Wet Concrete (Cement) Alkali Kupisa uye Lime Dust Kukuvara Kwemaziso¶

Kungave kudururira patio slab nemusi weMugovera masikati, kuisa dhaka rezvidhinha, kuisa stucco kana plaster, kana kuparadzira raimu yekurima pamunda kana nzvimbo yemitambo, kushanda ne Portland simende, simende yePortland, kongiri yakanyorova, dhaka remasonry, hydrated lime, uye yakaoma quicklime (calcium oxide, $\text{CaO}$) inofumura ganda rinoparadza uye rinoparadza zvakanyanya maziso. kuvaka nekuvandudzwa kwemba. Panguva iyo mvura inosanganiswa muupfu yakaoma yePortland simende (iyo ine 60 muzana kusvika 65 muzana yecalcium oxide nekurema ), kemikari hydration reaction inoshandura poda kuita saturated solution yecalcium hydroxide ($\text{Ca(OH)}_2$), pamwe ne **sodium hydroxide ($\text{NaOH\potassium*hydroxide)**} kutyaira {NaOH\potassium*hydr)} uye $KO alkalinity yekongiri yakanyorova inosvika pakukonzeresa kunotyisa **$\text{pH ye12.5 kusvika 14.0}$, iyo pH yakafanana neyemvura yekuvhura uye yekuchenesa oveni.

Kusiyana nekutsva kwemafuta kana bhatiri-asidhi inoputika iyo inobaya pakarepo uye inokumanikidza kuti udzose ruoko rwako kumashure, inonyorovesa kongiri inonyepedzera, yakanyarara inonyungudika: nekuti alkaline calcium hydroxide inotanga kuita chiveve chepamusoro tsinga dzeganda uku ichiisa mafuta eganda mu sipo (liquefactive necrosis akapfeka), munhu anopfugama anogara akapfeka kongiri yakapfachukira kumusoro kwebhutsu yavo yebasa, kazhinji inonzwa ** zero kurwadziwa kwekutanga 2 kusvika 6 maawa . Mushure mekupera basa uye kubvisa bhurugwa kana bhutsu panguva yekudya kwemanheru ndipo pavanoona kuti ganda repamabvi, shins, kana zviziso zvemakumbo ranyungudutswa kuita ** yakadzika, yepepuru-dema kana yedehwe-chena yechitatu-dhigirii yakazara-ukobvu kemikari inopisa ** inoda kuvhiyiwa kuvhiyiwa uye kupatsanurwa-kukora kweganda kubatanidzwa. Dambudziko rakaenzana kupfachuka kweguruva reraimu, purasita, kana dhaka rakanyorova muziso , apo maion hydroxide anopinda nemukati mecornea mukati ** isingasviki 15 kusvika 60 masekonzi ukuwo zvimedu zvichena zvelime zvakadzika zvakadzika pasi peziso repamusoro (paziso repamusoro-soro kunze kwekunge ziso remvura richiramba richienda kumvura), muviri wakapenengura mukati ndokutsvaira.

Iri gwara rakazara rinopa nhanho-ne-nhanho yemunda decontamination, iyo "Dry Powder Brush-Off Rule" yekukurumidza, pH buffering protocol mushure mekugeza, uye yekukurumidzira kudiridza kwemaziso uye eyelid-eversion maitiro anoenderana neUnited States Occupational Safety and Health Administration (OSHA), National Institute for Occupational Safety / UK Safety / Health CDC, the American Executive CDC and Health (NISH) (HSE), uye Royal College yeOphthalmologists.

Ita izvi ikozvino¶

Kana iwe kana mumwe munhu ari padyo aine kongiri yakanyorova, dhaka, grout, stucco, kana lime poda yakaoma paganda, yakanyikwa muzvipfeko zvavo kana bhutsu, kana yakapushwa mumaziso avo:

