I-Acoustic flashbang, umthelela we-kinetic, nosizo lokuqala lokulimala kwesixuku¶
Izinombolo zezimo eziphuthumayo ziyehluka ngezwe. Leli khasi lisebenzisa u-911, inombolo yase-United States naseCanada. Amanye amazwe amaningi asebenzisa u-112, 999, noma enye inombolo. Thola inombolo yezwe lakini.
Phakathi neziyaluyalu zomphakathi, imibhikisho yomphakathi, noma imisebenzi yokuhlakazwa kwesixuku yabantu bomthetho, ababukele, izintatheli, abezokwelapha, kanye nezakhamuzi bangachayeka ezikhalini eziningi zokulawula isixuku (ngokuvamile ezihlukaniswa izinhlangano zezokwelapha nezamalungelo abantu "njengezikhali ezingabulali"). Lezi zixhobo zihlanganisa ama-kinetic impact projectiles (KIPs) njengezinhlamvu zenjoloba, imizuliswano yenduku yegwebu, imizuliswano yezikhwama zikabhontshisi, namabhomu esipontshi; amabhomu aqhumayo e-pyrotechnic (ama-flashbangs) namabhomu okungqubuzana; imishini ye-acoustic yebanga elide (LRADs / izibhamu zomsindo); kanye nokucasula kwamakhemikhali (isisi esikhalisa izinyembezi / CS, isifutho sikapelepele / OC, namabhola kapelepele).
Naphezu kwegama elithi "okungabulali kakhulu," ucwaningo lwezokwelapha olubuyekezwe ngontanga olushicilelwe ku-BMJ kanye Ne-New England Journal of Medicine lubonisa ukuthi ama-kinetic impact projectiles kanye namadivayisi we-pyrotechnic stun adala ukulimala okubi kakhulu, okusongela ukuphila eduze: ukuvuleka kwamehlo embulunga yonke, ukuphuka kogebhezi oludangele, ukopha kwangaphakathi kwesifuba noma ulwelwesi lwesisu. i-blast overpressure, kanye nokusha okujulile kwe-thermal metal-oxide. Ukwazi indlela yokukhipha umuntu olimele emgqeni womlilo, ukuvikela inhlamvu yeso edabukile ngaphandle kokufaka ingcindezi, ukwelapha ukusha kwe-flashbang blast noma ukugqabuka kwe-eardrum, kanye nokukhipha izinto ezicasulayo ngamakhemikhali kuvikela ngokuphepha ukukhubazeka unomphela futhi kusindisa ukuphila.
Yenza lokhu manje¶
- Susa umuntu olimele eceleni eceleni kolayini womlilo bese uphefumula ngokushesha: Ngaphambi kokuzama ukunakekelwa kwenxeba okuningiliziwe, qondisa noma thwala umuntu olimele umsuse emhubheni womgwaqo ngemuva kwekhava eqinile yesakhiwo (njengekhona lebhilidi likakhonkolo noma udonga lwamatshe) kanye nomoya / umqansi kude namafu esisi esikhalisa izinyembezi, acwila eminyango ephansi nasezitebhisini zesitimela.
- Shayela inombolo yakho yasendaweni yezimo eziphuthumayo ngokushesha ukuze uthole ukuthinteka kwekhanda, isifuba, intamo, noma iso: Dayela u-911 e-United States nase-Canada, 112 ngaphesheya kwe-European Union, 999 e-United Kingdom, noma 000 e-Australia. Inhlamvu yenjoloba noma isikhwama sikabhontshisi esishaya ikhanda, intamo, noma isifuba singabangela ukopha okubulalayo ngaphakathi kwe-cranial, ukugoqeka kwendlela yokuphefumula, noma ukumelwa yinhliziyo (commotio cordis) ngisho noma isikhumba sangaphandle singaphukile. Bona wethu uhla lwezinombolo eziphuthumayo.
- Ungalokothi uthinte, ucindezele, noma uhlikihle iso elishaywe iphrojekthi noma ukuqhuma: Uma inhlamvu yenjoloba, i-paintball/ibhola likapelepele, noma ucezwana lwe-flashbang lushaya iso noma i-orbit, UNGAWUfaki ukucindezela okuqondile esweni futhi UNGAZAMI ukukhipha izingcezu ezibhajwe. Vala iso elimele ngeso eliqinile ngeso eliqinile elivikelayo noma i-dome yensimbi eqinile phezu kwenkomishi ehlanzekile. brow nehlathi) futhi amboze iso elingalimele kanye nokumisa ukunyakaza kwamehlo okunozwela ngesikhathi sokuthutha esibhedlela.
- Ungalokothi ukhahlele, ucoshe, noma uthele amanzi ku-flashbang eshunqayo noma kusisi esikhalisa unyembezi: Amabhomu ensimbi e-Pyrotechnic namagasi egesi ekhalisa izinyembezi ashisa amashaji angaphakathi e-magnesium noma i-aluminium-perchlorate ku-1,000 kuya ku-2,700 degrees Celsius (1,800 kuya ku-4,900) kanye ne-canine ephansi unqamula iminwe noma izinyawo. Suka ngokushesha; uma izingubo zivutha, Yima, Yehlisa, Futhi Ugiqe noma unqande amalangabi ngejazi elisindayo, khona-ke isikhumba esipholile sishisa ngamanzi ahambayo imizuzu engu-20.
