chest injuries supervised by: dr. waseem hajjar. introduction ►the chest contains vital organs....
TRANSCRIPT
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Chest injuries
Supervised by:Dr. Waseem
Hajjar
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INTRODUCTION
►The chest contains vital organs.►Damage to vital organs threatens life.►Most common consequence is hypoxia.►Chest injuries result in a significant number of
deaths each year.►One in every 4 cases of trauma death caused by
chest injury.
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*Chest injuries can be divided into: -Immediate life threatening injuries -Potentially life threatening injuries
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Immediate life threatening injuries
Injuries that can cause death in a matter of minutes and, therefore, must be identified and treated during
the initial evaluation and resuscitation.
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• Airway obstruction
• Tension pneumothorax
• Open pneumothorax
• Massive heamothorax
• Cardiac tamponad
• Flial chest
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Potentially life threatening injuries
Injuries that, left untreated, would likely result in death but that usually allow several hours to establish a
definitive diagnosis and institute appropriate treatment
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• Traumatic aortic rupture.
• Myocardial contusion.
• Tracheal bronchial injury.
• Rupture diaphragm.
• Esophageal trauma.
• Pulmonary contusion.
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►Mechanism of injury :►
1) Blunt chest trauma Most common cause of serious chest injuries. Post RTA, falls, direct blows, and crushing injuries. Many injuries are not immediately apparent
in physical exam. 2) Penetrating trauma
Immediate result can be severe bleeding or impaired breathing.
Any chest wound can involve underlying organ injury. No matter how superficial it looks. Injuries to the heart, lungs, and great vessels can quickly
lead to shock and cardiac arrest.
3) Iatrogenic
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►Signs and symptoms:• Most common symptoms: pain and difficulty
breathing.• Signs are obvious injury to the chest wall
( looking at both the front and back of the chest).• Note any subcutaneous emphysema, or air
present under the skin
►Assessment:Follow all steps in the assessment of the trauma
patient:• Primary survey( A. Airway B. Breathing C.
Circulation).• Resuscitation.• Detailed secondary survey (CXR , ABG ,ECG , CT
Chest , Aortogram).
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►Management
• Ensure patient has adequate oxygenation and perfusion
• Provide high-flow oxygen, ventilating when necessary
• Halt any obvious bleeding• Support circulation when needed• Rapidly transport patient to definitive care
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Rib fracture• Simple rib fractures are the most common injury
sustained following blunt chest trauma • More common in adults than children.• The most common mechanism of injury for rib
fractures in elderly persons is a fall from height or from standing. In adults, motor vehicle accident (MVA) is the most common mechanism.
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►Ribs commonly fracture at the point of impact or at the posterior angle (structurally their weakest area(.
►Ribs four through nine (4-9) are the most commonly injured.
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Signs and Symptoms:
►Pain when breathing or with movement►Patient often presents with guarding and
shallow breathing ►Chest wall instability►Deformity, discoloration►Local swelling and tenderness may be the
only sing of broken rib
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Complication s of rib fracture:
►Chronic chest pain►Lung contusion►Pneumo or hemothorax►Injury to aorta or bronci►Flail chest►Fracture of the 8th to 12th ribs can damage
underlying abdominal solid organs:
liver, spleen or kidneyes
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Management:
• Move the patient carefully to prevent the bone ends from puncturing the lung.
• Administer O2.• Allow patient to self-splint by assuming the
most comfortable position possible.• Encourage patient to limit movement.• Analgesia like Morphine, PCA, Epidural.• Evaluation: hx, px and tests (CBC, CXR and
MRI)
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FLAIL CHEST
Blunt chest trauma, causing extensive anterior and posterior rib fractures or sternocostal disconnection,
results in paradoxical chest wall movement
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Management:
►Adequate pain control ►Quickly stabilize flial segment by placing gloved
hand over injured area►After manual stabilization, place folded
universal dressing over segment and tape securely.
►Fixation (external, internal)►Chest tube as required ►Mechanical ventilation may be required in
severe cases.
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Paradoxical chest movement
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Post Traumatic Pneumothorax
►Types:Opened pneumothorax.Close pneumothorax.
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Open PneumothoraxAn injury in which an open wound in the chest wall
has exposed the pleura space to the atmosphere.The open wound allows air movement through the
defect during spontaneous respiration, causing ineffective alveolar ventilation.
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Signs:
►difficulty breathing►Cyanosis►Diminished breath sounds on the affected side
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Management:
►Cover open chest wounds with occlusive dressing and inserting a thoracostomy tube
►Gloved hand is an effective temporary occlusive dressing
►High flow oxygen ►Transport with unaffected side slightly elevated►Later closure of the wound may be necessary
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Tension Pneumothorax
• Potentially life-threatening condition that must be treated immediately.
• Can occur in blunt or penetrating chest trauma.
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What Happen in Tension Pneumothorax
►One-way valve forms in lung or chest wall ►Air enters pleural space; cannot leave►Air is trapped in pleural space►Pressure rises►Pressure collapses lung►Shifting of the mediastinum to the contralateral
side, which compreses the vena cava and obstructs venous return to the heart.
