Beta-blockers decrease the heart rate and cardiac output, which lowers blood pressure by blocking the effects of adrenalin. They're also used with therapy for cardiac arrhythmias and in treating angina pectoris.
Anticoagulants (blood thinners) work by making it harder for the blood to clot, or coagulate. They aren't designed to dissolve existing blood clots. They prevent new clots from forming or existing clots from getting larger. Because a common type of stroke is caused by a blood clot obstructing blood flow to the brain, anticoagulants are often prescribed for people with certain conditions to prevent the occurrence of a first stroke or to prevent the recurrence if the patient has already had a stroke. Anticoagulants are also given to certain people at risk for forming blood clots, such as those with artificial heart valves or who have atrial fibrillation.
- Take all medications exactly as prescribed.
- Never stop taking any prescription medication without first consulting your healthcare provider.
- If you have any side effects, tell your healthcare provider about them.
- Tell your healthcare provider about all your other drugs and supplements, including over-the-counter medications and vitamins.
- Many rhythm disorders, especially tachycardias, respond to medications. Several drugs are now available and more are being developed. These drugs can't cure the arrhythmia, but they can improve symptoms. They do this by preventing the episodes from starting, decreasing the heart rate during the episode or shortening how long the episode lasts.
- Sometimes it's hard to find the best medication for a child. Several drugs may need to be tried before the right one is found. Some children must take medication every day; others need medications only when they have a tachycardia episode. It's very important to take the medication as prescribed.
- All medications have side effects, including drugs to treat arrhythmias. Most of the side effects aren't serious and disappear when the dose is changed or the medication is stopped. But some side effects are very serious. That's why some children are admitted to the hospital to begin the medication. If your child is prescribed medication, it's very important that your child take the medication just the way the doctor prescribes it.
- It's often necessary to monitor how much of a drug is in your child's blood. The goal is to make sure there's enough of the drug to be effective, but not so much that harmful side effects occur. These blood tests require taking a small amount of blood from a vein or the finger. It's a good idea to talk to your child about this before the doctor visit.