ZVESE Lime, simende, dhaka, kana Plaster iri muZiso: Tanga Kutsvaira Mukati Masekonzi gumi uye Flip Eyelid:
USAITA kumirira kutyaira uchienda kuchipatara usati wageza ziso: Alkali inopinda mucornea yemunhu mukati pasi pemasekonzi makumi matatu. Bata maziso ako akavhurika neminwe yako uye woramba uchipeperetsa ziso nerukova rwakapfava rwemvura yemupombi inodziya, mvura yemubhodhoro, kana sterile yakajairika saline (kana Diphoterine amphoteric solution kana iri panzvimbo) kwe* zvishoma zve30 kusvika 60 maminetsi akazara**.
**Bvisa macontact lens nekukasika ** paunotanga kutsvaira.
tsvaira machuru eraimu akavharirwa kubva pasi pemaziyero: Nekuti mafufu akasimba eraimu, dhaka, kana purasita anohwanda mukati meyakadzika pasi pemapepa emaziso ekumusoro neepazasi onyungudika kuita $\text{pH } 13$ alkali kwemaawa, dhonzera chivharo chezasi pasi uye *flip (evert) pukuta ziso repamusoro kana pedonje bvisa twunhu tuchena twega twega twakavharirwa nedonje rakanyorova uchiramba uchidiridza uchienda kudhipatimendi renjodzi (ona kukuvara kwemaziso)
** Isa "Dry Powder Brush-Off Rule" Usati Wabatidza Mvura Yesimende Yakaoma kana Quicklime paGanda **:
Kana maoko ako, mutsipa, kana zvipfeko zvakaputirwa mu DRY simende powder, dry mortar mix, kana yakaoma quicklime (calcium oxide, $\text{CaO}$), **kurura mbatya dzine guruva uye BHUKURA zvinyoro nyoro kana kuzunza upfu hwakaoma sezvinobvira nemucheka wakaoma kana bhurasho rakapfava USATI waisa mvura **.
Kuwedzera kuerera kwemvura (kana dikita) zvakananga pane gobvu remvura yakaoma kunokonzeresa mhirizhonga exothermic hydration reaction ($\text{CaO} + \text{H}_2\text{O} \rightarrow \text{Ca(OH)}_2 + \text{Intense Heat up to } 150^\circ} 300^\circ\text{F}$) iyo inobika ganda rako nemafuta panguva imwe cheteyo iyo pH 13 alkali inonyungudutsa nemakemikari.
Bvisa Mabhurugwa Akanyoroveswa Nekongiri, Masokisi, Bhutsu, Magirovhosi, neMhete Pakarepo:
Nguva inonyorova kongiri inopfapfaidza nemumabvi etirauzi rako kana kudirana pamusoro pebhutsu yako yebasa, **chimira kushanda nekukasika **. Bvisa bhurugwa nyoro, masokisi, bhutsu, wachi, uye mhete dzemunwe ipapo. Usambofa wakaramba uchishanda mukongiri-yakanyoroveswa zvipfeko "kwemamwe maminetsi makumi matatu kuti upedze kutsika-tsika slab."
**Mafashamo Paganda neMvura Inomhanya Yakakwira Kwemakumi matatu kusvika makumi matanhatu Akazara Maminiti **:
Kana poda yakaoma yabviswa uye mbatya dzakanyorova dzakanyudzwa nekongiri dzabviswa, geza ganda pasi pemvura yakasimba, inoenderera yemvura inotonhorera inoyerera yepombi kana hose kwe 30 kusvika 60 maminetsi kusvikira kutsvedza, kunzwa sipo kwanyangarika kubva paganda.
Shandisa pH-neutral kana kuti acidic fluid sipo (usambofa wakaomesesa abrasive pumice scrubbers, anokwenya epidermis isina simba).
Inosarudzika Sekondari Yemumba Vhiniga Sukurudza paGanda Rakanaka/Papamusoro (CHETE Mushure meKunyatsogezwa Mvura):
Kusiyana neyakaomeswa mvura sulfuric acid kana lye (apo kudira neutralizer yakasimba pachemikemikari yakasvibirira kunokonzera kupisa kwakanyanya), occupational dermatology uye mirairo yekuchengetedza yekuvaka (kusanganisira OSHA kongiri yekuchengetedza mabulletins uye kupisa-center simende protocol) cherechedza kuti ** mushure mekutsvaira simende yese inooneka kubva paganda nemvura inoyerera kwemaminetsi gumi nemashanu kana dabbrin. kongiri-yakasimwa ganda ne ** dilute yemumba vhiniga chena (5 muzana acetic acid) yakanyungudutswa 50:50 nemvura ** (kana buffered phosphate/amphoteric rinse) inobatsira neutralize yakasindimara alkaline calcium hydroxide ions ($\text{pH } 13$) inosungwa mukati mekunze kwestratum corneum pores yemvura inotonhorera. (USAGARA waisa vhiniga mumaziso kana pamaronda akazaruka akazaruka akadzika).
Enda kuDhipatimendi reChipatara Emergency kana Burn Center kune Chero Chepepuru, Dema, White, kana Blistered Ganda:
Nekuti kongiri yakanyorova inokonzeresa ** yakazara-kukora liquefactive necrosis ** inotaridzika zvinonyengera yakafuratira kana yakakuvara paZuva 1, chero kongiri inotsva pamabvi, shins, zviziso zvemakumbo, kana maoko anoratidza ** bluish-yepepuru discoloration, yakacheneruka waxy-white kushaya chiveve, blisters, kana ulceration ** inoda kukurumidza kupiswa nemishonga inorwisa mabhakitiriya.

Nei Kupfugama muWat Concrete muJeans Kunokonzeresa Kupisa Kwetatu-Degree Kunoda Ganda Graft

Zvinopfuura ** 80 muzana yekutsva kwekongiri muchipatara kwakakomba ** kunoitika ku mabvi apamberi uye shin yevashandi kana varidzi vedzimba vakapfugama pasarabhu yekongiri ichangobva kudururwa vakapfeka bhurugwa rebasa redenim, kana kutenderedza maziso netsoka dzevashandi vane bhutsu dzakazadzwa nesamende yakanyorova. Wet denim inoshanda se caustic poultice: inodzima pH 13.5 liquid calcium hydroxide yakananga paganda re kneecap, ukuwo jecha rakakasharara mukongiri rinokuya kunze kwekudzivirira kweganda nekufamba kwese kwemabvi, uye huremu hwemuviri hwemushandi hunosvina kubuda kweropa kubva mudermal capillaries. Mukati me2 kusvika kumaawa 4, ganda riri pamusoro pemabvicaps ese ari maviri rinonyungudika kusvika pasi pemafuta kana patellar tendon, kazhinji pasina munhu anonzwa chimwe chinhu kunze kwekudziya kwakadzikama kusvikira vasimuka nekubvisa hembe manheru iwayo.

Emergency kongiri, simende, uye lime triage flowchart¶

flowchart TD
    Start["Exposure kune Wet Concrete, Portland Cement, Mortar, Plaster, kana Quicklime"] --> SiteCheck{"Kufumurwa kwakaitika kupi?"}

    SiteCheck -->|Eye Splash: Lime Dust, Wet Mortar, Concrete,<br/>Plaster, or Whitewash in the Eye| EyeUrgent["TRUE OCULAR EMERGENCY (Cornea Yakapinda mu <30 Seconds)<br/>1. Tanga kugezesa nemvura inodziya/saline PASINA 10 SECONDS<br/>2. Bvisa contact lens; bata ziso rakashama kurwisa blepharospasm<br/>3. Diridza nguva dzose kwe30 kusvika 60 FULL MINUTES<br/>4. GADZIRA MAVHIDHI EYELID EVERSION: Flip mavharo ekumusoro & ezasi kuti upepere kunze<br/>zvese twunhu twuchena twakavharirwa lime/samende grit kubva kufornices<br/>5. Kutakura kuenda kuDhipatimendi reEmergency yeMorgan Lens kudiridza kusvika kubvarura pH = 7.0-7.4"]

