Scorpion, centipede, ແລະ venomous arthropod stings ການປະຖົມພະຍາບານທາງດ້ານການຊ່ວຍ¶

ແມງກະເບື້ອທ້ອງຟ້າມີພິດສົ່ງສານເຄມີທີ່ມີພະລັງແຮງໂດຍການໃຊ້ອາວຸດອະວະກາດພິເສດ: ແມງງອດຕີບ້າທີ່ຕິດຢູ່ດ້ານຫຼັງຂອງມັນ, ແມງງອດຂະໜາດໃຫຍ່ຈັບຕົວຜູ້ເຄາະຮ້າຍຂອງມັນໂດຍໃຊ້ຂາໜ້າທີ່ຖືກດັດແປງເອີ້ນວ່າ forcipules, ແລະມົດໄຟທີ່ນຳເຂົ້າມາຍຶດເອົາຕົວມັນເອງດ້ວຍ mandibles ເພື່ອ pivotlk ແລະສີດທໍ່ຫຼອດລົມ. ໃນຂະນະທີ່ arthropod stings ສ່ວນໃຫຍ່ໃນຜູ້ໃຫຍ່ທີ່ມີສຸຂະພາບດີເຮັດໃຫ້ເຈັບປວດບາດແຜໃນທ້ອງຖິ່ນແລະອາການໃຄ່ບວມຊົ່ວຄາວ, ບາງແມງໄມ້ທີ່ເປັນພິດ neurotoxic ເຮັດໃຫ້ເກີດການສຸກເສີນທາງການແພດທັນທີ, ອັນຕະລາຍເຖິງຊີວິດສໍາລັບເດັກນ້ອຍ, ເດັກນ້ອຍ, ແລະຜູ້ສູງອາຍຸ, ໃນຂະນະທີ່ມົດໄຟແລະມົດ stings velvet ສາມາດເຮັດໃຫ້ເກີດອາການແພ້ທາງລະບົບຢ່າງໄວວາຫຼືການຕິດເຊື້ອຜິວຫນັງຂັ້ນສອງຮ້າຍແຮງ.

ຄວາມເຂົ້າໃຈກ່ຽວກັບຄວາມແຕກຕ່າງທາງດ້ານຄລີນິກລະຫວ່າງ pinch neurotoxic ທີ່ບໍ່ມີອັນຕະລາຍ, ຜິວເນື້ອສີຂາ cytolytic necrotic, ແລະພາຍຸ cholinergic pediatric escalating ຢ່າງໄວວາເຮັດໃຫ້ຜູ້ກູ້ໄພສາມາດສະຫນອງການບັນເທົາອາການເຈັບປວດໃນທັນທີ, ຫຼີກເວັ້ນການປິ່ນປົວອື່ນໆທີ່ເປັນອັນຕະລາຍ, ແລະໃຫ້ຄົນເຈັບທີ່ມີຄວາມສ່ຽງສູງຕໍ່ຢາຕ້ານພິດແລະການດູແລແບບສຸມກ່ອນທີ່ຈະພັດທະນາລະບົບຫາຍໃຈ.

