Antianginal Drugs (Part 06 Final) =| Bet Blocker | Potassium Channel Opener Mechanism of Action

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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.
Angina usually causes uncomfortable pressure, fullness, squeezing or pain in the centre of the chest. You may also feel the discomfort in your neck, jaw, shoulder, back or arm.

Angina often occurs when the heart muscle itself needs more blood than it is getting, for example, during times of physical activity or strong emotions. Severely narrowed arteries may allow enough blood to reach the heart when the demand for oxygen is low, such as when you're sitting. But, with physical exertion—like walking up a hill or climbing stairs—the heart works harder and needs more oxygen.

Classification of Antianginal Drugs-
1- Organic nitrate
2- Beta-blocker
3- Calcium channel blocker
4- Pottasium channel opener
5- Sodium channel blocker


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