    SiteCheck -->|Skin / Clothing Exposure:<br/>Hands, Knees, Shins, Ankles, or Arms| DryVsWet{"Iko kemikari paganda DRY poda kana WET slurry?"}

    DryVsWet -->|Dry Powder: Dry Quicklime (CaO),<br/>Dry Portland Cement, or Dry Mortar Mix| BrushFirst["STEP 1 (DRY POWDER RULE): Bvisa guruva mbatya & BRUSH OFF<br/>ose hupfu hwakaoma nemucheka wakaoma / bhurashi USATI wawedzera mvura<br/>(Inodzivirira 150 ° C exothermic hydration heat kupisa paganda rinodikitira)"]

    DryVsWet -->|Wet Slurry: Wet Concrete, Mortar, Grout,<br/>Stucco, or Concrete-Soaked Pants/Boots| StripWet["STEP 1: Mira kushanda nekukurumidza. Bvisa bhurukwa, masokisi, bhutsu, magirovhosi, mawachi, nemarin'i eminwe."]

    BrushFirst --> WaterFlush["STEP 2: Ganda remafashamo rine yakakwira-vhoriyamu inotonhorera mvura inoyerera kwe30 kusvika 60 MAMINUTES<br/>kusvikira slimy, kunzwa sipo (saponified fat) yapera"]
    StripWet --> WaterFlush

    WaterFlush --> VinegarStep["CHITATU CHECHITATU (Ganda Chete - HAKUNA Maziso): Mushure memaminetsi gumi nemashanu-20 ekugezesa mvura,<br/>gezesa ganda rine simende kwenguva pfupi nevhiniga chena yemumba <br/>(5% acetic acid yakasanganiswa 1:1 nemvura) kubhafa yakasara pH 13 alkali,<br/>wozokwirisa 0 imwe maminitsi 15 nemvura inoyerera."]

    VinegarStep --> DepthEval{"Ongorora kutaridzika kweganda (Iye zvino uye pamaawa 4-12):<br/>Pane mavara epepuru/blue/black, chiveve chichena,<br/>mablister, kana kurwadziwa kwakanyanya?"}

    DepthEval -->|Yes: Discoloration, Blisters, or Kneeling/Boot Burn| BurnUnit["ENDA KUCHIPATARA BURN CENTRE IYE HAPO<br/>Kongiri yakanyorova inokonzera kunyarara 3rd-degree full-thickness liquefactive necrosis<br/>inoda kukurumidza kuvhiyiwa tangential kubviswa uye kubatanidza ganda"]
    DepthEval -->|No: Only mild dry redness ("Cement Dermatitis")| DermCare["Isa zvinonhuwira-isina emollient cream; tarisisa kwemaawa makumi maviri nemana<br/>(Tsvaka rubatsiro rwekurapa kana kunonoka maronda, chrome allergy, kana kurwadziwa)"]

Pathophysiology: Iyo 4-Fold Mechanism yeSimende uye Kuparadza Lime¶

Nei kongiri yakanyorova kana lime ichinyanya kukuvadza ganda remunhu nemaziso kupfuura asidhi yekuenzana kusungwa? Maitiro mana akasiyana emakemikari uye emuviri anorwisa muviri panguva imwe chete:

1. Yakanyanya Alkalinity ($\text{pH } 12.5\text{ kusvika }14.0$) uye Liquefactive Necrosis¶

Dry Portland simende inogadzirwa nekudziisa limestone nevhu muchoto kugadzira anhydrous calcium silicates uye calcium oxide (quicklime, $\text{CaO}$), pamwe chete netrace sodium oxide ($\text{Na}_2\text{O}$) uye **potassium oxide ($\text*{K}$2) Mvura inodziya inowedzerwa:

\[\text{CaO (Quicklime)} + \zvinyorwa{H}_2\text{O} \longrightarrow \text{Ca(OH)}_2\text{ (Calcium Hydroxide, pH 12.5 kusvika 13.0)} + \zvinyorwa{Kupisa}\]

\[\text{Na}_2\text{O} / \text{K}_2\text{O} + \text{H}_2\text{O} \longrightarrow 2\text{NaOH} / 2\text{KOH (Sodium/Potassium Hydroxide, pH 13.5 kusvika 14.0)}\]

Liquefactive Necrosis uye Saponification: Kusiyana neakasimba acids (ayo anogadzika mapuroteni epamusoro kuita yakaoma eschar crust inovharira kudzika kweasidhi kupinda), iyo yemahara hydroxide ion ($\text{OH}^-$) mukongiri yakanyorova ** saponify iyo fatty acids mumasero emunhu ** (ichishandura ganda rako pachako kuita maprotein lipids) soluble alkaline proteinates.
Nei Konkrete Ichinzwa "Inotsvedza kana Sipo" paminwe Yako: Kana vashandi vekugadzira vachinzwa firimu rakatsetseka, rinotsvedzerera, rine sipo paminwe yavo isina kupfeka vachibata dhaka rakanyorova, **iyo firimu rinotsvedza HAISI sipo musimende: iganda rekunze romushandi remafuta eganda richiitwa pH3 oxide.

2. Exothermic Heat of Hydration (The Quicklime Thermal Burn)¶

Kana yakaoma quicklime (calcium oxide, $\text{CaO}$) kana guruva resamende reraimu rasangana nedikita mukati mekora yehembe, sokisi, kana bhutsu, kana kusaswa nemvura shoma, iyo exothermic slaking reaction inoburitsa klzzwxh:0023. Mucheka wakaoma mukaka wakaoma wakanyoroveswa nedikita paganda remushandi unokwanisa kusvika kumatembiricha e $80^\circ\text{C}\text{ kusvika }150^\circ\text{C}$ ($176^\circ\text{F}\text{ kusvika }302^\circ\text{F}$), pamusoro pekupisa kwepH. kupisa.