- Gcina amanzi, insipho, neminwe INGAKHO endlebeni yokopha noma ekhalayo ngemva kokuqhuma kwe-flashbang: Uma ibhomu eliqhumayo liqhuma eduze kwekhanda lomuntu, i- shockwave engu-170-to-180-decibel ivamise ukugqabula i-eardrum (ulwelwesi lwe-tympanic). Ungalokothi ubeke amaconsi, amanzi, noma ama-swabs kakotini endlebeni. Ngomusa beka iphedi ye-gauze oyinyumba evulekile, eyomile phezu kwendlebe engaphandle ukuze ubambe igazi noma uketshezi oluhlanzekile futhi ufune usizo lwezokwelapha oluphuthumayo.
- Khipha isisi esikhalisa unyembezi noma isifutho sikapelepele ngamanzi alula abandayo noma usawoti (weqa ubisi nama-antacids ezilonda ezivulekile): Hamba emoyeni omusha, ncika phambili ukuze ukugeleza kungageli emehlweni noma ezinqeni, futhi usule amehlo ekhoneni elingaphakathi (eduze nekhala) ngaphandle usebenzisa ukugeleza okusheshayo kwe *amanzi okuphuza avamile ayinyumba ahlanzekile noma Ungalokothi uthele ubisi, i-shampoo yengane, noma i-antacid ewuketshezi esweni elinokulimala, ukuhuzuka, noma i-projectile.
Danger
Uma umuntu eshaywe maphakathi nesifuba ngenhlamvu yenjoloba, i-foam baton round, noma i-beanbag projectile iquleka phakathi nemizuzwana, qala i-CPR yezandla kuphela ngokushesha futhi ubize i-Automated External Defibrillator (AED). Ngisho nangaphandle kokungena ezimbanjeni, umthelela wesivinini esiphezulu se-high-velocity blunt phezu kwefasitela le-T20-millisecond yenhliziyo phakathi kwe-milliseconi yenhliziyo ethize icupha i-fibrillation ye-ventricular esheshayo (commotio cordis). Ukucindezelwa kwesifuba ngokushesha (i-100 kuya ku-120 ngomzuzu) kanye ne-defibrillation ngaphakathi kwe-3 kuya kumaminithi we-5 ukuphela kokungenelela okubuyisela ukushaya kwenhliziyo.
flowchart TD
A["Ukulimala Kokuhlakazwa Kwesixuku Kuyenzeka"] --> B["Hambisa abalimele eceleni ngemuva kwekhava eqinile futhi uphakamise umoya endaweni ephephile"]
B --> C{"Ithini indlela yokulimala eyinhloko?"}
C -->|"I-Kinetic Projectile Impact (Inhlamvu Yerabha, Ubhontshisi, Umjikelezo wesipontshi)"| D{"Isiphi isifunda somzimba esishaywe?"}
C -->|"I-Flashbang / Pyrotechnic Blast noma i-Acoustic LRAD"| E{"Ingabe kukhona ukushisa okushisayo, ukopha ezindlebeni, noma ama-shrapnel?"}
C -->|"I-Chemical Irritant Kuphela (I-Tear Gas CS / Pepper Spray OC)"| F["Hlubula ungqimba lwangaphandle olungcolile, ukucwayiza emoyeni omusha, bese ushayela amehlo ngaphakathi kuye-ngaphandle ngamanzi angenalutho noma ngosawoti."]
D -->|"Ikhanda, Intamo, Isifuba, noma Isisu"| G["Shayela abezimo eziphuthumayo ngokushesha: qapha indlela yokuphefumula/ukuphefumula futhi ubuke ukopha kwangaphakathi noma ukungqubuzana"]
D -->|"Iso noma i-Orbit"| H["I-ZERO pressure on eye: qopha isihlangu senkomishi yephepha esiqinile phezu kwesokhethi enamathambo bese uvala amehlo womabili"]
D -->|"I-Limb Laceration noma Umjikelezo Oshumekiwe"| I["Lawula ukopha ngendandatho eqinile/ukucindezela okuqondile ngaphandle kokuphusha iphrojekthi eshumekiwe ekujuleni"]
E -->|"I-Thermal Burn kusuka ku-Canister noma i-Flash"| J["Ukupholisa ukushiswa ngamanzi ahlanzekile ahlanzekile imizuzu engu-20 bese umboza ngokukhululekile ngokugoqa okungenasici noma isambatho esingenanduku."]
E -->|"I-Eardrum Ephukile (Ukungezwa, ukukhala, ukopha kwendlebe)"| K["Gcina indlebe yomile ngo-100% (awakho amaconsi namanzi), vala indlebe yangaphandle ngokukhululekile nge-gauze eyomile, futhi uhlole ukungqubuzana"]
I-triage matrix: izikhali zokuhlakaza isixuku namaphethini athile okulimala¶
Ukuqonda indlela ebonakalayo yedivayisi ngayinye yokuhlakaza isixuku kuvumela abaphenduli bokuqala nababukele ukuthi babheke ukulimala kwangaphakathi okufihliwe okulula ukukugeja endaweni enesiphithiphithi yomgwaqo.
