Trauma treatment and ABCDE method

In a serious traffic accident or other violent accident there are often many impressions at once: broken glass, blood, loud sounds, panic from those involved. In that situation it is easy to be distracted by what is most visible — but what looks most dramatic is not always what kills the patient first. Therefore the ambulance service works according to a fixed, practiced sequence: the ABCDE method.

§What do the letters stand for

ABCDE algorithm comes from Advanced Trauma Life Support (ATLS) and is further developed for the prehospital field through Prehospital Trauma Life Support (PHTLS). The method is used in Danish treatment guidelines and in ambulance training, precisely because it gives all healthcare professionals — regardless of experience — the same systematic approach to fall back on under pressure.

§The sequence is not random

The principle behind ABCDE is to always direct attention to what is killing the patient fastest. A blocked airway kills in minutes, lack of breathing likewise, while major internal bleeding can take a bit longer — but still shorter than a head injury that develops over hours. That's why A is addressed before moving on to B, and B before moving to C, and so on. Under the PHTLS approach, emphasis is placed on the first pass through A, B and C being completed in about 30 seconds, after which a decision is made as to whether the patient is critical or non-critical, and whether rapid transfer to hospital is needed rather than further on-site treatment.

§Bleeding control and damage control

For heavy external bleeding, direct pressure pressure dressing and in some cases tourniquet often are what really save lives in the first minutes — you work with this already at C in the algorithm and in certain cases even before A and B if massive bleeding is immediately visible and life-threatening. The thinking behind modern prehospital trauma care is often called damage control: you stabilize what is most critical on scene but do not spend unnecessary time on what can wait until hospital because that time should instead be spent on quick and safe transport to definitive care.

§Your systematics is the patient's safety

For you as an ambulance handler it means you must be able to perform the ABCDE survey even when adrenaline pumps bystanders shout or multiple patients need attention at once. The better you have practiced the sequence the less likely you are to miss something critical — and the easier it is to give a clear and structured handover when you arrive at the hospital.

§Secondary examination — when the acute phase is under control

When the primary ABCDE review has caught and handled the immediately life-threatening a more thorough secondary examination follows if time and the patient's condition allows. Here the patient is examined more systematically from head to toe for injuries that are not immediately life-threatening but still require treatment or are important to know about when the patient moves to the hospital – for example suspected fracture minor wounds or tenderness that may point to hidden injuries.

Trauma treatment ultimately is about combining fixed systematics with ability to quickly respond to new findings. A scenario can look stable initially and change abruptly and that is precisely why ABCDE is not one-time review but approach you return to as long as patient is in your care