3. Hygroscopic Desiccation (Cellular Dehydration)¶

Kuomesa uye kurapa simende inotyisa ** hygroscopic **: crystalline calcium silicate hydrate matrix inosveta mvura kubva pane zvese zvayabata kuti irape nekuomesa. Kana yakanyorova kana kuomesa simende yakagara paganda remunhu, inokwevera mvura mukati meiyo epidermal uye dermal masero, ichidonhedza uye ichidzikisa matishu ichitarisa alkaline pore fluid.

4. Mechanical Aggregate Abrasion + Hexavalent Chromium ($\text{Cr}^{6+}$) Sensitization¶

** Jecha uye Aggregate Kukuya : Kongiri yakanyorova uye dhaka zvakazara nejecha rakapinza requartz uye akapwanyika matombo akaunganidzwa. Kana kongiri yakanyorova ichipinda mukati mebhutsu kana kunyura nemabvi edenim jeans, nhanho imwe neimwe kana mabvi anochinja anoita sejecha rakakoshwa, ** nemuchina achikuya kure inodzivirira stratum corneum barrier uye kuvhura yakananga micro-channel yepH 13 calcium hydroxide kuti ifashamire yakananga mukadzika dermis.
Hexavalent Chromium ($\text{Cr}^{6+}$) Allergic Contact Dermatitis: Zvigadzirwa zvechisikigo nezvigayo zvesimbi zvinosiya huwandu hwemvura inonyungudika hexavalent chromium ($\text{Cr}^{6+}$) muPortland simende inodiwa (kunze kwekunge yasarurwa neEuropean Union neEuropean Union). Pamusoro pekuratidzwa kakawanda, $\text{Cr}^{6+}$ inopinda muganda rine alkali-yakakuvara kuti itange maronda akanyanya, asingaperi, allergic cement dermatitis ("bricklayer's itch") uye kubuda "chrome maronda."

Kuenzanisa kweSimende, Concrete, Mortar, uye Lime Hazards¶

Material & Common Use	Active Chemical & Wet pH	Primary Clinical Injury Pattern	Yakananga Yekutanga Rubatsiro & Decontamination Protocol
Wet Ready-Mix Concrete, Screed, & Masonry Mortar (Madhiraivha, mapatio, nheyo, zvidhinha, tile thinset/grout)	Calcium Hydroxide ($\text{Ca(OH)}_2$) + $\text{NaOH}/\mavara{KOH}$. Kunyorova pH: `12.5 to 13.8`.	Kunyarara Kwakadzika Kwakazara-Kukura "Kupfugama Kupisa" uye "Boot-Top Burns" : Kusina kurwadziwa kwe2 kusvika maawa 6; inopa husiku ihwohwo neganda repepuru-blue, grey, kana jena chena pamusoro pematellae, shins, kana zvitsitsinho.	Bvisa bhurugwa/bhutsu dzakanyorova pakarepo; geza nemvura inotonhorera inoyerera kwe 30 kusvika 60 min ; pfupi dilute 5% yemumba vhiniga sukurudza paganda mushure mekutanga kushambidzwa kwemvura, kuteverwa nekuyerera kwemvura; kupisa nzvimbo yekuongorora yekuvhiya kubviswa / kubatanidza .
Dry Quicklime / Unslaked Lime / Burnt Lime ($\text{CaO}$) (Kugadzikana kwevhu, kugadzirwa kweroadbed, kugadzirwa kwepH yekurima, kugadzira simbi/girazi, kutara mutsara wenhandare zvisiri pamutemo)	Yakachena Calcium Oxide ($\text{CaO}$). Inoita semvura/dikita kuita $\text{Ca(OH)}_2$ ($\text{pH } 12.8$) + Extreme Exothermic Heat ($> 100^\circ\text{C}$).	Yakasanganiswa Exothermic Thermal + Liquefactive Alkali Burn : Ganda rekudikitira rakafukidzwa nequicklime rinotambura nekukasira kutsva kwemafuta + maronda akadzika caustic; inoparadza corneal melting kana yakafuridzirwa mumaziso.	1. Usambofa wakanyorova omesa quicklime paganda kutanga. Bvisa hembe uye kwesha upfu hwakaoma netauro/bhurashi rakaoma. 2. Wobva wafashukira nemvura yakawanda inoyerera kwemaminetsi makumi matatu kusvika makumi matanhatu kutakura kupisa nealkali. 3. Kupfapfaidza kweziso: Kudiridza nekukasika 60-min + double eyelid eversion kubvisa zvidimbu zve lime yakasimba.
Hydrated Lime / Slaked Lime ($\text{Ca(OH)}_2$), Limewash, Stucco, & Plaster yeParis Yakasanganiswa neLime (Kunamira, masonry enhoroondo, whitewash, kuchenesa mvura, pickling lime)	Calcium Hydroxide ($\text{Ca(OH)}_2$). Kunyorova pH: `12.4 to 12.8`.	Overhead Plasterer's Eye Splash: Madonhwe anodonha e lime plaster yakanyorova kana limewash anorova maziso emushandi anotarisisa kumusoro, achiisa zvimedu zvecalcium hydroxide zvakadzika mukati yepamusoro conjunctival fornix pasi peziso repamusoro peziso.	Pakarepo 30-kusvika-60-maminetsi ekudiridza ocular + inosungirwa epamusoro eyelid eversion pamusoro pedonje swab (uye Desmarres lid retractor tsvaira + EDTA chelation muchipatara) kuburitsa akaiswa calcified plaques.
Dry Bagged Portland Cement Dust (Kusanganisa kongiri nemaoko, kutsvaira nzvimbo dzekuvaka, kucheka yakaoma simende board)	Anhydrous Calcium Silicates + $60\%$ Calcium Oxide ($\text{CaO}$) + tsvaga Hexavalent Chromium ($\text{Cr}^{6+}$).	1. Ganda Rinodikitira: Rinochinja kuita pH 13 simende yakanyorova mukati mebhutsu dzinodikitira, magirovhosi, uye makora ehembe. 2. Inhalation : Nosebleeds, caustic bronchitis, uye kwenguva refu silicosis (kubva kucrystalline silica). 3. Chronic Ganda: Fissured irritant & $\text{Cr}^{6+}$ allergic contact dermatitis.	Geza guruva rakaoma paganda usati wageza nemvura inotonhorera uye pH-neutral sipo; pfeka N95 / FFP3 respirator uye magirazi akasimba-akakodzera paunenge uchisanganisa mabhegi akaoma.

