11.2 Tactical Patient Assessment and Bleeding Control

Threat-Zone Phases and Hemorrhage Control

BPOC 40.4 divides law enforcement emergency medical assistance into three phases borrowed from the Tactical Emergency Casualty Care (TECC) model: direct threat care, indirect threat care, and evacuation care. Direct threat care is the hot-zone or care-under-fire phase. The priority is mitigating the threat — move, communicate, get off the X, prevent additional casualties, and stay in the fight. The only medical act normally appropriate here is a quick tourniquet for life-threatening extremity bleeding, applied during a lull or behind cover, because trying to treat in the open exposes both officer and casualty to continued fire.

Indirect threat care (warm zone / tactical field care) occurs in relative safety. Attention shifts to maintaining security, forming an immediate action plan, and delivering lifesaving care. Evacuation care happens while moving the casualty toward EMS or a hospital; the BPOC focus is reassessing prior interventions and adding additional care as trained. On the exam, wrong answers often treat the phases as fixed places on a map. The better answer asks a dynamic question: has the threat changed, and does current security support more care?

MARCH, XABCDE, and Bleeding Choices

BPOC 40.5 teaches two assessment patterns. MARCH = Massive hemorrhage, Airway, Respirations, Circulation, Head/Hypothermia. XABCDE = eXsanguination, Airway, Breathing, Circulation, Disability, Environment. Both deliberately push catastrophic bleeding to the very front, reversing the airway-first habit of ordinary CPR, because uncontrolled extremity or junctional bleeding can cause death in two to three minutes — faster than an obstructed airway in most trauma.

BPOC 40.6 links bleeding type to the correct tool. Direct pressure is applied straight to the wound and is always the immediate default. A tourniquet is for massive extremity hemorrhage: place it high and tight, or at least 2-3 inches above the wound (never over a joint), tighten until bright bleeding stops, and write the time of application on the device or the patient's skin. Wound packing with gauze plus firm pressure is for massive junctional hemorrhage — groin, armpit, neck, shoulder — where a tourniquet cannot reach. A pressure dressing manages less severe bleeding or holds pressure after packing.

Applied Scenario Guidance

If the stem says the shooter is still active, the answer is not a head-to-toe survey in the open — it is direct threat care: get to cover, return fire or move as trained, communicate, and prevent additional casualties. Once the stem states the area is secured or relatively safe, switch to indirect threat care and run MARCH or XABCDE. For a thigh wound with bright, pulsing, heavy bleeding, choose a tourniquet before the full secondary assessment. For groin or armpit bleeding, choose wound packing with direct pressure.

After any bleeding intervention, reassess — if a tourniquet fails to control the bleed, place a second tourniquet just above (proximal to) the first rather than loosening the original.

Tourniquet and Packing Details the Exam Tests

Several concrete numbers and rules recur. A tourniquet goes 2-3 inches above the wound and never directly over a joint such as the knee or elbow, because the bone gap prevents arterial compression; if the wound is just above a joint, place the tourniquet on the next limb segment up. Tighten until the bright bleeding stops and the distal pulse is gone — a tourniquet that merely slows venous bleeding while leaving arterial flow can paradoxically increase blood loss.

Write the application time (not the time you remember to write it) on the device or directly on the patient's skin, because downstream providers use that time to manage limb-ischemia risk.

Wound packing means firmly stuffing gauze (hemostatic if issued) into the wound track until it is full, then holding hard direct pressure for at least three minutes before applying a pressure dressing over it. Packing is for junctional bleeds a tourniquet cannot reach; it is not used in the chest, abdomen, or skull. After every intervention you reassess: did the bleeding stop, is the dressing soaking through, has the threat picture changed? Reassessment is the action most often missing from wrong answers.

Exam Trap

The biggest trap is letting airway-first instincts override the BPOC tactical sequence: in MARCH and XABCDE, massive hemorrhage or exsanguination is assessed before airway, because trauma kills faster through bleeding than through a blocked airway. A second trap is documenting the tourniquet time only after transport — the objective requires noting the time at application. A third is loosening or removing a tourniquet in the field to 'check' the wound; once life-threatening bleeding is controlled, the device stays on until a higher level of care assumes responsibility.

A fourth is choosing direct threat care actions (full secondary survey, splinting) during active fire, or choosing indirect-care actions while still under fire — match the action to the phase the stem describes.