5. What are the four main symptoms of mechanical intestinal obstruction? Posted on April 22, 2023 Correct answer: (1) Colicky abdominal pain.(2) Distension.(3) Absolute constipation.(4) Vomiting. Post navigation Previous Post4. What are the three important points to remember about intestinal obstruction? Next Post6. Which features suggest that a mechanical obstruction has become strangulated?