Yakadzika Dive 1: Sei Masvikiro Ekongiri Akanyorova Achiita Senge "Maronda Asingakuvadzi" paZuva 1 (Kutarwa Kwechipatara)¶

Imwe yemisungo ine njodzi mukurapa kwekukurumidzira ndeyekuti ** kukora-kwakazara (yechitatu-dhigirii) alkali kutsva kubva kune yakanyorova kongiri HAItaridzi semurazvo kana kupisa kunopisa murwere paanotanga kubvisa bhurugwa kana bhutsu **:

** Maawa 0 kusvika 4 (The Numb Soapy Phase)**:
Nepo kongiri yakanyorova ichinyura nemabvi ejean yevashandi kana kutsvedza mukati mebhutsu dzavo, ganda rinonzwa richidziya zvishoma kana kukwenya zvishoma, robva raenda chiveve sezvo pH 13 hydroxide ions ichiparadza magumo epidermal nerve endings. Kana mushandi akaigeza mukati memaminitsi gumi nemashanu, hutsvuku hushoma chete hunoitika. Kana vakaisiya kwemaawa maviri kusvika matanhatu, kunyungudika kwakazara kuri kuitika.
** Maawa 4 kusvika 12 (Iyo "Purple Bruise" Misdiagnosis Trap)**:
Kana mushandi wacho achidhonza jeans yavo yakaoma, konkrete-crusted kana masokisi pa6: 00 PM, ganda riri pamusoro pemabvi avo kana zvitsitsinho zvinowanzotarisa ** rima repepuru, violaceous, dusky blue, kana brownish-black *, dzimwe nguva rakakomberedzwa nemhete yakatsvuka kana blister isina kudzika, kana chigamba che ** yakafa-chena, chena, ganda.
Varwere vakawanda vanofunga kuti: “Ndakangopwanya mabvi angu nokupfugama pakongiri yakaomarara zuva rose,” uye ndinoenda kunorara pashure pokuzora mafuta okuzora kana kuti chizoro chinorwisa mabhakitiriya.
Chaizvoizvo, chigamba chiya chepepuru chakasviba kana kuti chichena chinorovera tsinga dzeropa pasi peganda rakafa zvachose, saponified full-thickness dermis. Nemhaka yokuti solid calcium hydroxide inoramba yakavharirwa mukati memvere dzebvudzi uye liquefied dermis, kutsva kwekemikari kunoramba kuchidya zvakadzika mumafuta ari pasi peganda usiku hwose murwere akarara.
** Maawa 12 kusvika 48 (Kumuka NeKurwadza Kwakadzika Kwakadzika uye Eschar Ulceration)**:
Husiku kana mangwanani anotevera, sezvo kutsva kwealkali kunosvika kusimba kunorwadza kwakadzika fiber mu subcutaneous tissue uye periosteum, murwere anomuka ne ** zvakanyanya, kupisa, kuputika kwemarwadzo **, kuzvimba, uye kuchema necrotic maronda akavharwa ne grey-black kana yellow-white soapy eschar.
Nei Early Burn Center Referral Matters: Nekuti mapfekero ekuchengetedza anochinja pakutsva kwekongiri yakadzika anotora mavhiki 6 kusvika 12** kuti abvise mavanga ealkaline akafa uye kusiya mavanga e-hypertrophic emabvi nemajoini anoremadza, nzvimbo dzakatsva dzinoita kuvhiya kwekutanga kwekukurumidza uye kupatsanurwa kupora kweganda, kuita basa rekubatanidza.

Deep Dive 2: Lime uye Cement Eye Splashes (The Double Eyelid Eversion & Limbal Stem Cell Rescue)¶

Mune ophthalmology, ** kupfapfaidza kwemaziso kwe lime (calcium oxide kana calcium hydroxide), dhaka rakanyorova, plaster, kana kongiri inoonekwa seimwe yenjodzi dzinotyisa mumishonga yese **, yakaipisisa kupfuura kupfava kwebhatiri acid.

1. Sei Lime Inonyungudutsa Cornea uye Inokonzera Upofu Husingaperi ("Porcelain White Ziso").¶

15-Kupinda Kwechipiri: Nepo asidhi ichimwaya mapuroteni epamusoro pacorneal epithelium uye ichinonoka kupinda kwayo, alkaline hydroxide ions ($\text{OH}^-$) inonatsa maseru ecorneal epithelium mu sekondi, inonyungudutsa glycanne glycorosi uye strososa yakatwasuka glycanneti ye glycosy. mu ** anterior chamber yeziso mukati me15 kusvika ku60 seconds **, kuparadza lens (kukonzera kukurumidza kukurumidza) uye trabecular meshwork (inokonzera yakaoma ** yechipiri alkali glaucoma **).
** Limbal Stem Cell Ischaemia (Iyo "Ziso Rakachena" Musungo)**: Zvinoshamisa kuti, ziso rakatsva neraimu uko chikamu chichena cheziso (sclera uye conjunctiva chakatenderedza cornea) chinotaridzika ** marble-chena uye isina ropa ** iri ** iri munjodzi huru kwazvo yehupofu husingagumi ** kupfuura ziso rinotaridzika rakatsvuka uye rakatsvuka ropa:
Ziso dzvuku rakajeka richine tsinga mhenyu dzeropa dzinonhuwirira ** corneal limbus ** (iyo 1-to-2-millimeter mhete yakatenderedza kumucheto kwecornea uko ese **limbal epithelial stem masero ** anorarama).
A blanched, porcelain-white sclera/limbus zvinoreva kuti pH 13 alkali yanyatsogwamba nekuparadza tsinga dzeropa dziri kudya limbal stem cells (limbal ischemia). Pasina limbal stem masero uye kupihwa kweropa, iyo cornea inonyungudika kuburikidza ne collagenase enzymes (** sterile corneal ulceration uye perforation ), kana inova isina opaque uye mavanga ( Roper-Hall / Dua Giredhi IV ocular burn **).

