Bleeding More Than Is Generally Recommended
Catastrophic hemorrhage control, wound packing, and tourniquet application
// IMMEDIATE ACTIONS
Execute these steps in order:
- 01 APPLY DIRECT UNRELENTING PRESSURE
Firm, continuous pressure is the primary tool to stop external hemorrhage:
- ├─ Place a clean cloth, sterile gauze, or gloved hands directly over the bleeding point.
- ├─ Press firmly with both hands, using your body weight.
- └─ Do not release pressure to check the wound for at least 5 minutes.
- 02 PACK DEEP CAVITY WOUNDS (WOUND PACKING)
For deep junctional wounds in groin, armpit, or neck where pressure fails:
- ├─ Tightly pack hemostatic or sterile gauze directly into the wound cavity down to the bone/vessel.
- └─ Maintain direct two-handed compression over the packed wound for at least 3 minutes.
- 03 APPLY TOURNIQUET FOR SEVERE LIMB BLEEDING
If severe arterial bleeding on an arm or leg cannot be controlled with pressure:
- ├─ Place a commercial windlass tourniquet 5 to 7 cm (2 to 3 inches) above the wound (not over a joint).
- ├─ Tighten the windlass rod until the arterial bleeding completely stops and distal pulse vanishes.
- └─ Lock the rod into the clip and record the exact application time on the band.
- 04 CALL 911 / 112 AND PREVENT HYPOTHERMIA
Contact emergency dispatch immediately, keep patient lying flat, and wrap in blankets to prevent coagulopathy.
// CRITICAL MISTAKES (DO NOT)
- ✕ Do not remove blood-soaked dressings to "check if it stopped"WHY: you rip away delicate fibrin clots; add more layers on top
- ✕ Do not loosen, release, or periodically untie an applied tourniquet to "let blood circulate"WHY: this triggers sudden lethal hemorrhagic collapse and washes toxic metabolites into circulation
- ✕ Do not use thin wires, shoelaces, or nylon cords as makeshift tourniquetsWHY: they cut through skin and slice nerves without stopping deep arterial flow
- ✕ Do not allow the patient to become coldWHY: hypothermia completely disables the blood’s enzymatic clotting cascade
“Press hard with both hands directly on the wound; for catastrophic limb bleeds, apply a tourniquet high and tight.”
The adult human cardiovascular system contains roughly five liters of pressurized blood pumped at velocities exceeding thirty centimeters per second through the major arterial conduits.
When a high-energy trauma (deep laceration, machinery accident, explosive fragment, or vehicular puncture) severs an artery, hydraulic pressure shoots blood outward in pulsatile jets.
The Mathematics of Hemorrhagic Shock
If the circulating blood volume drops by more than 30% to 40% (approximately 1.5 to 2.0 liters in an average adult), venous return to the right atrium collapses. The heart enters pulseless electrical activity (PEA) arrest from severe hypovolemic shock. Because an open femoral artery can lose two liters in under two minutes, immediate mechanical occlusion is the only intervention that prevents mortality.
Tourniquet Application Principles
- Placement: Position the band 5 to 7 cm (2 to 3 inches) proximal to the bleeding wound. If clothing or smoke obscures the exact wound site, apply it immediately at the uppermost proximal portion of the limb ("high and tight").
- Tightening the Windlass: The mechanical advantage of the windlass compresses the underlying muscle against the long bone, occluding both venous and arterial conduits. The windlass must be rotated until all bright spurting ceases and the distal pulse is extinguished.
- Time Recording: Always write the exact minute of application on the time tag (e.g.,
14:35). Paramedics and trauma surgeons use this timestamp to monitor tissue ischemia windows safely.
112 reaches fire and emergency medical dispatch directly. 110 is police.
Additional safety instructions and adjacent hazard knowledge.