This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small Intestine - Small Bowel Obstruction, Subject name: Surgery
This condition is caused by: 
Select and explain. 
A. Paralytic Ileus, B. Hyperkalemia, C. Acute intestinal obstruction, D. Malnutrition
A: Paralytic Ileus
Answer: A: Paralytic Ileus 
Explanation: Ans. (a) Paralytic Ileus.Image shows presence of multiple air fluid levels suggestive of paralytic ileus. Causes are--1. Postoperative2. Infection - typhoid3. Reflex - following fractures of spine or retroperitoneal hemorrhage4. Uremia - following prostatectomy5. Hypokalemia Image source- style="font-family: Times New Roman, Times, serif">