ເຮັດອັນນີ້ດຽວນີ້¶

1. ** ຍ້າຍອອກໄປຈາກພື້ນທີ່ຮັງ ແລະ ຖູແຂ້ວແມງທີ່ຍັງເຫຼືອອອກຢ່າງປອດໄພ.** ໄລຍະຫ່າງຢ່າງໜ້ອຍ 5 ຫາ 10 ແມັດ (16 ຫາ 33 ຟຸດ) ຫ່າງຈາກບ່ອນມົດໄຟທີ່ຖືກລົບກວນ, ເຫງົ້າໄມ້, ຫຼື ຮອຍຫີນທະເລຊາຍ. ຖ້າມົດໄຟມາລອຍຢູ່ຕາມຜິວໜັງ ຫຼື ເຄື່ອງນຸ່ງ, ໃຫ້ຖູດ້ວຍມື ຫຼື ຜ້າເຊັດມືໃຫ້ສະອາດກ່ອນລ້າງດ້ວຍນ້ຳ, ເພາະວ່າມົດໄຟທີ່ປຽກຢູ່ນັ້ນເຮັດໃຫ້ມົດໄຟກັດໄດ້ຍາກ ແລະ ຖູຊ້ຳໆ.
2. ** ໂທຫາເບີສຸກເສີນໃນທ້ອງຖິ່ນຂອງທ່ານທັນທີສໍາລັບເດັກນ້ອຍທີ່ຖືກແມງງ່າງຫຼືຜູ້ທີ່ສະແດງອາການທາງລະບົບ.** ໂທ 911 ໃນສະຫະລັດແລະການາດາ, 112 ໃນທົ່ວສະຫະພາບເອີຣົບ, 999 ໃນສະຫະລາຊະອານາຈັກ, 000 ໃນອົດສະຕາລີ, ຫຼືປຶກສາລາຍຊື່ຂອງ ຕົວເລກສຸກເສີນ. ນອກຈາກນັ້ນ, ໂທຫາສູນຄວບຄຸມພິດພິດໃນພາກພື້ນຂອງທ່ານ (1-800-222-1222 ໃນສະຫະລັດ) ສໍາລັບການຊີ້ນໍາສະເພາະຂອງຊະນິດພັນແລະການປະສານງານຂອງຢາຕ້ານພິດຂອງໂຮງຫມໍ.
3. ** ຖອດແຫວນ, ໂມງ, ສາຍແຂນ ແລະ ເກີບທີ່ແໜ້ນໜາອອກຈາກແຂນຂາທີ່ຖືກກະທົບໂດຍທັນທີ.** ຮອຍຕີນກາກັດ, ເຫງົ້າເໝືອງ, ແລະຕອດຂອງມົດໄຟຫຼາຍອັນສາມາດເຮັດໃຫ້ເກີດການໃຄ່ບວມໄວ, ຕ່ອມນ້ຳເຫຼືອງ ແລະ ເສັ້ນເລືອດພາຍໃນ 15 ຫາ 30 ນາທີ. ການຖິ້ມແຫວນໂລຫະໃສ່ນິ້ວມືທີ່ມີອາການບວມສາມາດຈໍາກັດການໄຫຼວຽນຂອງເສັ້ນເລືອດແດງແລະເຮັດໃຫ້ເກີດ ischemia ດິຈິຕອນ.
4. ** ລ້າງ​ບ່ອນ​ກັດ​ຫຼື​ກັດ​ດ້ວຍ​ສະບູ​ອ່ອນໆ​ແລະ​ນ້ຳ​ເຢັນ.** ລ້າງ​ຮ່ອງ​ຮອຍ​ພິດ​ແລະ​ສິ່ງ​ເປື້ອນ​ເປິ​ທີ່​ຜິວ​ໜັງ​ອອກ​ໂດຍ​ບໍ່​ມີ​ການ​ຂັດ​ອອກ​ຢ່າງ​ແຮງ. ຖ້າມີແມງກະເບື້ອ ຫຼື ໜອນແມງກະເບື້ອ, ຈົ່ງຮັກສາຕຸ່ມໂພງໃຫ້ຢູ່ສະເໝີ ແລະ ຫ້າມບໍ່ໃຫ້ມັນແຕກ.
5. ເອົາຜ້າແພທີ່ຫໍ່ເຢັນປະໄວ້ 10 ຫາ 15 ນາທີຕໍ່ຄັ້ງ (ຫຼື ແຊ່ນ້ຳອຸ່ນເພື່ອຂ້າແມງກະເບື້ອ). ສຳລັບແມງງອດ ແລະ ມົດໄຟ, ຜ້າເຢັນຫໍ່ດ້ວຍຜ້າເຊັດໂຕທີ່ແຫ້ງແລ້ວຊ່ວຍຫຼຸດການອັກເສບ ແລະ ປວດປາຍເສັ້ນປະສາດ. ສໍາລັບ centipede ຍັກ (Scolopendra) envenomations, immersing ກັດໃນນ້ໍາອຸ່ນທີ່ທົນທານຕໍ່ທີ່ 40 ຫາ 43 ອົງສາເຊນຊຽດ (104 ຫາ 109 ອົງສາຟາເຣນຮາຍ) ສໍາລັບ 20 ຫາ 30 ນາທີຈະຊ່ວຍໃຫ້ສານພິດຂອງທາດໂປຼຕີນຈາກຄວາມຮ້ອນ denature ແລະບັນເທົາ vasospasm ທ້ອງຖິ່ນ excruciating.
6. ** ຮັກສາໃຫ້ຜູ້ເຄາະຮ້າຍສະຫງົບ, ສະຫງົບ, ແລະຕິດຕາມເສັ້ນທາງຫາຍໃຈຫຼືຄວາມເຈັບປວດທາງປະສາດ.** ພັກຜ່ອນປາຍ stung ຢູ່ໃນຕໍາແຫນ່ງທີ່ເປັນກາງທີ່ສະດວກສະບາຍຫຼືຕ່ໍາກວ່າລະດັບຫົວໃຈເລັກນ້ອຍສໍາລັບການ stings scorpion neurotoxic, ຫຼືສູງເລັກນ້ອຍສໍາລັບການໃຄ່ບວມທີ່ບໍ່ແມ່ນ neurotoxic. ຖ້າຄົນເຈັບມີຢາ epinephrine auto-injector ແລະເກີດອາການຄັນຄາຍ, ຄໍຄໍ, ຫາຍໃຈຫືດ, ຫຼືວິນຫົວ, ໃຫ້ສັກຢາ epinephrine ໃສ່ກາງຂານອກທັນທີ.

