Table 3.

Definition of the app-related topics, specifically for a cardiology context.

Topic	Description
Atlases	Dedicated teaching, learning, and reference works, for example, anatomy atlases
Blood pressure	Apps containing content and functions that can help with blood pressure management, for example
Conferences	Apps related to organizing one’s conference visit or obtaining information about a conference
ECGa	Contents and functions relating to ECG
Nutrition	Nutritional content, for example, on diets (including nutrients) and nutrition-dependent health aspects or disorders
Fitness	Apps that promote fitness content and functions
Women	Apps specifically targeting women
Health data	Apps for the recording, monitoring, and analyzing of health-related data (eg, vital signs)
Communication	Apps with a communicative character, for example, for the exchange of information between medical staff and patients, within patient groups, and online communities
Medication	Medication-related apps
Complementary medicine	Apps that adopt an alternative medical approach (eg, acupuncture, acupressure, meditation, complementary medicine)
Neurology	Apps containing neurology-related content and functionalities
Emergencies	Apps for emergency medical or first aid use
Medical practice or hospital	Apps to be used in medical practice or hospital settings
Psyche	Apps covering psychological and psychiatric issues
Sleep	Apps to be used in sleep-related contexts
Metabolism	Apps specifically designed for use in managing metabolic disorders (eg, diabetes or other metabolic diseases)
Animals	Apps that have a cardiology reference but are intended for use in the field of veterinary medicine

^aECG: electrocardiography.