| Isigaba Sezikhali | Izibonelo Ezijwayelekile Noomakhenikha | Isivinini Somlomo / Okukhiphayo | Ukuhlukumezeka Okuyisisekelo Nezingozi Zezokwelapha | Umthetho Wosizo Lokuqala Obalulekile |
|---|---|---|---|---|
| Ama-Kinetic Impact Projectiles (KIPs) | Imizuliswano yesipontshi engu-40 mm, imizuliswano yenduku yegwebu, izinhlamvu zensimbi eziboshwe ngenjoloba, izinduku zokhuni, namarawundi endwangu "yesikhwama sikabhontshisi" yendwangu engu-12-gauge (egcwele amagremu angu-40 okudubula kwezinyoni okuhola) | 60 kuya ku-100+ amamitha/isekhondi (200 kuya ku-330+ ft/isekhondi); iletha amandla omthelela ashubile anzima (kanye nokuhlukumezeka okungena ngaphakathi uma kuxoshwa ngaphansi kwamamitha ayi-10 kuye kwayi-15 / 33 kuya ku-50 wamafidi) | Ikhanda/Ubuso: Ukuqhekeka kweglobhu (ukungaboni okungapheli), ukuphuka kwe-orbital, ukuphuka kogebhezi olucindezelekile, ukopha kobuchopho. I-Torso: Ukuphuka kwezimbambo, ukungqubuzana kwamaphaphu, ukugoqa kwamaphaphu, ukuphuka ubende/isibindi, commotio cordis. Izitho: Ukuphuka okuyinhlanganisela kanye namarawundi ashumekiwe |
Phatha ukushaya kwe-KIP okusondele eduze kwekhanda, intamo, noma umzimba njengokuhlukumezeka okukhulu okunamandla amakhulu (njengokudubula kwesibhamu noma ilulwane le-baseball); ungalokothi ukhiphe irabha egxilile noma isikhwama sikabhontshisi enxebeni |
| Iziqhumane Ze-Stun Grenade (Ama-Flashbangs) namabhomu e-Concussion | Amathini e-Pyrotechnic aqukethe i-magnesium/aluminium ne-ammonium/potassium perchlorate flash powder charge eklanyelwe ukubhoboza izimbobo zokuphuma | 170 kuya ku-185 ama-decibel (dB) i-acoustic blast wave + 6,000,000 kuya ku-8,000,000 candela ukukhanya okuphuphuthekisayo + ukushisa okukhulu (>1,500 C / 2,732 F) | Ukuqhuma Okuyinhloko: Izigubhu zendlebe eziphukile (ulwelwesi lwe-tympanic), ukungezwa kwezinzwa unomphela, ukulimala kobuchopho okubuhlungu. Ukuqhuma Kwesibili: Ipulasitiki/izinhlamvu zensimbi ezingenasici. Imfundo ephakeme: Ukusha kwe-magnesium ejulile ye-3rd-degree kanye nokunqunywa kwesandla/unyawo uma useduze nomzimba |
Ungalokothi ucoshe noma ukhahlele ithini. Gcina izindlebe ezidabukile zome kakhulu; ukushisa okupholile okushisayo ngamanzi imizuzu engu-20; phatha izilonda ze-shrapnel ngokucindezela okuqondile |
| Ama-Pyrotechnic Tear Gas Canisters (CS / CN Smoke Grenades) | Amathini ensimbi akhipha intuthu ecasulayo amakhemikhali ngokushisa ibhulokhi yangaphakathi ye-pyrotechnic yamasekhondi angu-30 kuya kwangu-90 | Umzimba we-canister ushisa ku-*400 kuya ku-600+ C (750 kuya ku-1,100+ F)**; i-heavy metal projectile uma ixoshwa kusiqalisi esingu-37/40 mm | Ukusha kakhulu uma uthintwa ungaphethe; umthelela we-canister oqondile udala ugebhezi lwekhanda olubulalayo noma ukuphuka kobuso; intuthu eminyene ibangela i-bronchospasm ebukhali kanye nokuphefumula ezindaweni ezivalekile | Ungalokothi uthinte i-canister eshisayo engenawo amagilavu okushisa ebanga lokushisela; ungabambeleli ithini likagwayi ngaphansi kwebhakede lepulasitiki lapho umfutho wegesi ungadabula isitsha |
| Amadivayisi e-Acoustic Ebanga Olude (LRADs / Amakhanono Omsindo) | Izinsimbi eziqondisayo ze-acoustic ezigibele ezimotweni noma ama-tripods akhipha imishayo yefrikhwensi ephezulu egxilile (2,000 kuya ku-4,000 Hz, lapho indlebe yomuntu izwela kakhulu) | 135 kuya ku-162 decibels (dB) imitha elingu-1 (umkhawulo wobuhlungu bomuntu ngu-120-130 dB; umonakalo osheshayo womshini wangaphakathi wendlebe wenzeka ku-140+ dB) | I-acute acoustic trauma, ukubhujiswa kwe-cochlear hair-cell unomphela, i-tinnitus eqeda amandla, i-vestibular vertigo, isicanucanu, ukulahlekelwa ibhalansi, kanye ne-migraine. | Nyathela eceleni uphume kukhoni eqondisayo engu-15-kuya-30-degree ngokushesha (ukuya ohlangothini kwehlisa ukuqina komsindo ngo-20 kuya ku-30 dB); xhuma izindlebe ngokuqinile ngama-earplugs noma iminwe eyigwebu |
| Amabhola kaPepper & I-Paintball Marker Rounds | Ama-plastic sphere acindezelwe agcwele i-capsaicin (PAVA / OC) powder exoshwe kuziqalisi zomoya ocindezelwe | 85 kuya ku-110 amamitha/isekhondi (280 kuya ku-360 ft/isekhondi) | Umthelela wamehlo oqondile udala i-hyphema esheshayo (ukopha ngaphakathi ngaphambili kweso), ukugudluka kwelensi, noma ukugqabuka kwembulunga, okuhlanganiswe yikhemikhali eshisayo ye-capsaicin evuthayo ngaphakathi kwemishuqulu yesikhumba evulekile. | Hlola ukulimala kwamehlo kuqala ngaphambi kokuwasha; hlambulula isikhumba esizungezile ngamanzi apholile ngaphandle kokuhlikihla impushana ye-capsaicin ujule emazingeni aphukile |
Isinyathelo 1: Ukwelapha ukulimala kwe-Kinetic Impact Projectile (Inhlamvu Yerabha ne-Beanbag).¶
Inganekwane esabalele ukuthi "izinhlamvu zenjoloba" zenziwe ngerabha ethambile, egqamile njengebhola lokudlala lengane. Eqinisweni, amaphrojekthi amaningi e-kinetic anethonya elihlanganisa insimbi eqinile, umthofu, noma i-aluminium core ehuqwe ungqimba oluncane lwamamilimitha angu-2 werabha eqinile evuvukele noma igwebu le-polyurethane elicinene, kuyilapho imizuliswano ye-"beanbag" engu-12-gauge iqukethe umcamelo wendwangu ye-Kevlar egcwele amagremu angu-1*40 omlilo wezinyoni**40 (amagremu angu-40) isibhamu ngamamitha angama-70 kuye kwangama-90 ngomzuzwana (amafidi angama-230 kuye kwangama-300 ngomzuzwana).
