A haemostatic dressing is a material that helps control bleeding locally at an accessible injury. Haemostatic gauze combines a strip of gauze with a component that promotes bleeding control. It is used for severe external bleeding that can be compressed and must reach the actual bleeding source; firm direct pressure is part of its application. In Combat Survival, it provides immediate self-aid or buddy aid before further treatment, particularly for suitable wounds where a limb tourniquet cannot be used.
How the gauze supports bleeding control
Plain gauze absorbs blood, transfers pressure from the hand and can fill a suitable wound space. Bleeding control depends on effective pressure against the injured site and the body's own clotting process. A dressing that simply becomes soaked while blood continues to escape has not achieved this. The added coating on haemostatic gauze acts where it contacts escaping blood or injured tissue. Material placed loosely across the opening cannot adequately reach a deeper bleeding source.
Combat Gauze incorporates kaolin. The surface of this mineral activates coagulation Factor XII, accelerating part of the body's clotting cascade and supporting clot formation at the injury. Celox Rapid has a different mechanism: activated chitosan components adhere to wet wound tissue and form an adhesive gel that helps seal the bleeding site. Both materials require correct placement; the active component in a packet does not replace pressure or checking whether the bleeding has stopped.
Local bleeding control does not return blood already lost to the circulation. After major blood loss, circulatory and clotting problems can persist even when no fresh blood is escaping externally. Deterioration despite bleeding control requires consideration of other external and possible internal injuries.
Which bleeding sources can be reached
A suitable injury has external bleeding to which pressure can be transmitted. In an appropriate deep soft-tissue wound, packing brings gauze and pressure to the bleeding source. This can matter in certain groin or armpit injuries: the bleeding lies at the junction with the torso, beyond the area a normal arm or leg tourniquet can effectively compress. Life-threatening bleeding from an anatomically suitable arm or leg remains a tourniquet indication; prolonged attempts with gauze must not delay use of an available tourniquet the person knows how to apply.
An opening in the chest or abdomen is not an instruction to pack material into a body cavity. A visible opening may lead to internal blood vessels and organs that surface pressure cannot reach. Haemostatic gauze does not treat that internal bleeding. The European Celox Rapid instructions explicitly exclude abdominal wounds and packing into body cavities. The material must also be kept away from an injured eye. An embedded object stays in the wound; apply pressure around it without pushing it farther in or pulling it out.
Immediate action and appropriate wound packing
Apply firm direct pressure immediately to a reachable, heavily bleeding external wound as soon as the threat allows. Without a dressing, the person's own hand can provide pressure; if a clean cloth or suitable fabric is at hand, press it directly against the bleeding site. Missing gloves or a search for a special packet must not postpone self-aid. Do not start by washing a heavily bleeding wound. Keep the hand pressing rather than lifting it repeatedly to look.
Packing with available haemostatic gauze requires training in that product's use and the ability to recognise a suitable external wound. After opening the packet, bring one end of the gauze directly to the identified bleeding source. Maintain pressure there while tightly filling the appropriate wound space so that subsequent hand pressure actually reaches the bleeding site. With Celox Rapid, remaining space can be filled with more product gauze or plain gauze above skin level. Do not blindly explore an unknown stab or gunshot tract with fingers or tools, or pack it merely because it is deep. A person unable to identify the wound or perform the application reliably maintains effective external pressure.
Pressure duration belongs to the particular product and care procedure. Combat Gauze specifies three minutes of pressure or pressure until bleeding stops. The US TCCC procedure requires at least three minutes of direct pressure for haemostatic dressings. The European Celox Rapid packet specifies firm pressure for one minute or until bleeding stops if bleeding persists. This does not create a one-minute rule for other gauze or shorten the TCCC procedure. If fresh blood continues to escape, maintain pressure and reassess bleeding control. Once control is achieved, an appropriate pressure dressing maintains pressure and holds the gauze in place.
When bleeding continues
Fresh blood flowing past the gauze, rapidly increasing blood soaking through the dressing or renewed bleeding after movement indicate inadequate control. First restore firm direct pressure to the bleeding site. Within the trained procedure, check whether the gauze reaches the source, whether the wound space is adequately filled, whether the pressure dressing has slipped or whether another injury is bleeding. Extra layers over unsuccessful packing may absorb blood without correcting the missing contact with the source. Under TCCC, failed haemostatic gauze may be replaced with fresh gauze of the same or another suitable type. This is a response to continuing bleeding; effective packing is not routinely pulled out.
Without another packet, direct pressure using the means actually present remains the person's own action. An available tourniquet the person knows how to apply is an additional option for anatomically suitable life-threatening limb bleeding. Arbitrary powder does not substitute for a medical gauze containing kaolin or chitosan. Increasing drowsiness, confusion or a weak pulse after major blood loss also calls for checking for continuing or additional bleeding. A dry outer dressing does not explain these changes away; internal bleeding may progress despite control of the external wound.
Maintain pressure during movement
Before necessary movement, secure loose bandage ends so they cannot catch on equipment or terrain. The treated site must retain pressure and remain accessible for reassessment. Following a change of position or movement, check for fresh blood, slipping and reduced dressing pressure at the next tactically feasible opportunity, without removing effective packing merely to inspect it. Until pressure can be secured reliably, the hand remains necessary to provide it. Available insulation from cold ground and protection against wind limit further heat loss; avoid exposing more of the injured person than needed.
Keep the empty product packet with the injured person where possible. At an eventual handover, it identifies the material used; record the injury site, application time, renewed bleeding and further measures on an available note or casualty card. These products are sterile single-use devices, and damaged packaging does not maintain the intended sterility. Used gauze is not cleaned and repacked. Medical removal and subsequent wound treatment must account for the material. Celox Rapid specifies removal, including residues, within 24 hours; this is not a reason for an isolated person to pull out effective packing when a deadline passes without medical care.
Military and civilian care frameworks
Under immediate threat, US TCCC uses a tourniquet early for anatomically suitable life-threatening limb bleeding. The longer process of exposing, assessing and packing suitable other wounds belongs to tactically feasible care under relative cover. British civilian first aid starts with direct hand pressure and escalates bleeding control with available dressings and, where appropriate, a tourniquet. The practical consequence is that a sequence for an accessible accident scene cannot be carried out unchanged under fire. The actual packet instructions, the application the person has learned and the care framework together determine how available gauze is used.