2. Nhanho-ne-Nhanho Munda uye Chipatara Eye Rescue Protocol¶

Kudiridza Kunoramba Kuchiripo (Tanga Pachiitiko Mukati Masekondi gumi):
Usarasikirwa nemaminetsi makumi maviri uchityaira uchienda kukiriniki yekukurumidzira ine lime ichiri yakagara muziso. Shandisa nzvimbo iri pedyo yemvura yakachena nekukasika: nzvimbo yekugezesa maziso, Diphoterine canister, mvura yemubhodhoro, poipi yebindu painomanikidzwa yakaderera, sink yekupfapfaidza yekicheni, kana shawa.
Bata ziso nepakati nechigunwe chako chechigunwe nechigunwe (kudzvanya pabhonzo orbital rim, * never* kudzvanya mboni yeziso pachayo kana paine kukuvara kunopinda mukati kuchifungirwawo) uye puruzira kubva pakona yemhino nekunze uchienderera mberi kwe30 kusvika maminitsi makumi matanhatu.
**Maitiro Ekuita Yekumusoro Eyelid Eversion Kubvisa Yakasungwa Solid Lime Particles **:
**Nei kugezesa kwemvura kusingaite kana ukasvetuka danho iri **: Lime plaster, dhaka, uye simende zvinongonyungudika zvishoma mumvura **. Zvimedu zvichena zvakaonda zve calcium hydroxide zvinosvinwa kumusoro mu superior conjunctival fornix (yakadzika cul-de-sac homwe iri kumusoro pasi peziso repamusoro) apo nyakubatwa anosvina zviziso zvake kuvhara nekurwadziwa. Kunyangwe ukamhanyisa marita mashanu esaline kumberi kwemboni yeziso, idzo dzakavharirwa matombo machena e lime pasi pechivharo chepamusoro anoita se inononoka kuburitsa pH 13 alkali depot, ichiramba ichidonhedza hydroxide ions pacornea kwemaawa.
Nhanho-ne-Nhanho Eyelid Kutsvaira Technique:
1. Dhonza eyelid rezasi pasi uchikumbira munhu wacho kuti atarise kumusoro, uye shandisa yakanyoroveswa donje-tipped applicator (Q-tip) kana kona yeyakanyorova sterile gauze pad kutsvaira zvinyoro nyoro chero grit chena kana grey simende kubva muhomwe yezasi yevhavha.
2. Bvunza akabatwa kuti atarise pasi kutsoka dzake (inodzoreredza tsandanyama yelevator yevhavha yepamusoro).
3. Bata maeyelashe epamusoro zvinyoro nyoro pakati pechigunwe chako chechigunwe nechigunwe, dhonza ziso rekumusoro zvishoma kumberi uye pasi, isa shaft yedonje swab yakachinjika nepakati pepakati peziso repamusoro (**inenge 1 centimita / 0.4 inches pamusoro pemutsara welash **, kumucheto kwepamusoro kweplate kumusoro kweyepamusoro peziso), peta kumusoro kweziso shaft kunge kupuruzira cuff mukati kunze **.
4. Bata chivharo chepamusoro pahuma nemunwe mumwe uchishandisa chechipiri yakanyorova donje swab kupukuta zvinyoro nyoro pese chena ruva reraimu kana simende rakanamira papink inner tarsal conjunctiva.
5. Mudhipatimendi rekukurumidzira, vanachiremba vanoisa madonhwe eziso reanesthetic (** proparacaine kana tetracaine **), isa ** Desmarres lid retractor ** kuita ** double eversion ** yakadzika mukati mepamusoro fornix, kudiridza ne **Morgan Lens ** yakanamirwa ku ** 2 kusvika ku3 Litres yeLactated Ringertox * ED * SOULS SOULS * * ED * SOULS SOULS * * * SO SOUL MEDICATE OF LACTED RINGERTO * ED ( Normal Saline to ED * ED) chelate calcified lime plaques), wotarisa firimu rekubvarura nebepa re litmus maminetsi makumi matatu mushure mekumisa kudiridza kusvika pH yaramba isina kwayakarerekera pa $\text{pH} 7.0\text{ kusvika }7.4$.

Chengetedzo Yekudzivirira: Kushanda Zvakachengeteka neConcrete, Mota, uye Lime¶

Pfeka Mabhutsu Erabha Asingapindi Mvura Nemakumbo Akadhonzwa Pamusoro peBoot Tops (Haana kumboturikwa Mukati): Kupfekedza bhurugwa rebasa mukati mebhutsu yako kunogadzira fanini inotungamira kupfava kwese kwekongiri yakanyorova yakananga pasi pamakumbo ako nemasokisi. Dhonza tirauzi isingapinde mvura pamusoro kunze kwebhutsu dzerabha dzepamusoro uye tepi cuff kana ichinyura mumvura yakadzika.
Usafe Wakapfugama PaWat Concrete Pasina Mvura Yakavharwa-Sero Rerubha Kneepads kana Kneeling Board: Furowo zvaro kana mabvi emabvi emachira anonyudzwa nepH 13 simende mvura mumaminitsi; nguva dzose shandisa mabvi asina porous mvura erabha pamusoro petirauzi isingapinde mvura.
** Pfeka Tight-Fitting Alkali-Resistant Nitrile kana Neoprene Gauntlet Gloves (Never Cotton or Leather Work Gloves)**: Magurovhosi edonje nematehwe anonzva mvura yesamende yealkaline woibata pamakumbo ako zuva rose. Chengeta mukati megirovhosi yako yakaoma zvachose, uye usambobvisa girovhosi neminwe yakavharwa nesimende.
Chengeta Bhakiti reMvura Yakachena Yekusuka, Bhodhoro reMhuri White Vinegar, uye Seled Safety Goggles Pedyo neMusanganisi Wese: Kugeza mvura yekongiri yakanyorova kubva pamaoko ako kana mashini mukati me masekonzi makumi matanhatu inoteverwa nekapfupi dilute vhiniga uye kugeza mvura yakachena kunodzivirira 100 muzana yekutsva kwekongiri.
Ban Dry Quicklime ($\text{CaO}$) kana Hydrated Lime ($\text{Ca(OH)}_2$) kubva kuSports Field Line Marking: Usambofa washandisa chirimu chekurima kana kuti hydrated masonry lime kumitsetse yechoko munhandare dzenhabvu, nhabvu, kana baseball; apo vatambi vanotsvedza mumutsara pazuva rekunaya kwemvura kana dikita, vanotambura nekupisa kwe corneal lime uye kukora-kupisa zvidya / chidya. Shandisa chete non-caustic ground calcium carbonate ($\text{CaCO}_3$ / pulverized limestone choko, $\text{pH } } 8\text{ kusvika }9$) kana pendi yemumhare.

