Beta blockers treat high blood pressure and other conditions, such as heart problems. Learn why you might need them and their possible side effects. Beta blockers, also known as beta-adrenergic blocking agents, are medications that reduce your blood pressure. Beta blockers work by blocking the effects of the hormone epinephrine, also known as adrenaline. Beta blockers cause your heart to beat more slowly and with less force, which lowers blood pressure. Beta blockers also help open up your veins and arteries to improve blood flow.
EKG: Acute Myocardial Infarction Patterns
ECG QUIZ: Put your knowledge to the test with over ECG strips!
In normal individuals, when the sinus node creates an action potential, it must pass through the AV node to get to the ventricles. When an accessory pathway is present, the sinus node action potential can pass through the bypass tract before the AV node, resulting in the ventricles becoming rapidly depolarized. This occurs because the action potential from the sinoatrial node is able to conduct to the ventricles very quickly through the accessory pathway, and thus the QRS occurs immediately after the P wave, making the delta wave. If an AV blocking agent is given, fewer atrial action potentials will pass through the AV node, and more will pass through the accessory pathway.
ECG changes caused by antiarrhythmic drugs, beta blockers & calcium channel blockers
You walk back to triage with the tech to see a 86 year old male patient who looks unwell. Dry mucus membranes, mumbling to himself and not making sense, not responding to your questions, febrile, diaphoretic. You know something is wrong, and a quick review of his nursing home paper work gives you the answer: digoxin toxicity.
This material must not be used for commercial purposes, or in any hospital or medical facility. Failure to comply may result in legal action. Medically reviewed by Drugs. Last updated on Nov 16, Heart block is a problem with the flow of electrical signals in your heart.