SEVERE OPEN CHEST TRAUMA AND PENETRATING CHEST TRAUMA
Open pneumothorax, tension pneumothorax, cardiac tamponade, the deadly dozen and prehospital management updated for 2026
Medical, scientific and educational review based on ATLS, PHTLS, TCCC, TECC, WSES-AAST, EAST and international trauma literature
By DrRamonReyesMD
EMS Solutions International
EDUCATIONAL WARNING
This material is intended strictly for medical, educational and clinical simulation purposes. Images or videos related to open chest trauma, penetrating wounds, stab injuries, road traffic collisions or chest decompression may be graphic and disturbing. They are not published for sensationalism, morbidity or audience capture, but to improve early recognition of life-threatening injuries and training for healthcare professionals, prehospital providers, military medics, tactical responders and first responders.
INTRODUCTION
Chest trauma remains one of the most important causes of preventable death in polytrauma patients. Thoracic injuries may produce hypoxia, obstructive shock, hemorrhagic shock, ventilatory failure, traumatic cardiac arrest and death within minutes if they are not identified during the primary survey.
In the prehospital, military, tactical and emergency care environment, the problem is not merely knowing how to define pneumothorax or hemothorax. The real problem is recognizing when a chest injury is killing the patient and acting before radiological confirmation when physiology indicates immediate life threat.
Chest trauma may be blunt or penetrating. Blunt trauma is commonly seen after road traffic collisions, falls, crush injuries, explosions and high-energy sports injuries. Penetrating trauma is associated with knives, firearms, metal fragments, blast injuries, impalement and projected objects. Both mechanisms can injure the chest wall, lung, pleura, heart, great vessels, diaphragm, trachea, bronchi and esophagus.
THE DEADLY DOZEN OF CHEST TRAUMA
The “deadly dozen” of chest trauma groups twelve potentially lethal thoracic injuries. Traditionally, they are divided into six injuries that must be identified during the primary survey and six injuries that may appear or be confirmed during the secondary survey or through complementary studies.
Primary survey life-threatening thoracic injuries
- Airway obstruction
- Open pneumothorax
- Tension pneumothorax
- Massive hemothorax
- Flail chest
- Cardiac tamponade
Secondary survey potentially lethal thoracic injuries
- Traumatic aortic rupture
- Tracheobronchial rupture
- Myocardial contusion
- Pulmonary contusion
- Traumatic diaphragmatic injury
- Esophageal injury
This classification remains useful as a teaching tool because it forces providers to think about lethal physiology before elegant diagnosis. In trauma, the first killers are hypoxia, hemorrhage, obstructive shock and loss of effective ventilation.
OPEN PNEUMOTHORAX
Open pneumothorax occurs when a chest wall wound communicates the pleural space with the external environment. If the chest wall defect is large enough, air preferentially enters through the wound rather than through the normal airway. This impairs ventilation, collapses the lung and produces hypoxemia.
Clinically, the patient may present with chest pain, dyspnea, tachypnea, a sucking chest wound, bubbling, bleeding, subcutaneous emphysema, decreased breath sounds and signs of shock if associated hemorrhage is present or if the condition progresses to tension pneumothorax.
CURRENT MANAGEMENT OF OPEN PNEUMOTHORAX
The modern TCCC 2026 recommendation is to immediately apply a vented chest seal over any open or sucking chest wound. If a vented chest seal is not available, a non-vented chest seal may be used, but the casualty must be closely monitored for the development of tension pneumothorax.
If, after applying the chest seal, the patient develops worsening hypoxia, increasing respiratory distress or hypotension, tension pneumothorax must be suspected. Management includes “burping” the seal, removing the dressing, or performing chest decompression according to provider scope, competence and protocol.
THREE-SIDED VERSUS FOUR-SIDED SEAL
For years, open pneumothorax was taught using an improvised occlusive dressing taped on only three sides, creating a makeshift one-way valve. This technique may still appear in some civilian teaching environments and improvised-care contexts when no commercial chest seal is available.
However, modern tactical practice prioritizes commercial chest seals, preferably vented, because three-sided dressings may fail due to blood, sweat, hair, movement, dirt, poor adhesion or incorrect placement.
Practical 2026 interpretation
- If a commercial vented chest seal is available, use it.
- If not available, use a non-vented chest seal and monitor closely.
- If only improvised material is available, an occlusive dressing may be used, but requires constant reassessment.
- Any seal can convert an open pneumothorax into a tension pneumothorax if it prevents air from escaping.
- Definitive management of severe open pneumothorax is chest drainage and surgical repair of the chest wall when indicated.
