Table 1.
Classification of the results of the literature review.
| Type of system/application | Articles |
| Vital signs monitoring system | 55 |
| ECG (electrocardiography)/cardiac signal detection/classification algorithms | 44 |
| Heart monitoring system | 37 |
| ECG/heart monitoring system trial/evaluation | 28 |
| Remote heart monitoring system | 25 |
| Heart monitoring system with alerts | 17 |
| Cardiac rehabilitation mobile system | 16 |
| ECG data transmission | 14 |
| Blood pressure measurement/monitor system | 13 |
| Remote management/monitoring of implanted pacemakers/cardiac devices | 11 |
| Teleconsultation system | 10 |
| Remote and local heart monitoring system | 8 |
| Exercising/sports related heart monitoring system | 7 |
| Innovative heart rate monitor | 7 |
| Arrhythmia detection system | 7 |
| Sensors evaluation/state of the art | 6 |
| Surveys/states of the art of cardiology systems | 5 |
| Heart rate & blood pressure monitoring system | 5 |
| Remote heart monitoring system with alerts | 5 |
| Atrial fibrillation detection system | 5 |
| Heart failure detection system | 5 |
| Phonocardiography mobile system | 5 |
| Remote and local heart monitoring system with alerts | 4 |
| Breath monitoring system | 4 |
| ECG data compression technique | 4 |
| Automatic music selector to maintain a target heart rate | 4 |
| Alerts and location of heart attacks | 4 |
| CPR instructions through mobile phone trial | 4 |
| CPR instructions/reminder through mobile phone | 4 |
| Applications for promotion of healthy behaviors | 4 |
| System for measuring/reducing stress | 3 |
| Personal lifestyle and health management system | 3 |
| Fetal heart monitoring system | 3 |
| ECG data encryption/authentication/privacy | 3 |
| Cardiac rehabilitation mobile system trial | 3 |
| Exercising/sports related heart monitoring system evaluation | 3 |
| Mobile medical applications for chronic diseases | 2 |
| Pocket-size images interpretation | 2 |
| First aid/resuscitation app evaluation | 2 |
| Apps for hypertension in smartphones | 2 |
| Emotional states detection through measuring heart rate differences | 2 |
| Weight control in high-risk heart failure population | 2 |
| Medications management | 2 |
| Telemetry-based system for monitoring rats’ vital signs | 1 |
| Heart attack self-test app | 1 |
| Trial for comparing follow-up of hypertensive patients | 1 |
| Study about the correlation music-heart rate variability | 1 |
| App for improving basic life support (BLS) | 1 |
| Non-invasive tissue classifier | 1 |
| Share of vital signs in a social network | 1 |