How to prevent medication errors: a multidimensional scaling study to investigate the distinguishability between self-injection platform device variants

Understanding patient preferences for handheld autoinjectors versus wearable large-volume injectors

OBJECTIVE

While interest in the use of wearable large-volume injectors for subcutaneous drug delivery is increasing, it remains unclear whether and under what conditions these emerging dosing options are preferred over more frequent but shorter administration of smaller doses using handheld autoinjectors. Therefore, the objective of this study was to examine the characteristics of patients diagnosed with cancer, diabetes, inflammatory and cardiovascular diseases, and treatment attributes that determine device preferences.

METHODS

Based on a cross-sectional online choice experiment, 191 participants expressed their preferences without being physically exposed to the devices or performing injections. Logistic hierarchical regression models were used to assess which patient characteristics, and how changes in treatment attributes, drive device preferences.

RESULTS

Participant quality of life reduced the likelihood of preferring wearable large-volume injectors to handheld autoinjectors. Moreover, reducing injection frequency from biweekly to monthly to quarterly injections, and shortening injection duration from 33 to 8 min, significantly increased the likelihood of patients preferring large-volume injectors to autoinjectors (p < 0.001).

CONCLUSION

The study revealed patient quality of life as predictor of device preference and identified critical inflection points in injection duration and injection frequency, at which patient preferences shift from handheld autoinjectors to wearable large-volume injectors.

The current paradigm for biologic initiation: a mixed-methods exploration of practices, unmet needs, and innovation opportunities in self-injection training

BACKGROUND

Self-injection, particularly of biologics, has become a mainstay of chronic disease management. Despite labeling requirement for healthcare provider (HCP) training, current injection initiation experiences have been shown to be suboptimal. This study characterizes gaps in training and support during initiation and identifies rationales to inform solutions.

METHODS

We enrolled HCPs (n = 18) performing routine biologic initiation and patients (n = 24) currently self-injecting biologics. Participants completed activities through an online, remote ethnography tool. We conducted two focus groups with biologic-naïve patients (n = 5). Data was analyzed using thematic frameworks, Q methodology, and quantitative assessments.

RESULTS

Our results suggest considerable gaps exist. Analysis revealed five common themes that could explain these gaps: 1) minimal biologic-specific professional instruction is provided to HCPs; 2) nuanced injection use-steps are not universally understood; 3) no one stakeholder currently 'owns' training; 4) support offered by HCPs and manufacturers is perceived as biased; and 5) emotional burden is not accounted for.

CONCLUSIONS

Our study suggests optimizing several elements to facilitate successful initiations, including structured sessions, improved HCP injection device knowledge, demo-device practice, and focus on both emotional and mechanical aspects. Aligning these factors has potential to increase patient confidence, reduce burden on HCPs, and improve probability of success on therapy.

User-Centric Approach to Specifying Technical Attributes of Drug Delivery Devices: Empirical Study of Autoinjector-Cap Removal Forces

PURPOSE

The subcutaneous delivery of biologics using pre-filled autoinjector devices continues to attract broad scholarly interests. However, research still lacks a detailed understanding of user perceptions as the basis for specifying the clinically relevant technical attributes of a device, such as the cap-removal force. Therefore, this article studies the ability of users to remove the autoinjector cap, as well as the effects of the cap-removal force and user characteristics on the perceived ease of decapping.

PATIENTS AND METHODS

Forty-two participants among patients, caregivers, and healthcare professionals removed the protective cap using non-functional devices with different target cap-removal forces between 25 N and 55 N. Data were collected on the ability of the users to effectively decap the device and their perceived ease of decapping. Linear regression was then applied to quantify the impact of the decapping force and patient characteristics on the perceived ease of decapping.

RESULTS

The participants of the study effectively decapped all autoinjector devices irrespective of age, sex, and dexterity impairments. Moreover, the study reveals that the perceived ease of decapping decreases significantly with increasing decapping force and participants' dexterity impairments.

CONCLUSION

The study provides initial empirical evidence on the ability of users to decap autoinjector devices and shows how increasing the cap-removal force and dexterity impairments reduce the perceived ease of decapping.