A patient is brought to the emergency as a case of head injury, following a head on collision road traffic accident. His BP is 90/60 mmHg. Tachycardia is present. Most likely diagnosis is: (A) EDH, (B) SDH, (C) Intracranial hemorrhage, (D) Intra-abdominal bleed
Answer is D. Due to cushings reflex HR is decreased in brain injury.