Coronary Artery Disease III: Clinical Manifestations

Chest pain in CAD, called angina pectoris, feels like pressure, squeezing, tightness, or burning. The discomfort often radiates to the shoulders, arms, neck, jaw, or back. Additional symptoms include cold sweats, dizziness, nausea, indigestion, neck pain, dyspnea, and weakness. Early recognition helps guide treatment decisions.

Women with CAD often experience middle back pain, unexplained shortness of breath, jaw discomfort, chest pressure, tightness, burning sensations, and stomach pain. These atypical presentations can delay diagnosis, making awareness of gender-specific symptoms critical for early intervention and improved patient outcomes.

A myocardial infarction occurs when a coronary artery becomes completely blocked, causing heart muscle necrosis. Symptoms include intense chest pain, dyspnea, diaphoresis, nausea, fatigue, and palpitations. Unlike angina, MI pain is not relieved by rest or nitroglycerin and requires immediate medical intervention.

Chronic CAD can lead to heart failure, characterized by dyspnea, especially during exertion or when lying down, fatigue, nocturnal cough due to pulmonary congestion, and rapid swelling of the legs, ankles, and feet from fluid retention. Weight gain may also occur unexpectedly from fluid accumulation.

CAD can cause various arrhythmias ranging from benign to life-threatening. These include atrial fibrillation, which may result in stroke or heart failure; ventricular tachycardia, which can deteriorate into ventricular fibrillation; and ventricular fibrillation, which causes chaotic electrical activity leading to cardiac arrest if untreated.

Silent ischemia occurs when objective evidence of ischemia exists without typical chest pain symptoms. This condition is more common in diabetics and can be detected through electrocardiograms or stress tests. Early detection is important because patients may not recognize they have CAD without symptoms.

Sudden cardiac death is a catastrophic CAD manifestation, often resulting from acute myocardial infarction or severe arrhythmia. It involves sudden loss of consciousness and requires immediate resuscitation efforts. This emergency demands rapid recognition and intervention to prevent fatality and preserve brain function.