PROMBot-HSM-FA: Protocol for a Feasibility Study of a Chatbot Platform to Collect Patient-reported Outcomes After AF Ablation

Inclusion Criteria: * age 18 years or older; * documented diagnosis of paroxysmal or persistent AF based on clinical assessment and coded according to the International Classification of Diseases, 11th Revision; * undergone catheter ablation for AF at Hospital de Santa Marta during the study recruitment period; * able to use the PROMBot-FA chatbot independently or with caregiver assistance, defined as Portuguese literacy sufficient to understand instructions and ability to operate a smartphone; * clinically stable at discharge with no acute post-procedural complications precluding participation; and * provision of written informed consent. Exclusion Criteria: * severe cognitive impairment preventing comprehension of study procedures, such as moderate-to-severe dementia or other neurological conditions limiting capacity to consent; * severe uncorrected visual impairment or motor disability preventing smartphone operation even with caregiver support; * explicit refusal to use digital technology or unwillingness to share health data required for the study; * clinical or contextual conditions rendering 3-month follow-up unfeasible, including anticipated relocation outside the hospital catchment area or concurrent participation in another interventional study with overlapping endpoints; or * life expectancy less than 6 months.