Ambulance
Winter2016
Winter2016
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Clinical Focus on Transferring Facial Injuries<br />
v) Finally, does the patient need to be<br />
transferred with full spinal protection? If<br />
so intubation prior to transfer should be<br />
considered.<br />
Assessing the airway - Although a talking<br />
patient is encouraging, when facial injuries<br />
are evident this is no safeguard against<br />
airway threats. The mouth and throat should<br />
always be inspected. Oral and nasal bleeding<br />
can continue unseen. Foreign and loose<br />
bodies (especially dentures and detached<br />
teeth) should be removed. Unfortunately,<br />
correctly fitting rigid collars restrict mouth<br />
opening and make assessment difficult,<br />
but if the potential for airway compromise<br />
exists, these should be loosened enough to<br />
enable examination (during which, in-line<br />
manual immobilisation of the neck can be<br />
performed).<br />
If the risk of spinal injury is considered low,<br />
the airway is best managed by allowing<br />
the patient to position themselves upright,<br />
thereby maintaining their own airway<br />
patency. However, following high-energy<br />
trauma, the presence of actual or potential<br />
injuries elsewhere may preclude this<br />
approach and the airway may need to be<br />
secured prior to transfer. The presence<br />
of coexisting brain injury and the need<br />
to maintain effective ventilation are other<br />
important considerations.<br />
Current guidelines for intubation in<br />
maxillofacial injuries are a little vague and<br />
can be misleading. For example, bilateral<br />
fractures of the mandible are a common<br />
injury, frequently cited as an indication for<br />
intubation. But they rarely require this. It is<br />
only when they occur in combination with<br />
a reduced Glasgow coma scale (GCS) or<br />
spinal immobilisation that they become a<br />
significant risk. Other indications related<br />
specifically to facial trauma would include<br />
i) when gross swelling is anticipated, ii) in<br />
order to facilitate control of haemorrhage<br />
or iii) in ‘significant’ facial injuries where a<br />
long duration transfer is expected. However,<br />
the definition of ‘significant’ requires clinical<br />
judgement on a case-by-case basis and is<br />
often based on the mechanism of injury.<br />
If all else fails advanced airway management<br />
techniques may be necessary, including<br />
surgical airways. These are well described<br />
elsewhere and are therefore not detailed<br />
here.<br />
2 B (breathing). Aside from the need for<br />
oxygen administration and monitoring,<br />
breathing problems are rarely associated<br />
with facial trauma. However avulsed teeth<br />
and dentures can be occasionally aspirated,<br />
resulting in partial blockage of the bronchial<br />
tree. This should be considered in any<br />
patient with isolated facial injuries but<br />
who appears to have asymmetric signs of<br />
respiration.<br />
3 C (circulation). Life-threatening blood<br />
loss arising from scalp lacerations and facial<br />
injuries is relatively uncommon, although<br />
bleeding can still be significant, especially in<br />
children.<br />
Winter 2016 | <strong>Ambulance</strong>today<br />
i) In the hypotensive patient, active<br />
bleeding may be minimal when first<br />
encountered, and it is only when the blood<br />
pressure improves during resuscitation<br />
that bleeding, both obvious and occult,<br />
recommences. This may have significant<br />
implications with transfers.<br />
ii) Blood loss from occipital scalp<br />
lacerations and even relatively ‘minor’ facial<br />
injuries such as nasal fractures can be missed<br />
in supine immobilised patients and although<br />
haemorrhage may not necessarily be rapid, it<br />
may continue uncontrolled over a prolonged<br />
period of time.<br />
A large scalp laceration. Unless pressure is applied<br />
this would result in significant blood loss. Care<br />
would be required with tight dressings, in case<br />
there were large skull fractures underneath.<br />
iii) Control of haemorrhage can be very<br />
difficult, even within the relative safety of<br />
the emergency department. Intubation<br />
