ECGs

This ECG is from 68-year-old man with dizziness and syncopal episodes...

A 55-year-old male with history of smoking complained of 3 days of intermittent chest pain lasting up to a few hours each day

This ECG is from 46-year-old man presenting with several months of exertional dysponea and fatigue...

This ECG is from a 69-year-old male...

This ECG is from an 81-year-old male with syncopal episodes...

This ECG is from a 49-year-old man with chest pain...

This ECG is from an 83-year-old male who presented with chest pain, nausea, dyspnea following a brief loss of conscious...

This ECG is from an 83-year-old male patient who presented with shortness of breath...

This ECG is from a 22-year-old female with sudden onset severe headache...

This ECG is from a 55 year old with chest pain. What is your interpretation and diagnosis ?