Akoestiese flitsbang, kinetiese impak en noodhulp vir skareverspreiding¶

During civil disturbances, public demonstrations, or law enforcement crowd dispersal operations, bystanders, journalists, medics, and residents can be exposed to a spectrum of crowd control weapons (often classified by medical and human rights bodies as "less-lethal weapons"). These devices include kinetic impact projectiles (KIPs) such as rubber bullets, foam baton rounds, beanbag rounds, and sponge grenades; explosive pyrotechnic stun grenades (flashbangs) and concussion grenades; long-range acoustic devices (LRADs / sound cannons); and chemical irritants (tear gas / CS, pepper spray / OC, and pepper balls).

Despite the term "less-lethal," peer-reviewed medical studies published in the BMJ and The New England Journal of Medicine demonstrate that kinetic impact projectiles and pyrotechnic stun devices cause severe, life-threatening injuries at close range: open globe eye ruptures, depressed skull fractures, internal thoracic or abdominal bleeding, tympanic membrane (eardrum) perforation from acoustic blast overpressure, and deep thermal metal-oxide burns. Knowing how to extract an injured person out of the line of fire, shield a ruptured eyeball without applying pressure, treat a flashbang blast burn or eardrum rupture, and flush chemical irritants safely prevents permanent disability and saves lives.

Doen dit nou¶

1. Move the injured person laterally out of the line of fire and upwind immediately: Before attempting detailed wound care, guide or carry the injured person sideways out of the street corridor behind solid hard cover (such as a concrete building corner or masonry wall) and upwind / uphill away from heavy tear gas clouds, which sink into low doorways and subway stairs.
2. Call your local emergency number immediately for head, chest, neck, or eye impacts: Dial 911 in the United States and Canada, 112 across the European Union, 999 in the United Kingdom, or 000 in Australia. A rubber bullet or beanbag round striking the head, neck, or chest can cause fatal intracranial bleeding, airway collapse, or cardiac arrest (commotio cordis) even if the outer skin is not broken. See our emergency numbers directory.
3. Never touch, press, or rub an eye struck by a projectile or blast: If a rubber bullet, paintball/pepper ball, or flashbang fragment hits the eye or orbit, do NOT apply direct pressure to the eye and do NOT try to pull out stuck fragments. Cover the injured eye with a rigid protective dome (such as a metal eye shield or the bottom of a clean paper cup taped over the bony brow and cheek) and cover the uninjured eye as well to stop sympathetic eye movement during hospital transport.
4. Never kick, pick up, or pour water on a smoking flashbang or tear gas canister: Pyrotechnic stun grenades and military-style tear gas canisters burn internal magnesium or aluminum-perchlorate charges at 1,000 to 2,700 degrees Celsius (1,800 to 4,900 degrees Fahrenheit) and can detonate a secondary blast that amputates fingers or feet. Step away immediately; if clothing catches fire, Stop, Drop, and Roll or smother flames with a heavy coat, then cool skin burns with running water for 20 minutes.
5. Keep water, soap, and fingers OUT of a bleeding or ringing ear after a flashbang blast: If a stun grenade explodes near someone's head, the 170-to-180-decibel shockwave frequently ruptures the eardrum (tympanic membrane). Never put drops, water, or cotton swabs into the ear canal. Gently place a loose, dry sterile gauze pad over the outer ear to catch blood or clear fluid and seek urgent medical care.
6. Decontaminate tear gas or pepper spray with plain cold water or saline (skip milk and antacids on open wounds): Move to fresh air, lean forward so runoff does not wash down into the eyes or groin, and flush eyes from the inner corner (near the nose) outward using a brisk stream of sterile normal saline or clean cold drinking water. Never pour milk, baby shampoo, or liquid antacid into an eye that also has a cut, abrasion, or projectile injury.

