Factors Associated With Dispensing Dosage Delivery Devices

Assessment of the Availability and Accuracy of Dosing Devices Packaged with Oral Liquid Medications in the Ho Municipality of Ghana

INTRODUCTION

Administering the right dose of medications is essential in avoiding potentially life-threatening adverse drug reactions. Industry guidelines for manufacturers of oral, over-the-counter, and liquid medications recommend including dose-delivery devices with packaging to limit dosing inaccuracy. This study describes the prevalence and accuracy of dosing devices packaged with oral liquid medications in the Ho municipality of Ghana.

METHODS

Dosing device accuracy was determined after deviation of the measured volume from the expected volume was evaluated using the United States Pharmacopoeia criteria.

RESULTS

A total of 78.6% of the oral liquid medications were packaged with a dosing device. The most common dosing devices were cups (83.6%), followed by spoons (14.3%), droppers (1.4%), and syringes (0.7%). The volumes measured with cups (5.14 ± 0.52 mL, p = 0.006) and spoons (5.3 ± 0.67 mL, p < 0.001) were significantly different from the desired 5 mL volume; this was dissimilar to the volume measured using syringes (5.01 ± 0.02 mL, p > 0.999). Further, the measured volumes for 38.6% and 72.2% of the cups and spoons, respectively, deviated by more than 15% of 5 mL.

CONCLUSION

Dosing cups and spoons are associated with significant inaccuracy. Yet, manufacturers continually favour them over syringes in packaging for oral liquid medications. This is unacceptable and of considerable concern due to the risk of variations in therapeutic outcomes. Therefore, strict regulatory directives on the inclusion of accurate dosing devices in the packaging of oral liquid medicines are needed to reduce the possibility of medication errors.

Considerations over a Case of Suspected Therapeutic Failure in Pediatric Patients after Switching Valproate Manufacturers

Introduction: Product switching followed by suspected adverse events are common and unsettling for antiepileptic drugs. The objective of this case study was to describe the investigation performed after report of suspected therapeutic failure in pediatric patients following a switch to a different valproate manufacturer and identify strategies concerning medication management for improving therapeutic outcomes. Case description: It was reported that different pediatric patients' condition changed (agitation/ seizures) after refilling the same drug prescription (sodium valproate syrup) from a different manufacturer. Medical staff reported a suspected therapeutic failure and some units of the product batch associated with the problem were seized by the local Post-marketing Surveillance Service for investigation of potential quality deviations. The seized units were evaluated by the State's Surveillance Laboratory, nevertheless, drug potency was found to be 98.7%. Conclusion: We consider that the reported event could be associated with aspects of medication use, i.e. potential dose measurement deviations resulting from remaining of residual liquid in the cup or eventual delay at prescription refilling process and consequential - even though brief - pharmacotherapy discontinuity. Patient education and counseling by pharmacists are essential for preventing drug-related problems and enhancing positive outcomes of pharmacotherapy.

Identification of Errors in Pediatric Prescriptions and Interventions to Prevent Errors: A Survey of Community Pharmacists

OBJECTIVES

Assess the competency of community pharmacists in identifying errors in pediatric prescriptions and to determine how often pharmacists perform interventions known to mitigate the likelihood of error. The study sought to recognize factors that may impact the pharmacist's ability to identify and mediate these errors, and to detect barriers that limit the role of the pharmacist pediatric patient care.

METHODS

A survey was distributed through the University of Illinois at Chicago College of Pharmacy Alumni Network and the Illinois Pharmacists Association email listservs. Pharmacists practicing in a retail setting within the last 5 years were included. Three prescription scenarios for commonly used pediatric medications with corresponding questions were created to assess a pharmacist's ability to identify errors. Demographics pertaining to the pharmacist and the practice site, as well as information about dispensing practices, were collected. Logistic regression was used to identify factors that might impact the pharmacists' ability to identify errors.

RESULTS

One hundred sixty-one respondents began the survey and 138 met inclusion criteria. In 15% to 59% of scenario-based questions, pharmacists did not appropriately identify errors or interventions that would decrease the likelihood of error. Correct identification of doses was associated with total prescription volume in one scenario and with pediatric prescription volume in another scenario. Pharmacists did not consistently label prescriptions for oral liquids in milliliters or dispense oral syringes. Barriers to pharmacist involvement included availability and interest of the caregiver, ability to contact prescriber, and pharmacy staffing.

CONCLUSION

Community pharmacists did not consistently identify medication errors or use interventions known to mitigate error risk.