Mibvunzo inowanzo bvunzwa¶

Ndadira patio yekongiri nhasi ndakapfugama paslab mujean rangu. Pandakabvisa bhurugwa rangu manheru ano, ganda repamusoro pemabvi angu epepuru rakasviba repepuru-dema uye rakaita chiveve, riine mablister mashoma kumucheto. Ndakangopwanya mabvi here, kana kuti uku kutsva kwemakemikari?¶

Iro HAKUSI kukuvadzwa: wakatambura nekudzika, kuzara-kukora (yechitatu-dhigirii) alkaline kemikari kutsva kubva kunyorova yePortland simende (ine pH ye12.5 kusvika 14.0, yakasimba seyemvura inochenesa), uye unofanirwa kuenda kuchipatara dhipatimendi rekukurumidzira kana nzvimbo yekupisa manheru ano. Nekuti calcium hydroxide inonyungudutsa mafuta eganda kuburikidza ne liquefactive necrosis uye inodzika tsinga dzepamusoro pekutanga, kupisa kwekongiri yekupfugama kunozivikanwa kusarwadza mukati mezuva uye kushanduka kusviba yepepuru, yebhuruu-dema, kana waxy-chena manheru sezvo tsinga dzeropa dziri pasi dzinogwamba. Geza mabvi ose pasi pemvura inotonhorera inoyerera kwemaminetsi makumi matatu izvozvi, vhara zvisina tsarukano nejira rakachena rakaoma (usazora mafuta ane girizi), uye enda kuchipatara kunopisa rubatsiro rwenyanzvi.

Sei zvisina njodzi kushandisa vhiniga yemumba ine dilute yekugezesa paganda rakaiswa simende yakanyorova (mushure mekugeza nemvura), apo vanotungamira rubatsiro rwekutanga vanoti USAFANISE kuisa vhiniga pane yemvura drain-cleaner (lye) inopisa?¶

Kana mumwe munhu adurura mvura yakanyanyisa sodium hydroxide lye paganda ravo, kudira vhiniga yakananga kukemikari yakanyungudutswa kunokonzeresa nekukurumidza exothermic (inopisa-inogadzira) acid-base reaction iyo inopisa ronda nyoro. Uine simende yePortland yakanyorova paganda rakasimba kana kuti rakashatirwa, zvisinei, unoTANGA wageza simende yese yakawanda pasi pemvura inoyerera yakakwira kwemaminetsi gumi nemashanu kusvika makumi maviri. Kunyangwe mushure mekunyatsogezwa kwemvura, microscopic calcium hydroxide ions inoramba yakasungirirwa kune keratin mapuroteni mukati mekunze kweganda pores (kuchengeta ganda pH pamusoro pe11 kusvika 12 uye zvichikonzera slimy kunzwa). Kugeza muchidimbu ganda rakagezwa nevhiniga yakachena yemumba (5% acetic acid yakanyungudutswa 50:50 nemvura) inodzivirira zvakasara izvo zvakasara zvealkaline kudzokera kune zvakajairika ganda pH (5.5 kusvika 7.0) pasina kuunza kupisa, uye zvino inoteverwa nemvura yekupedzisira yekugeza. Usamboisa vhiniga mumaziso kana pamaronda akazaruka akazaruka.

Ko sei chiremba wemaziso airamba achipukuta ziso remurume wangu kweawa imwe chete kuchipatara nyangwe isu tainge tatosuka 15minutes takatozorasa lime plaster?¶

Solid particles of lime (calcium oxide kana calcium hydroxide), plaster, uye dhaka hazvinyanyi kunyungudika mumvura uye zvinogara mukati mukati mehomwe dzakapetwa dziri pasi pemaziso ekumusoro neezasi ( conjunctival fornices). Kunyangwe mushure memaminitsi gumi nemashanu ekusukwa kwepamusoro kumba, zvimedu zvichena zvichena zveraimu zvakavharirwa pasi peziso repamusoro zvinoramba zvichinyunguduka zvishoma nezvishoma mufirimu remisodzi, zvichiita kuti pH yeziso idzokere kusvika pakupofomadza 12.5 kana 13.0 paunongomira kudira mvura. Muchipatara, vanachiremba vanoita chiveve ziso, vachitenderedza ziso (double-evert) ziso repamusoro pamusoro peretractor kuti vabvise kapi kanenge karimo kakaoma, uye kudiridza nguva dzose ne2 kusvika ku3 litres esaline kusvika litmus pH strip yakaiswa muziso 30 maminetsi mushure mekumisa kudiridza.

