Saccharomyces cerevisiae fungemias: how heterogenous is their management?

Saccharomyces cerevisiae is a yeast used mainly as a probiotic for prevention or treatment of diarrhoea. However, the prevalence of S. cerevisiae fungemia has risen over the past years, notably among patients with predisposing factors. This retrospective study presents 21 cases of S. cerevisiae fungemia at the University Hospital of Liege from 2000 to 2022, their clinical relevance and therapeutic management. Each patient presented one or several risk factors prior to fungemia. The isolated strains presented high minimal inhibitory concentration for fluconazole, while MICs for amphotericin B, voriconazole and echinocandins were low. Some patients received antifungal therapy, while for others only central and peripheral lines were removed and probiotics discontinued. The MICs obtained for voriconazole and echinocandins makes them an alternative treatment to fluconazole and amphotericin B as reported in other studies. Since a S. cerevisiae fungemia can induce the same complications as candidemia, follow-up blood cultures should be collected and metastatic foci should be looked for. This study showed an important discrepancy in the clinical management of infections due to S. cerevisiae and highlights the need for guidelines.

Preventability analysis of adverse drug reactions detected in two internal medicine departments in Romania.

In order to improve patient safety, systematic analysis of common and repetitive patterns of preventable adverse drug reactions (pADRs) in the clinical setting should be performed regularly in order to propose adequate prevention strategies. Our aim is to evaluate the preventability of all ADRs collected in a drug information research center database, by spontaneous reporting and clinical surveillance in two internal medicine departments. One reviewer systematically reevaluated all the cases stored in the database. ADRs were deemed preventable if they were due to: a contraindication, an inadequate dose, a drug interaction, an inappropriate prescribing decision for the patient's condition, inadequate monitoring, self-medication, or non-adherence to therapy. Out of 251 ADRs evaluated, 103 (41 %) were considered preventable. Out of the total pADRs, 86.4 % were serious. The most frequent adverse outcomes affected the gastrointestinal system (21.4 %), followed by the renal (11.6 %), metabolic (10.7 %), vascular (10.7 %) and hepatic (6.8 %) systems. Acenocoumarol (28 %), diclofenac (12.6 %), digoxin and furosemide accounted for more than 50 % of all preventable reports. One of up to three factors was involved in the preventability of the analyzed reports. Drug-drug interactions were the cause of 49.5 % of the pADRs. Inappropriate dose accounted for 17.5 % reports out of the total pADRs, inappropriate monitoring for 9.7 % reports, history of allergy to drug or drug class for 5.8 % reports and administration of a contraindicated drug for 4.8 % reports. Identifying prevalent pADRs in this study indicates a clear target for prevention strategies: drug prescription, with a special emphasis on drug interactions.

Adverse drug reactions detected by stimulated spontaneous reporting in an internal medicine department in Romania.

BACKGROUND: It is generally recognized that adverse drug reactions (ADRs) represent a major concern of health systems in terms of early recognition, proper management and prevention. The aims of this study were to identify the most frequent ADRs recognized by the attending physicians, study their nature and target these ADRs in order to take future preventive measures. METHODS: A prospective study was conducted over a 12-month period in an internal medicine department using stimulated spontaneous reporting for identifying ADRs. All ADRs reported by physicians were followed up to the patient's discharge and evaluated by an independent group of pharmacologists. Causality, severity and preventability were assessed. RESULTS: Of the 1854 admissions, 112 ADRs in 94 patients (5.07%) were validated from the total of 118 ADRs reported. The overall incidence of serious ADRs in the hospitalized patients was 4.7%. According to the MedDRA classification, the most frequent ADRs affected the gastrointestinal system, followed by metabolic and vascular systems. The drugs most frequently involved were cardiovascular agents, anticoagulants and NSAIDs. Drug interactions were responsible for 25.9% of ADRs. According to the selected preventability scale, 40.18% ADRs were classified as 'potentially preventable' and 9.82% 'definitely preventable'. Most of the ADRs were 'type A' reactions and as such could have been avoided simply by adjusting the doses or by avoiding drug interactions. CONCLUSIONS: Serious ADRs in hospitalized patients are common and often preventable. Preventing strategies should target drug prescription. Adequate training regarding pharmacology and optimization of drug therapy might help reduce ADRs' morbidity and mortality.