ATLS EXAM 2024-2025 175 QUESTIONS and ANSWERS Which of the following is NORMAL in pregnancy? A. increased residual lung volume B. Decreased plasma volume C. Decreased total RBC mass D. Widened symphysis pubis E. -ANSWER- D. Widened symphysis pubis A 34-year-old man is brought to the ED after being pinned to the wall of building by a cement truck. He is in obvious shock, and has deformities and marked swelling of both thighs. Although no open wound are present, his shock: A. Cannot be explained without concomitant pelvic fracture B. Signifies a loss of approximately 15% C. Is consistent with blood loss from bilateral femoral fracture D. Will likely be reversed if appropriate traction splint are applied E. Cannot be explained by his observe -ANSWER- C. Is consistent with blood loss from bilateral femoral fracture Prior to passage of urinary catheter in a man, it is essential to: A. Examine the abdomen B. Determine pelvic stability C. Examine the rectum and perineum D. Perform a retrograde urethrogram E. Know the history and mechanism of injury -ANSWER- C. Examine the rectum and perineum The best guide for adequate fluid resuscitation of the burn patient is: A. Adequate urinary output B. Reversal