ເປັນໄມ້ຢືນຕົ້ນການຕັດສິນໃຈສຸກເສີນສໍາລັບ venomous arthropod stings¶

flowchart TD
    Start["Suspected Scorpion, Centipede, or Venomous Arthropod Sting"]
    Scene["Move to Safety and Remove Constricting Jewelry<br/>Wash gently with soap and water"]
    Anaphylaxis{"Signs of Systemic Anaphylaxis?<br/>(Wheezing, stridor, tongue swelling, hives, hypotension)"}
    Epi["Inject Epinephrine Auto-Injector into Outer Thigh<br/>Call Emergency Medical Services Immediately<br/>Position flat with legs elevated (or upright if short of breath)"]
    Species{"Identify Culprit Arthropod Class and Clinical Syndrome"}
    Scorpion["Scorpion Sting<br/>(Electric burning pain, tap test positive, minimal local swelling)"]
    Centipede["Giant Centipede Bite<br/>(Two paired puncture marks, intense localized burning, erythema, swelling)"]
    FireAnt["Fire Ant / Velvet Ant / Blister Beetle / Puss Caterpillar"]
    NeuroCheck{"Neurotoxic Red Flags or Pediatric Patient?<br/>(Child under 10, roving eyes, drooling, slurred speech, muscle spasms, tachycardia)"}
    ScorpionALS["Call EMS Immediately for Antivenom Transport<br/>1. Suction oral secretions and position on side if drooling<br/>2. Apply cool cloth compress (NO ice immersion, NO tourniquets)<br/>3. Monitor breathing for respiratory fatigue"]
    ScorpionMild["Mild Local Scorpion Pain in Adult<br/>1. Apply wrapped cool pack 10 minutes on / 10 minutes off<br/>2. Call Poison Control and monitor for 4 to 6 hours<br/>3. Verify tetanus immunization status"]
    CentipedeCare["Centipede First Aid Protocol<br/>1. Clean paired puncture wounds thoroughly<br/>2. Test warm water (40 to 43C / 104 to 109F) or cool pack for pain relief<br/>3. Monitor for chest pain, lymphangitis, or secondary cellulitis"]
    OtherCare["Fire Ant / Caterpillar / Beetle Care<br/>1. Tape-strip venomous caterpillar spines immediately<br/>2. Keep fire ant pustules and cantharidin blisters intact<br/>3. Apply cool compresses and watch for allergic reaction"]

