Yes, the Enso Bioresonance Sweeper is safe to use for people that have Arrythmias and Tachycardias. During operation, the frequency based device does not interfere with the functioning of the heart. Not only is it safe, It is possible to correct these conditions with the application of the Sweeper. These heart conditions are symptomatic and not root cause. Consequently, we offer a bioresonance diagnostic lab test to verify the pathologies present and possible root causes. The Enso Sweeper can help reverse these conditions both directly with cardiovascular programs and permanently by eliminating the parasites and toxins that might be causing the imbalances. For example, flukes in the liver can leave the liver sluggish, overproducing cholesterol to protect from the infection. The liver is unable to metabolize fat efficiently and body fat increases. Artherosclerosis may develop in the arteries and this can cause arrythmias, tachycardias and other heart conditions. Another situation is where Infections in and around the heart such as staphylococcus can affect electrical heart function directly and not because of the narrowing of the arteries. In both cases, the Sweeper can help as part of a useful diagnosis and detoxification of the body.