EMT-B Chapter 29 - Chest Injuries

Commotio cordis

Blunt chest injury caused by a sudden, direct blow to the chest that occurs only during the critical portion of a person's heartbeat. May result in cardiac arrest

The phrenic nerves control the diaphragm and exit the spinal cord at:

C3, C4, and C5.

Flail chest

Caused by compound rib fractures that detach a segment of the chest wall from the rest of the thoracic cage

Cardiac tamponade (pericardial tamponade)

Occurs more commonly with penetrating chest trauma. Protective membrane around the heart fills with blood or fluid. The heart cannot pump adequate amount of blood

Hemoptysis

Spitting or coughing up blood

Which of the following is NOT a sign or symptom of a chest injury? a) Bruising of the chest wall b) Clear and equal breath sounds c) Unequal expansion of the chest wall d) Crepitus with palpation of the chest

b) Clear and equal breath sounds

Signs and symptoms of a tension pneumothorax include all of the following, EXCEPT:

collapsed jugular veins.

You are transporting a stable patient with a possible pneumothorax. The patient is receiving 100% oxygen and has an oxygen saturation of 95%. During your reassessment, you find that the patient is now confused, hypotensive, and profusely diaphoretic. What is MOST likely causing this patient's deterioration?

compression of the aorta and vena cava

Hemoptysis is defined as

coughing up blood.

The thoracic cavity is separated from the abdominal cavity by the

diaphragm.

Common signs and symptoms of a chest injury include all of the following, EXCEPT:

hematemesis.

The MOST critical treatment for a tension pneumothorax involves:

inserting a needle through the rib cage into the pleural space.

You arrive at the scene of a major motor vehicle crash. The patient, a 50-year-old female, was removed from her vehicle prior to your arrival. Bystanders who removed her state that she was not wearing a seatbelt. The patient is unconscious, tachycardic, and diaphoretic. Your assessment reveals bilaterally clear and equal breath sounds, a midline trachea, and collapsed jugular veins. You should be MOST suspicious that this patient has experienced a

laceration of the aorta

Which of the following organs or structures does NOT reside within the mediastinum?

lungs

The ________ nerves control the diaphragm.

phrenic

In order to avoid exacerbating a patient's injury, it is especially important to use extreme caution when providing positive-pressure ventilation to patients with a:

pneumothorax.

Following blunt trauma to the chest, an 18-year-old female presents with respiratory distress, reduced tidal volume, and cyanosis. Her blood pressure is 80/50 mm Hg and her pulse is 130 beats/min and thready. You should:

provide some form of positive-pressure ventilation

A patient who presents with profound cyanosis following a chest injury:

requires prompt ventilation and oxygenation.

During your assessment of a patient with blunt chest trauma, you note paradoxical movement of the left chest wall. As your partner is administering oxygen to the patient, you should:

stabilize the chest wall with a bulky dressing.

Elevation of the rib cage during inhalation occurs when

the intercostal muscles contract.

Immediate death from blunt chest trauma following a motor vehicle crash is MOST often the result of:

traumatic aortic rupture

Pleural fluid is contained between the:

visceral and parietal pleurae.

Hemoptysis is defined as:

coughing up blood.

When a person is lying supine at the end of exhalation, the diaphragm

may rise as high as the nipple line.

A rapid, irregular pulse following blunt trauma to the chest is MOST suggestive of a:

myocardial contusion.

A 19-year-old male is unresponsive, apneic, and pulseless after being struck in the center of the chest with a softball. Based on the mechanism of injury, what MOST likely occurred?

ventricular fibrillation when the impact occurred during a critical portion of the cardiac cycle

A flail chest occurs when:

a segment of the chest wall is detached from the thoracic cage.

Following a stab wound to the left anterior chest, a 25-year-old male presents with a decreased level of consciousness and signs of shock. Which of the following additional assessment findings should increase your index of suspicion for a cardiac tamponade? a) Engorged jugular veins b) A rapid, irregular pulse c) Diminished breath sounds d) Widening pulse pressure

a) Engorged jugular veins

While jogging, a 19-year-old male experienced an acute onset of shortness of breath and pleuritic chest pain. He is conscious and alert with stable vital signs. Your assessment reveals that he has diminished breath sounds over the left side of the chest. You should: a) administer oxygen and transport to the hospital. b) circumferentially tape a dressing around his chest. c) immediately perform a rapid head-to-toe exam. d) recognize that he needs a needle decompression.

a) administer oxygen and transport to the hospital.

