Based on your symptoms and the normal Holter, ECG, and cardiology evaluation, this does not suggest slow atrial fibrillation or any dangerous rhythm disorder.
• A brief pulse drop when lying down (to ~50 bpm) is commonly due to increased vagal tone and is physiological
• The “pause” or “butterfly” sensation is most consistent with benign premature beats (PACs/PVCs)
• The sudden rise to 140 bpm occurred after panic, which strongly points to anxiety-induced sinus tachycardia
• Slow AF is persistent, irregular, and does not normalize quickly with posture, and it would almost certainly appear on Holter
Overall, this pattern fits a benign heart rhythm + anxiety cycle, not a structural or electrical heart disease.
Next Steps
1. Do not label this as AF
• Your investigations already rule that out
2. Review Concor (bisoprolol) dose with your doctor
• It lowers heart rate and may contribute to resting bradycardia
• Do not stop suddenly without medical advice
3. Address anxiety as a primary trigger
• Consider psychological support or structured anxiety management
• If needed, short-term anxiolytic or SSRI therapy can help reset the cycle
4. Follow up only if red flags appear
• Fainting
• Persistent irregular pulse for hours
• Severe breathlessness or chest pain
Health Tips
• Stop frequent pulse checking — it reinforces panic
• Avoid caffeine, nicotine, and dehydration
• Practice slow breathing (4-6 breaths/min) during episodes
• Adequate sleep reduces vagal and ectopic triggers
• Reassure yourself: normal Holter = safe heart
• Premature beats feel dramatic but are harmless in a normal heart
Your symptoms are real, but the cause is functional and reversible, not dangerous. Once anxiety is controlled, these sensations usually fade significantly.
If you’d like, I can also help you with:
• How to safely taper fear around heart rate changes
• Whether beta-blocker is truly needed
• Simple techniques to stop panic-induced palpitations quickly