ATLS MCQ Questions and Answers

ATLS MCQ #1 A 22 year old man is hypotensive and tachycardic after a shotgun wound to the left shoulder. His blood pressure is initially 80/40 mmHg. After 2 liters of crystalloid solution his blood pressure increases to 122/84 mmHg His heart rate is now 100 beats per minute and his respiratory rate is 28 breaths per minute. His breath sounds are decreased in the left hemithorax, and after initial IV fluid resuscitation, a closed tube thoracostomy is performed for decreased left breath sounds with the return of a small amount of blood and no air leak. After chest tube insertion, the most approriate next step is a) reexamine the chest b) perform an aortogram c) obtain a CT scan of the chest d) Obtain arterial blood gas analyses e) perform tranesohageal echocardiography the answer is d ; but a website said a (and a makes more sense to me. so i'll go with a) info: chest tube insertion, p.108 ATLS MCQ #3 During the third trimester of pregnancy, all of the following changesoccur normally EXCEPT a a) decrease in PaCO2 b) decrease in leukocyte count c) reduced gastric emptying rate d) diminished residual lung volume e) diminished elvic ligament tension the answer is b. info: page 261 ATLS MCQ #4 In managing the head injured patient,the most important initial step is to a) secure the airway b. obtain c-spine film c) support circulation c) control scalp hemorrhage e) determine the GCS score the answer is a. info: p.154 ATLS MCQ #5 A previously healthy, 70kg (154 pound) man suffers an estimated acute blood loss of 2 liters. Which one of the following statements applies to this patient? a) his pulse pressure will be widened b) his urinary output will be at the lower limits of normal c) he will have tachycardia, but no change in his systolic blood pressure d) his systolic blood pressure will be decreased with a narrowed pulse ressure (true) e) his systolic blood pressure will be maintained with an elevated diastolicpressure the answer is d. info. page 61 ATLS MCQ Questions and Answers ATLS MCQ #6 The physiologic hypervolemia of pregnancy has clinical significance in the management of the severely injured, gravid woman by a) reducing the need for blood transfusion b) increasing the risk of pulmonary edema c) complicating the management of closed head injury d) reducing the volume of crystalloid required for resuscitation e) increasing the volume of blood loss to produce maternal hypotension the answer is e. info. page 261