Immediately life-threatening chest injuries must be found and managed during the _______. a) primary assessment b) secondary assessment c) patient history d) scene size-up

a) primary assessment

An open pneumothorax occurs when: a) a fractured rib perforates the tissue of the lung. b) air enters the pleural space from outside the body. c) extreme pleural pressure causes the lung to rupture. d) air enters the pleural space from a perforated lung.

b) air enters the pleural space from outside the body.

You respond to a residence for a 40-year-old female who was assaulted by her husband; the scene has been secured by law enforcement. Upon your arrival, you find the patient lying supine on the floor in the kitchen. She is semiconscious with severely labored breathing. Further assessment reveals a large bruise to the left anterior chest, jugular venous distention, and unilaterally absent breath sounds. As your partner is supporting her ventilations, you should: a) perform a focused secondary exam. b) immediately request ALS support. c) insert an oropharyngeal airway. d) obtain a set of baseline vital signs.

b) immediately request ALS support.

A spinal cord injury at the level of C7 would MOST likely result in: a) immediate cardiac arrest. b) paralysis of the intercostal muscles. c) paralysis of all the respiratory muscles. d) paralysis of the diaphragm.

b) paralysis of the intercostal muscles.

A _____ results when an injury allows air to enter through a hole in the chest wall or the surface of the lung as the patient attempts to breathe, causing the lung on that side to collapse. a) tension pneumothorax b) pneumothorax c) hemothorax d) hemopneumothorax

b) pneumothorax

A 37-year-old male was pinned between a flatbed truck and a loading dock. On exam, you find bruising to the chest, distended neck veins, bilaterally diminished breath sounds, and bilateral scleral hemorrhaging. You should: a) aggressively manage his airway. b) suspect a severe hemopneumothorax. c) request a paramedic ambulance. d) perform a secondary assessment.

b) suspect a severe hemopneumothorax.

Children are often "belly breathers" because _______. a) they are consciously controlling ventilations b) their intercostal muscles are not developed c) their diaphragm is not functional d) they are routinely hypoxic

b) their intercostal muscles are not developed

A simple pneumothorax: a) is caused by penetrating chest trauma. b) often has a nontraumatic cause. c) heals on its own without any treatment. d) is commonly caused by blunt chest trauma.

d) is commonly caused by blunt chest trauma.

A patient with blunt trauma who is holding the lateral side of his chest and has rapid and shallow respirations is most likely suffering from a) a pneumothorax. b) a pulmonary contusion. c) a sternal fracture. d) rib fractures.

d) rib fractures.

Patients with chest injuries will often present with _______. a) Cheyne-Stokes respirations b) agonal respirations c) Kussmaul respirations d) tachypnea

d) tachypnea

The thoracic cavity is separated from the abdominal cavity by the:

diaphragm.

You arrive at the scene of a major motor vehicle crash. The patient, a 50-year-old female, was removed from her vehicle prior to your arrival. Bystanders who removed her state that she was not wearing a seatbelt. The patient is unconscious, tachycardic, and diaphoretic. Your assessment reveals bilaterally clear and equal breath sounds, a midline trachea, and collapsed jugular veins. You should be MOST suspicious that this patient has experienced a:

laceration of the aorta.

If a person's tidal volume decreases, but his or her respiratory rate remains unchanged:

minute volume will decrease.

If a patient with a chest injury is only able to inhale small amounts of air per breath, he or she:

must increase his or her respiratory rate to maintain adequate minute volume.

You have sealed the open chest wound of a 40-year-old male who was stabbed in the anterior chest. Your reassessment reveals that he is experiencing increasing respiratory distress and tachycardia, and is developing cyanosis. You should:

partially remove the dressing.

Irritation or damage to the pleural surfaces that causes sharp chest pain during inhalation is called

pleurisy.

A 28-year-old male was struck in the chest with a baseball bat during an altercation. He is conscious and alert and complains of severe chest pain. Your assessment reveals a large area of ecchymosis over the sternum and a rapid, irregular pulse. In addition to applying 100% oxygen, you should

prepare for immediate transport.

A man called EMS 12 hours after injuring his chest. Your assessment reveals a flail segment to the right side of the chest. The patient is experiencing respiratory distress and his oxygen saturation is 78%. His breath sounds are equal bilaterally and his jugular veins are normal. You should suspect:

pulmonary contusion

Elevation of the rib cage during inhalation occurs when:

the intercostal muscles contract.

Immediate death from blunt chest trauma following a motor vehicle crash is MOST often the result of

traumatic aortic rupture.