What is angina pectoris PDF?
Abstract. Introduction Angina pectoris is a medical condition that occurs when your heart receives a decreased amount of oxygenated blood. Often, this occurs due to deposits of cholesterol clogging the blood vessels that carry blood to your heart.
What are the three types of angina pectoris?
There are three types of angina:
- Stable angina is the most common type. It happens when the heart is working harder than usual.
- Unstable angina is the most dangerous. It does not follow a pattern and can happen without physical exertion.
- Variant angina is rare. It happens when you are resting.
What is the mechanism of angina pectoris?
Angina pectoris often results from ischemic episodes that excite chemosensitive and mechanoreceptive receptors in the heart. Ischemic episodes release a collage of chemicals, including adenosine and bradykinin, that excites the receptors of the sympathetic and vagal afferent pathways.
What are the two main types of angina pectoris?
These include:
- Stable Angina. In stable angina, episodes of chest discomfort are usually predictable.
- Unstable Angina. In unstable angina, chest pain can occur at any time—often while a person is resting.
- Variant Angina Pectoris. Variant angina pectoris can happen at any time.
What is the meaning of pectoris?
a : a larger one that arises from the clavicle, the sternum, the cartilages of most or all of the ribs, and the aponeurosis of the external oblique muscle and is inserted by a strong flat tendon into the posterior bicipital ridge of the humerus. — called also pectoralis major.
What is emergency treatment of angina pectoris?
The initial treatment consists of administration of oxygen, aspirin, nitroglycerin, morphine, and a beta-blocker. Given an altered, yet nondiagnostic ECG and no contraindications, further treatment with heparin (low-molecular weight or unfractionated), clopidogrel, or other antiplatelet agents may be initiated.
What is angina in pharmacology?
Angina, which is sometimes called angina pectoris, is chest pain that is caused by inadequate coronary blood flow to the myocardium. When coronary blood flow cannot deliver sufficient oxygen to support cardiac oxidative metabolism (reduced oxygen supply/demand ratio), the myocardium becomes hypoxic.
How do you prevent angina pectoris?
You can reduce or prevent angina by reducing your heart disease risks factors, including:
- Smoking. If you smoke, stop.
- Poor diet. Eat a healthy diet with limited amounts of saturated fat, trans fat, salt and sugar.
- Lack of physical activity.
- Excess weight.
- Medical conditions.
- Stress.
Why is it called angina pectoris?
Angina pectoris is the medical term for chest pain or discomfort due to coronary heart disease. It occurs when the heart muscle doesn’t get as much blood as it needs. This usually happens because one or more of the heart’s arteries is narrowed or blocked, also called ischemia.
What are the complications of angina pectoris?
Possible complications of stable angina include heart attack, sudden death caused by abnormal heart rhythms, and unstable angina. These complications can develop if stable angina is left untreated.
What is the root of pectoris?
1570s, “of or pertaining to the breast or chest,” from Latin pectoralis “of the breast,” from pectus (genitive pectoris) “breast, chest,” a word of unknown origin.
What is ACS protocol?
The most frequently used regimen is IV metoprolol 2-5 mg given every 5 minutes (up to 15 mg total) followed by 25-100 mg given orally twice a day. Beta-blockers should not be used acutely in patients with cardiogenic shock or signs of heart failure on presentation.
Do you perform CPR for angina?
Blockage of a major blood vessel can lead to the heart stopping (cardiac arrest) and the need for CPR. An angina attack occurs where the patient has narrowed blood vessels around the heart.
What are nitrates for angina?
Nitrates improve blood flow by relaxing and dilating (expanding) veins and arteries, including the coronary arteries. They reduce the amount of blood returning to the heart, which may be helpful for patients with heart failure.
Who discovered angina pectoris?
Historically, the first description of angina pectoris by a medical person, Dr William Heberden, was in 1768. During the next decade, the number of similar patients that Heberden saw increased nearly fourfold, and many other English medical writers reported cases of angina.
What is the most common cause of angina?
Angina is caused by reduced blood flow to the heart muscle. Blood carries oxygen, which the heart muscle needs to survive. When the heart muscle isn’t getting enough oxygen, it causes a condition called ischemia. The most common cause of reduced blood flow to the heart muscle is coronary artery disease (CAD).
How many types of angina are there?
The two main types of angina are stable angina and unstable angina.