Patient experience of informed consent for diagnostic coronary angiogram and follow-on treatments

Abstract

Background/Aims Coronary angiography requires a complex informed consent process as a legal and ethical requirement before treatment. This process may allow percutaneous coronary intervention to be completed as a continuation of a coronary angiography. Patients routinely consent to both interventions, but over one-quarter will only receive the diagnostic angiogram. This study explored views and understandings of the informed consent process, and associations with demographic characteristics, among patients who consented to coronary angiography and same-setting percutaneous coronary intervention, but were found to be ineligible for the latter. Methods A descriptive cross-sectional survey design was used to explore patients' views. A total of 62 participants (73% male, mean age 68.4 years) completed a 36-item survey the day after undergoing diagnostic coronary angiography. Results Female participants reported greater difficulty in recalling treatment information (P<0.03), found discussions about alternative treatments more confusing (P<0.02), and the disclosure of comprehensive risk information more of a deterrent to consent for treatment (P<0.02) compared to men. Higher levels of education were associated with greater preference for information and involvement in treatment decisions (P<0.002). Conclusions Patients who give informed consent for diagnostic coronary angiography with or without a same-setting percutaneous coronary intervention need clear comprehensive information regarding alternative options. By recognising the patient's need for information, nurses can provide an individualised explanation and reinforcement of the information provided during informed consent.