9.3 Severe Bleeding Control, Shock Management & Common Medical Emergencies

Severe Bleeding Control, Shock Management & Common Medical Emergencies

Core Principle: Acute medical emergencies and traumatic hemorrhage require rapid diagnostic recognition and prompt, decisive first aid interventions. Uncontrolled arterial hemorrhage can cause fatal exsanguination in less than three minutes, while conditions like myocardial infarction, acute ischemic stroke, and anaphylaxis demand immediate emergency medical activation and standardized supportive care.

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Hemorrhage Management: External and Internal Bleeding

Severe external bleeding is one of the most urgent trauma emergencies encountered by security guards, commonly arising from industrial machinery accidents, glass lacerations, edged weapon assaults, or vehicular collisions.

Classification of External Hemorrhage

1. Arterial Bleeding: Blood escapes from a severed artery under high systolic pressure. It is characterized by bright red, oxygen-rich blood spurting rhythmically in sync with the heartbeat. Arterial bleeding is the most lethal form of hemorrhage and will result in profound hypovolemic shock and death within minutes if not arrested immediately.
2. Venous Bleeding: Blood flows from a severed vein. It is characterized by a steady, non-pulsating, dark maroon stream. While lower in pressure than arterial bleeding, venous bleeding from major vessels (such as the jugular, femoral, or brachial veins) can be voluminous and life-threatening.
3. Capillary Bleeding: Blood oozes slowly from microscopic capillaries near the skin surface. It is typically minor, red, easily controlled, and clots spontaneously.

Step-by-Step External Hemorrhage Control Protocol

1. Personal Protective Equipment (PPE): Immediately don nitrile examination gloves and protective eyewear. Do not contact blood without barrier protection.
2. Direct Manual Pressure: Place a sterile dressing, clean trauma pad, or clean cloth directly over the bleeding site. Apply firm, continuous, direct pressure with both hands. If no dressing is immediately available, instruct the casualty to press their own hand firmly against the wound.
3. Pressure Bandage: Secure the sterile dressing firmly in place using an elastic compression roller bandage. Wrap snugly to maintain pressure without occluding distal circulation.
4. Layering Dressings: If blood soaks through the initial dressing, do NOT remove the original dressing. Peeling away blood-soaked gauze tears away early fibrin clotting structures and exacerbates hemorrhage. Leave the initial dressing in place and apply additional bulky dressings directly over top, reapplying firm pressure.
5. Tourniquet Application for Extremity Hemorrhage:
   • If life-threatening arterial limb bleeding cannot be controlled with direct pressure, or in cases of traumatic limb amputation, immediately apply a Combat Application Tourniquet (CAT) or recognized commercial tourniquet.
   • Placement: Position the tourniquet 5 to 7 cm (2 to 3 inches) proximal to the wound (between the injury and the heart). Never place a tourniquet directly over a joint (such as the knee or elbow); if the wound is just below a joint, apply the tourniquet directly above the joint.
   • Tightening: Pull the self-adhering band tight, turn the windlass rod until the bright red bleeding completely stops and the distal arterial pulse is eliminated, and secure the windlass in the locking clip.
   • Time Documentation: Note the exact time of tourniquet application on the tourniquet label or write "TK" and the 24-hour time (e.g., "TK 14:35") directly on the casualty's forehead using a permanent marker.
   • Critical Rule: NEVER loosen, release, or remove a tourniquet once applied. Removing a tourniquet allows toxic metabolic by-products and trapped lactic acid to surge into systemic circulation (reperfusion shock) and triggers catastrophic secondary hemorrhage. A tourniquet must only be released by surgical teams in a hospital trauma center.

Internal Hemorrhage Recognition

Internal bleeding occurs within thoracic, abdominal, or pelvic cavities due to blunt impact trauma (e.g., vehicular impacts, falls from heights, or physical beatings) or medical conditions (e.g., bleeding peptic ulcers, ruptured aortic aneurysms).

