External bleeding is probably the easiest of the two to manage. External bleeding is visible, and we have a host of tools and techniques available to us to stop external blood loss quickly and effectively.
Step 1: Identify the source of the bleeding – this may not always be obvious if it is dark; if the casualty is wearing clothing or coveralls, or if the bleeding is in an anatomical location that you cannot immediately see.
Top Tip: Always check their back, groin and under the armpits!
Step 2: Try to apply direct pressure. Direct pressure needs to be firm and focused. Ideally this should be done with a gloved hand and may be used temporarily, while someone else finds kit/dressings in the First Aid Kit. For small wounds, such as a burst varicose vein, the direct pressure may be as simple as one finger tip.
Top Tip: Before applying pressure to a wound, always have a quick look to ensure there is no foreign object embedded in the wound, such as a piece of broken glass!
Step 3: Transition the pressure. It’s blooming hard work to maintain manual direct pressure on a bleed for any length of time! It is also not ideal from a logistical point of view, especially if you need to move the patient. Modern pressure dressings are exceptional at maintaining focused pressure on a wound when applied correctly, though this transition is likely to be a 2-person job.
The Olaes bandage is highly effective and will control almost all external bleeds.
(Watch this space for a how-to guide on the Olaes many uses - we love them almost as much as triangular bandages!)
Top Tip: Pressure dressings are simple to use – but only if you know how! Make sure you’re familiar with your kit before you have to use it in an emergency.
Step 4: If the bleed is so severe that a pressure dressing is not controlling the bleeding, then an arterial tourniquet may be required. Tourniquets are used to entirely stop the blood flow to a limb. They are placed just above the wound (between the wound and the heart) and are tightened until all bleeding stops. Once applied, seek immediate topside support regarding next steps!
There may be certain situations where you approach a patient and blood is literally hosing out. Under these circumstances, it may be appropriate to use a tourniquet as the first line of defence.
Top Tip: A genuine arterial tourniquet such as the Combat Application Tourniquet (CAT) costs approximately £30. They cost this much for a reason; because they are tried, tested and manufactured according to strict quality assurance processes. You can buy a fake CAT tourniquet online for £2.99, but you run the risk of it breaking when you most need it. Avoid cheap, fake tourniquets – lives depend on the quality of your kit.