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NECK TRAUMA. Neck Trauma. 5-6% as isolated injury Fatality rates: stab wounds 1-2% gunshot wounds 5-12% rifle/shotgun 50% preventable deaths 50%. Blunt Trauma Diving injuries Assault Vehicular crashing into windshield /steering wheel seat belt whiplash “clothesline”. Penetrating
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Neck Trauma • 5-6% as isolated injury • Fatality rates: • stab wounds 1-2% • gunshot wounds 5-12% • rifle/shotgun 50% • preventable deaths 50%
Blunt Trauma Diving injuries Assault Vehicular crashing into windshield /steering wheel seat belt whiplash “clothesline” Penetrating Assault stab wounds gunshot wounds Vehicular broken glass Causes of Neck Trauma
Zones of the Neck • Zone I • highest mortality • Zone II • most frequent site of injury • lower mortality • Zone III • neurological • distal carotids • pharyngeal injuries
Blunt Neck Trauma • Frequently involves C5-C6 • Rescue/ transport • neck immobilization • avoid intubation in symptomatic/ high risk • Neurologic injury
Penetrating Neck Trauma • 70 - 80% of injuries • vascular/aerodigestive tract injury • Hemorrhage • 20-30% • Mortality • 5-6 %
Signs of Significant Injury in Penetrating Neck Trauma • VASCULAR INJURY • Shock • Active bleeding • Large/expanding hematoma • Pulse deficit
AIRWAY INJURY • Dyspnea • Stridor • Hoarseness • Dysphonia or voice change • Subcutaneous emphysema
DIGESTIVE TRACT INJURY • Hemoptysis • Dysphagia/odynophagia • Hematemesis • Subcutaneous emphysema
Injured Structures from Penetrating Neck Wounds • SYSTEM INJURED PATIENTS(%) • Arterial 516 (12.3) • Venous 769 (18.3) • Digestive 354 ( 8.4) • Respiratory 331 ( 7.8) • Source: Adapted from JA Asensio, et al. Management of Penetrating Neck Injuries: The Controversy Surrounding Zone II Injuries In JA Asensio and JA Weigelt (eds.), The Surgical Clinics of North America Contemporary Problems in Trauma Surgery. 71:2, 1991;
Initial Care • ABCs of Trauma Resuscitation • ventilation • treatment of shock • baseline neurologic exam
Spontaneous respiration conscious stridor tachypnea dyspnea frothing No respiration intubate airway obstruction shock Airway Assessment
Hemorrhage/ Shock • Control bleeding • direct digital pressure • occult bleeding • hemothorax - CTT • Venous access • fluid replacement/ blood • central line
Time factor Manner of injury Pre-existing disease Vital signs location/ extent of injury neurologic deficit ? probing History/ Physical Exam
Presentation • - GSW, POE: L supraclavicular, No POX, Hemorrhagic shock • - hacking wound to the neck with external bleeding; shock • - punctured wound to the neck, stable vital signs • - punctured wound to the neck. stable VS, suddenly develops dyspnea
Presentation • - 1.5 cm stab wound zone II, stable vital signs with subcutaneous emphysema • - punctured wound,nape, in hypovolemic shock, unable to move or feel LLE
Mandatory Exploration • negligible m/m for (-) exploration • comparative cost of work-up • 17-25% (+) exploration in asymptomatic patients • 83% significant injury in transcervical gunshot wounds • high mortality for delayed operations: • 67% for vascular injury • 44% for esophageal injury
Selective Exploration • 40-60% incidence of negative exploration • medical cost of unnecessary surgery • availability of accurate, non-invasive diagnostic facilities • mandatory exploration based on high velocity military injuries
Rules on Exploration • All symptomatic patients are explored • Work-up is irrelevant in the presence of clinical signs of injury • Zone I injuries liberally explored • difficult vascular control • disastrous consequences with delay
Diagnostic work-up • Angiography • gold standard for vascular injury • more in Zones I and III • Esophagography • water soluble/ barium contrast • 50-90% sensitivity • Esophagoscopy • 50-90% sensitivity • rigid / flexible
Surgical Management • Vascular injuries • Carotid Artery • blunt injury - 20-40% mortality • permanent neurologic impairment in 40-60% • repair or ligation of penetrating lacerations • comatose patients • acute stroke after revascularization
Vascular injuries • Vertebral artery • hyperextension/rotation • chiropractic manipulation • soccer/volleyball injury • heavy metal rock music • Usually diagnosed angiographically • thrombosis/hemorrhage
Esophagus • Difficult diagnosis • clinically evident in 20-30% • exponential increase in MR with late diagnosis, 100% if undiagnosed • Primary repair when feasible • cutaneous pharyngostomy/ esophagostomy
Subcutaneous emphysema, hoarseness,respiratory distress debridement reduction of fractures coverage of exposed cartilage closure of tracheal defects tracheostomy Larynx and Trachea