This risk is higher in left ventricular outflow tract obstructions, heterotaxy, and atrioventricular septal defects. Bleeding, infections, bowel obstructions and organ perforations are the main problems they deal with. A similar procedure can be employed to allow crossings of small chasms or similar obstructions. Infections and rupture of the appendix and small bowel obstructions are other common emergencies. Acquired obstructions can occur due to infections. Many common obstructions such as walls, pillars, home appliances etc. Intra-oral examination should include observations for asymmetry, discolouration, pulsation and obstructions in the duct orifices. Surgery and colonic stent placements are widely applied for curing colonic obstructions. The reduction in population is mainly due to manmade obstructions within river systems. This is the same mechanism that causes pain in bowel obstructions. Additionally, collisions with obstructions are usually fatal. Float switches must be clear of any obstructions within the sump. Management of obstructions depends on the cause. Flowers are typically borne away from the trunk or other obstructions. Such moves are also useful to get around obstructions.