TENSION PNEUMOTHORAX
Tension pneumothorax is a physiological emergency. It occurs when air enters the pleural space and cannot escape, producing progressive intrathoracic pressure. This pressure collapses the ipsilateral lung, shifts the mediastinum, reduces venous return, compromises cardiac output and may lead to obstructive shock and traumatic cardiac arrest.
According to TCCC 2026, tension pneumothorax should be suspected in significant torso trauma or primary blast injury with one or more of the following findings:
- Severe or progressive respiratory distress
- Severe or progressive tachypnea
- Absent or markedly decreased breath sounds on one side
- Oxygen saturation below 90 percent
- Shock
- Traumatic cardiac arrest without obviously unsurvivable injuries
Treatment must not wait for chest radiography when the clinical picture is compatible and the patient is unstable.
NEEDLE CHEST DECOMPRESSION
TCCC 2026 recommends decompression of the affected side using a 14-gauge or 10-gauge, 3.25-inch needle catheter.
Accepted sites include:
Fifth intercostal space, anterior axillary line
or
Second intercostal space, midclavicular line
If the anterior site is used, do not insert medial to the nipple line. The needle must enter perpendicular to the chest wall and just above the superior border of the lower rib to avoid the intercostal neurovascular bundle.
In 2026, the operational trend increasingly recognizes the advantages of the fifth intercostal space at the anterior axillary line in many casualties because of lower chest wall thickness and reduced risk of medial placement error, although the second intercostal space at the midclavicular line remains accepted by TCCC.
The key is not reciting anatomy. The key is correctly identifying the landmark in a real patient: obese, bleeding, wearing equipment, in poor light, under stress or during movement.
SIGNS OF SUCCESSFUL DECOMPRESSION
According to TCCC 2026, decompression may be considered successful if any of the following occurs:
- Improvement in respiratory distress
- Audible release of air
- Increase in oxygen saturation toward 90 percent or higher
- Return of consciousness or radial pulse in a casualty previously without vital signs
If the first decompression fails, TCCC recommends performing a second decompression on the same side using the alternate site. If the casualty remains unstable, providers must reassess the diagnosis and consider contralateral injury, hemorrhage, cardiac tamponade, hypoxia, airway obstruction or hemorrhagic shock.
If the casualty is in traumatic cardiac arrest with significant torso trauma or blast injury, TCCC 2026 indicates decompression of both sides of the chest before terminating resuscitation efforts.
FINGER THORACOSTOMY AND CHEST TUBE
In trained and authorized providers, especially in prolonged casualty care, prolonged evacuation or failed needle decompression, finger thoracostomy or chest tube placement should be considered.
TCCC 2026 recognizes that refractory shock from possible unresolved tension pneumothorax may require repeated decompression, finger thoracostomy or chest tube placement at the fifth intercostal space anterior axillary line, depending on provider skill, authorization and operational context.
MASSIVE HEMOTHORAX
Massive hemothorax is the accumulation of blood in the pleural space. It can produce hypoxia by lung compression and hemorrhagic shock through intrathoracic blood loss.
In penetrating trauma, it may result from injury to intercostal vessels, lung parenchyma, internal mammary artery, great vessels or the heart. In blunt trauma, it may be associated with rib fractures, vascular injury or severe pulmonary contusion.
Clinically, the patient may present with hypotension, tachycardia, pallor, diaphoresis, dyspnea, dullness to percussion and decreased breath sounds.
Initial management includes oxygen, ventilatory support when needed, control of external bleeding, IV or IO access, hemostatic resuscitation and chest drainage in the appropriate setting.
EAST guidelines recognize that traumatic hemothorax should be considered for drainage. Retained hemothorax after tube thoracostomy may require early VATS to reduce infection, fibrothorax and delayed thoracotomy.
FLAIL CHEST AND PULMONARY CONTUSION
Flail chest occurs when a segment of the chest wall becomes mechanically disconnected because of multiple rib fractures. Classically, it is defined as fractures of three or more adjacent ribs in two or more places. Clinically, however, severity depends more on ventilation, pain and associated pulmonary contusion than on visible paradoxical movement alone.
The main problem is not only the chest wall. It is the pulmonary contusion, pain, hypoventilation, atelectasis and hypoxia.
Modern management includes:
- effective analgesia
- oxygen
- ventilatory support
- prevention of hypoventilation
- respiratory physiotherapy
- secretion control
- consideration of surgical rib fixation in selected cases
CARDIAC TAMPONADE
Traumatic cardiac tamponade is an obstructive shock emergency. It occurs when blood or fluid accumulates in the pericardial sac, compressing the heart and preventing diastolic filling.
In penetrating trauma to the cardiac box, especially stab wounds or gunshot wounds, tamponade should be suspected when hypotension, jugular venous distension, muffled heart sounds, dyspnea, tachycardia or unexplained shock are present.