• Signs & Symptoms: Deep contusions (bruising/ecchymosis) over the chest or abdomen; rigid, board-like, swollen, or tender abdomen; coughing up bright red foamy blood (hemoptysis); vomiting dark "coffee-ground" emesis (hematemesis); passing black tarry stools (melena); signs of unexplained systemic shock.
• First Aid Management: Internal hemorrhage cannot be treated in the field. Immediately activate 911. Keep the casualty resting flat, maintain body warmth, continually monitor ABCs, and never administer oral food or fluids.

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Shock (Hypoperfusion): Pathophysiology and Field Management

Shock (hypoperfusion) is a life-threatening, progressive failure of the circulatory system to deliver adequate oxygenated blood to vital organs and peripheral tissues. When cellular perfusion drops below metabolic demand, cells shift from aerobic to anaerobic metabolism, producing lactic acid, systemic cellular death, and organ failure.

Primary Classifications of Shock

• Hypovolemic Shock: Caused by massive fluid or blood loss (severe external hemorrhage, internal organ rupture, extensive second/third-degree burns, or severe dehydration).
• Cardiogenic Shock: Caused by failure of the heart muscle to pump effectively (severe myocardial infarction, end-stage heart failure, or lethal arrhythmias).
• Neurogenic / Distributive Shock: Caused by spinal cord trauma that severs sympathetic nerve pathways, producing widespread vasodilation and sudden loss of vascular tone.
• Anaphylactic Shock: Severe systemic allergic reaction causing massive histamine release, systemic vasodilation, and airway edema.
• Septic Shock: Severe, overwhelming systemic bacterial infection causing vascular permeability and circulatory collapse.

Clinical Presentation: The Signs and Symptoms of Shock

• Skin: Pale, cool, ashen, and clammy (diaphoretic) skin caused by peripheral vasoconstriction diverting blood to vital core organs; cyanosis (bluish tint) of lips, earlobes, and nail beds.
• Pulse: Rapid, weak, and "thready" pulse (tachycardia, often > 100 bpm) as the heart compensates for diminished stroke volume.
• Respiration: Rapid, shallow breathing (tachypnea) as the body attempts to compensate for metabolic acidosis.
• Mental Status: Restlessness, anxiety, irritability, disorientation, confusion, and gradual progression to lethargy and unresponsiveness due to cerebral hypoxia.
• Gastrointestinal: Nausea, vomiting, and intense, unquenchable thirst.

Field First Aid Protocol for Shock

1. Treat the Underlying Cause: Immediately control active external arterial hemorrhage with direct pressure or a tourniquet.
2. Call 911: Request immediate paramedic transport and notify dispatch of decompensating shock.
3. Position the Casualty:
   • Place the casualty supine (flat on their back).
   • If there are no suspected spinal injuries, head trauma, or pelvic/lower limb fractures, elevate the lower extremities 15 to 30 cm (6 to 12 inches). Elevating the legs promotes venous blood return to the heart and core organs.
   • If the casualty is experiencing breathing distress or pulmonary edema, keep them in a semi-reclined position.
4. Maintain Body Temperature: Hypothermia impairs the body's blood-clotting cascade, causing coagulopathy and worsening hemorrhage. Insulate the casualty by placing blankets, jackets, or tarps both underneath and over top of them.
5. Withhold Food and Drink (NPO - Nil per Os): Do NOT give the casualty anything to eat or drink, regardless of how intensely they plead for water. Water in the stomach induces vomiting and pulmonary aspiration, and delays emergency surgical anesthesia upon hospital arrival. Moisten the lips with a damp cloth if necessary.
6. Monitor Vitals: Recheck level of consciousness, breathing, and pulse every five minutes until paramedics arrive.

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Common Acute Medical Emergencies

Security guards routinely encounter common life-threatening medical conditions across commercial, retail, and industrial facilities.