flowchart TD
    A["Crowd Dispersal Injury Occurs"] --> B["Move casualty laterally behind hard cover and upwind to a safe zone"]
    B --> C{"What is the primary injury mechanism?"}
    C -->|"Kinetic Projectile Impact (Rubber Bullet, Beanbag, Sponge Round)"| D{"Which body region was struck?"}
    C -->|"Flashbang / Pyrotechnic Blast or Acoustic LRAD"| E{"Is there thermal burning, ear bleeding, or shrapnel?"}
    C -->|"Chemical Irritant Only (Tear Gas CS / Pepper Spray OC)"| F["Strip contaminated outer layer, blink in fresh wind, and flush eyes inner-to-outer with plain water or saline"]
    D -->|"Head, Neck, Chest, or Abdomen"| G["Call emergency services immediately: monitor airway/breathing and watch for internal bleeding or concussion"]
    D -->|"Eye or Orbit"| H["ZERO pressure on eye: tape a rigid paper cup shield over bony socket and cover both eyes"]
    D -->|"Limb Laceration or Embedded Round"| I["Control bleeding with firm ring/direct pressure without pushing embedded projectile deeper"]
    E -->|"Thermal Burn from Canister or Flash"| J["Cool burn with clean running water for 20 minutes and cover loosely with sterile cling wrap or non-stick dressing"]
    E -->|"Ruptured Eardrum (Deafness, Ringing, Ear Bleeding)"| K["Keep ear canal 100% dry (no drops or water), cover outer ear loosely with dry gauze, and check for concussion"]

Triage matrix: crowd dispersal weapons and specific injury patterns¶

Understanding the physical mechanism of each crowd dispersal device allows first responders and bystanders to look for hidden internal injuries that are easy to miss in a chaotic street environment.

Step 1: Treating Kinetic Impact Projectile (Rubber Bullet & Beanbag) injuries¶

A widespread myth is that "rubber bullets" are made of soft, bouncy rubber like a child's toy ball. In reality, many kinetic impact projectiles consist of a solid steel, lead, or aluminum core coated in a thin 2-millimeter layer of hard vulcanized rubber or dense polyurethane foam, while 12-gauge "beanbag" rounds consist of a Kevlar fabric pillow packed with 40 grams (1.4 ounces) of #9 lead birdshot fired from a shotgun at 70 to 90 meters per second (230 to 300 feet per second).

When fired from short range, or when a projectile ricochets off asphalt pavement and tumbles edge-on into a bystander, the concentrated kinetic energy slices straight through skin, shatters bone, and embeds the projectile (along with dirty fabric from the victim's clothing) deep inside muscle or body cavities.

1. Ocular trauma: when a projectile or pepper ball hits the eye¶

Medical reviews show that eye impacts from kinetic projectiles carry one of the highest rates of permanent disability in crowd dispersal settings, frequently rupturing the eyeball (open globe injury), detaching the retina, or filling the anterior chamber with blood (traumatic hyphema).

Immediate eye trauma protocol: - Recognize an Open Globe Injury: Look (without touching or pulling on the eyelids) for a teardrop-shaped or irregular pupil, blood pooling inside the colored iris (hyphema), dark jelly-like tissue protruding from the white of the eye, a flattened or collapsed appearance of the eyeball, or sudden loss of vision ("everything went black or red"). - Apply ZERO pressure to the eyeball: Never press a gauze pad against a struck eye, and never pour high-pressure water or homemade antacid mixtures into an eye that has suffered blunt impact. Pressing on a lacerated eyeball squeezes the vitreous humor out of the eye, causing irreversible blindness. - Construct an improvised rigid eye shield: If you do not have a military aluminum Fox Eye Shield, take a clean disposable paper or foam drinking cup, cut or tear the bottom half off so it is 4 centimeters (1.5 inches) tall, and tape the rim of the cup over the bony brow ridge above the eye and the bony cheekbone below the eye so nothing touches the eyelid or eyeball itself. - Cover the uninjured eye too (Bilateral Patching): Human eyes are neurologically yoked together (consensual conjugate eye movement): every time your good left eye darts around to look at paramedics or streetlights, your injured right eye moves identically inside its socket, grinding fractured orbital bone or tearing retinal tissue. Gently covering the good eye with gauze calms both eyes while you guide the person by the arm to an ambulance. - Position upright at 30 to 45 degrees: Keep the patient sitting upright (never lying flat and never bending their head down) and instruct them not to cough, blow their nose, or strain, which spikes intraocular pressure. See our detailed eye injuries first aid guide.

