<prompt> Which of the following is M.C. cause of hypotension in fracture ribs T10-T12:Abdominal solid visceral organ injuryInjury to aortaInter costal artery damagePulmonary contusion  <response>: Ans. is a ie Abdominal solid viscera injury Most common cause of hypotension in trauma pt. is due to haemorrhage. The blood loss may be external and obvious, or internal and covert or combination of both. The fracture of the lower ribs T9 - T12 are usually associated with splenic or hepatic injuries and the fracture of upper ribs T1-T3, clavicle or scapula are associated with major vascular injuries. 