C-reactive protein-guided antibiotic prescribing for COPD exacerbations: a qualitative evaluation

Background Antibiotics are prescribed to >70% of patients presenting in primary care with an acute exacerbation of chronic obstructive pulmonary disease (AECOPD). The PACE randomised controlled trial found that a C-reactive protein point-of-care test (CRP-POCT) management strategy for AECOPD in primary care resulted in a 20% reduction in patient-reported antibiotic consumption over 4 weeks. Aim To understand perceptions of the value of CRP-POCT for guiding antibiotic prescribing for AECOPD; explore possible mechanisms, mediators. and pathways to effects; and identify potential barriers and facilitators to implementation from the perspectives of patients and clinicians. Design and setting Qualitative process evaluation in UK general practices. Method Semi structured telephone interviews with 20 patients presenting with an AECOPD and 20 primary care staff, purposively sampled from the PACE study. Interviews were audio-recorded, transcribed, and analysed using framework analysis. Results Patients and clinicians felt that CRP-POCT was useful in guiding clinicians' antibiotic prescribing decisions for AECOPD, and were positive about introduction of the test in routine care. The CRP-POCT enhanced clinician confidence in antibiotic prescribing decisions, reduced decisional ambiguity. and facilitated communication with patients. Seine clinicians thought the CRP-POCT should be routinely used in consultations for AECOPD; others favoured use only when there was decisional uncertainty. CRP-POCT cartridge preparation time and cost were potential barriers to implementation. Conclusion CRP-POCT guided antibiotic prescribing for AECOPD had high acceptability, but commissioning arrangements and further simplification of the CRP-POCT need attention to facilitate implementation in routine practice.