ATLS MCQ 2021 NEWEST

A 22 year old man is hypotensive and tachycardic after a shotgun wound tothe left shoulder. His blood pressure is initially 80/40 mmHg. After 2 litersof crystalloid solution his blood pressure increases to 122/84 mmHg Hisheart rate is now 100 beats per minute and his respiratory rate is 28breaths per minute. His breath sounds are decreased in the left hemithorax,and after initial IV fluid resuscitation, a closed tube thoracostomy isperformed for decreased left breath sounds with the return of a smallamount of blood and no air leak. After chest tube insertion, the mostapproriate next step isa) reexamine the chestb) perform an aortogramc) obtain a CT scan of the chestd) Obtain arterial blood gas analysese) perform tranesohageal echocardiographythe 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.108ATLS MCQ #3During the third trimester of pregnancy, all of the following changesoccur normally EXCEPT aa) decrease in PaCO2b) decrease in leukocyte countc) reduced gastric emptying rated) diminished residual lung volumee) diminished elvic ligament tensionthe answer is : page 261ATLS MCQ #4In managing the head injured patient,the most important initial step is toa) secure the airwayb. obtain c-spine filmc) support circulationc) control scalp hemorrhagee) determine the GCS scorethe answer is : p.154ATLS MCQ #5A previously healthy, 70kg (154 pound) man suffers an estimated acute bloodloss of 2 liters. Which one of the following statements applies to this patient?a) his pulse pressure will be widenedb) his urinary output will be at the lower limits of normalc) he will have tachycardia, but no change in his systolic blood pressured) his systolic blood pressure will bedecreased with a narrowed pulse ressure (true)e) his systolic blood pressure will be maintained with an elevated diastolicpressurethe answer is . pa