Uma ixoshwa ebangeni elifushane, noma lapho i-projectile iphuma ku-asphalt egandayiwe futhi iwela phansi kobukele, amandla e-kinetic agxilile asika aqonde esikhumbeni, aphule amathambo, futhi ashumeke i-projectile (kanye nendwangu engcolile evela ezimpahleni zesisulu) ekujuleni kwemisipha noma imigodi yomzimba.
1. I-Ocular Trauma: lapho i-projectile noma ibhola likapelepele lishaya iso¶
Ukubuyekezwa kwezokwelapha kubonisa ukuthi umthelela wamehlo ovela ku-kinetic projectiles uthwala inani eliphakeme kakhulu lokukhubazeka unomphela ezilungiselelweni zokuhlakazeka kwesixuku, okuvamise ukugqabuka inhlamvu yeso (ukulimala kwembulunga evulekile), ukukhipha i-retina, noma ukugcwalisa igumbi elingaphambili ngegazi (i-hyphema ebuhlungu).
Iphrothokholi yokuhlukumezeka kweso ngokushesha: - Qaphela Ukulimala Kwe-Open Globe: Bheka (ngaphandle kokuthinta noma ukudonsa amajwabu amehlo) umfundi omise okwe izinyembezi noma ongajwayelekile, igazi elihlangene ngaphakathi kweiris enombala (hyphema), izicubu ezimnyama ezifana nojeli eziphuma kumhlophe weso, inhlamvu yeso eyisicaba noma egoqekile noma ukubukeka okumnyama okungazelelwe red"). - Faka i-ZERO pressure esweni: Ungalokothi ucindezele iphedi ye-gauze esweni elithintekile, futhi ungalokothi uthele amanzi anomfutho ophezulu noma izingxube ze-antacid ezenziwe ekhaya esweni elibe nomthelela ongemuhle. Ukucindezela inhlamvu yeso eqhephukile kukhipha i-vitreous humor esweni, kubangele ubumpumputhe obungenakulungiseka. - Yakha isivikelo seso esithuthukisiwe esiqinile: Uma ungenayo i-Fox Eye Shield ye-aluminium yezempi, thatha inkomishi yokuphuza ehlanzekile iphepha noma enegwebu, usike noma udabule ingxenye engezansi ukuze ibe ngamasentimitha angu-4 (1.5 amayintshi) ubude, bese unamathisela unqenqema lwenkomishi ngaphezu kwethambo* leso ngezansi kwethambo* nethambo leso uthinta ijwabu leso noma inhlamvu yeso uqobo. - Mboza neso elingalimele (Ukuhlanganisa Amazwe Amabili): Amehlo omuntu ahlanganiswe ejokeni ndawonye ngokwemizwa (ukunyakaza kwamehlo okuvumelanayo): ngaso sonke isikhathi lapho iso lakho langakwesokunxele lizungeza ukuze libheke abezimo eziphuthumayo noma izibani zasemgwaqweni, iso lakho langakwesokudla lihamba ngendlela efanayo ngaphakathi kwesokhethi yalo, ligaya ithambo le-orbital eliphukile noma ukuklebhula izicubu ze-retinal. Ukumboza kancane iso elihle nge-gauze kuthulisa amehlo womabili ngenkathi uqondisa umuntu ngengalo ukuya kwi-ambulensi. - Ukuma kuqondile kuma-degree angu-30 kuya kwangu-45: Gcina isiguli sihlezi siqondile (singalali sicaba futhi singalokothi sigobise ikhanda laso phansi) futhi usifundise ukuthi bangakhwehleli, bashaye amakhala, noma baqinise, okunyusa umfutho we-intraocular. Bona okuningiliziwe kwethu ukulimala kwamehlo umhlahlandlela wosizo lokuqala.
