Prevalence and determinants of intravenous admixture preparation errors: A prospective observational study in a university hospital

Effect of Switching the Histamine-1 Receptor Antagonist Clemastine to Cetirizine in Paclitaxel Premedication Regimens: The H1-Switch Study

PURPOSE

Premedication, including a histamine-1 receptor (H1) antagonist, is recommended to all patients treated with paclitaxel chemotherapy to reduce the incidence of hypersensitivity reactions (HSRs). However, the scientific basis for this premedication is not robust, which provides opportunities for optimization. Substitution of intravenously administered first-generation H1 antagonist for orally administered second-generation H1 antagonist could reduce side effects, and improve efficiency and sustainability. This study investigates the efficacy and safety of substituting intravenous clemastine for oral cetirizine as prophylaxis for paclitaxel-induced HSRs.

METHODS

This single-center, prospective, noninferiority study compares a historic cohort receiving a premedication regimen with intravenous clemastine to a prospective cohort receiving oral cetirizine. Primary end point of the study is HSR grade ≥3. The difference in incidence was calculated together with the 90% CI. We determined that the two-sided 90% CI of HSR grade ≥3 incidence in the oral cetirizine cohort should not be more than 4% higher (ie, the noninferiority margin) compared with the intravenous clemastine cohort.

RESULTS

Two hundred and twelve patients were included in the oral cetirizine cohort (June 2022 and May 2023) and 183 in the intravenous clemastine cohort. HSR grade ≥3 incidence was 1.6% (n = 3) in the intravenous clemastine cohort and 0.5% (n = 1) in the oral cetirizine cohort, resulting in a difference of -1.2% (90% CI, -3.4 to 1.1).

CONCLUSION

Premedication containing oral cetirizine is as safe as premedication containing intravenous clemastine in preventing paclitaxel-induced HSR grade ≥3. These findings could contribute to optimization of care for patients and improve efficiency and sustainability.

Implementation of a national system for best practice delivery of paediatric infusions

BACKGROUND

Standard concentration infusions and 'smart-pumps' are recognised as best practice in the paediatric setting. Implementation rates in European hospitals remain low. Children's Health Ireland (CHI) developed a paediatric 'smart-pump' drug library using standardised concentrations. At time of development, other Irish hospitals continued to use traditional pumps and weight-based paediatric infusions.

AIM

To expand best paediatric infusion practices by nationalising use of the CHI drug library.

SETTING

Tertiary paediatric, maternity and general acute hospitals, and associated transport services in Ireland.

DEVELOPMENT

The CHI drug library was first developed for paediatric intensive care and then adapted over a 10-year period for use in emergency departments, general paediatric wards, neonatal units, adult intensive care and transport services. The original library (42 drug lines, 1 'care-unit') was substantially expanded (223 drug lines, 6 'care-units'). A neonatal sub-library was created.

IMPLEMENTATION

Executive support, dedicated resources and governance structures were secured. Implementation and training packages were developed. Implementation has occurred across CHI, in paediatric and neonatal transport services, 58% (n = 11) of neonatal units, and 23% (n = 6) of paediatric sites.

EVALUATION

A before and after study demonstrated significant reductions in infusion prescribing errors (29.0% versus 8.4%, p < 0.001). Direct observation of infusions (n = 1023) found high compliance rates (98.9%) and low programming errors (1.6%). 100% of nurses (n = 132) surveyed 9 months after general ward implementation considered the drug library had enhanced patient safety.

CONCLUSION

Strategic planning and collaboration can standardise infusion practices. The CHI drug library has been approved as a National Standard of Care, with implementation continuing.

Effect of a Pharmacy-based Centralized Intravenous Admixture Service on the Prevalence of Medication Errors: A Before-and-After Study

OBJECTIVES

Intravenous admixture preparation errors (IAPEs) may lead to patient harm. The primary aim of this study was to assess the effect of a pharmacy-based centralized intravenous admixture service (CIVAS) on IAPEs.

METHODS

We conducted a before-and-after study in 3 clinical wards before CIVAS implementation and in the CIVAS unit 18 months after implementation. Intravenous admixture preparation error data were collected by disguised observation. The primary outcome was the proportion of admixtures with 1 or more IAPEs. Secondary outcomes were the type and potential severity of IAPEs, noncompliance to hygiene procedures, and nursing staff satisfaction with the CIVAS. The primary outcome was analyzed using a multivariable mixed-effects logistic regression model.

RESULTS

One or more IAPEs were identified in 14 of 543 admixtures (2.6%) in the CIVAS unit and in 148 of 282 admixtures (52.5%) in the clinical wards (odds ratio, 0.02; 95% confidence interval, 0.004-0.05). The most common IAPE types were wrong solvent or diluent (n = 95) and wrong volume of infusion fluid (n = 45). No potentially harmful IAPEs occurred in the CIVAS unit as opposed to 22 (7.8%) in the clinical wards. Disinfection procedures were better adhered to in the CIVAS unit. Overall nurse satisfaction with the CIVAS increased from a median of 70 (n = 166) 5 months after intervention to 77 (n = 115) 18 months after intervention ( P < 0.001) on a 100-point scale.

CONCLUSIONS

Centralized intravenous admixture service performed notably better than the clinical wards with regard to IAPEs and noncompliance to hygiene procedures. Nurses were satisfied with the CIVAS. Hence, the implementation of CIVAS is an important strategy to improve medication safety in hospitals.

Evaluation of the importance of mixing during preparation of antibiotic infusions

Background

The mixing step after medication addition to the infusion bag is frequently omitted during the preparation of drug infusions. However, the importance of mixing when preparing antibiotic infusions is still unknown.

Methods

The primary aim of this study was to assess the importance of the mixing step by comparing the concentrations of unmixed antibiotic infusions (cefuroxime, flucloxacillin, meropenem, and vancomycin) with the declared concentration at regular intervals during infusion. The secondary aim was to compare concentrations between preparation sites (hospital pharmacy versus clinical ward). Infusion bags were run through electronic infusion pumps. For cefuroxime, flucloxacillin, and meropenem, samples were collected 1, 15, and 20 min after starting the administration (infusion duration: 30 min). For vancomycin, samples were collected after 1, 60, and 110 min (infusion duration: 120 min). Vancomycin concentrations were measured using the Architect c4000 analyser and other concentrations using a validated UPC²-MS–MS multimethod.

Results

The median concentrations of the four antibiotics were comparable to the declared concentration at all three time points. No significant differences were found between preparation sites.

Conclusions

Spontaneous mixing occurred in the examined antibiotic solutions during normal handling.