In some cases, certain phenomena can suddenly occur once in a while which are caused by cardiac arrhythmia. This could be, say, a sudden unexplained loss of consciousness (so-called syncope), vertigo, a racing heart, or a sudden loss of energy. The common cardiological diagnosis frequently fails to find the crucial piece of evidence. In this case, there is the possibility of implanting a small data-chip under your skin which can record your noticeably fast or slow heart beat for two to three years. The so-called loop recorder is implanted under your skin near the heart during a short hospital stay. The data is regularly extracted — usually every six months or after an attack. Up to 60% of cases of an unexplained loss of consciousness can be explained and treated using this technology.