Action of Cardioselective beta blockers naturevitaminsa.blogspot.com/2019/10/action-of-cardioselective-beta-blockers.html
What is the Cardioselective beta-blockers Cardioselective beta-blockers are selective beta-adrenergic blocking agents that preferential block the beta-1 receptors only and prevent their stimulation.Beta-1 androgenic receptors are located on the nerve ending of the sympathetic nervous system and in the kidney, eye. Beta-adrenergic blocking agent blocks the stimulation of the heart by inhibiting the binding of epinephrine (adrenaline) and nor-epinephrine (non-adrenaline) hormone to the Beta-1 receptors located on the nerves.
adrenaline hormones are released by the adrenal gland and some neurons. its main function is to increase heartbeat, blood pressure, enlarge the pupil of the eye and expanding the air passage of the lungs. Cardio selective beta-blockers will always block beta 1 receptors or prevent stimulation by inhibiting the Cardioselective beta-blockers: Anxiety(fear) binding of hormones with the beta 1 receptor. By inhibiting stimulation, they reduce blood pressure, heart rate, cardiac output, forces of constriction, and cardiac work, which in turn reduce oxygen consumption by the heart and increase the tolerance of exercise. If they are present in excess amount then they can also block the beta-2 adrenergic receptor located in the bronchial smooth muscles of the airways, which results in an increase of bronchial resistance. cardioselective beta-blockers are more efficient in blocking beta-1 receptors than beta-2 receptors, but they are less cause bronchial constriction compared with non-selective beta-blockers.
List of cardioselective beta-blockers 1/3
Acebutolol Metoprolol Atenolol Betaxolol Bisoprolol Metoprolol Nebivolol Esmolol
cardioselective beta-blockers are associated with a medical condition Angina In angina, the heart muscles are not getting enough amount of blood and oxygen as much as heart needs, which causes chest pain or discomfort. it usually occurs when the arteries are blocked or narrowed. It is the symptoms of heart condition knowns as myocardial ischemia. drugs: Metoprolol, aspirin, nitroglycerine and Metaprolol tartrate. drugs action: cardioselective beta-blockers reduce the cardinal work and oxygen consumption by the heart. Anxiety anxiety is characterized by an unnecessary or unwanted feeling of fear, worried thoughts. its symptoms may include swearing, sweating, voice changes and an increase of blood pressure, heartbeat. drugs: Alprazolam, clonazepam, buspirone,xanas, ascitalopram and lexapro. drugs action: fall of blood pressure and reduce the heartbeat. Heart attack a heart attack is also known as myocardial infarction. it usually occurs when the area of the heart muscle is permanently damaged due to insufficient supply of oxygen to that area. Most of the heart attack is the result of atherosclerosis (narrowing of the arteries). drugs: Plavix, clopidogrel, metoprolol, lisinopril, and aspirin. drugs action: prevent unwanted blood clotting in the coronary arteries. Mitral valve prolapse 2/3
Its result of malfunctioning of the mitral valve, that separate left upper and lower chamber of the heart. drugs: Metoprolol, atenolol, Bystolic, propanolol, Tenormin, bisoprolol, and nebivolol. drug action: prevent the stimulation of pacing of the heart by inhibiting the release of chemical signals. also help in reducing blood pressure and heartbeat. Congestive heart failure It is the heart condition in which heart ability to pump blood is affected. heart capability to pump blood to the rest of the body is reduced. sometimes, the heart can't fill with enough blood. drugs: carvedilol, metoprolol, Coreg, furosemide, and Aldactone. drugs action: allow complete filling of the left ventricle( main pumping chamber) and reduce the heartbeat. drugs also help in the widening of the blood vessels, result in lowering blood pressure.
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