Researchers have developed a mobile app that alerts people trained in Cardiopulmonary Resuscitation (CPR) when someone needs their help nearby.

In a study reported by the researchers, the app has increased the rates of CPR performed on people undergoing cardiac arrest by 14% points without a doubt.

The study was concluded by a research team under Dr. Jacob Hollenberg, from the division of cardiology at South Health center at the Karolinska Principle in Stockholm.

In the study, about 9,800 adults trained in CPR in Stockholm provided their cell phone numbers to help who is at risk of cardiac arrest nearby.

Whenever the country's emergency number was called and a suspected cardiac arrest was reported, a mobile alert system was ready to be activated on order to connect these volunteers with the people who need assistance.

The CPR-trained volunteers who were within 500 meters of the patient were alerted via automatic voice calls and text messages. The volunteers also received Web links that showed the patient's location. There were 306 events in which a possible cardiac arrest was called in during the study.

The researchers looked at what happened in 361 other events in which the volunteers were not alerted when a possible cardiac arrest was called in.

The researchers found that when the nearby volunteers were notified through the system, 62% of the patients received CPR, compared with 48% who received CPR when the volunteers were not contacted.

However, the mobile system didn't account for significant survival rates of the patients. According to the researchers, the study needs to be conducted using a much larger patient population to assess the impact of the system on survival rates accurately.