The zones tell you where the hole is. They do not tell you where the injury is.

This is the single most important disagreement in this module, and this tool does not resolve it.

The RCS review's Box 1 is headed “‘Hard signs’ indicating immediate explorative surgery in penetrating neck injury” and lists: shock; pulsatile bleeding or expanding haematoma; audible bruit or palpable thrill; airway compromise; wound bubbling; subcutaneous emphysema; stridor; hoarseness; difficulty or pain when swallowing secretions; neurological deficits. EAST's problem statement uses a near-identical list, including subcutaneous emphysema and hoarseness.

The North of Scotland major trauma guideline splits them differently. Its hard signs are active haemorrhage, pulsatile or expanding haematoma, bruit or thrill, haemodynamic instability, unilateral upper limb pulse deficit, massive haemoptysis or haematemesis, air bubbling in the wound, airway compromise, cerebral ischaemia. Its soft signs — non-pulsatile, non-expanding haematoma, venous oozing, dysphagia, dysphonia, subcutaneous emphysema — include three findings the RCS review calls hard.

Why it matters at the bedside

Under the RCS list, an alert patient with a hoarse voice and some surgical emphysema goes straight to theatre. Under the Scottish list, the same patient gets an immediate CT angiogram. Both are defensible: the RCS list is protective of the aerodigestive injuries that imaging misses, and the Scottish list reflects that these signs are frequently present without an injury needing repair.

This tool lists a sign as hard only where the sources agree, and flags the three disputed ones inline. If you select a disputed sign alone, the result says so and gives you both branches. Your local trauma protocol is the tiebreaker, and it is the one you will be audited against.

One asymmetry is worth noticing: the Scottish guideline sends hard signs and soft signs to immediate CTA — “Perform immediate CTA Neck in patients with hard signs not requiring emergency surgery” and “Perform immediate CTA Neck in patients with soft signs.” So under that guideline, misclassifying a sign as soft does not mean doing nothing. It means scanning instead of operating.

The RCS review frames it as two questions: does the patient need immediate airway protection, and what is the best technique here. Clinical signs of airway injury are hoarseness, stridor, dyspnoea, subcutaneous emphysema in the absence of a pneumothorax, bubbling from the wound and large-volume haemoptysis.

What is different about a penetrating neck airway

• Avoid techniques without direct visualisation. Blind placement “can create a false lumen outside the trachea or convert a partial tracheal laceration into a complete transection”. This is the sentence to remember.
• Bag-mask ventilation is not free. Pre-oxygenating or rescuing “must be done with vigilance, as it may force air into injured tissue planes and distort airway anatomy or further disrupt surrounding soft tissue injury”.
• Threatened airway, anatomy preserved → rapid sequence intubation. The review recommends this and cites major trauma centre series supporting it as safe and effective.
• Anatomy distorted and intubation predicted difficult → fibreoptic intubation, which also lets you inspect the supraglottic and infraglottic airway with the patient breathing spontaneously. It needs a cooperative patient, which is often exactly what you do not have.
• Be set up for failure before you start: at least two suction devices, a range of tube sizes, rescue airway devices and a surgical airway kit.

Surgical airway

Immediate indications are massive upper airway distortion, massive midface trauma, and inability to visualise the glottis because of heavy bleeding, oedema or anatomical disruption. “We recommend cricothyrotomy as the first surgical airway of choice, as it is the most direct, simple and safe way of bypassing upper airway obstruction or injury.”

With one significant caveat specific to this injury: cricothyroidotomy “may be difficult in the presence of distorted neck anatomy or if an anterior neck haematoma or laryngeal injury is suspected and carries potential risk to the vocal cords.” Tracheostomy is the answer for skeletal collapse, significant structural airway disruption, or partial or complete transection of the larynx or trachea. “The tracheotomy incision should be made as low in the neck as possible to avoid further injury to the laryngotracheal complex,” with a vertical cervical incision so it can be extended inferiorly. Tracheostomy is also “the primary cause of long-term laryngotracheal complications” even in experienced hands, so it is done when indicated, not by default.

“Cervical spine immobilisation is not routinely recommended in penetrating neck injuries.” The reasoning is that the incidence of unstable cervical spine fractures after penetrating injury is very low, while a collar obscures the clinical signs you are relying on and impairs intubation. One cited series reported an increased risk of death with immobilisation in penetrating cervical trauma.

EAST reached the same conclusion through its formal process, at Level 2: “Immobilization of the cervical spine is unnecessary unless there is overt neurologic deficit or an adequate physical examination can not be performed, e.g., the unconscious victim.”

The exceptions

• Focal neurology.
• High clinical suspicion of spinal injury in a patient who is unconscious or heavily intoxicated — i.e. you cannot examine them.
• High-energy mechanism. Cervical spine injury risk “has been demonstrated to be significantly different depending on the mechanism of injury”: gunshot wounds and blunt force such as a road traffic collision carry higher risk and immobilisation needs to be considered. A low-velocity stab wound does not — spinal cord injury occurs in under 1% of these.

“As exsanguination accounts for up to 50% of the mortality from penetrating neck injuries,” the review argues clinicians should know the holding measures. The escalation is direct pressure, then haemostatic dressings, then balloon tamponade.

The technique, as described

• Introduce a Foley catheter into the wound, following the wound track.
• Inflate the balloon “with 10–15 ml of water until resistance is met”.
• Clamp the catheter — or knot it on itself — to stop blood flowing out through the lumen.
• Suture the neck wound closed around the catheter.

“This is a well-recognised technique for temporarily arresting bleeding and can sometimes avoid the need for emergency surgery.” If compression or balloon tamponade controls the haemorrhage, the patient can go to angiography to identify the source before operative or endovascular intervention — which converts a crash laparotomy-equivalent into a planned procedure.