Beck’s triad
- Hypotension
- Jugular venous distension
- Muffled heart sounds
However, absence of the complete triad does not exclude tamponade. In real trauma, the full triad may be absent, especially when associated hypovolemia exists.
Any penetrating injury to the cardiac box should be evaluated with bedside ultrasound when available. FAST or EFAST can identify pericardial fluid, hemothorax, pneumothorax and free abdominal fluid.
In an unstable patient with penetrating precordial trauma, ultrasound may determine whether the correct pathway is immediate operating room transfer, resuscitative thoracotomy or management of another cause of shock.
THE CARDIAC BOX
The cardiac box is a high-risk anatomical region in penetrating trauma. Although its borders vary by school, it generally includes the anterior thorax between the clavicles, midclavicular lines and costal margin or upper epigastrium.
Wounds in this area may injure the heart, pericardium, great vessels, lungs, diaphragm or liver.
Operational principle
Any penetrating injury to the cardiac box must be considered potentially lethal until proven otherwise.
A patient should not be reassured simply because he is conscious, speaking or has a small wound. Knife wounds may be small on the skin and devastating in depth.
OXYGENATION AND VENTILATION
In chest trauma, hypoxia kills.
Oxygen therapy should be administered according to clinical need and availability. In patients with respiratory distress, shock, severe thoracic trauma or suspected lung injury, high-flow oxygen with a non-rebreather mask is reasonable.
If ventilation is inadequate, respiratory rate is extreme, exhaustion develops, mental status deteriorates or hypoxia persists, bag-valve-mask ventilation and advanced airway management should be considered according to provider competence.
TCCC 2026 emphasizes the use of SpO2 and ETCO2 when available. Continuous capnography is essential for confirming airway placement, monitoring ventilation and detecting deterioration.
HEMOSTATIC RESUSCITATION
Penetrating chest trauma can produce hemorrhagic shock.
Modern resuscitation prioritizes:
- hemorrhage control
- whole blood or balanced blood components
- avoidance of excessive crystalloids
- prevention of hypothermia
- tranexamic acid when indicated
TCCC 2026 indicates TXA 2 g IV or IO slowly as soon as possible and not later than three hours after injury in casualties with hemorrhagic shock, major amputations, penetrating torso trauma, evidence of severe bleeding or significant TBI according to criteria.
SELF-INFLICTED PENETRATING CHEST TRAUMA
Self-inflicted stab wounds to the chest must be managed with the same seriousness as any penetrating thoracic trauma. They must not be minimized because of external appearance.
In addition to trauma care, they require:
- suicide risk assessment
- scene safety
- weapon control
- psychiatric intervention
- protection of the patient after medical stabilization
CLINICAL SIMULATION AND SIMULATED THORACOTOMY
High-fidelity simulation is essential for thoracic trauma training. Providers should not face these decisions for the first time on a real patient.
Simulation should include:
- identification of open chest wounds
- chest seal application
- recognition of tension pneumothorax
- needle decompression on anatomical models
- use of EFAST
- hemorrhagic shock management
- bag-valve-mask ventilation
- capnography
- evacuation decisions
- team communication
- TCCC card or clinical documentation
Realistic simulation must train error. It is not enough to recite a procedure. Providers must train under noise, poor lighting, gloves, simulated blood, screaming patients, limited equipment, multiple casualties and operational pressure.
CENTRAL TEACHING MESSAGE
In chest trauma, survival does not depend on knowing theory alone. Survival depends on rapid recognition of lethal physiology and correct technical action.
Open pneumothorax requires sealing and monitoring.
Tension pneumothorax requires immediate decompression.
Massive hemothorax requires drainage, blood and surgery when indicated.
Cardiac tamponade requires suspicion, ultrasound and surgery.
Flail chest requires analgesia, ventilation and control of pulmonary contusion.
A small wound in the cardiac box can be fatal.
