In terms of symptoms, are there any differences between svt and atrial fibrillation?

Sometimes: Some people can have atrial fibrillation and no symptoms. Most patients have symptoms with SVT. Hope this was helpful. Dr. R

Probably a bit: With SVT (supraventricular tachycardia) you are likely to feel dizzy or light-headed, and a sense of very rapid/racing heartbeat. With atrial fibrillation, the palpations may feel more like fluttering, there may just be an awareness that your heart is beating, chest pain/discomfort, shortness of breath, fatigue or lack of energy. You might not be sure your heart is the problem with AF!

Very similar: The symptoms of both of these can be very similar: skipped heart beats, extra heart beats, and possibly lightheadedness. If you are really good at taking a pulse, you can figure out if it is regular (SVT) or irregular (atrial fib) - but this is really hard when the heart is going fast.

SVT: atrial fibrillation is a form of SVT. Some people with art fib may not even feel it, but other types of SVT s are almost always symptomatic.

Yes: SVT is a regular tachycardia and somewhat transient and discrete while a fib is usually a constant but irregular arrhythmia, but everybody may perceive things differently.

Very Different: SVT is often sudden, limited duration, and can cause a drop in blood pressure sufficient to make someone dizzy or even faint. SVT does not increase risk of stroke and doesn't require anticoagulation. Whereas a-fib can be asymptomatic and increases the risk of stroke. A-fib usually occurs in older patients and exertional shortness of breath is the usual symptom. Both require evaluation & treatment.