    Start --> Scene
    Scene --> Anaphylaxis
    Anaphylaxis -->|Yes| Epi
    Anaphylaxis -->|No| Species
    Species -->|Scorpion| Scorpion
    Species -->|Centipede| Centipede
    Species -->|Ant / Caterpillar / Beetle| FireAnt
    Scorpion --> NeuroCheck
    NeuroCheck -->|Yes: High Risk or Systemic Signs| ScorpionALS
    NeuroCheck -->|No: Isolated Local Pain Only| ScorpionMild
    Centipede --> CentipedeCare
    FireAnt --> OtherCare

ການປຽບທຽບ arthropods ເທິງບົກທີ່ມີພິດທີ່ສໍາຄັນ¶

ການຮັບຮູ້ arthropod culprit ໂດຍຮູບແບບການໂຈມຕີທາງກາຍະສາດແລະການນໍາສະເຫນີທາງດ້ານການຊ່ວຍໃນທັນທີຊ່ວຍໃຫ້ຜູ້ຕອບທໍາອິດຄາດຄະເນວ່າໄພຂົ່ມຂູ່ແມ່ນເປັນພິດຕໍ່ລະບົບ, ການອັກເສບຂອງເນື້ອເຍື່ອຮ້າຍແຮງ, ຫຼືອາການແພ້ອາການແພ້.

Scorpion envenomation: pathophysiology ແລະການຈັດອັນດັບທາງດ້ານການຊ່ວຍ¶

ໃນຈຳນວນປະມານ 2,500 ຊະນິດ scorpion ທົ່ວໂລກ, ມີໜ້ອຍກວ່າ 50 ໂຕຢູ່ໃນຄອບຄົວທີ່ເປັນອັນຕະລາຍທາງການແພດ Buthidae ສາມາດເຮັດໃຫ້ເກີດອັນຕະລາຍເຖິງຊີວິດ ຫຼືເປັນອັນຕະລາຍເຖິງຊີວິດຂອງມະນຸດໄດ້. ຢ່າງໃດກໍຕາມ, ໃນເຂດແຫ້ງແລ້ງ, ເຂດຮ້ອນ, ແລະເຂດຮ້ອນໃນທົ່ວອາເມລິກາເຫນືອແລະໃຕ້, ອາຟຣິກາເຫນືອ, ຕາເວັນອອກກາງ, ແລະອິນເດຍ, stings scorpion ກວມເອົາຫຼາຍກ່ວາ 1.2 ລ້ານ stings ແລະຫຼາຍກ່ວາ 3,000 ການເສຍຊີວິດຕໍ່ປີ, ສ່ວນຫຼາຍແມ່ນເດັກນ້ອຍອາຍຸຕ່ໍາກວ່າ 10 ປີ.

ກົດລະບຽບທາງສະລີລະວິທະຍາຂອງຫົວໂປ້ມືປະຕິບັດໄດ້: pincers ທຽບກັບຫາງ¶

ໃນຂະນະທີ່ນັກຍ່າງປ່າແລະເຈົ້າຂອງເຮືອນບໍ່ຄວນພະຍາຍາມຈັບແມງງອດທີ່ມີຊີວິດຢູ່ເພື່ອກວດກາເບິ່ງມັນຢ່າງໃກ້ຊິດ, ນັກຊີວະວິທະຍາພາກສະຫນາມແລະນັກຊ່ຽວຊານດ້ານສານພິດສຸກເສີນໄດ້ສັງເກດເຫັນການປ່ຽນແປງທາງວິວັດທະນາການທີ່ຫນ້າເຊື່ອຖືໃນວິພາກວິພາກຂອງແມງງອດ:

