This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Neuraxial Blockade, Subject name: Anaesthesia
Epidural opioid has following complications except- 
Select and explain. 
A. Pruritus, B. Respiratory depression, C. Less complete perineal relaxation, D. Haemodynomic alteration
D: Haemodynomic alteration
Answer: D: Haemodynomic alteration 
Explanation: The four classic side effects are pruritus, nausea and vomiting, urinary retention, and respiratory depression. Numerous other side effects have also been described. Most side effects are dose-dependent and may be more common if the opioid is administered intrathecally. Side effects are less common in patients chronically exposed to either intrathecal, epidural, or systemic opioids. Some side effects are mediated interaction with specific opioid receptors while others are not.