ESRD patient in the ER after missed dialysis: history and approach

A 58-year-old man with end-stage renal disease on hemodialysis three times a week through a left arm AV fistula comes to the emergency department with 2 days of shortness of breath, leg swelling, generalized weakness and palpitations.

Take a focused history. Then tell the examiner the examination findings you would look for, your differential diagnosis, urgent investigations and initial management.