Chest Trauma

blunt chest trauma | What Is Chest Trauma?

Following head trauma and spinal trauma, chest trauma is the third most common cause of death in the United States due to trauma. It is responsible for about 20 percent of all deaths in the U.S. and is a major factor when it comes to death from other causes about 50 percent of the time.

Things You Need to Know About Chest Trauma: A Guide

In this guide:

Chest Trauma and Types of Chest Injuries

Chest trauma causes a great many cases of morbidity and mortality in the U.S. Chest trauma can be blunt chest trauma from, say, a car accident. It can also be from penetrating trauma from a knife or a gunshot injury. Blunt force trauma can affect the bony skeleton such as the ribs, the sternum, the clavicles, and the scapulae. It can also affect the lungs and the tracheobronchial tree, the heart, the esophagus, and the great vessels of the chest.

Trauma alone is the leading cause of death from age 1 to 45. There are more than 100,000 cases of accidental death in the U.S. Thoracic injuries occur in about 12 persons per million per day and about a third of these injuries need hospital admission. Blunt trauma to the chest accounts for a quarter of all these injuries.

The pathophysiology involved in blunt force trauma to the chest involves some kind of damage to the flow of blood, the flow of air, or both functions. Sepsis can happen when there is an esophageal perforation, leading to leakage of food contents into the bloodstream.

Many cases of blunt trauma lead to rib fractures. Rib fragments can puncture a portion of the lung, and it can make it too painful to breathe properly. The traumatic injury can impact the lungs and can cause pulmonary contusions. The presence of pulmonary contusions means the lung capacity is diminished.

The heart or major vessels can be damaged, causing hemorrhaging and resulting in a decrease in cardiac output. If severe, it can lead to death.

Penetrating injuries can be low velocity, medium velocity, or high velocity. Low-velocity injuries include knife wounds that only disrupt the areas in contact with the instrument. Medium velocity wounds come from handguns and air-powered pellet guns. They have a moderate amount of tissue destruction. High-velocity weapons like rifles and military weapons do the most damage. Trauma-related to the latest combat battles over the last 20 years has been 40 percent penetrating chest trauma injuries.

Chest Trauma Symptoms

Symptoms of chest trauma can be roughly the same, regardless of whether the trauma was blunt force or penetrating. These symptoms include:

  • Difficulty breathing
  • Hypotension from blood loss
  • Failure of the lungs to expand properly
  • Crunching sounds when palpating the rib cage
  • Bruising of the chest wall
  • Coughing up blood
  • Flail chest, when a section of the chest wall sucks in when the patient is inhaling
  • Puncture wound to the chest that sucks air
Chest Trauma Causes

blunt chest trauma | Chest Trauma Causes | What Is Chest Trauma?

Chest trauma has several causes, usually related to high forces. For example:

  • Motor vehicle accidents account for up to 70 percent of blunt force chest trauma
  • Motorcycle accidents
  • ATV accidents
  • Falls from a great height
  • Sports-related injuries
  • Gunshot wounds
  • Knife injuries
  • Combat blast injuries

The vast majority of chest injuries are related to a motor vehicle, motorcycle, and ATV trauma. This is why it is important to get EMS on the scene to these types of accidents because one can manage chest trauma if a response is correct.

Chest Trauma Diagnosis

In some cases, plain film x-ray is necessary to show chest trauma. This test, using a PA and Lateral view, can show rib fractures, sternal fractures, and clavicle fractures. It can also show if the lung has collapsed or partially collapsed and can tell if any metallic foreign bodies reside in the chest cavity.

Sometimes, there are more things to be looked at. The doctor orders the giving of IV contrast dye to show the contours of the arteries and veins. Then an x-ray machine attached to a computer is used to give cross-sectional images of the chest cavity, including the lungs, bones, and heart. It is a good test to look for areas of bleeding or for damage to the heart and great vessels.

In some cases, doctors do an MRI examination. MRI machines are particularly good at picking up soft tissue injuries, even without contrast. They give cross-sectional images just like CT scanners but receive their images using a strong magnet and radio waves.

The various imaging techniques are looking for broken bones, collapsed lungs, foreign bodies, bleeding outside the heart (a pericardial hemorrhage), and for the structure of the major vessels of the chest cavity.

Chest Injury Treatment

The treatment of chest injuries begins in the field because rapid treatment at the scene of the accident can save lives. Here are the treatment techniques and pearls to consider:

  • Remove any object in the chest like a knife. Doing so can cause external or internal hemorrhage.
  • Place an airtight plastic or metallic dressing over any hole that goes into part of the chest activity.
  • Position the injured person with the injured side facing down. This pool the blood in an area already injured.
  • Give the injured person pure oxygen to breathe. This helps in cases of blood loss or ventilator dysfunction.
  • Immobilize the neck and back of the patient as soon as possible to avoid dislocating any possible fractures of the c-spine, t-spine, or l-spine.
  • CPR helps indicate if the patient is not breathing adequately or has no pulse or blood pressure.

Internal chest trauma requires emergency evacuation for x-rays and definitive treatment. The ABCs of trauma therapy always apply as the patient gets transported and reaches the hospital.

The emergency department will need to treat rib fractures. The first and second ribs are the most dangerous as they can cause large vessel damage to the vessels traveling from the chest to the arms. Fractures are painful on deep breathing and, as long as they are not causing a pulmonary laceration, they can be kept as still as possible until they heal.

If a rib is fractured in two or more places and is accompanied by nearby ribs also fractured in two or more places, you get a flail chest. This involves a paradoxical collapse inward of the section of chest wall not connected to any other part of the body through bony connections. When the patient inhales, the flail chest part of the chest sucks inward paradoxically. It often involves having a pulmonary contusion underneath. Binding the segment and having the patient lie on the affected side with padding applied will stabilize the condition.

If there is a sudden force on the chest as seen in high-speed collisions, falls from great heights or being pinned under a rock, there is a sudden increase in the pressure in the chest. Blood won’t move properly through the heart and the patient may be cyanotic. In such a case, elevate the head of the bed to 30 degrees to reduce the excess pressure to the head. Supplemental oxygen is necessary until surgery fixes the damaged heart.

In a pulmonary contusion, a person gets damaged lung tissue is damaged and blood-filled alveoli, which blocks the lung oxygen exchange. It is common in flail chest conditions.

A pericardial tamponade, blood fills up the pericardial space. It prevents the heart from expanding completely as it pumps. The pulses become diminished and the pulse pressure will become less. The treatment is to insert a needle into the pericardial space and draw out the excess blood.

There is a condition called commotio cordis, in which a healthy person goes into sudden cardiac arrest from ventricular fibrillation. It is due to a sudden force striking the middle of the chest. This has to happen at the right moment during the heartbeat to cause it. CPR and defibrillation are the best treatment options.

If you or a loved one has suffered chest trauma as a result of someone else's negligence and would like to discuss your legal options with an experienced personal injury attorney, please don't hesitate to give my team a call at (916) 921-6400.

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Editor's Note: This page has been updated for accuracy and relevancy. JC

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