may often be required in order to facilitate<br />
effective control. This takes the form of<br />
packing of the oral cavity and nose - the<br />
latter of which is a concern if skull base<br />
fractures are present. Nevertheless, some<br />
form of tamponade is required and<br />
the patient should not be left to slowly<br />
exsanguinate on the basis of a perceived risk.<br />
This is a very difficult area of clinical practice.<br />
iv) Packing of the oral cavity also<br />
requires unrestricted access to the oral<br />
cavity, necessitating the unfastening of the<br />
cervical collar - the cervical spine must<br />
remain carefully immobilised, making this (at<br />
the least) a two person job.<br />
v) Actively bleeding cutaneous wounds,<br />
such as the scalp, can simply be closed with<br />
staples, any strong suture to hand, or by<br />
applying a pressure bandage.<br />
vi) Epistaxis, either in isolation or<br />
associated with midface fractures, may be<br />
controlled using a variety of specifically<br />
designed nasal balloons or packs. These<br />
must be used with care if there are mobile<br />
midface fractures - overpacking can distract<br />
the fractures further resulting in further<br />
tissue damage and bleeding. Nasal packs<br />
are not without risk - toxic shock, sinusitis,<br />
meningitis, and brain abscess are all potential<br />
complications. Blindness has also been<br />
reported.<br />
If haemorrhage persists despite these<br />
interventions, it is important to consider<br />
pre-existing or acquired coagulation<br />
abnormalities; only rarely is operative<br />
surgical control of facial bleeding required<br />
in theatres during the primary survey<br />
(following blunt trauma).<br />
4 D (disability). By virtue of their close<br />
proximity to the skull, high energy facial<br />
fractures are frequently associated with<br />
varying degrees of brain injury or disruption<br />
of the skull base. Therefore it is important<br />
that the Glasgow Coma Scale or AVPU<br />
score is carefully noted and regularly<br />
reassessed. The management of patients<br />
with coexisting head injuries is not discussed<br />
in this article. Interestingly, the geometry of<br />
the facial skeleton has been likened to the<br />
chassis of a car. At the moment of impact,<br />
horizontal struts of bone “buttresses”<br />
collapse, thereby preventing the kinetic<br />
energy being transferred to the brain (the<br />
‘driver’). Effectively, it is argued, the facial<br />
skeleton has evolved into a ‘‘crumple<br />
zone’’. Despite this survival advantage, the<br />
combination of extensive vascularity of the<br />
face and its lack of deep fascia can still result<br />
in significant blood loss and swelling.<br />
E (eyes) - Although “E” normally refers to<br />
exposure, from a maxillofacial perspective<br />
visual loss is the next priority once i) the<br />
airway has been secured, ii) facial bleeding<br />
controlled and iii) any significant brain<br />
injury treated or excluded. Arguably, visionthreatening<br />
injuries are just as important to<br />
the patient as limb-threatening problems,<br />
especially if they involve both eyes. Early<br />
identification of sight-threatening conditions<br />
may be possible when the pupils are<br />
assessed along with the GCS. At this time<br />
the vision can be checked and obvious<br />
ocular findings can be noted. At the<br />
roadside, vision-threatening injuries that<br />
need rapid identification are perforated or<br />
ruptured globes, significant bulging of the<br />
eye (proptosis - in essence a compartment<br />
syndrome of the eye socket), and loss of<br />
eyelid protection. Whilst other conditions<br />
exist, there is little that can be done at<br />
this stage. Useful symptoms and signs of<br />
significant globe injury include.<br />
i) Loss of vision<br />
ii) Severe pain in or around the eye<br />
iii) An agitated patient with signs of injury<br />
around the eye<br />
iv) Significant proptosis of the globe<br />
A real skull,<br />
showing how<br />
fragile many of<br />
the bones of<br />
the face are.<br />
Light can easily<br />
pass, especially<br />
though the orbits<br />
and anterior<br />
skull base’.<br />
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