Trauma Management and Penetrating Neck Injury (PNI) Review

Flashcards covering trauma resuscitation basics (ABCDE), penetrating neck injury (PNI) signs, diagnostic imaging, and the three anatomical zones of the neck.

What mnemonic is used to summarize the components of the initial trauma evaluation?

ABCDE (Airway, Breathing, Circulation, Disability, Expose/exam)

Under what condition should intubation be performed as soon as safely possible in a patient with PNI?

As soon as there is evidence of airway compromise, because the anatomy can rapidly become distorted.

What is the preferred method for intubation in trauma if there is limited anatomical distortion?

Rapid sequence intubation

When should awake intubation be considered in trauma management?

When there is concern for a difficult airway, as it allows the patient to continue spontaneous respirations.

According to the transcript, which surgical airway procedure is preferred due to having fewer complications?

Cricothyrotomy

Why is a chest X-ray critical for gunshot wounds to the neck?

Because bullets have an unpredictable trajectory and may cause intra-thoracic injury.

What is considered the most effective method for immediate hemorrhage control in trauma?

Direct pressure, specifically a gloved hand placed directly on the wound.

Which algorithm does the United States military use that prioritizes massive hemorrhage control over airway?

MARCH algorithm

What are the three components of the Glasgow Coma Scale (GCS) and their respective maximum point values?

Motor ($6$ points), Verbal ($5$ points), and Eye ($4$ points)

At what Glasgow Coma Scale (GCS) score should intubation be considered due to the patient's inability to protect their airway?

$8$ or below

According to a systematic review, what percentage of gunshot wound patients had a cervical fracture?

Just over $1\%$

How is a penetrating neck injury (PNI) defined?

A penetrating injury that violates the platysma (the outermost layer of muscle in the neck).

Why should a penetrating neck wound be examined but NOT probed?

Probing may cause further bleeding and damage.

What are the "hard signs" of neck injury that indicate a need for immediate surgery?

Expanding or pulsatile hematoma, radial pulse deficit, air bubbling in the wound, uncontrolled hemorrhage, bruits or thrills, shock despite volume resuscitation, massive hemoptysis or hematemesis, respiratory distress, and neurologic deficit.

How can a Foley catheter be used for hemorrhage control in a non-compressible site like the subclavian artery?

It is inserted along the wound tract, filled with $10-15\,ml$ of normal saline, clamped, and sutured prior to definitive management.

What are the "soft signs" of a neck injury?

Minor hemorrhage, dysphagia, dysphonia, wounds in close proximity to major vessels, hypotension responsive to volume resuscitation, mediastinal or subcutaneous air, non-expanding hematoma, and low volume/minor hemoptysis or hematemesis.

What is the imaging modality of choice for identifying traumatic injury in patients with "soft signs"?

CT angiogram of the neck, ideally a multidetector CT (MDCT-A).

What is the leading cause of delayed mortality in PNI patients, and what is the sensitivity of MDCT-A for detecting it?

Esophageal injury; it has a sensitivity as low as $53\%$ for this specific injury.

Describe the anatomical boundaries and key structures of Zone 1 of the neck.

Begins at the clavicles and ends at the cricoid cartilage; contains the aortic arch, subclavian vessels, lung apices, thoracic duct, trachea, and esophagus.

Describe the anatomical boundaries and significance of Zone 2 of the neck.

Extends from the cricoid cartilage to the angle of the mandible; it contains the carotid and vertebral arteries, esophagus, jugular veins, and trachea, and is the most frequently injured zone.

Describe the anatomical boundaries of Zone 3 of the neck.

Starts at the angle of the mandible and ends at the base of the skull.