Ischemic Heart Disease (IHD), also widely known as Coronary Artery Disease (CAD), is a major cardiovascular condition occurring when narrow or hardened coronary arteries restrict oxygen-rich blood flow to the myocardium (heart muscle). Under the clinical supervision of Dr. Sai Sekhar Pyla (MD General Medicine, Diabetologist) at Trinetra Medicals, Muralinagar, Visakhapatnam, patients receive comprehensive cardiac risk stratification, medical management, and preventative vascular care.
Causes & Risk Factors
- Coronary Atherosclerosis: Accumulation of fatty cholesterol plaques causing arterial luminal narrowing.
- Uncontrolled Diabetes Mellitus: Chronically elevated blood sugar accelerates vascular inflammation and micro/macrovascular damage.
- Systemic Hypertension & Dyslipidemia: High blood pressure strains arterial walls while high LDL cholesterol feeds plaque buildup.
- Tobacco Use & Physical Inactivity: Cigarette smoking causes acute endothelial dysfunction and arterial spasm.
- Family History & Metabolic Syndrome: Genetic predisposition, abdominal obesity, and high serum triglycerides.
Symptoms & Warning Signs
- Angina Pectoris: Squeezing, pressure-like, or burning chest tightness radiating to the left arm, neck, jaw, or epigastrium.
- Exertional Dyspnea: Shortness of breath triggered by mild physical activity or climbing stairs.
- Atypical Symptoms in Diabetics: "Silent ischemia" where diabetic neuropathy masks classical chest pain; patients may only present with unexplained diaphoresis (sweating), profound fatigue, or nausea.
- Palpitations & Lightheadedness: Irregular heart rhythm or feeling faint during exertion.
Diagnostic Evaluation
- 12-Lead Electrocardiogram (ECG): Identifies ischemic ST-T wave changes, bundle branch blocks, or previous silent infarcts.
- 2D Echocardiogram (ECHO): Evaluates left ventricular ejection fraction (LVEF), wall motion abnormalities, and valvular integrity.
- Cardiac Biomarkers: Serum High-Sensitivity Troponin T/I and CK-MB levels during acute symptom presentation.
- Stress Testing & Coronary Angiography: Treadmill Test (TMT) or CT Coronary Angioplasty for precise luminal mapping.
Treatment & Clinical Management Protocol
- Antiplatelet & Antithrombotic Therapy: Low-dose Aspirin and Clopidogrel to prevent intracoronary thrombus formation.
- Lipid-Lowering Statin Therapy: High-intensity Statins (Atorvastatin / Rosuvastatin) to stabilize atherosclerotic plaques and maintain target LDL < 70 mg/dL.
- Hemodynamic Optimization: Beta-blockers (Atenolol/Metoprolol) and ACE Inhibitors/ARBs to lower myocardial oxygen demand and control hypertension.
- Nitrate Therapy: Sublingual Nitroglycerin for acute angina symptom relief.
Complications & Prevention
Untreated CAD can progress to acute myocardial infarction (heart attack), heart failure, and life-threatening arrhythmias. Daily brisk walking, low-sodium Mediterranean diet, smoking cessation, and strict HbA1c/BP control are critical for long-term survival.