2. Head, neck, and facial impacts¶

A 40-millimeter foam baton or rubber bullet striking the forehead, temple, jaw, or neck delivers enough blunt force to fracture the skull, crush the larynx (voicebox), or dissect the carotid artery.

• Lugweg eerste by nekslae: 'n Projektiel wat die voorkant van die keel tref, kan die skildklier of krikoïed kraakbeen breek, wat vinnige interne swelling veroorsaak wat die lugweg binne 10 tot 20 minute blokkeer. As iemand wat in die nek geslaan word 'n hees stem ontwikkel, sukkel om speeksel te sluk, lawaaierige hoë asemhaling (stridor), of borrelende/knarsende onder die vel van die nek (subkutane emfiseem), skakel onmiddellik nooddienste en laat hulle regop sit en effens vorentoe leun.
• Skerm vir intrakraniale bloeding: Enigiemand wat in die kop geslaan is wat sy bewussyn verloor (selfs vir 3 sekondes), braak, verward raak, ongelyke pupille ontwikkel, duidelike vloeistof of bloed uit die neus of ore laat drup, of 'n verergerende hoofpyn ervaar, benodig onmiddellike noodkamer CT-beelding. Sien ons hoofbeseringsgids.

3. Bors- en abdominale stomp trauma (en ingebedde projektiele)¶

• Moet nooit 'n ingeboude rubberkoeël of boontjiesak rondte uittrek nie: Op afstande onder 15 meter (50 voet), 40-millimeter sponsrondtes en 12-maat loodskootboontjiesakke slaan gereeld reg deur die vel en steek binne die borswand, buik of bobeen vas. Behandel 'n ingeboude projektiel presies soos 'n geïmpleerde meslem: om dit in die straat uit te trek, kan 'n geskeurde slagaar ontkurk. Los dit in plek, pak skoon gaas om die rande om dit te stabiliseer, en vervoer na 'n traumachirurg. (Nota vir ER dokters: 12-maat boontjiesak rondtes bevat lood voëlskot wat in die wond kan oopbreek, wat X-straalbevestiging vereis dat alle loodkorrels en stofwatte chirurgies verwyder word.)
• Kyk vir vertraagde inwendige bloeding (milt, lewer en long): 'n Persoon wat in die onderste ribbes of maag geslaan word deur 'n knuppel rondte loop dikwels weg en dink dat hulle net 'n nare pers kneusplek het, net om 2 uur later by die huis ineen te stort van 'n **gebreekte milt, geskeurde pneuma, of gesplete lewer. Soek dringende hospitaalevaluering na enige bolyf-impak as die persoon kortasem, skerp pyn wanneer hy diep asemhaal, pyn wat na die punt van die linkerskouer uitstraal (Kehr se teken van bloed wat die diafragma irriteer deur 'n gebarste milt), bleek klam vel, duiseligheid wanneer hy opstaan, of 'n rigiede, teer buik.

Stap 2: Behandeling van Flashbang (Verdoofgranaat) en Akoestiese Ontploffingsbeserings¶

'n flashbang (verdoofgranaat) is 'n plofbare toestel wat oorspronklik ontwerp is vir militêre gyselaarsreddingskamerinskrywings, nie oop straatskare nie. Tog, wanneer dit in digte skares ontplooi word, ontplof 'n flits met 'n oordruk-skokgolf van 170 tot 185 desibel (meer as 1 000 keer die akoestiese drukdrempel wat menslike oorstrukture skeur), 'n verblindende 6-tot-8-miljoen-kandela-ligflits.-magnesiumpoeier-vuurbal of 'n intense metaalpoeiervuurbal**, en 'n intense metaalpoeiervuurbal**.