1. Cardiovascular Emergencies: Angina vs. Heart Attack (Myocardial Infarction)

• Pathophysiology: Angina pectoris occurs when narrowed coronary arteries temporarily restrict oxygen to the heart muscle during exertion, resolving with rest or nitroglycerin. A heart attack (myocardial infarction) occurs when a coronary artery is completely blocked by a thrombus, causing permanent ischemic muscle death.
• Signs & Symptoms: Crushing, squeezing, heavy substernal chest pressure (described as "an elephant sitting on my chest"); pain radiating into the left shoulder, arm, neck, jaw, or back; dyspnea (shortness of breath); cold sweats (diaphoresis); nausea and vomiting; feeling of impending doom. In women, elderly individuals, and diabetics, symptoms may present atypically as unexplained fatigue, shortness of breath, back pain, or indigestion without overt chest discomfort.
• First Aid Protocol:
  • Call 911 immediately and request an AED.
  • Place the casualty in a comfortable semi-seated position (W-position) with knees bent and back supported to reduce cardiac workload.
  • Loosen tight clothing around the neck and waist.
  • Acetylsalicylic Acid (ASA / Aspirin) Protocol: Inquire if the casualty has a known allergy to ASA or a history of active gastrointestinal bleeding/stomach ulcers. If no contraindications exist, encourage and assist the casualty to chew two 81 mg low-dose ASA tablets (or one regular 325 mg tablet). Chewing ensures rapid absorption through oral and gastric mucosa, inhibiting platelet aggregation and preventing coronary clot enlargement.
  • Nitroglycerin Assistance: If the casualty has their own prescribed nitroglycerin spray or sublingual tablets, assist them in self-administering it according to their prescription. Ensure the casualty is sitting or lying down, as nitroglycerin causes rapid vasodilation and hypotension. Never assist with nitroglycerin if the casualty has taken erectile dysfunction medications (e.g., sildenafil / Viagra, tadalafil / Cialis) within the past 24 to 48 hours, as the combination triggers fatal circulatory collapse.

2. Cerebrovascular Accident (Stroke)

A stroke occurs when blood flow to a region of the brain is interrupted by a blood clot (ischemic stroke, ~85% of cases) or a ruptured cerebral blood vessel (hemorrhagic stroke, ~15% of cases), depriving brain tissue of oxygen and glucose.

The FAST Diagnostic Assessment Protocol

When evaluating a suspected stroke, apply the internationally recognized FAST diagnostic test:

• Stroke Management Rules:
  • Activate 911 immediately. Thrombolytic "clot-busting" drugs (tPA) can only be administered within a strict 3 to 4.5-hour clinical window from symptom onset.
  • Maintain an open airway. If the casualty is conscious, position them comfortably with head and shoulders slightly elevated. If unresponsive and breathing normally, place them in the recovery position on their paralyzed side.
  • Do NOT administer ASA, food, water, or any medications. Administering ASA to a casualty suffering a hemorrhagic stroke can cause fatal intracerebral bleeding, and swallowing difficulties (dysphagia) create severe choking and aspiration risks.

3. Seizure Management (Generalized Tonic-Clonic)

A seizure is a sudden, uncontrolled surge of electrical activity in the brain, often caused by epilepsy, head trauma, stroke, hypoxia, hypoglycemia, or drug/alcohol withdrawal. Generalized tonic-clonic (grand mal) seizures involve two distinct phases: the tonic phase (muscle stiffening, loss of consciousness, falling to ground) followed by the clonic phase (rhythmic, violent jerking of limbs, clenched jaw, foaming at mouth, irregular breathing).