• ** ປາຍປາກກາອ່ອນ ແລະ ຫາງໜາ, ມີພະລັງ:** ແມງງອດທີ່ມີລັກສະນະບາງໆ, ອ່ອນນຸ້ມ, ຄ້າຍຄືຕີນບິດ (pincers) ບວກໃສ່ກັບ metasoma (ຫາງ) ໜັກ, ກ້າມເນື້ອແມ່ນອີງໃສ່ສານ neurotoxins ທີ່ມີສັກຍະພາບຕົ້ນຕໍເພື່ອ immobilize ຜູ້ຖືກລ້າໃນທັນທີ. ເກືອບທຸກແມງງອດ Buthid ທີ່ຕາຍແລ້ວ, ລວມທັງຕົວຕາຍ (Leiurus), ແມງຫາງໄຂມັນ (Androctonus), ແລະແມງງອດເປືອກ (Centruroides), ແບ່ງປັນໂປຣໄຟລ໌ຂອງຮອຍທພບນີ້.
• ** ງ່າງໃຫຍ່, ຄ້າຍຄືກຸ້ງກ້າມ ແລະຫາງບາງໆ:** ແມງງອດທີ່ປະກອບດ້ວຍກ້ານໃບໜາ, ເປັນກະປ໋ອງ, ກັດຕີນ (ເຊັ່ນ: ແມງງອດຈັກກະພັດ Pandinus imperator ຫຼື ແມງງອດທະເລຊາຍຂະໜາດໃຫຍ່ * Hadrurus arizonensis*) overpowered prey ໂດຍມີລະບົບກົນຈັກທີ່ອ່ອນເພຍ ແລະມີລະບົບການບີບອັດທີ່ອ່ອນເພຍ. ພະຍາດຂອງມະນຸດ.

ວິທີການເປືອກ scorpion ແລະ Buthid neurotoxins ໂຈມຕີລະບົບປະສາດ¶

Venoms ທີ່ຜະລິດໂດຍ Centruroides, Tityus, Leiurus, ແລະ Hottentotta ມີໂພລີເປບທີນ neurotoxic ທີ່ມີນ້ຳໜັກໂມເລກຸນຕ່ຳທີ່ຜູກມັດສະເພາະກັບຊ່ອງໂຊດຽມທີ່ມີແຮງດັນ (\(\text{Na}^+\)) ຢູ່ໃນເຍື່ອ axonal ຂອງທັງສອງເສັ້ນປະສາດ somatic peripheral ແລະລະບົບ nervous autonomic.

1. Alpha-toxins ຍືດໄລຍະການກະຕຸ້ນຂອງຊ່ອງໂຊດຽມ, ປ້ອງກັນເຍື່ອປະສາດຈາກການເຜົາຜານ ແລະຖື neuron ຢູ່ໃນສະພາບຂອງການໄຫຼວຽນຂອງກະແສໄຟຟ້າຢ່າງຕໍ່ເນື່ອງ.
2. Beta-toxins ປ່ຽນຂອບເຂດການກະຕຸ້ນແຮງດັນເພື່ອໃຫ້ເສັ້ນປະສາດຂອງ sensory ແລະ motor ດັບໄຟ spontaneously ຢູ່ໃນທ່າແຮງການພັກຜ່ອນປົກກະຕິ.
3. ໂປຕັສຊຽມ (\(\text{K}^+\)) ຕົວບລັອກຊ່ອງ ສືບຕໍ່ຊັກຊ້າການຟື້ນຕົວຂອງລະບົບປະສາດ, ຂະຫຍາຍການຍິງຊ້ຳໆຂອງເສັ້ນປະສາດທີ່ກະຕຸ້ນທຸກຄັ້ງ.