2. Ukuthinteka kwekhanda, intamo, nobuso¶
Induku yegwebu engamamilimitha angu-40 noma inhlamvu yenjoloba eshaya isiphongo, ithempeli, umhlathi, noma intamo ikhipha amandla anele okuphula ugebhezi lwekhanda, ukuchoboza i-larynx (ibhokisi lezwi), noma ukuhlinza umthambo we-carotid.
- Indlela yokuphefumula kuqala entanyeni: I-projectile eshaya ingaphambili lomphimbo ingaphuka indlala yegilo noma i-cricoid cartilage, ibangele ukuvuvukala kwangaphakathi okusheshayo okuvimbe indlela yokuphefumula phakathi nemizuzu eyi-10 kuya kwengu-20. Uma othile eshaywe entanyeni eba nezwi eliyisihosha, kube nzima ukugwinya amathe, ukuphefumula okuphezulu okunomsindo (stridor), noma ukubhavumula/ukuchoboza ngaphansi kwesikhumba sentamo (subcutaneous emphysema), shayela abezimo eziphuthumayo ngokushesha futhi ubagcine behlezi beqondile bencike kancane phambili.
- Isikrini Sokopha Ngaphakathi Kwekhanda: Noma ubani oshaywe ekhanda olahlekelwa ukwazi (ngisho imizuzwana emi-3), ahlanze, adideke, akhule angalingani, abe noketshezi olucacile noma igazi eliphuma emakhaleni noma ezindlebeni, noma ozwa ikhanda elibuhlungu eliya liba limbi kudinga ukuthwebula isithombe se-CT segumbi lezimo eziphuthumayo ngokushesha. Bona wethu umhlahlandlela wokulimala kwekhanda.
3. Ukuhlukumezeka kwesifuba nesisu okufiphele (kanye nama-projectile ashumekiwe)¶
- Never pull out an embedded rubber bullet or beanbag round: At ranges under 15 meters (50 feet), 40-millimeter sponge rounds and 12-gauge lead-shot beanbags regularly punch right through the skin and lodge inside the chest wall, abdomen, or thigh. Treat an embedded projectile exactly like an impaled knife blade: pulling it out in the street can uncork a torn artery. Leave it in place, pack clean gauze around the edges to stabilize it, and transport to a trauma surgeon. (Note for ER doctors: 12-gauge beanbag rounds contain lead birdshot that can rupture open inside the wound, requiring X-ray confirmation that all lead pellets and fabric wadding are surgically removed.)
- Watch for Delayed Internal Bleeding (Spleen, Liver, and Lung): A person struck in the lower ribs or stomach by a baton round often walks away thinking they only have a nasty purple bruise, only to collapse 2 hours later at home from a ruptured spleen, lacerated liver, or tension pneumothorax (collapsed lung). Seek urgent hospital evaluation after any torso impact if the person develops shortness of breath, sharp pain when taking a deep breath, pain radiating to the tip of the left shoulder (Kehr's sign of blood irritating the diaphragm from a ruptured spleen), pale clammy skin, dizziness when standing up, or a rigid, tender abdomen.
Isinyathelo sesi-2: Ukwelapha i-Flashbang (i-Stun Grenade) nokulimala kwe-Acoustic Blast¶
A flashbang (stun grenade) is an explosive device originally designed for military hostage-rescue room entries, not open street crowds. Yet when deployed into dense crowds, a flashbang detonates with an overpressure shockwave of 170 to 185 decibels (more than 1,000 times the acoustic pressure threshold that ruptures human ear structures), a blinding 6-to-8-million-candela light flash, and an intense fireball fuelled by metallic magnesium or aluminum powder.
1. Primary Blast Injury: Ruptured Eardrums (Tympanic Membrane Perforation) and Blast Concussion¶
When a flashbang or concussion grenade detonates within 1 to 5 meters (3 to 16 feet) of a person, the supersonic blast wave slams into the skull and external ear canal:
- Signs of a Ruptured Eardrum: Sudden sharp ear pain at the moment of the blast followed by immediate muffled hearing or deafness on that side, loud roaring or high-pitched ringing (tinnitus), severe spinning dizziness (vertigo and loss of balance from inner-ear semicircular canal shock), and bright red blood or clear/pinkish fluid draining from the ear canal.
- Strict First Aid Rules for Blast Ear Trauma:
- Keep the ear canal 100 percent DRY: Never flush a blast-injured ear with water, saline, or eyewash when washing off tear gas. If a person has a perforated eardrum from a flashbang and someone pours contaminated tear-gas wash water down their ear canal, bacteria and CS chemical crystals enter the middle ear space directly, causing severe middle-ear infections (otitis media) and intense pain.
- Never plug the inside of a bleeding ear canal tightly: If clear fluid or watery blood is trickling out of the ear after a blast or head strike, it may contain cerebrospinal fluid (CSF) from a basilar skull fracture. Never jam cotton balls or earplugs into a bleeding ear canal. Instead, tape a sterile, dry gauze pad loosely over the outside of the ear so fluids can drain freely onto the pad, and seek emergency medical evaluation. (Most clean blast eardrum perforations heal on their own over 4 to 8 weeks if kept completely dry, while larger tears require an ENT specialist patch or tympanoplasty.)