1. Primêre ontploffingsbesering: gebarste trommelvliese (tympaniese membraanperforasie) en harsingskudding¶

Wanneer 'n flitsslag of harsingskudding granaat binne 1 tot 5 meter (3 tot 16 voet) van 'n persoon ontplof, slaan die supersoniese ontploffingsgolf in die skedel en eksterne oorkanaal:

• Tekens van 'n gebarste trommelvlies: Skielike skerp oorpyn op die oomblik van die ontploffing gevolg deur onmiddellike gedempte gehoor of doofheid aan daardie kant, harde brul of hoë geluide (tinnitus), erge draaiende duiseligheid (vertigo en verlies van balans as gevolg van binne-oor skok, halfsirkelvormige/broodskok van bloed of bloedvloeistof) die oorkanaal**.
• Streng noodhulpreëls vir ontploffingsoortrauma:
  1. Hou die oorkanaal 100 persent DROOG: Moet nooit 'n ontploffingsbeseerde oor met water, sout of oogspoel spoel wanneer jy traangas afwas nie. As 'n persoon 'n geperforeerde trommelvlies het van 'n flitsslag en iemand gooi besoedelde traangas spoelwater in hul oorkanaal af, kom bakterieë en CS chemiese kristalle direk die middeloorspasie binne, wat ernstige middeloorinfeksies (otitis media) en intense pyn veroorsaak.
  2. Moet nooit die binnekant van 'n bloeiende oorkanaal styf toestop nie: As helder vloeistof of waterige bloed by die oor uitloop na 'n ontploffing of kopaanval, kan dit serebrospinale vloeistof (CSF) van 'n basilêre skedelfraktuur bevat. Moet nooit watteballetjies of oordopjes in 'n bloeiende oorkanaal vassteek nie. Plak eerder 'n steriele, droë gaasblokkie losweg oor die buitekant van die oor sodat vloeistowwe vrylik op die pad kan dreineer, en soek mediese noodevaluering. (Die meeste skoon ontploffingsoordromperforasies genees vanself oor 4 tot 8 weke as dit heeltemal droog gehou word, terwyl groter skeure 'n ENT-spesialis-pleister of timpanoplastie vereis.)

2. Sekondêre en Tersiêre Flashbang Trauma: Skrapnel en Magnesium Termiese Brandwonde¶

Alhoewel skokgranate so ontwerp is dat die swaar staal bo- en onder-submunisies ongeskonde bly terwyl gasventilasies deur sygate ventileer, breek moderne liggewig saamgestelde/plastiek-liggaam flitsbangs en pirotegniese rookgranate gereeld by ontploffing, en dryf vlymskerp fragmente van brandende plastiek, metaalpenne uitwaarts en warm chemiese spoed na buite:

• Verkoelingsflits en termiese brandwonde in die houer: As 'n blitsslag teen iemand se been, rugsak of jas ontplof, of as iemand per ongeluk teen 'n 500 grade-Celsius (932-grade-Fahrenheit) traangashouer borsel:
  1. Blus enige brandende sintetiese klere onmiddellik (sintetiese nylon- of poliësterbaadjies smelt tot warm taai teer; trek smeulende buiteklere af as dit nie in die vel gesmelt word nie).
  2. Borsel liggies enige los droë poeierresidu af en spoel dan die brandwond met koel, skoon lopende water vir 'n volle 20 minute (moet nooit ys, botter, tandepasta of koeksodapasta op 'n brandwond gebruik nie).
  3. Bedek die afgekoelde brandwond losweg met skoon plastiek kombuis kleefplastiek (plat gelê, nie styf om 'n swellende ledemaat toegedraai nie) of 'n steriele kleefvrye verband en gaan na 'n hospitaalbrand- of noodeenheid.

3. Verdediging teen langafstand akoestiese toestelle (LRAD's / Klankkanonne)¶

Wanneer 'n LRAD (Langafstand Akoestiese Toestel) sy hoë toonhoogte afskriktoon aktiveer, projekteer dit 'n styf gefokusde straal van 2 000 tot 4 000 hertz klankenergie teen 135 tot 162 desibels. Omdat desibels op 'n logaritmiese skaal gemeet word, vermenigvuldig elke 10-desibel-verhoging akoestiese energie met 10-voudig: 150 desibel is 1 000 keer meer intens as 'n 120-desibel rockkonsert of ambulanssirene, wat onmiddellike meganiese skeuring van die innerlike hare-oorsel binne die sekonde-oorsel veroorsaak.