ການ depolarization neuronal ທີ່ບໍ່ຢຸດຢັ້ງນີ້ເຮັດໃຫ້ເກີດສອງວິກິດການຊ້ອນກັນຂຶ້ນຢູ່ກັບຊະນິດທາງພູມສາດ:

• North American Bark Scorpion Syndrome (Centruroides sculpturatus / C. exilicauda, plus Mexican C. limpidus and C. noxius): ຕົ້ນຕໍແມ່ນເຮັດໃຫ້ເກີດຄວາມວຸ່ນວາຍ ພາຍຸເສັ້ນປະສາດຂອງເສັ້ນປະສາດສະໝອງ ແລະກະເພາະປັດສະວະ ບວກກັບ parasympathetic (cholinergic) ເກີນ. ຜູ້ຖືກເຄາະຮ້າຍມີອາການກະທົບກະເທືອນຈາກກະແສໄຟຟ້າທັນທີ, ມີອາການງຶດງໍ້ ແລະ ແສບຕາມແຂນຂາ ແລະ ຮອບປາກ, ກ້າມເນື້ອບໍ່ສະໜິດສະໜົມ, ການເຄື່ອນໄຫວທີ່ມີອາການຊັກແບບທຳມະຊາດທີ່ເຮັດຕາມການຊັກໃນຂະນະທີ່ຄົນເຈັບຍັງຕື່ນຢູ່, ສູນເສຍການປະສານງານຂອງກ້າມຊີ້ນ pharyngeal, ນ້ຳລາຍໄຫຼອອກມາຢ່າງບໍ່ຢຸດຢັ້ງ, ສາຍຕາທີ່ມົວ ຫຼື ມົວໆ** (rotary nystagmus ຫຼື opsoclonus).
• ** ໂລກເກົ່າ ແລະພາຍຸຫົວໃຈໃນອາເມລິກາໃຕ້ (Leiurus, Androctonus, Parabuthus, Hottentotta, and Tityus serrulatus):* ໃນຂະນະທີ່ພິດເຫຼົ່ານີ້ຍັງເຮັດໃຫ້ເກີດການກະຕຸ້ນລະບົບປະສາດຢ່າງຮ້າຍແຮງ, ພວກມັນເຮັດໃຫ້ເກີດການກະຕຸ້ນເບື້ອງຕົ້ນຂອງ **parasympathia, acetdycemia. hypotension, bronchospasm, ເຫື່ອອອກ profuse, ຮາກ, ແລະ priapism ໃນຜູ້ຊາຍໄວຫນຸ່ມ) ຕິດຕາມມາຢ່າງໄວວາດ້ວຍນ້ໍາຖ້ວມ ** sympathetic catecholamine ຂະຫນາດໃຫຍ່, ຍາວ ** (epinephrine ແລະ norepinephrine). ພາຍຸ catecholamine ນີ້ເຮັດໃຫ້ເກີດຄວາມດັນເລືອດສູງ, supraventricular ຫຼື ventricular tachycardia, myocarditis ທີ່ເປັນພິດ, ຄວາມລົ້ມເຫຼວຂອງ ventricular ຊ້າຍສ້ວຍແຫຼມ, ແລະອັນຕະລາຍເຖິງຊີວິດ ** neurogenic pulmonary edema **, ບ່ອນທີ່ມີນ້ໍາ frothy ສີບົວເຂົ້າໄປໃນປອດ. ຊະນິດ Tityus ໃນ Brazil ແລະ Trinidad (ໂດຍສະເພາະ Tityus trinitatis) ຍັງມີຊື່ສຽງໂດ່ງດັງຍ້ອນເຮັດໃຫ້ເກີດພະຍາດຕັບອັກເສບສ້ວຍແຫຼມ.