Cervical oesophageal injuries are less common, because the oesophagus sits centrally and protected. That is exactly what makes them dangerous: “These are often silent injuries with no findings on clinical examination.” EAST puts it as a Level 3 recommendation — “Physical examination is inadequate to rule out injuries to the aerodigestive tract.”

And CT angiography, the study the whole no-zone approach rests on, is the weakest here. Its sensitivity for pharyngo-oesophageal injury has been reported “to be as low as 53%”. Coupled with a mortality around 20%, that is why a normal CTA is not the end of the assessment in a patient whose trajectory or symptoms raise the question.

The add-on pathway

Contrast swallow first; flexible oesophagoscopy if that is non-diagnostic, with a sensitivity close to 100%. EAST's Level 2 recommendation treats the two as interchangeable rather than sequential: “Either contrast esophagography or esophagoscopy can be used to rule out an esophageal perforation that requires operative repair.”

Two different clocks — and this is a genuine conflict

The RCS review: “Patients presenting within 12 hours of injury may undergo direct suture repair and drainage. After 12 hours of injury, morbidity and mortality increases and direct repair is less likely to be successful.” After that window, debridement and drainage with planned delayed repair.

EAST: “Diagnostic workup should be expeditious because morbidity increases if repair is delayed by more than 24 hours.”

These are not the same number, and neither source acknowledges the other's. The safe reading for an ED clinician is the shorter one — it is the more conservative, and nothing follows from treating a 12-hour target as the deadline except getting the diagnosis faster. Do not let the existence of a 24-hour figure become a reason to slow down.

All patients with suspected oesophageal injury: nil by mouth, intravenous antibiotics, and surgical nutrition. Untreated, these cause mediastinitis, abscess or empyema.

Not an ED decision, but knowing the destination changes who you call and how urgently.

• Carotid: repair beats ligation, and the striking part is that this holds “irrespective of whether or not a preoperative focal neurological deficit was present”. EAST agrees at Level 2: internal carotid injuries “should be repaired, even when severe neurologic deficits are present”, excepting minimal intimal irregularities and small pseudoaneurysms without deficit. A dense hemiparesis is not a reason to write off the artery.
• Vertebral artery: interventional radiology, not the knife. “Angiographic approaches to the vertebral artery are preferred to operative approaches for patients with bleeding from vertebral artery injuries.”
• Jugular vein: “Isolated jugular venous injuries are generally innocuous as the low-pressure venous system usually tamponades or occludes without major haemorrhage.” Ligation is appropriate for complex injuries or unstable patients.
• Zone I needs the chest team early. Treatment may require a sternotomy or thoracotomy to gain proximal control. The Scottish guideline says the same: “Some Zone 1 injuries will require a thoracotomy for proximal control.”

If a laryngotracheal injury is suspected, panendoscopy and bronchoscopy under general anaesthesia should come before surgical exploration. Small mucosal defects and undisplaced laryngeal fractures can be managed conservatively; significant skeletal fractures need open repair.

Mechanism worldwide, in order: stab wound from violent assault, then gunshot wounds, self-harm, road traffic collisions and other high-velocity objects.

A caveat about where this evidence comes from, rather than a claim about UK epidemiology. Much of the literature underpinning both the zonal and the no-zone approach is drawn from centres in the United States and South Africa, and the reference lists show it — Groote Schuur, Johannesburg, Cook County. Gunshot wounds carry roughly 50% risk of significant injury against 10–20% for stab wounds, so a case mix weighted differently from your own changes the pre-test probability behind every figure on this page. None of these sources reports UK mechanism proportions, so this module does not assert any.

• It does not give you a discharge rule. None of the three sources provides a validated criterion for sending a platysma-breaching neck injury home from the ED. The nearest thing in the literature is observation, and one cited series notes that “observation for up to 48 hours may be necessary”. Disposition here is a surgical decision.
• It does not cover children separately, because the evidence does not. EAST states plainly: “There is little data on selective management of penetrating neck injuries in children,” with small studies suggesting a selective strategy is safe. The RCS review does not address paediatric practice at all. Everything on this page should be read as describing adult practice, and a child with a penetrating neck injury needs the paediatric surgical and anaesthetic team, not an extrapolation from this page.
• It does not use the zone to decide imaging. That is the whole argument of the no-zone approach, and implementing it any other way would misrepresent the source.
• It does not settle the hard/soft sign disagreement. See the first reference panel.

The population warning is not decorative. Across this estate, the commonest audit finding by some margin has been a tool that quietly assumed adults and then handed a confident number to a paediatric case.

• Nowicki JL, Stew B, Ooi E. Penetrating neck injuries: a guide to evaluation and management. Annals of the Royal College of Surgeons of England 2018;100(1):6–11. doi:10.1308/rcsann.2017.0191. PMID 29046084. A literature review in the College's journal, not a College guideline — see the note at the top of this page. Open access via PubMed Central (PMC5849205).
• North of Scotland major trauma guidelines (NHS Grampian), Penetrating neck injury. Published on NHS Scotland Right Decisions. A short operational UK guideline; the source of the hard/soft sign split used here and of the “immediate CTA for soft signs” rule.
• Tisherman SA, Bokhari F, Collier B, et al. Clinical Practice Guidelines: Penetrating Neck Trauma. Eastern Association for the Surgery of Trauma, 2008. A formal guideline with graded recommendations, but scoped to zone II and now over fifteen years old. Cited here for its Level 1–3 recommendations and its evidence tables.
• NICE NG41, Spinal injury: assessment and initial management. Cited for what it does not say.

Every quotation on this page is verbatim from the source named beside it. Where two sources conflict, both are quoted rather than reconciled.