These sources provide an educational overview of Acute Coronary Syndrome (ACS), focusing on the diagnosis, pathophysiology, and treatment of myocardial infarctions. They detail the progression from stable angina to life-threatening occlusions, emphasizing that time is muscle when addressing cardiac tissue death. Diagnostic markers like troponin levels and ECG changes are highlighted alongside critical nursing interventions, such as administering oxygen, positioning patients upright, and monitoring vital signs. Treatment options range from medications like nitroglycerin and morphine to surgical procedures including percutaneous coronary intervention (PCI) and coronary artery bypass grafting (CABG). Additionally, the texts address long-term management through lifestyle modifications, cardiac rehab, and the importance of recognizing atypical symptoms in women and older adults. Post-operative care for open-heart surgery is also explored, noting risks like dysrhythmias and the necessity of anticoagulation therapy for complications such as atrial fibrillation.