Chapter 23: Managing Coronary Vascular Disorders

Managing Coronary Vascular Disorders educational video provides an in-depth review of the management of patients with coronary vascular disorders, a critical component of medical-surgical nursing. The discussion begins with the pathophysiology of coronary atherosclerosis, detailing how the inflammatory response, macrophage activity, and lipid deposits lead to the formation of atheromas and subsequent vessel obstruction. Essential risk factors are analyzed, including metabolic syndrome and cholesterol abnormalities, emphasizing the clinical significance of low-density lipoproteins (LDL) and high-density lipoproteins (HDL) in cardiovascular health. The content differentiates between various types of angina pectoris—stable, unstable, intractable, variant (Prinzmetal’s), and silent ischemia—while outlining the nursing process for assessing chest pain and balancing myocardial oxygen supply and demand. Pharmacologic management strategies are explored, covering the mechanisms and nursing implications of nitrates, beta-blockers, calcium channel blockers, and antiplatelet medications like aspirin and clopidogrel. A major focus is placed on Acute Coronary Syndrome (ACS) and Myocardial Infarction (MI), explaining the spectrum of conditions from unstable angina to NSTEMI and STEMI. Viewers will learn about diagnostic criteria, including the interpretation of 12-lead ECG changes such as T-wave inversion, ST-segment elevation, and Q-wave development, alongside the evaluation of cardiac biomarkers like troponin, creatine kinase isoenzymes (CK-MB), and myoglobin. The summary details emergent interventions such as thrombolytic therapy and Percutaneous Coronary Intervention (PCI), including percutaneous transluminal coronary angioplasty (PTCA) and intracoronary stent placement. Surgical revascularization via Coronary Artery Bypass Graft (CABG) is comprehensively covered, explaining the use of internal thoracic artery and saphenous vein grafts, cardiopulmonary bypass (CPB), and off-pump techniques. Finally, the text addresses postoperative nursing management, focusing on hemodynamic monitoring, the prevention of complications like cardiac tamponade, arrhythmias, and postoperative delirium, and the phases of cardiac rehabilitation necessary for long-term recovery.