The Procedural Work For Cardiac Diseases

Types of Angina Pectoris:

1.  Stable Angina (Chronic Stable Angina): In this type, over time, the patient adapts to the condition, allowing for the development of collateral circulation. Painful episodes occur less frequently and are usually mild. Medical treatment typically provides complete relief to the patient.

2.  Unstable Angina (Pre-infarction Syndrome): In this type, pain occurs suddenly during rest or with minimal exertion. The episodes are frequent, intense, and last longer than stable angina, sometimes extending beyond 20 minutes. The pain does not subside with rest or usual angina medications (e.g., nitroglycerin).

3.  Recurrent Angina: In this type, the patient experiences multiple attacks per day and may take several nitroglycerin tablets one after another (sometimes up to 10-20 tablets per day). This condition may persist for several weeks. It may indicate either significant damage to all three main coronary arteries or could be due to the patient’s anxious or nervous psychological state.

4.  Twisted or "Masked" Angina: These cases are particularly important as they occur in patients who have other medical conditions unrelated to coronary insufficiency. The pain in these cases often radiates and manifests at specific times, pointing to the site and cause of the underlying condition (e.g., cervical disc issues or gastrointestinal disorders like peptic ulcers). It is crucial to determine whether these conditions alone are causing the symptoms or if they coexist with true coronary insufficiency, which may worsen the condition.

Signs and Symptoms of Angina Pectoris:

·   Pain Characteristics:
The pain typically appears in the front of the chest, behind the sternum, and may radiate upward to the upper sternum, neck, or lower jaw. The left arm often experiences pain, typically on the inner side near the trunk, or in the form of a band around the other fingers of the left hand.

·   Nature of Pain:
The pain is often described as crushing, squeezing, or as a vice tightening around the chest. It may also present as pressure, heaviness, or an internal burning sensation.

·   Other Symptoms:
The individual may appear pale, sweat profusely, and experience a rapid heartbeat with arrhythmias.

Diagnostic Methods for Angina Pectoris:

1.  Medical History:
The patient is asked to provide a detailed history of the episodes, including whether the pain is associated with physical exertion, stress, or heavy meals. The pain's characteristics (location, duration, radiation) and any relief factors are documented.

2.  Chest X-ray:
This helps detect any heart enlargement or pulmonary congestion.

3.  Coronary Angiography:
This procedure is used for diagnosis and to identify patients who may require coronary artery bypass surgery (CABG).

4.  Electrocardiogram (ECG):
In a standard ECG, ST segment depression and T-wave inversion are typical signs of angina.

5.  Stress ECG:
The patient undergoes physical exertion (e.g., on a treadmill or stationary bike), which induces increased heart rate, blood pressure, and heart work. If angina or ECG changes occur, it may confirm coronary artery disease.

Medical Treatment for Angina Pectoris:

1.  Aspirin:
Aspirin prevents platelet aggregation, reducing the risk of clot formation and the incidence of heart attacks and death in patients with angina.

2.  Heparin:
Heparin is given to prevent clot formation. The typical dose is 5000 units intravenously every 4 to 6 hours. ECG monitoring continues to assess the drug’s effectiveness, and PTT (Partial Thromboplastin Time) or PT (Prothrombin Time) tests are performed after two hours of administration and then daily.

3.  Nitroglycerin (Angina Pain Relief):
Nitroglycerin dilates coronary arteries, improving blood flow to the heart. These and other similar medications also help develop collateral circulation (secondary blood flow pathways) in areas with poor perfusion, reducing heart strain and oxygen demand.

4.  Beta-Adrenergic Blockers:
These medications reduce heart rate, blood pressure, and myocardial contractions, lowering the heart's oxygen demands. They also help prevent arrhythmias and decrease the risk of heart attacks and sudden death. An example is Tenormin.

5.  Calcium Channel Blockers:
These drugs reduce myocardial contractions and relax smooth muscle in the coronary and peripheral vasculature, helping control chest pain in unstable angina. An example is Diltiazem.

6.  Surgical Treatment (Coronary Artery Bypass Grafting - CABG):
In this procedure, a vein (usually from the patient's leg) is removed and grafted as a bypass between the aorta and a narrowed coronary artery. This provides a new path for blood to reach the heart muscle, bypassing the blockage and improving oxygen delivery to the heart.