If your heart rate shoots up quickly with mild exercise, and you feel chest pressure when it goes above 155 bpm, even though your old echo was normal:
Most common reasons
Deconditioning (loss of stamina) — even a few weeks of reduced activity can make HR rise fast.
Anxiety / panic response — causes sudden HR spikes and chest tightness.
Low fitness + over-focusing on HR — common when someone is anxious about heart health.
Anemia,
thyroid issues,
vitamin deficiencies — can reduce exercise tolerance.
Electrolyte imbalance or dehydration — makes HR rise quickly.
Old echo is 8 months old — symptoms have changed.
But chest pressure = needs re-check
Because you’re getting chest pressure at higher HR, you should get:
ECG
Echo (repeat)
TSH, CBC,
Vitamin D,
B12
TMT (treadmill test) — especially important since your symptoms appear only on exertion.
Short advice
Until checked:
Don’t push beyond the point where chest pressure starts.
Increase exercise slowly (start with brisk walking, not running).
Stay hydrated and maintain
electrolytes.
When to worry
If you get chest pain, dizziness, fainting, or breathlessness, get checked immediately.
If you want, tell me:
Your resting HR
Any recent blood tests
Whether chest pressure happens at rest