Spacelabs lifecard cf manual6/7/2023 However, it is unknown whether increases in perioperative heart rate persist beyond the first 72h after non-cardiac surgery. Before non-cardiac surgery, resting heart rate >87 beats minute -1 is associated with myocardial injury and poorer outcome ( 8, 9).Ī prototypical feature of the surgical stress response is loss of cardiac vagal activity, leading to higher resting heart rate ( 10). For every 10 beats minute -1 (bpm) increase in heart rate, mortality increases by 16% in patients with heart failure ( 7). Several prospective studies have identified higher heart rate at discharge from hospital as an independent prognostic predictor of morbidity and mortality in patients treated for acute myocardial infarction ( 3, 4, 5), and heart failure ( 2, 6). Elevated heart rate is a consistent, robust predictor of morbidity and mortality, including in otherwise healthy individuals ( 2). In mammals, there is an inverse semilogarithmic relation between heart rate and life expectancy suggesting that for each species, there is a predetermined number of heart beats in a lifetime ( 1).
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