DUBLIN--(BUSINESS WIRE)--Research and Markets has announced the addition of the "Cardiology Defibrillators Devices Market Analysis: By Type of Surgical Approach; By Type of Device (Cardiovascular Surgical Devices,Interventional Devices) & By Geography - Forecast (2015 - 2020)" report to their offering. The irregular and abnormal beating of the heart disturbs the pattern and causes fluctuation of the rhythm. This variability in the heart rhythms occurs suddenly and unexpectedly which can hav