2. Secondary and Tertiary Flashbang Trauma: Shrapnel and Magnesium Thermal Burns¶
Although stun grenades are designed so the heavy steel top and bottom sub-munitions stay intact while gas vents through side holes, modern lightweight composite/plastic-bodied flashbangs and pyrotechnic smoke grenades frequently shatter upon detonation, propelling razor-sharp fragments of burning plastic, metal pins, and hot chemical slag outward at ballistic speeds:
- Cooling Flashbang and Canister Thermal Burns: If a flashbang detonates against someone's leg, backpack, or coat, or if someone accidentally brushes against a 500-degree-Celsius (932-degree-Fahrenheit) tear gas canister:
- Cisha noma yiziphi izingubo zokwenziwa ezivuthayo ngokushesha (inayiloni yokwenziwa noma amajakhethi e-polyester ancibilika abe yitiyela elinamathelayo elishisayo; khumula izingubo zangaphandle ezishunqayo uma zingancibilikisiwe esikhumbeni).
- Gently brush off any loose dry powder residue, then flood the burn with cool, clean running water for a full 20 minutes (never use ice, butter, toothpaste, or baking soda paste on a burn).
- Cover the cooled burn loosely with clean plastic kitchen cling film (laid flat, not wrapped tightly around a swelling limb) or a sterile non-stick dressing and go to a hospital burn or emergency unit.
3. Defending against Long-Range Acoustic Devices (LRADs / Sound Cannons)¶
When an LRAD (Long-Range Acoustic Device) activates its high-pitched deterrent tone, it projects a tightly focused beam of 2,000-to-4,000-hertz sound energy at 135 to 162 decibels. Because decibels are measured on a logarithmic scale, every 10-decibel increase multiplies acoustic energy by 10-fold: 150 decibels is 1,000 times more intense than a 120-decibel rock concert or ambulance siren, causing immediate mechanical shearing of the delicate stereocilia hair cells inside the inner ear cochlea within seconds.
| LRAD Escape Factor | Wrong Action (High Hearing Loss Risk) | Correct Immediate Action | Acoustic Physics Reason |
|---|---|---|---|
| Direction of Movement | Walking straight backward down the middle of the street away from the LRAD truck | Step 90 degrees sideways (laterally) off the center axis and step behind a solid building corner or parked vehicle | LRADs use phased-array transducers to focus sound into a narrow 15-to-30-degree directional cone; moving just 5 to 10 meters sideways drops sound energy by 20 to 30 decibels immediately |
| Ear Protection Method | Holding flat palms loosely over the outside of your ears | Press the fleshy tragus flap of each ear tightly into the ear canal opening with your index fingers (or insert NRR 32+ dB foam earplugs + over-ear earmuffs) | Sealing the ear canal entrance tightly with the tragus or rolled foam earplugs cuts incoming sound pressure by 25 to 33 decibels, keeping inner-ear hair cells below the mechanical tearing threshold |
| Post-Exposure Care | Returning to loud environments or wearing headphones that evening | Total acoustic rest in a quiet room for 24 to 48 hours; see an ENT physician urgently within 24 to 72 hours if muffled hearing or loud ringing persists | Early oral corticosteroid treatment prescribed by an ENT doctor within 48 to 72 hours of acute acoustic trauma can salvage stressed cochlear hair cells before permanent deafness sets in |
Step 3: Safe decontamination of Tear Gas (CS) and Pepper Spray (OC) alongside wounds¶
When a person has both an open physical wound (such as a scrape, laceration, or ruptured eardrum) AND heavy chemical irritant contamination (CS tear gas or OC / PAVA pepper spray), your decontamination technique must avoid poisoning the open wound.
| Decontamination Solution | Safe for Intact Eyes & Skin? | Safe if Person Has an Open Cut, Scrape, or Eye Injury? | Scientific Evidence & Field Verdict |
|---|---|---|---|
| Sterile Normal Saline (0.9% NaCl) or Clean Cold Drinking Water | YES (Gold Standard) | YEBO (100% Iphephile) | Izivivinyo zomtholampilo ezingahleliwe zifakazela ukugezwa kwevolumu ephezulu ngamanzi abandayo avamile noma usawoti oyinyumba osusa amakristalu e-CS futhi apholise ama-OC receptors ngokushesha njengezingxube ezikhethekile, ngaphandle kwengozi yokutheleleka. |
| Ubisi, I-Liquid Antacid (UMTHETHO / Maalox), noma I-Baby Shampoo | Ivamise ukusetshenziswa yizinganekwane zomdabu zasemgwaqeni, AKUnconyiwe odokotela bezimo eziphuthumayo | IVINWE KAKHULU ekusikekeni okuvulekile, esikhunjeni esiphukile, noma ukuhlukumezeka kwamehlo | Ubisi olungeyona inzalo kanye nama-antacid anoshukela/ayizinhlayiyana ethula amagciwane (Pseudomonas, Staph) emanxebeni aluhlaza kanye nemihuzuko yamakhone, futhi ukuhlola okungahleliwe kubonisa ukuthi awasebenzi kangcono kunamanzi angenalutho. |
| Amafutha okupheka, i-petroleum jelly, noma i-Alcohol Wipes | CHA (Yenza ukusha kube kubi kakhulu) | CHA | I-CS i-tear gas powder kanye ne-OC capsaicin resin yi-fat-soluble; izinto zokugcoba ezenziwe ngowoyela zibamba ikhemikhali esikhumbeni, kuyilapho utshwala buvula izimbotshana futhi bubangele ubuhlungu obukhulu |
Ungawahlanza kanjani amehlo nesikhumba ngaphandle kokusabalalisa amakristalu amakhemikhali aye phansi¶
- UNGAcikici amehlo akho: I-CS tear gas empeleni ayiyona igesi; ifu elihle le-aerosol lezinhlayiya zekristalu eqinile encane (2-chlorobenzalmalononitrile) elinemiphetho emincane ecijile. Ukuhlikihla amehlo akho kugaya lawo makristalu aqonde ngqo ku-cornea yakho, okubangela imihuzuko ebuhlungu yekhone.
