Would heart failure be possible after normal resting echo? pains, vomiting, collapse, tachycardia on standing and complete exercise intolerance 5 months. possible pots but symptoms so severe i worry.

Unlikely: The symptoms of heart failure are difficulty breathing with exertion or shortness of breath at rest, leg swelling, inability to lie flat on back due to shortness of breath and cough, and fluid retention. Assuming a completely normal echo, your symptoms many related to vasovagal syncope, pots, adrenal insufficiency among others. Tilt table testing and certain medications can help with diagnosis.

Unlikely: Heart failure not likely with a "normal" echo, especially at your age. And heart failure presents mainly with shortness of breath, not dizziness on standing up. Good luck.

Echo: Systolic heart failure very unlikely with resting echo normal. Would suggest talking to your doc about checking a holter monitor to investigate arrhythmia and/or treadmill stress test to see on ECG how your heart responds to exertion and your blood pressure responds as well.

Yes.: Heart failure is possible even when an echocardiographic study demonstrates normal systolic function. It's referred to as diastolic heart failure and often there are suggestions of it on an echo. Your symptoms merit a thorough evaluation by your doctor or by a cardiologist.