This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
Which of the following is true about complications of hemodialysis? 
Select and explain. 
A. A beta-amyloid deposition, B. Cardiovascular complications, C. Renal rickets, D. Metabolic acidosis
B: Cardiovascular complications
Answer: B: Cardiovascular complications 
Explanation: Ans. (b) Cardiovascular complications* Hypotension is the most common acute complication of hemodialysis.* Numerous factors appear to increase the risk of hypotension, including excessive ultrafiltration with inadequate compensatory vascular filling, impaired vasoactive or autonomic responses, osmolar shifts.* A beta 2 amyloid deposition is seen in dialysis dementia and thus rules out choice A* Metabolic acidosis is treated with dialysis and thus rules out choice D.* Cardiovascular disease constitutes the major cause of death in patients with ESRD.* Cardiovascular mortality and event rates are higher in dialysis patients than in patients post-transplantation, although rates are extraordinarily high in both populations.