UPDATED REFERENCES 2026
TACTICAL COMBAT CASUALTY CARE GUIDELINES 01 MAY 2026
https://tccc.org.ua/files/downloads/clinical-guidelines-2026-en.pdf
TCCC GUIDELINES 2026 PDF ALLOGY
https://learning-media.allogy.com/api/v1/pdf/18ccfdfc-a076-47e9-8a34-376efdd81b43/contents
MANAGEMENT OF OPEN PNEUMOTHORAX IN TACTICAL COMBAT CASUALTY CARE
BUTLER FK ET AL
JOURNAL OF SPECIAL OPERATIONS MEDICINE
https://www.naemt.org/docs/default-source/education-documents/tccc/tcccmp_1708/13-02-tccc-butler-open-pneumo-jsom-2013.pdf
MANAGEMENT OF SUSPECTED TENSION PNEUMOTHORAX IN TACTICAL COMBAT CASUALTY CARE
TCCC GUIDELINES CHANGE 17-02
https://www.naemt.org/docs/default-source/education-documents/tccc/tcccmp_1708/tccc-mp-guideline-changes/1---tccc-prop-change-1702-tension-pneumo-180411-jsom.pdf
THORACIC TRAUMA WSES AAST GUIDELINES
WORLD JOURNAL OF EMERGENCY SURGERY 2025
https://pmc.ncbi.nlm.nih.gov/articles/PMC12522690/
MANAGEMENT OF TRAUMATIC PNEUMOTHORAX AND HEMOTHORAX
CURRENT PROBLEMS IN SURGERY 2025
DOI 10.1016/J.CPSURG.2024.101707
https://www.sciencedirect.com/science/article/pii/S0011384024002685
EAST PRACTICE MANAGEMENT GUIDELINE
HEMOTHORAX AND OCCULT PNEUMOTHORAX MANAGEMENT
https://www.east.org/education-resources/practice-management-guidelines/details/hemothorax-and-occult-pneumothorax%2C-management-of
MANAGEMENT OF SIMPLE AND RETAINED HEMOTHORAX
EAST PRACTICE MANAGEMENT GUIDELINE
PUBMED
https://pubmed.ncbi.nlm.nih.gov/33487403/
ANTIBIOTIC PROPHYLAXIS FOR TUBE THORACOSTOMY PLACEMENT IN TRAUMA
TRAUMA SURGERY AND ACUTE CARE OPEN 2022
DOI 10.1136/TSACO-2022-000886
https://tsaco.bmj.com/content/7/1/e000886
PREHOSPITAL MANAGEMENT OF CHEST INJURIES CONSENSUS STATEMENT
EMERGENCY MEDICINE JOURNAL
DOI 10.1136/EMJ.2006.043687
https://pmc.ncbi.nlm.nih.gov/articles/PMC2660039/
SPONTANEOUS PNEUMOTHORAX
BMJ 2014
DOI 10.1136/BMJ.G2928
https://www.bmj.com/content/348/bmj.g2928
BRITISH THORACIC SOCIETY GUIDELINE FOR PLEURAL DISEASE
THORAX
https://thorax.bmj.com/content/78/Suppl_3
OPEN CHEST WOUND THREE SIDED OR FOUR SIDED SEAL DISCUSSION
https://www.siriusmedx.com/en_CA/blog/instructor-s-blog-5/open-chest-wound-four-sided-or-three-sided-seal-39
EMS SOLUTIONS INTERNATIONAL RELATED POSTS
BECK TRIAD IN CARDIAC TAMPONADE
https://emssolutionsint.blogspot.com/2024/05/triada-de-beck-en-taponamiento-cardiaco.html
TENSION PNEUMOTHORAX DECOMPRESSION
https://emssolutionsint.blogspot.com/2016/07/descompresion-de-neumotorax-tension.html
COMMON ERRORS IN NEEDLE DECOMPRESSION FOR TENSION PNEUMOTHORAX
https://emssolutionsint.blogspot.com/2023/01/poder-recitar-un-procedimiento-en.html
CHEST TRAUMA DEADLY DOZEN
https://emssolutionsint.blogspot.com/2013/01/penetrating-chest-trauma-photo-trauma.html
OPEN PNEUMOTHORAX THREE SIDED VS FOUR SIDED SEAL
https://emssolutionsint.blogspot.com/2015/10/pneumotorax-abierto-sellar-3-lados-vs-4.html
SAM MEDICAL THORASITE ANATOMICAL LANDMARK GUIDE
https://emssolutionsint.blogspot.com/2023/05/sam-medical-thorasite-guia-anatomica-de.html
TCCC SPANISH AND UPDATED GUIDELINES
http://emssolutionsint.blogspot.com/2012/07/presentacion-del-programa-phtls-tccc.html
TCC LEFR
http://emssolutionsint.blogspot.com/2017/09/curso-tcc-lefr-tactical-casualty-care_4.html
TECC SPAIN
http://emssolutionsint.blogspot.com/2017/09/curso-tecc-espana-28-septiembre-2017.html
TACMED SPAIN
http://emssolutionsint.blogspot.com/2017/09/tactical-medicine-tacmed-espana-by-ems.html
STOP THE BLEED BCON
http://emssolutionsint.blogspot.com/2017/07/stop-bleed-bleeding-control-basic.html
HARTFORD CONSENSUS
http://emssolutionsint.blogspot.com/2016/07/the-hartford-consensus-iv-compendium.html
TACTICAL MEDICS VS RESCUE TASK FORCE
http://emssolutionsint.blogspot.com/2018/03/tactical-medics-vs-rescue-task-force.html








































