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1.
Int J Clin Pharm ; 33(1): 25-32, 2011 Feb.
Article in English | MEDLINE | ID: mdl-21365390

ABSTRACT

OBJECTIVE: To generate, validate and establish a web-based individualised opioid conversion calculator at the University Hospital Basel and to analyse its value and significance. SETTING: A 700-bed university hospital. METHOD: Published data were screened by a Medline search using the keywords: opioid, rotation, switching, potency and dose ratio. Based on this data, the criteria for the conversion calculator were defined. A prospective process validation was performed prior to the approval. Five months after the introduction of the tool, an online survey was performed in order to evaluate its acceptance by users. In the last step, a manual calculation using a written table was compared with the calculator in a cross-over trial with 72 participants in order to assess the findings of the survey. RESULTS: The opioid conversion calculator could be generated for 24 combinations of 6 opioids for 5 different routes of administration. The validation of the calculator was performed successfully without discovering any major or critical defects. The proportion of correct answers increased from 68% using the table to 81% using the calculator (P < 0.001), the median time necessary to answer the ten questions was 8.9 min using the table and 4.8 min using the calculator. CONCLUSION: A web-based opioid conversion calculator was planned, generated, validated and established at the hospital. Based on the results of the online survey and the results of our cross-over trial we conclude that the tool saves time compared to manual calculation and may contribute to patient safety by avoiding calculation errors. With this tool we contribute to the optimisation of processes in hospital and patient safety.


Subject(s)
Analgesia/methods , Analgesics, Opioid/administration & dosage , Drug Dosage Calculations , Pain/drug therapy , Analgesics, Opioid/pharmacokinetics , Analgesics, Opioid/therapeutic use , Computers , Cross-Over Studies , Data Collection , Drug-Related Side Effects and Adverse Reactions , Humans , Internet , Software , Therapeutic Equivalency , Time Factors
2.
J Antimicrob Chemother ; 64(1): 188-99, 2009 Jul.
Article in English | MEDLINE | ID: mdl-19401304

ABSTRACT

OBJECTIVES: To evaluate outcomes following implementation of a checklist with criteria for switching from intravenous (iv) to oral antibiotics on unselected patients on two general medical wards. METHODS: During a 12 month intervention study, a printed checklist of criteria for switching on the third day of iv treatment was placed in the medical charts. The decision to switch was left to the discretion of the attending physician. Outcome parameters of a 4 month control phase before intervention were compared with the equivalent 4 month period during the intervention phase to control for seasonal confounding (before-after study; April to July of 2006 and 2007, respectively): 250 episodes (215 patients) during the intervention period were compared with the control group of 176 episodes (162 patients). The main outcome measure was the duration of iv therapy. Additionally, safety, adherence to the checklist, reasons against switching patients and antibiotic cost were analysed during the whole year of the intervention (n = 698 episodes). RESULTS: In 38% (246/646) of episodes of continued iv antibiotic therapy, patients met all criteria for switching to oral antibiotics on the third day, and 151/246 (61.4%) were switched. The number of days of iv antibiotic treatment were reduced by 19% (95% confidence interval 9%-29%, P = 0.001; 6.0-5.0 days in median) with no increase in complications. The main reasons against switching were persisting fever (41%, n = 187) and absence of clinical improvement (41%, n = 185). CONCLUSIONS: On general medical wards, a checklist with bedside criteria for switching to oral antibiotics can shorten the duration of iv therapy without any negative effect on treatment outcome. The criteria were successfully applied to all patients on the wards, independently of the indication (empirical or directed treatment), the type of (presumed) infection, the underlying disease or the group of antibiotics being used.


Subject(s)
Anti-Bacterial Agents/administration & dosage , Bacterial Infections/drug therapy , Administration, Oral , Aged , Anti-Bacterial Agents/adverse effects , Anti-Bacterial Agents/economics , Female , Humans , Injections, Intravenous , Male , Middle Aged , Time Factors , Treatment Outcome
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