Close up shot of heart rate monitor at cardiology department in French hospital

close up shot heart rate monitor cardiology department french hospital surgery stent placement vascular stent frequency graph electrocardiogram rate heart medical monitor ekg patient hospital health medicine surgery background technology illustration sign healthcare life care blood heartbeat pulse horizontal cardiogram monitoring operating vital doctor machine temperature blood pressure heart rate modern medicine telemetry vital signs emergency medicine cardiac health clinical accuracy clinical care critical care lifesaving device patient recovery