- Yima emoyeni bese ucwayiza ngokushesha: Uma usuphumile efwini lentuthu, bhekana nomoya ohlanzekile, khipha izingalo zakho emaceleni akho, bese ucwayiza ngokushesha ukuze izinyembezi zemvelo ziqale ukuntanta izinhlayiya.
- Suka usuka ekhaleni uphumele ngaphandle ube uncike phambili: Tshekisa ikhanda lakho phambili nangaseceleni (ngakho amanzi okugeza angcolile aconsa aqonde phansi kunokuba ehle entanyeni, esifubeni, nasembelethweni, lapho isikhumba esincanyana sishisa khona kakhulu). Thela umfudlana onganyakazi** wamanzi abandayo ahlanzekile noma usawoti oyinzalo** esweni elivulekile uqala ekhoneni elingaphakathi eduze kwebhuloho lekhala bese ugeleza uphumele ngaphandle unqamule ithempeli imizuzu emi-5 ukuya kweyi-10.
- Qaphela I-Asthma eqinile noma i-COPD bronchospasm: Ukuhogela isisi esikhalisa izinyembezi i-CS noma isifutho sikapelepele kubangela ukuminyana kwendlela yomoya kubantu abanesifuba somoya noma isifo somoya esisebenzayo. Basize bahlale baqonde emoyeni omusha futhi ubasize ekusebenziseni i-albuterol / salbutamol rescue inhaler* yabo enqunyiwe (2 kuya ku-4 amafu nge-spacer); uma ukuhefuzela kuqhubeka noma izindebe ziba luhlaza okwesibhakabhaka, shayela abezimo eziphuthumayo zezokwelapha ngokushesha.
- Ishawa ebandayo ekhaya (ngaphambi kokushisa): Lapho ufika ekhaya, khumula izingubo zakho ezingcolile ngaphakathi egalaji noma endlini yokugezela uzifake esikhwameni sepulasitiki esivaliwe. Ngena eshaweni ebanda ngamatshe imizuzu yokuqala emi-5 kuyilapho ubhekise ikhanda lakho phambili ukuze amanzi angazigezi izinsalela zezinwele emzimbeni wakho ongezansi; ukuthatha ishawa esishisayo kuqala kuvula izimbotshana zesikhumba futhi kuvuselele amakristalu e-CS avaleleke, kubangele umuzwa omusha wokushiswa komzimba ogcwele.
Thatha isifundo
Uma othile ehlushwa ukopha okukhulu, ukuhlukumezeka esifubeni, noma ukucindezeleka emoyeni ngesikhathi esiphuthumayo somphakathi, ukuqeqeshwa ngezandla kwenza umehluko. Sincoma ngokuqinile ukuthatha isifundo esigunyaziwe esithi Misa ukopha kanye nesifundo sosizo lokuqala olujwayelekile, i-CPR, ne-AED esivela emphakathini wakho kazwelonke we-Red Cross noma i-Red Crescent, i-St John Ambulance, noma isikhungo sasendaweni sokuhlukumezeka.
Imibuzo evame ukubuzwa¶
Can a "rubber bullet" or "beanbag round" really fracture a skull or kill someone?
Yes. Despite the casual name "rubber bullet," kinetic impact projectiles (KIPs) are heavy batons made of hard vulcanized rubber, dense polyurethane foam, or metal cores coated in rubber, fired from 37 mm or 40 mm launchers or 12-gauge shotguns at speeds of 60 to 100+ meters per second (135 to 225+ miles per hour). A systematic medical review published in the journal *BMJ Open* analyzing 1,984 people injured by kinetic impact projectiles found that 53 died from their injuries and 300 suffered permanent disability (most commonly permanent blindness from ruptured eyes, traumatic brain injuries from depressed skull fractures, and ruptured abdominal organs). Any hit to the head, neck, chest, or abdomen must be treated as a potentially life-threatening trauma emergency.
Why did the person I was helping tell me NOT to pour liquid antacid (Maalox) or milk into their eyes after a pepper ball hit them?
Because a pepper ball or close-range blast causes **mechanical corneal abrasions or open globe lacerations** on top of the chemical irritation. Pouring unsterile milk (which teems with bacteria once warm in a backpack) or chalky particulate liquid antacid (magnesium/aluminum hydroxide) into an eye that has a scratched cornea or ruptured eyeball introduces foreign particles and bacteria deep into the eye and can cause permanent blindness. In addition, a landmark randomized clinical trial published in the *Western Journal of Emergency Medicine* compared baby shampoo, milk, liquid antacid, lidocaine, and plain water for pepper spray decontamination and proved that **plain cold water / sterile saline works just as fast as every other substance** while being 100 percent sterile and safe for open wounds.
What should I do if a smoking tear gas canister or flashbang lands right at my feet?
