<prompt> Most common acute complication of dialysis is -HypotensionBleedingDementiaMuscle cramps  <response>: Hypotension is the most common acute complication of hemodialysis particularly among patients with diabetes mellitus.Factors involved areÿ. Excessive ultrafiltration, with inadequate compensatoryvascular filling, impaired vasoactive or autonomic response, osmolar shis, overzealous use of anhypertensives. 