Technological and medical development increase the safety of heart surgeries. They are more common among seniors also. Despite the surgical safety, the postoperative prophylaxis is crucial. There are many postoperative complications such as respiratory failure, excessive bleeding and heart rhythm disturbances (arrhythmias). To avoid that, the professional team monitors the patients vital signs and provides advances physical therapy. One of the element of po-op rehabilitation process is using our chest belt OT-16.