<prompt> A patient involved in a road traffic accident presents with quadriparesis, sphincter disturbance, sensory level up to the upper border of sternum and a respiratory rate of 35minute.The likely level of lesion is:C1-C2C4-C5T1-T2T3-T4  <response>: Spinal cord lesion at C4-C5 shows impaired diaphragm activity, increased rate of respiration compensated by intact accessory muscles of respiration. Sensations are spared till the sternal border. Deltoid and biceps muscles are also spared. Ref: The Cervical Spine By Charles Richard Clark, Edward C.Benzel, 2005, Page 181; Harrisons Principles of Internal Medicine, 17th Edition, Page 2588. 