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1.
Surg Infect (Larchmt) ; 21(1): 35-42, 2020 Feb.
Article in English | MEDLINE | ID: mdl-31347989

ABSTRACT

Objective: Our aim was to describe our antimicrobial stewardship program and the methodology based on the results in a surgical department. Methods: Our study was a quasi-experimental study conducted from January 1, 2009, through September 30, 2017. The site was the General and Digestive Surgery Department in a public primary referral center, the University Hospital of Getafe (Madrid, Spain). We implemented the antimicrobial stewardship program following a prospective audit and feedback model, with a surgeon incorporated into the manaagement group. We studied the deaths and 30-day re-admission rates, length of stay, prevalence of gram-negative bacilli, meropenem resistance, and days of treatment with meropenem. Results: After three years of the program, we recorded a significant decrease in Pseudomonas aeruginosa prevalence, a significant increase in Klebsiella pneumoniae prevalence, a decrease in meropenem resistance, and a reduction in meropenem days of treatment. Conclusions: Antimicrobial stewardship programs have a desirable effect on patients. In our experience, the program team should be led by a staff from the particular department. When human resources are limited, the sustainability, efficiency, and effectiveness of interventions are feasible only with adequate computer support. Finally, but no less important, the necessary feedback between the prescribers and the team must be based on an ad hoc method such as that provided by statistical control charts, a median chart in our study.


Subject(s)
Antimicrobial Stewardship , Surgery Department, Hospital , Aged , Aged, 80 and over , Antimicrobial Stewardship/methods , Antimicrobial Stewardship/organization & administration , Cross Infection/epidemiology , Cross Infection/prevention & control , Gram-Negative Bacterial Infections/epidemiology , Gram-Negative Bacterial Infections/prevention & control , Hospital Mortality , Hospitals, University/organization & administration , Hospitals, University/statistics & numerical data , Humans , Klebsiella Infections/epidemiology , Klebsiella Infections/prevention & control , Klebsiella pneumoniae , Length of Stay , Middle Aged , Patient Readmission/statistics & numerical data , Program Development , Pseudomonas Infections/epidemiology , Pseudomonas Infections/prevention & control , Spain , Surgery Department, Hospital/organization & administration
3.
Ann Pharmacother ; 39(3): 533-7, 2005 Mar.
Article in English | MEDLINE | ID: mdl-15701769

ABSTRACT

OBJECTIVE: To report a probable interaction between meropenem and valproic acid that resulted in the development of epileptic seizures. CASE SUMMARY: A 21-year-old woman presented to our emergency department because of a new-onset, generalized tonic-clonic seizure and was admitted to the intensive care unit. Treatment with valproic acid 1000 mg as a continuous intravenous infusion over 24 hours was initiated. On day 6, the serum concentration of valproic acid was 52.5 microg/mL. On day 13, treatment with intravenous meropenem 1 g 3 times daily was started. On day 15, when the patient was afebrile, numerous myoclonic episodes occurred involving her arms and face; the serum concentration of valproic acid at that time was 42 mug/mL. The valproic acid dose was increased to 2880 mg. Two days later, a generalized tonic-clonic seizure occurred despite the increased dosage, and the plasma concentration of valproic acid fell to 7 microg/mL. The valproic acid dose was increased the following day to 3600 mg; however, the serum concentrations remained <10 microg/mL. On day 19, based on the results of a blood culture and the suspicion of an interaction between meropenem and valproic acid, meropenem therapy was suspended. The serum concentration of valproic acid was 52.4 microg/mL on day 27. Three days later, the patient was asymptomatic and was discharged. DISCUSSION: Coadministration of valproic acid and other drugs that are metabolized by the hepatic cytochrome P450 isoenzyme system can lead to clinically relevant interactions by induction or inhibition of enzymes in shared metabolic pathways. In view of studies in experimental models, the interaction between carbapenem antibiotics and valproic acid is at least possible. Use of the Naranjo probability scale indicated a probable relationship between acute seizures and a meropenem-valproic acid interaction in this patient. CONCLUSIONS: This case report provides strong evidence for an interaction between valproic acid and meropenem. Clinicians should be aware of this potential interaction that may be associated with a serious adverse effect as the result of the decrease of the valproic acid serum concentrations.


Subject(s)
Anti-Bacterial Agents/adverse effects , Anticonvulsants/adverse effects , Epilepsy/chemically induced , Thienamycins/adverse effects , Valproic Acid/adverse effects , Acute Disease , Adult , Anti-Bacterial Agents/metabolism , Anticonvulsants/blood , Drug Interactions , Female , Humans , Infusions, Intravenous , Meropenem , Seizures/drug therapy , Thienamycins/metabolism , Valproic Acid/blood
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