Thanks for writing to healthcare magic
1. We can not be sure that it is PVC unless you see them on ECG. Missed beats can have many forms on ECG and PVC is one of them.
2. The only work up required for asymptomatic (without any symptoms/complaints) patients with PVCs is a plain echo, if that is normal and does not show any structural heart disease
, no treatment or further investigations are required.
3. you are right in cutting on caffeine as this may help such patients but i would still keep your case as undiagnosed hence you get an ECG done and if it shows VPCs or any other abnormality
, proceed as per your cardiologists advice.
feel free to discuss further.