Never bend down to pick it up with your bare hands, never kick it with a thin sneaker, and never trap it underneath a sealed plastic bucket or traffic cone. First, if the canister is a **flashbang / stun grenade** (which detonates 1.5 seconds after release) or an instantaneous blast tear-gas grenade, trying to grab or kick it can blow your hand or foot off at the wrist or ankle. Second, if it is a **pyrotechnic burning CS tear gas canister**, the metal shell burns at 400 to 600 degrees Celsius (750 to 1,100 degrees Fahrenheit), causing instant third-degree contact burns through ordinary gloves, and trapping a burning canister inside a tight container can cause pressure buildup and explosion. The safest action for any bystander is to **turn away, shield your eyes and ears, and move 15 meters (50 feet) laterally and upwind immediately**.
My ear has been ringing loudly and sounds muffled like I am underwater ever since a flashbang went off near me yesterday. Should I wait for it to clear up on its own?
Do not wait. Go to an urgent care clinic, emergency department, or Ear, Nose, and Throat (ENT / Otolaryngology) specialist within the **first 24 to 72 hours**. A flashbang blast wave (170 to 185 dB) can cause two distinct injuries: a physical hole torn in your eardrum (**tympanic membrane perforation**), which requires an otoscope check and strict dry-ear precautions to prevent infection, AND acute inner-ear hair-cell damage (**acute sensorineural acoustic trauma**). If you have suffered acute sensorineural hearing loss from a blast or LRAD, an ENT doctor can prescribe a short, high-dose burst of oral corticosteroids (such as prednisone) within the first 48 to 72 hours, which reduces inner-ear inflammation and significantly improves the chances of recovering your hearing before the damage becomes permanent.
Why should I never wear contact lenses if there is any chance of being caught near tear gas or pepper spray?
Soft contact lenses act like microscopic sponges that soak up and trap dissolved CS tear gas chemicals and oily OC capsaicin resin directly against your cornea. Even if you flush your eyes with a liter of saline, the chemical stays trapped underneath the contact lens, continuing to burn your cornea until it causes a severe corneal ulcer. Worse yet, trying to pinch a contact lens out of your eye in the street while your fingers are coated in tear gas crystals rubs the crystals straight into your eye. If you are ever exposed to tear gas while wearing contacts, have someone with clean, gloved (or thoroughly washed) hands help you remove and **permanently throw away** the contact lenses (soft lenses contaminated with CS or OC can never be cleaned and reused).
How do I wash tear gas (CS) powder out of my clothes and skin when I get home without re-gassing my whole bathroom?
CS tear gas is a fine solid crystal powder clinging to your hair, jacket, and pants. When you get home, strip off your outer clothes on an outdoor porch, balcony, or garage floor (never shake them out in your bedroom) and seal them in a plastic bag. Step into the shower and turn the water to **cold for the first 5 minutes** while leaning your head forward so hair runoff goes straight down the drain without running over your chest and groin (hot water opens your pores and vaporizes CS crystals into steam, gassing you all over again). After 5 minutes of cold rinsing, wash with mild soap and lukewarm water. Wash the contaminated clothes **separately from all other family laundry** using cold water and standard laundry detergent, and run them through two full rinse cycles before drying.
Imithombo ihloliwe¶
- IKomidi Lamazwe Ngamazwe Le-Red Cross (ICRC) kanye Nenhlangano Yamazwe Ngamazwe Ye-Red Cross ne-Red Crescent Societies (IFRC) (Yomhlaba Wonke): Usizo Lokuqala Ezingqungqutheleni Ezihlomile Nezinye Izimo Zobudlova imihlahlandlela yomtholampilo yokulimala kokuqhuma, ukuhlukumezeka komthelela we-kinetic, ukuvikelwa kwe-ocular, nokususwa kwamakhemikhali okucasulayo.
- I-Physicians for Human Rights (PHR) kanye ne-International Network of Civil Liberties Organizations (INCLO) (United States / International): Ibulalayo Ngokuzifihla: Imiphumela Yezempilo Yezikhali Zokulawula Isixuku kanye ne-BMJ Open ukubuyekezwa okuhlelekile kokufa nokufa okuvela ku-kinetic impact projectiles, izikhali eziqhumayo zamakhemikhali, amabhomu anamandla, amabhomu anamandla,
- I-American Academy of Ophthalmology (AAO) (United States): Ukubona Nokwelapha Ukulimala Kwamehlo Phakathi Kwababhikishi (ukuvikela ukugqabuka kwembulunga yonke, ukuphathwa kwe-hyphema ebuhlungu, nokugwema ukucindezela kwe-ocular).
- Centers for Disease Control and Prevention (CDC) kanye neNational Institute for Occupational Safety and Health (NIOSH) (United States): Ama-Riot Control Agents (CS, CN, and OC) Izinkombandlela Zokulawulwa Kwezokwelapha kanye Nokwelashwa Kokulimala Kokuqhuma: Ukuhlukumezeka Kwendlebe Nokuqhuma Kwengcindezi.
- Isevisi Yezempilo Kazwelonke (NHS) kanye Nomnyango Wokunakekelwa Kwangaphambi Kwesibhedlela, I-Royal College of Surgeons yase-Edinburgh (United Kingdom): I-barotrauma ye-pre-hospital blast, i-tympanic membrane perforation dry-ear protocols, nemihlahlandlela yokupholisa ukushisa okushisayo.
- Inhlangano Yezempilo Yomhlaba (i-WHO) (Yomhlaba Wonke): Imihlahlandlela yokunakekelwa kwe-Emergency Trauma for blunt thoracic, cranial, and ocular trauma.