Are there P waves in atrial fibrillation?

Are there P waves in atrial fibrillation?

Atrial fibrillation is the most common chronic arrhythmia, characterized by erratic atrial electrical activity with atrial rates of 400 to 600 beats per minute. The P wave is absent on the surface electrocardiogram and can, at times, be replaced with “fibrillatory waves.”

How do I know if I have junctional tachycardia?

Symptoms can include:

1. A racing or fluttering heart.
2. Shortness of breath.
3. Sweating.
4. Headache.
5. Dizziness or lightheadedness.
6. Fainting.

What is the most common cause of junctional tachycardia?

Causes of junctional rhythm include the following:

• Sick sinus syndrome (including drug-induced)
• Digoxin toxicity.
• Ischemia of the AVN, especially with acute inferior infarction involving the posterior descending artery, the origin of the AV nodal artery branch.

What is the treatment for junctional tachycardia?

Medical Care No pharmacologic therapy is needed for asymptomatic, otherwise healthy individuals with junctional rhythms that result from increased vagal tone. In patients with complete AV block, high-grade AV block, or symptomatic sick sinus syndrome (ie, sinus node dysfunction), a permanent pacemaker may be needed.

How can you tell the difference between SVT and junctional tachycardia?

SVT is always more symptomatic than sinus tach. Sinus tachycardia has a rate of 100 to 150 beats per minute and SVT has a rate of 151 to 250 beats per minute. With sinus tach, the P waves and T waves are separate. With SVT, they are together.

What are the 3 types of SVT?

There are three major types of supraventricular tachycardia:

• Atrioventricular nodal reentrant tachycardia (AVNRT).
• Atrioventricular reciprocating tachycardia (AVRT).
• Atrial tachycardia.

What is the drug of choice for supraventricular tachycardia?

In most patients, the drug of choice for acute therapy is either adenosine or verapamil. The use of intravenous adenosine or the calcium channel blocker verapamil are considered safe and effective therapies for controlling SVTs.

What is the best treatment for supraventricular tachycardia?

Treatment

• Carotid sinus massage. Your doctor may try this type of massage that involves applying gentle pressure on the neck — where the carotid artery splits into two branches — to release certain chemicals that slow the heart rate.
• Vagal maneuvers.
• Cardioversion.
• Medications.
• Catheter ablation.

What is the best medication for tachycardia?

If you’ve been diagnosed with tachycardia, your doctor may prescribe a beta-blocker. Beta-blockers stop the action of the hormone adrenaline….Beta blockers

• acebutolol (Sectral)
• atenolol (Tenormin)
• bisoprolol (Zebeta)
• metoprolol (Lopressor, Toprol-XL)
• nadolol (Corgard)
• propranolol (Inderal LA, InnoPran XL)