ATLS POST TEST 4|COMPLETE STUDY GUIDE 2026 | VERIFIED ANSWERS | 100% CORRECT | GRADED A+| PASS GUARANTEED

ATLS POST TEST 4|COMPLETE STUDY GUIDE 2026 | VERIFIED ANSWERS | 100% CORRECT | GRADED A+| PASS GUARANTEED At what point should hyperoxygenation be administered when performing tracheal suctioning on a mechanically ventilated patient? A. Before the procedure B. After the procedure C. Before and after the procedure D. During the procedure - ANSWER️C. Before and after the procedure Nerve to muscle relationship - ANSWER️C5 - Deltoid C6 - Wrist extension C7 - Elbow extension Most common cause of kidney injuries - ANSWER️Motor vehicle accidents Crystalloid solutions - ANSWER️Ringer's lactate Dextrose 5% D5W plus 1/2 NS NOT albumin Indication for emergency thoracotomy A. Pulmonary contusion B. Flail chest C. Hemothorax with initial blood loss of 700 cc D. Lung collapse with an air leak - ANSWER️D. Lung collapse with an air leak Studies used for a patient with widened mediastinum after injury - ANSWER️CT scan Upper endoscopy Transesophageal ultrasound Pericardial tamponade - ANSWER️Muffled heart sounds JVD Equalization of cardiac chamber pressure NOT hypertension Blood groups facts - ANSWER️-ABO compatibility is a must for renal transplant -Febrile reactions may be due to bacterial contamination -Citrate toxicity can cause hypocalcemia Which statement is most accurate regarding a chest tube connected to a water seal drainage system? A. Bubbles in the water indicate that the chest tube is no longer needed B. The water level should fall slightly with each spontaneous inspiration C. The drainage system should be kept below the level of chest tube insertion D. The chest tube should be clamped at all times when the patient is ambulatory - ANSWER️C. The drainage system should be kept below the level of chest tube insertion Confirmatory test that is a reliable indicator of brain death A. Apnea test with a pCO2 less than 40 B. Electromyography C. 4-vessel cerebral angiography D. CT scan of the brain - ANSWER️C. 4-vessel cerebral angiography MC spine problem seen in patient's with Down syndrome - ANSWER️Atlanto-axial instability As a result of burn trauma, fluid shifts can cause hematocrit levels to A. Rise B. Fall C. Remain unchanged while hemoglobin levels drop D. Rise initially then fall dramatically - ANSWER️A. Rise A 17-year-old male is hit on the head with a baseball bat. He withdraws and opens his eyes in response to deep painful stimuli. He also mumbles incomprehensibly. What is his Glasgow coma scale score? - ANSWER️8 Hypoxia - ANSWER️PE: cyanosis Can be rapidly measured with pulse ox After placement of a chest tube for a traumatic pneumothorax, subcutaneous emphysema is observed. After checking the drainage and chest tube site, what else should be done? - ANSWER️-Increase level of suction -Insert second chest tube -Adjust chest tube Do NOT flush tube with saline Which of the following injuries is most critical? A. Fractured femur B. Fractured pelvis C. Fractured humerus D. Fractured fibula - ANSWER️B. Fractured pelvis A patient on a mechanical ventilator is fighting the machine, and has elevated peak airway pressures. What medication should be used? A. Benzodiazepines B. Vecuronium C. Barbiturates D. Baclofen - ANSWER️B. Vecuronium What is the primary goal in the initial resuscitation of a cardiac arrest? A. Renal perfusion B. Limb perfusion C. Myocardial perfusion D. Brain perfusion - ANSWER️D. Brain perfusion During an MVA, what is most likely injury to occur after knees strike the dashboard A. Fractured femur B. Fractured humerus C. Lacerated spleen D. None of the above - ANSWER️A. Fractured femur Reason epinephrine is added to local anesthetics - ANSWER️Prolongs its action Used to treat high ICP - ANSWER️Control BG Hyperventilation (pCO2 30-35) Elevate head of bed Mannitol (osmotic diuretic) Furosemide (loop diur.) Earliest symptom of local anesthetic toxicity - ANSWER️Tongue and circumoral numbness A 18-year-old male sustains a right femur fracture and a cerebral concussion in a motor vehicle accident. His initial blood pressure is 75/50 mmHg with a pulse of 90 beats per minute. After giving him 2 liters of Ringer lactate he stabilizes, but the blood pressure falls when he is seen in the ER. Which of the following would be the cause of suspected hypotension in this patient? A. Subdural hematoma B. Undiagnosed facial fracture C. Ruptured spleen D. 10% pneumothorax - ANSWER️C. Ruptured spleen