciprofloxacin MIC 0.25-512 mg/L) had a broad range of quinolone-resistance genes. Following ciprofloxacin exposure, E. coli ATCC 25922 (MIC 0.008 mg/L) was killed in all dosing experiments. Six isolates (MIC ≥ 16 mg/L) regrew in all experiments. Remaining isolates (MIC 0.25-8 mg/L) regrew variably after an initial period of killing, depending on simulated ciprofloxacin dose. A >95% PTA, using AUC0-24/MIC targets, supported 250 mg 12 hourly for susceptible isolates (MIC ≤ 0.25 mg/L). For isolates with MIC ≤ 1 mg/L, 750 mg 12 hourly promoted 3 log10 kill at the end of treatment (72 h), 1 log10 kill at follow-up (96 h) and 90% maximal activity (AUBKC0-96).. Bladder infection modelling supports oral ciprofloxacin activity against E. coli with low-level resistance (ciprofloxacin MIC ≤ 1 mg/L) when using high dose therapy (750 mg 12 hourly).

Topics: Anti-Bacterial Agents; Bacteria; Ceftriaxone; Ciprofloxacin; Cystitis; Escherichia coli; Humans; Microbial Sensitivity Tests; Urinary Bladder; Urinary Tract Infections

Topics: Adult; Alleles; Anti-Bacterial Agents; Ceftriaxone; China; Cystitis; Drug Resistance, Bacterial; Gonorrhea; Humans; Internationality; Male; Microbial Sensitivity Tests; Neisseria gonorrhoeae; Polymorphism, Genetic; Urethritis

Staphylococcus saprophyticus is resistant to the drugs most often used for the empirical treatment of urinary tract infections (UTI). The adequacy of antimicrobial treatments prescribed for UTI due to S. saprophyticus is not usually questioned. This study described the epidemiology of such infections and assessed the susceptibility of S. saprophyticus to ceftriaxone and amoxicillin-clavulanic acid.. Methicillin-susceptible S. saprophyticus (MSSS) isolated from clinical samples between November 2014 and July 2016 were included. Clinical data were recorded. The minimum inhibitory concentrations (MICs) of amoxicillin-clavulanic acid and ceftriaxone were measured for these MSSS strains and for 17 randomly selected methicillin-susceptible Staphylococcus aureus (MSSA) strains.. Of the S. saprophyticus isolates from urine, 59.5% were associated with a diagnosis of cystitis and 33.3% with pyelonephritis. Sixty percent of S. saprophyticus cystitis cases and 25% of pyelonephritis cases were given an inappropriate antibiotic regimen. The MICs of ceftriaxone ranged from 4 to >32μg/ml for MSSS, and from 1.5 to 4μg/ml for MSSA.. Many UTIs were treated with an empirical antibiotic therapy that was ineffective for S. saprophyticus, revealing that S. saprophyticus is an aetiology that is insufficiently considered in UTI. High MICs for ceftriaxone in MSSS were observed, which raises questions about the use of this antibiotic in UTIs due to S. saprophyticus.

Topics: Adolescent; Adult; Amoxicillin-Potassium Clavulanate Combination; Anti-Bacterial Agents; beta-Lactams; Ceftriaxone; Cystitis; Drug Resistance, Multiple, Bacterial; Empirical Research; Female; Humans; Male; Methicillin-Resistant Staphylococcus aureus; Microbial Sensitivity Tests; Pyelonephritis; Staphylococcus saprophyticus; Urinary Tract Infections; Young Adult

Topics: Abdominal Pain; Ceftriaxone; Cystitis; Cystoscopy; Diagnosis, Differential; Emphysema; Female; Humans; Middle Aged; Tomography, X-Ray Computed; Urinary Bladder; Urinary Catheterization

Topics: Adolescent; Anti-Bacterial Agents; Ceftriaxone; Child; Cystitis; Diagnosis, Differential; Female; Hematuria; Humans; Influenza A Virus, H1N1 Subtype; Influenza, Human; Injections, Intravenous; Kidney; Male; RNA, Viral; Treatment Outcome; Urinalysis

Topics: Anti-Bacterial Agents; Ceftriaxone; Ciprofloxacin; Cystitis; Emphysema; Female; Humans; Incidental Findings; Kidney Failure, Chronic; Klebsiella pneumoniae; Middle Aged; Renal Dialysis; Tomography, X-Ray Computed; Treatment Outcome; Urinary Bladder; Urine