Beta Blockers Mechanism and Side Effects
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- Опубликовано: 7 июл 2024
- Beta blockers, also known as beta-adrenergic blocking agents, are a class of medications primarily used to treat various cardiovascular conditions. They work by blocking the effects of the hormone adrenaline (epinephrine) and related compounds on the beta receptors found in the heart, blood vessels, and other tissues. By doing so, beta blockers help lower heart rate, reduce blood pressure, and decrease the force of the heart's contractions.
These medications are commonly prescribed for a range of medical conditions, including:
1. Hypertension (High Blood Pressure): Beta blockers can help relax blood vessels, leading to a decrease in blood pressure.
2. Heart Conditions: They are used to treat various heart conditions such as angina (chest pain), arrhythmias (irregular heartbeats), and after a heart attack to prevent future episodes.
3. Heart Failure: Beta blockers can improve heart function and decrease the workload on the heart, which can be beneficial in certain cases of heart failure.
4. Migraine Prevention: Some beta blockers, such as propranolol, have been found to be effective in preventing migraines by reducing the frequency and severity of attacks.
5. Anxiety and Performance Anxiety: Beta blockers are sometimes used to manage symptoms of anxiety, especially in situations where a person experiences physical symptoms such as trembling, sweating, and a rapid heartbeat. They can also be used to manage performance anxiety, like in public speaking situations.
6. Hyperthyroidism: In cases of hyperthyroidism (overactive thyroid), beta blockers can help control the rapid heart rate and other symptoms associated with the condition.
It's important to note that not all beta blockers are the same. There are two main types: non-selective and selective beta blockers.
- Non-Selective Beta Blockers: These block both beta-1 and beta-2 receptors, affecting the heart as well as the lungs and blood vessels. They are generally used less often nowadays due to the potential for more side effects. Examples include propranolol and nadolol.
- Selective Beta Blockers (Beta-1 Blockers): These primarily target beta-1 receptors located in the heart. They are preferred for people with asthma or other lung conditions since they have a reduced effect on beta-2 receptors in the lungs. Examples include metoprolol, atenolol, and bisoprolol.
Beta blockers should be taken under the guidance of a healthcare professional, as their use can have various side effects and interactions with other medications. Some common side effects may include fatigue, dizziness, cold hands and feet, and sexual dysfunction. Abruptly stopping beta blockers can lead to a rebound increase in heart rate and blood pressure, so they should be tapered off under medical supervision if necessary.
As with any medication, the benefits and risks should be carefully considered based on an individual's medical history and condition. Always consult a healthcare provider before starting or discontinuing any medication.
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10years being a pharmacist and this is still usefull as hell
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Love the short and concise videos!
Thank you!
Well presented video. I was only here for personal I formation but you gave me much more. Thanks
This was a very good ,short and nice video
Assalamu'alaikum barakallah. Super thankyouuu
I took beta 1 blocker in misdiagnosis of migraine headache...which in turn fluctuated my BP..from 110by 70 to 140by100..then I was given cardio selective amlodipine and ATENOLOL for BP..in the age of 24 now I am 45. since then I am become the patient of hypertension ..
omg, thank you for sharing that! i went to the ER 2 days ago because of headaches, i was given propranolol...I am also in my 20s..i will stop it right away and consult a doctor.... thank youuuu for sharing ... i was concerned too and started googling and youtubing things about this beta blocker, and so glad that I read your comment...
I have been taking Bisoprolol for years, but starting Metoprolol tomorrow morning because of high blood pressure and tachycardia. Hopefully, the Metoprolol will help get my vitals under control so I don't have to go back to Bisoprolol and have to increase Bisoprolol and risk low blood pressure and low heart rate. We will see.
One thing I'd recommend with propranolol is to work out and exercise too. Propranolol can reduce testosterone and therefore cause a lower libido so working out will hopefully keep testosterone at a good level. But it really depends on the dosage you're taking.
Not a good idea. Propranolol drastically reduces your heart rate and prevents it from increasing. If you work out, you will easily get out of breath, as your heart can’t pump enough oxygen to the cells and muscles in your body.
@@germanhd1211 I took the lowest dosage for like 3 months and there's nothing wrong with exercising for me so idk. I've stopped taking it a long time ago now
@@SKPlayZRaDiuM Ok, I use 2x 40mg a day and I can’t even run a short distance. The dose plays a role obviously.
@@germanhd1211 Yh I only had 10mg once a day which is the lowest dose I think
Cuel es mejor para las taquicardias, el metropol o el atenolol?
may i know what will happen to blood pressure when we administer isoprenaline after propranolol? There are still got the effect of isoprenaline?
I have lost the use of my lung do to a nerve disease and have been on propranolol, lisinopril and cholesterol meds. My heart rate won’t level off and I have to go to the doctor been having chest pains for a month. I hope they can fix me 😞
How are you now?
@@Youcantseeme-qs5po only had one bad episode since comment. Starting to exercise more. Just can’t do cardio much. Arthritis pain from disease slows me down some but much better thanks.
Hi I’m just wondering if you’d had the Covid vaccine when this happened to you hope you don’t mind me asking just asking for personal reasons hope your well now and doing better 😊🙏
Laugh out loud in the last three words of the medicines ,feels like we’re being trolled 😂
Goood 👍👍
mind explaining why you would give propranolol for the last question???
Sure. While octreotide is used to stop an active variceal bleeding, propranolol is used to prevent them in high-risk patients.
@@USMLEpass thank uu
I got the answer ! Kudos to me lol ♥️😂
Kudos to you indeed!
why is the answer propranolol?
It's the best beta locker to prevent variceal bleed. Keep in mind that we use octreotide to stop the bleed and propranolol to prevent it.
Lol
Dude wtf 0:50
Angina and what?
And supraventricular tachycardia
Wolf Parkinson White syndrome my son has that
It didn’t sound very convincing. What the hell you mean by beta 1 is one heart beta 2 is two lungs. So if we had receptors in out fingers it would be called beta 10?
Hey! He said that as a reminder for example if you’re asked a MCQ. You would know that Beta 1 effects the heart( because we have 1 heart). You would know beta 2 effects the lungs (because we have 2 of them) . Hope that helps 😊
Lol