Perioperative Cardiac Complications and Evidence-Based Strategies for Their Management
Zubair Farooq, Saima Shakil Malik, Muttaib Bhat, Salik Farooq
Abstract
Perioperative cardiac complications remain a major cause of morbidity and mortality after noncardiac surgery. Their significance is growing as surgical populations age with increasing comorbidities. Patients with underlying cardiovascular disease (e.g., coronary artery disease, heart failure, arrhythmias) or other high-risk conditions (advanced age, diabetes, renal or cerebrovascular disease) face higher perioperative cardiac risk. Surgery-related factors (emergency or major vascular operations) and intraoperative hemodynamic perturbations (hypotension, tachycardia, bleeding) further amplify this risk. The pathophysiology involves a perioperative stress response - sympathetic activation, inflammation, hypercoagulability, and oxygen supply-demand imbalance - that can precipitate myocardial ischemia or injury (via either plaque rupture and thrombosis or demand mismatch), as well as arrhythmias or heart failure. Effective care relies on early risk stratification and tailored management. Clinical assessment and functional evaluation, aided by validated risk scores and biomarkers (natriuretic peptides, troponin), help identify high-risk patients. Preoperative optimization of cardiac conditions (angina or heart failure control) and continuation of cardioprotective therapies (statins, beta-blockers, antiplatelets when indicated) are important. Intraoperative strategies include vigilant monitoring and maintenance of hemodynamic stability, while postoperative surveillance (with telemetry and biomarker checks) allows prompt detection of ischemia or arrhythmias. Timely treatment of any cardiac event, together with an integrated multidisciplinary approach, is essential to mitigate complications and improve outcomes.