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
Most common complicationassociated with ‘Total Parenteral Nutrition’ is : 
Select and explain. 
A. Catheter related infection, B. Hyperglycemia, C. Pneumothorax, D. Hyperkalemia
A: Catheter related infection
Answer: A: Catheter related infection 
Explanation: Most common complication associated with TPN is Catheter related infection
Total Parenteral Nutrition :
For providing nutritional support
All nutritional requirements given only through IV route
TPN is given through central vein and not through a peripheral vein
Can also use Peripherally Inserted Central Catheter (PICC)
Preferred site for central vein infusion is the Superior vena cava
Preferred access sites are Subclavian > Jugular > Femoral vein
Total volume of PN should be 2000-300 ml/day