Can adenosine be used in WPW?
Adenosine (Adenocard, Adenoscan) It can interrupt atrioventricular reentrant tachycardia (AVRT) by blocking conduction in the AV node to restore normal sinus rhythm in paroxysmal supraventricular tachycardia (PSVT), including PSVT associated with WPW syndrome.
Why is adenosine contraindicated in WPW?
The concern with using adenosine in patients with WPW is that if the AV node is blocked than impulses from the atria will be able to reach the ventricles at a very rapid rate, since they are not slowed down through the accessory pathway as they are at the AV node.
What drugs are contraindicated in WPW?
Safe practice in SVT with WPW
| Arrhythmia | Drugs contraindicated | Drugs Recommended |
|---|---|---|
| Antidromic AVRT | Adenosine Verapamil Diltiazem β-blockers Digoxin | Procainamide Flecainide Propafenone Amiodarone |
| AF | Adenosine Verapamil Diltiazem ß-blockers Digoxin | Procainamide Ibutilide Dofelitide Flecainide Amiodarone |
What is the drug of choice for WPW?
The drug of choice for the treatment of regular supraventricular (reciprocating) tachycardia with narrow QRS complexes, which is the most common arrhythmia in the WPW syndrome, is propranolol. Digitalis is almost equally effective in this case.
Why would adenosine not work?
Adenosine slows or blocks antegrade (atrial to ventricular) conduction through the AV node but doesn’t affect accessory or bypass tracts like those seen in WPW syndrome. Because of this, adenosine can be dangerous when given to patients with atrial fibrillation, especially if they have a bypass track.
Is WPW an AVRT?
Types of arrhythmias in WPW are AVRT (80%). There are two type of AVRT, orthodromic (90 to 95%) vs. antidromic (5%), other types are atrial fibrillation (AF) (10% to 30%), atrial flutter, and ventricular tachycardia/ventricular fibrillation [4-7].
When is adenosine contraindicated?
Adenosine is contraindicated in patients with sinus node disease, such as sick sinus syndrome or symptomatic bradycardia, and in patients with second- or third-degree AV block, except in patients with a functioning artificial pacemaker.
Can WPW be asymptomatic?
Patients who have the WPW pathway but no tachycardia have a WPW pattern or asymptomatic WPW. In young, otherwise healthy, individuals, WPW pattern is most often identified on screening ECGs, often done as part of pre-participation athletic testing.
Does adenosine terminate atrial flutter?
Adenosine will slow, not terminate, atrial fibrillation and atrial flutter allowing an accurate diagnosis to be made (which is frequently difficult when the heart rates are fast). Due to the short half-life, the saline flush is very important or else the drug may be completely metabolized before it reaches the heart.
How does adenosine feel?
It is common to experience a metallic taste in your mouth during the administration of the adenosine. Also, as adenosine can cause your heart to go into a slow rhythm, you may transiently feel dizzy or experience visual disturbances, such as double vision, or experience dizziness, breathlessness or chest discomfort.
Why is adenosine contraindicated in WPW? Adenosine slows or blocks antegrade (atrial to ventricular) conduction through the AV node but doesn’t affect accessory or bypass tracts like those seen in WPW syndrome. Because of this, adenosine can be dangerous when given to patients with atrial fibrillation, especially if they have a bypass track.
Overview. In Wolff-Parkinson-White (WPW) syndrome,an extra signaling pathway between the heart’s upper and lower chambers causes a fast heartbeat (tachycardia).
What are the symptoms of the Wolff Parkinson White syndrome?
Heart palpitations – a sudden pounding,fluttering or
How can Wolff Parkinson White syndrome be prevented?
Wolff-Parkinson-White syndrome is a type of heart condition that you are born with. It causes rapid heart rate. Medicine can help control symptoms. Cardiac ablation can cure the disease in most cases. Talk with your healthcare provider right away if you have symptoms of WPW.