Stap 3: Veilige ontsmetting van traangas (CS) en pepersproei (OC) langs wonde¶

Wanneer 'n persoon beide 'n oop fisiese wond het (soos 'n skraap, skeurwond of gebarste trommelvlies) EN swaar chemiese irriterende kontaminasie (CS traangas of OC / PAVA pepersproei), moet jou ontsmettingstegniek vermy om die oop wond te vergiftig.

How to flush eyes and skin without spreading chemical crystals downward¶

1. Do NOT rub your eyes: CS tear gas is not actually a gas; it is a fine aerosol cloud of microscopic solid crystalline particles (2-chlorobenzalmalononitrile) with tiny sharp edges. Rubbing your eyes grinds those crystals straight into your cornea, causing painful corneal abrasions.
2. Stand into the wind and blink rapidly: Once out of the smoke cloud, face the clean breeze, hold your arms out from your sides, and blink rapidly so natural tears begin floating the particles out.
3. Flush from the nose outward while leaning forward: Tilt your head forward and sideways (so contaminated wash water drips straight onto the ground rather than running down your neck, chest, and into your groin, where thin skin burns intensely). Pour a steady stream of clean cold water or sterile saline across the open eye starting at the inner corner next to the bridge of the nose and flowing outward across the temple for 5 to 10 minutes.
4. Watch for severe Asthma or COPD bronchospasm: Inhaling CS tear gas or pepper spray triggers violent airway constriction in people with asthma or reactive airway disease. Help them sit upright in fresh air and assist them in using their prescribed albuterol / salbutamol rescue inhaler (2 to 4 puffs via spacer); if wheezing continues or lips turn blue, call emergency medical services immediately.
5. Cold shower at home (before hot): When you get home, strip off your contaminated clothes inside a garage or bathroom into a sealed plastic bag. Step into a stone-cold shower for the first 5 minutes while leaning your head forward so water does not wash hair residue onto your lower body; taking a hot shower first opens skin pores and reactivates trapped CS crystals, causing a fresh full-body burning sensation.

Gereelde vrae¶

Bronne nagegaan¶

• International Committee of the Red Cross (ICRC) and International Federation of Red Cross and Red Crescent Societies (IFRC) (International): First Aid in Armed Conflicts and Other Situations of Violence clinical guidelines for blast injuries, kinetic impact trauma, ocular shielding, and chemical irritant decontamination.
• Physicians for Human Rights (PHR) and International Network of Civil Liberties Organizations (INCLO) (United States / International): Lethal in Disguise: The Health Consequences of Crowd-Control Weapons and BMJ Open systematic review on mortality and morbidity from kinetic impact projectiles, stun grenades, acoustic weapons, and chemical irritants.
• American Academy of Ophthalmology (AAO) (United States): Recognizing and Treating Eye Injuries Among Protestors (open globe rupture shielding, traumatic hyphema management, and avoidance of ocular pressure).
• Centers for Disease Control and Prevention (CDC) and National Institute for Occupational Safety and Health (NIOSH) (United States): Riot Control Agents (CS, CN, and OC) Medical Management Guidelines and Treatments for Blast Injuries: Ear and Blast Overpressure Trauma.
• National Health Service (NHS) and Faculty of Pre-Hospital Care, Royal College of Surgeons of Edinburgh (United Kingdom): Pre-hospital blast barotrauma, tympanic membrane perforation dry-ear protocols, and thermal burn cooling guidelines.
• World Health Organization (WHO) (International): Emergency trauma care guidelines for blunt thoracic, cranial, and ocular trauma.

Verwante gidse¶

• Burgerlike onrus
• Skare verpletter en stamp oorlewing
• Oogbeserings
• Kopbeserings