• Crucial First Aid Rules:
  • DO: Protect the casualty from physical harm. Clear away surrounding furniture, hard objects, and crowds. Place a soft jacket, folded blanket, or hands gently beneath their head to prevent skull trauma. Loosen tight neckties or collars. Time the duration of the seizure.
  • DO NOT: NEVER physically hold down or restrain a seizing casualty. Restraining convulsive movements can cause fractures, joint dislocations, and torn muscles.
  • DO NOT: NEVER put anything into the casualty's mouth (no tongue depressors, spoons, wallets, or fingers). The tongue cannot be swallowed; inserting objects causes dental fractures, airway obstruction, and severe bite injuries to the rescuer.
• Post-Ictal Care: Once convulsions subside, the casualty enters the post-ictal phase (limp, confused, drowsy, or unresponsive). Gently roll the casualty into the Recovery Position on their side to maintain an open airway and allow saliva to drain. Monitor breathing continuously.
• When to Call 911 for Seizures:
  • The seizure lasts longer than 5 minutes (indicates status epilepticus, a life-threatening medical emergency).
  • A second seizure begins shortly after the first without the person regaining consciousness.
  • The casualty has no known history of epilepsy or seizures.
  • The casualty is pregnant, diabetic, or injured during the fall.
  • The casualty remains unresponsive for more than 10 to 15 minutes after the convulsions stop.

4. Diabetic Emergencies: Hypoglycemia vs. Hyperglycemia

Diabetes mellitus involves impaired regulation of blood glucose by the pancreatic hormone insulin.

• The Golden Rule for Diabetic Emergencies: If a conscious diabetic casualty is confused and you cannot determine whether their condition is hypoglycemia or hyperglycemia, always administer oral fast-acting sugar (such as fruit juice, candy, or glucose tablets). Hypoglycemia starves brain cells of glucose and causes irreversible brain damage or death within minutes. Providing sugar to a hypoglycemic casualty is immediately life-saving; in a hyperglycemic casualty, the small extra sugar will not cause acute harm during the time it takes for paramedics to arrive.
• Unconscious Diabetic Casualty: NEVER administer oral fluids or sugar to an unconscious person (aspiration risk). Immediately call 911, place in the recovery position, and monitor ABCs.

5. Anaphylaxis (Severe Systemic Allergic Reaction)

Anaphylaxis is a severe, life-threatening systemic hypersensitivity allergic reaction triggered by insect stings (wasps, bees), foods (peanuts, tree nuts, shellfish), medications (penicillin), or latex. Massive histamine release causes sudden, severe systemic vasodilation and respiratory tract edema.

• Signs & Symptoms: Widespread hives (urticaria), intense itching, swelling of the face, lips, tongue, and uvula (angioedema); high-pitched whistling or stridor during inspiration; wheezing and severe chest tightness; feeling of throat closing; dizziness, hypotension, and rapid circulatory collapse.
• Epinephrine Auto-Injector Protocol (EpiPen / Allerject):
  1. Activate 911 immediately.
  2. Verify the auto-injector belongs to the casualty or is available from an emergency kit. Inspect the medication window to ensure the epinephrine liquid is clear and colorless (not cloudy, discolored, or expired).
  3. Remove the safety cap (blue safety release on an EpiPen: "Blue to the sky, orange to the thigh").
  4. Grasp the auto-injector in a fist, keeping fingers clear of both ends.
  5. Hold the casualty's leg still. Push the injector firmly into the mid-outer anterolateral aspect of the thigh at a 90-degree angle until a click is heard or felt. Epinephrine can be injected directly through clothing.
  6. Hold the injector firmly in place for 5 to 10 seconds (follow manufacturer specifications, typically 5 seconds for modern auto-injectors) to deliver the full dose.
  7. Remove the unit straight out and gently massage the injection site for 10 seconds.
  8. Keep the casualty resting comfortably (supine with legs elevated, or seated upright if breathing distress predominates).
  9. Repeat Dose: If symptoms persist, deteriorate, or breathing does not improve within 5 to 15 minutes, and paramedics have not yet arrived, assist with administering a second epinephrine dose into the opposite thigh.
  10. Hand used auto-injectors directly to arriving paramedics for safe disposal.