*Gwaro iri nderezvinangwa zveruzivo uye haritsivi kuongororwa kwehunyanzvi hwekurapa, kuchengetedza maziso echimbichimbi, kana kudzidziswa kwemaoko. Tinokurudzira zvikuru kutora kosi yerubatsiro rwekutanga yebasa yakatenderwa kuburikidza neInternational Federation yeRed Cross neRed Crescent Societies (IFRC), nzanga yako yenyika yeRed Cross, St John Ambulance, kana mupi wekuchengetedza basa akasimbiswa.

Kwatariswa¶

Occupational Safety and Health Administration (OSHA, United States): Kudzivirira Zvinetso zveGanda kubva pakushanda nePortland Cement (OSHA Guidance Document & Pocket Guide).
National Institute for Occupational Safety and Health (NIOSH, United States) & Centers for Disease Control and Prevention (CDC): *NIOSH Pocket Guide kune Chemical Hazards: Portland Cement, Calcium Oxide (Quicklime), uye Calcium Hydroxide (Hydrated Lime) *.
American Burn Association (ABA): Advanced Burn Life Support (ABLS) Provider Manual: Management yeAlkali, Cement, uye Ocular Chemical Burns.
Health and Safety Executive (HSE, United Kingdom): Ruzivo Rwokuvaka CIS26: Simende (Alkali Burns uye Hexavalent Chromium Dermatitis Prevention).
Royal College yeOphthalmologists & American Academy yeOphthalmology (AAO): *Emergency Management yeAcute Ocular Chemical (Alkali uye Lime) Kukuvara *.

Material & Common Use	Active Chemical & Wet pH	Primary Clinical Injury Pattern	Yakananga Yekutanga Rubatsiro & Decontamination Protocol
Wet Ready-Mix Concrete, Screed, & Masonry Mortar (Madhiraivha, mapatio, nheyo, zvidhinha, tile thinset/grout)	Calcium Hydroxide (\(\text{Ca(OH)}_2\)) + \(\text{NaOH}/\mavara{KOH}\). Kunyorova pH: `12.5 to 13.8`.	Kunyarara Kwakadzika Kwakazara-Kukura "Kupfugama Kupisa" uye "Boot-Top Burns" : Kusina kurwadziwa kwe2 kusvika maawa 6; inopa husiku ihwohwo neganda repepuru-blue, grey, kana jena chena pamusoro pematellae, shins, kana zvitsitsinho.	Bvisa bhurugwa/bhutsu dzakanyorova pakarepo; geza nemvura inotonhorera inoyerera kwe 30 kusvika 60 min ; pfupi dilute 5% yemumba vhiniga sukurudza paganda mushure mekutanga kushambidzwa kwemvura, kuteverwa nekuyerera kwemvura; kupisa nzvimbo yekuongorora yekuvhiya kubviswa / kubatanidza .
Dry Quicklime / Unslaked Lime / Burnt Lime (\(\text{CaO}\)) (Kugadzikana kwevhu, kugadzirwa kweroadbed, kugadzirwa kwepH yekurima, kugadzira simbi/girazi, kutara mutsara wenhandare zvisiri pamutemo)	Yakachena Calcium Oxide (\(\text{CaO}\)). Inoita semvura/dikita kuita \(\text{Ca(OH)}_2\) (\(\text{pH } 12.8\)) + Extreme Exothermic Heat (\(> 100^\circ\text{C}\)).	Yakasanganiswa Exothermic Thermal + Liquefactive Alkali Burn : Ganda rekudikitira rakafukidzwa nequicklime rinotambura nekukasira kutsva kwemafuta + maronda akadzika caustic; inoparadza corneal melting kana yakafuridzirwa mumaziso.	1. Usambofa wakanyorova omesa quicklime paganda kutanga. Bvisa hembe uye kwesha upfu hwakaoma netauro/bhurashi rakaoma. 2. Wobva wafashukira nemvura yakawanda inoyerera kwemaminetsi makumi matatu kusvika makumi matanhatu kutakura kupisa nealkali. 3. Kupfapfaidza kweziso: Kudiridza nekukasika 60-min + double eyelid eversion kubvisa zvidimbu zve lime yakasimba.
Hydrated Lime / Slaked Lime (\(\text{Ca(OH)}_2\)), Limewash, Stucco, & Plaster yeParis Yakasanganiswa neLime (Kunamira, masonry enhoroondo, whitewash, kuchenesa mvura, pickling lime)	Calcium Hydroxide (\(\text{Ca(OH)}_2\)). Kunyorova pH: `12.4 to 12.8`.	Overhead Plasterer's Eye Splash: Madonhwe anodonha e lime plaster yakanyorova kana limewash anorova maziso emushandi anotarisisa kumusoro, achiisa zvimedu zvecalcium hydroxide zvakadzika mukati yepamusoro conjunctival fornix pasi peziso repamusoro peziso.	Pakarepo 30-kusvika-60-maminetsi ekudiridza ocular + inosungirwa epamusoro eyelid eversion pamusoro pedonje swab (uye Desmarres lid retractor tsvaira + EDTA chelation muchipatara) kuburitsa akaiswa calcified plaques.
Dry Bagged Portland Cement Dust (Kusanganisa kongiri nemaoko, kutsvaira nzvimbo dzekuvaka, kucheka yakaoma simende board)	Anhydrous Calcium Silicates + \(60\%\) Calcium Oxide (\(\text{CaO}\)) + tsvaga Hexavalent Chromium (\(\text{Cr}^{6+}\)).	1. Ganda Rinodikitira: Rinochinja kuita pH 13 simende yakanyorova mukati mebhutsu dzinodikitira, magirovhosi, uye makora ehembe. 2. Inhalation : Nosebleeds, caustic bronchitis, uye kwenguva refu silicosis (kubva kucrystalline silica). 3. Chronic Ganda: Fissured irritant & \(\text{Cr}^{6+}\) allergic contact dermatitis.	Geza guruva rakaoma paganda usati wageza nemvura inotonhorera uye pH-neutral sipo; pfeka N95 / FFP3 respirator uye magirazi akasimba-akakodzera paunenge uchisanganisa mabhegi akaoma.