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Signs and Symptoms
• Extreme dyspnea• Restlessness, anxiety, agitation• Decreased breath sounds• Hyperresonance to percussion • Cyanosis• Subcutaneous emphysema• Rapid, weak pulse• Decreased BP• Tracheal shift away from injured side• Jugular vein distension• Early dyspnea/hypoxia - Late shock
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Management:
The thorax must be decompressed with a needle, which is replaced by an intercostal tube with
underwater seal and suction.
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Hemothorax► Blood in the pleural space .► Most common result of major chest
wall trauma► Present in 70 to 80 % of penetrating
and major non penetrating trauma .
►Sign & symptoms :► Signs of Shock , Frothy Bloody
sputum , collapsed neck veins ,cool, clammy skin, chills and restlessness
►Source of bleeding :► intercostal vessels, internal
mammary vessels , lung parenchyma, bronchial arteries, major pulmonary vessels ,heart and great vessels
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Management
► ABC’s : secure airway , assist the breathing with high o2 .
►Rapid transport .►A hemothorax is managed by removing the source
of bleeding and by draining the blood.
*Indications for urgent thoracotomy►Chest drainage >1250 ml ►or >1000 ml with hypotension► or >200 ml per hour for 3 hours
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Chest tube indicated to drain the contents of the pleural space , usually air or blood ,but may include other contents .
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Absoluteindications
►Pneumothorax (tension , open or closed )►Hemothorax .►Bilateral traumatic arrest
Relative indication
►Rib fracture & positive.►pressure ventilation.►Profound hypoxia/ hypotension and penetrating injury.► Profound hypoxia / hypotension and unilateral hemothorax.
Contra-indication: ►Refractory
coagulopathy .►lack of cooperation by the patient►diaphragmatic hernia
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Pulmonary contusion► Bleeding into the lung itself is a pulmonary
contusion► The excess fluid interferes with gas exchange ,
potentially leading to inadequate oxygen levels (hypoxia) .
► occurs in 25–35% of all blunt chest trauma .► About 70% of cases result from motor vehicle
collision .
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Sign & symptoms:►Soft crackles may be heard over injury site►Chest pain, point tenderness, and localized
swelling over area of impact
Diagnosis :►X-ray ►CT is a more sensitive test for pulmonary
contusion
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►A CT scan showing a pulmonary contusion (red arrow) accompanied by a rib fracture
(blue arrow)
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Management :
►Supply high-flow supplemental oxygen .►analgesics.►Support ventilation as needed with
Mechanical ventilation (in the patient with worsening pulmonary insufficiency).
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Cadiac inuries 1 )Pericardial tamponade :► Emergency condition in which fluid accumulates in
the pericardium (the sac in which the heart is enclosed).
►Usually result from a penetrating chest trauma with laceration to the heart itself .
►Blood filling the pericardial sac compresses the heart, witch prevents the heart's ventricles from filling properly. This in turn leads to a low stroke volume
►The end result is ineffective pumping of blood , shock , and often death.
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Sign & symptoms:
The classical cardiac tamponade presents three signs known as Beck's triad. (Hypotension , jugular-venous distension , and muffled heart sounds ) .
other signs , like pulses paradoxux and ECG changes as well as general signs & symptoms of shock .
Management : ABC’s With High Flow oxygen .Treat S/S of shock .Notify Hospital and ALS Unit as soon as possiblePericardiocentesis :Using aseptic technique, Insert at
least 3” needle at the angle of the Xiphoid Cartilage at the 7th rib.
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2 ) Myocardial contusion :►Common site: Rt ventricle►Considered in trauma patients with blunt chest
injury and unexplained hypotension or ECG abnormalities
Diagnosis :► clinical eg: fractured sternum►ECG: (arrhythmia, ST elevation).►CPK-MB►Echocardiography
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Management :
►ABC + high flow o2, ventilation support as needed►Cardiac monitor►Antiarrhythmic drugs.►Inotropic support.►request ALS backup .
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Blood vessel injuriesAortic injury (Traumatic aortic
rupture) : The aorta is torn or ruptured as the
result of trauma. It s frequently fatal due to the
profuse bleeding Occurs when the body suddenly
decelerates but the organs continue to move.
Common sites: The most common site of injury is the aortic isthmus ,
Symptoms-signs: sever chest or back pain, weak or absent femoral pulses, unequal arm BPs .
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Diagnosis►After a clinical evaluation, most patients are best
evaluated wit CXR followed by Chest CT or Angiography.
► however CXR demonistrat a classical finding
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► widened widened mediastinum.mediastinum.
► blurred aortic blurred aortic knob.knob.
► Aortopulmonary Aortopulmonary window window opacification.opacification.
► First or second First or second rib #.rib #.
► NG tube NG tube deviation.deviation.
► Depressed Lt Depressed Lt mainstem mainstem bronchus.bronchus.
► Pleural apical Pleural apical capping.capping.
► Widened Widened paratracheal paratracheal stripe.stripe.
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Management►ABC’s ►Surgical repair, usually with cardiopulmonary
bypass technique
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Diaphragmatic Rupture
►Common site: Lt hemidiaphragm
►Symptoms-signs: dyspnea, orthopnea, chest pain, bowel sounds in the chest
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DiagnosisCXR: NG tube or bowel in the chest, gastric
distention with ipsilateral lung collapse.
Management ► surgical repair
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