We can establish a precise diagnosis of heart rhythm problems with the help of small and powerful devices that patients can carry on their person for 24-96 hours (Holter monitoring or ’R’ test system). The device has electrodes that are placed on the patient’s chest. If the cardiac problems are more infrequent, we may also use implantable monitors (Reveal Plus), which are more discreet than pacemakers and allow a precise monitoring of problems over a 1-year period. A solid partnership with the major university centres in Switzerland ensures the quality of these treatments.