Abstract
A cardiac pacemaker (PM) is a medical device that uses electrical impulses delivered by electrodes to contract the heart muscle and regulate the heart rate. The main purpose of this device is to maintain a proper heart rate. Pacemakers are essential not only for the treatment of arrhythmias and heart failure, but also for the treatment of cardiovascular diseases. Therefore, this review hypothesizes that cardiovascular disease patients receiving treatment 'with or without pacemaker may increase or decrease the risk of mortality. The objectives of this study were to analyse the pacemaker evidence to conduct a systematic review to determine the clinical efficacy of pacemaker implantation in high-risk patients requiring surgery with outcomes with reduced of risk mortality.
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