ທາງດ້ານການຊ່ວຍ "Tap Test" ສໍາລັບ Centruroides stings scorpion ເປືອກ¶

ບໍ່ເຫມືອນກັບເຫງົ້າຂອງເຜິ້ງ, ເຫງົ້າ, ຫຼືແມງມຸມກັດ, ເປັນເຫງົ້າຈາກເປືອກຂອງ Arizona scorpion (Centruroides sculpturatus) ໃບ ** ເກືອບບໍ່ມີຮອຍທີ່ສັງເກດເຫັນຢູ່ໃນຜິວຫນັງ **. ໂດຍທົ່ວໄປແລ້ວບໍ່ມີເສັ້ນດ້າຍສີແດງ, ບໍ່ມີບ່ອນຟອກ, ແລະບໍ່ມີອາການໃຄ່ບວມ, ເຮັດໃຫ້ມັນເປັນເລື່ອງຍາກພິເສດທີ່ຈະຊອກຫາສະຖານທີ່ທີ່ເປັນຕອດຢູ່ໃນເດັກນ້ອຍທີ່ຮ້ອງໄຫ້ ຫຼືເດັກນ້ອຍທີ່ເວົ້າບໍ່ໄດ້.

ແພດສຸກເສີນໃຊ້ Tap Test ເພື່ອຢືນຢັນການເປັນພິດຂອງລະບົບປະສາດ Centruroides: ຄ່ອຍໆແຕະຈຸດທີ່ຖືກສົງໄສດ້ວຍປາຍນິ້ວດຽວຈະເຮັດໃຫ້ເກີດປະຕິກິລິຍາການຖອນການຊ໊ອກໄຟຟ້າໃນທັນທີ, ຮຸນແຮງ ແລະຍິງ paresthesia ອອກຈາກອັດຕາສ່ວນການສໍາຜັດກັບແສງສະຫວ່າງ. ເນື່ອງຈາກວ່າ hyperesthesia ກົນຈັກຮ້າຍແຮງນີ້, ການກວດສອບເດັກຈາກຫົວເຖິງຕີນໂດຍການແຕະເບົາໆມື, ຕີນ, ແຂນ, ແລະຂາມັກຈະສາມາດຊີ້ໃຫ້ເຫັນສະຖານທີ່ sting ທີ່ແນ່ນອນເບິ່ງບໍ່ເຫັນ.

ການໃຫ້ຄະແນນທາງດ້ານຄລີນິກຂອງ scorpion envenomation (ຊັ້ນ I ເຖິງ IV)¶

ແພດສຸກເສີນແລະສູນຄວບຄຸມສານພິດໄດ້ຈັດປະເພດໂຣກ scorpion neurotoxic ເປັນສີ່ຊັ້ນຮຽນທາງດ້ານການຊ່ວຍເພື່ອກໍານົດວ່າໃຜສາມາດຈັດການກັບອາການປວດລ້າວແລະການສັງເກດການທຽບກັບຜູ້ທີ່ຕ້ອງການຢາຕ້ານພິດ scorpion intravenom:

Step-by-step first aid for a scorpion sting¶

1. Verify scene safety and check for Grade III/IV neurotoxic signs: Move the patient away from the area and shake out bedding or shoes. If the victim is an infant or child under 10 years old, or an older adult with cardiopulmonary disease, call emergency medical services immediately. Watch for roving eye movements, excessive drooling, slurred speech, and involuntary limb thrashing.
2. Protect the airway if drooling or swallowing difficulty begins: Place a drooling or thrashing child in the lateral recovery position on their side so saliva drains freely out of the mouth rather than causing laryngospasm or aspiration, and pad surrounding surfaces.
3. Wash the sting site and remove constricting items: Gently wash the skin with soap and cool water, and remove all rings, watches, and shoes immediately.
4. Apply a cool compress, never an ice bath: Place a cool, damp cloth or an ice pack wrapped in a dry towel over the sting site for 10 to 15 minutes at a time. Never submerge a limb in ice water, and avoid tourniquets, incisions, or suction devices.

Giant centipede bites (Scolopendra): pathophysiology and thermal therapy¶

Centipedes (Class Chilopoda) are fast-moving, elongated predatory arthropods with one pair of legs per body segment. While small house centipedes (Scutigera coleoptrata) and garden stone centipedes have weak jaws that rarely pierce human skin, tropical and desert giant centipedes of the genus Scolopendra grow to lengths of 15 to 30 centimeters (6 to 12 inches) and deliver one of the most intensely painful bites in the animal kingdom. Notable species include the giant desert centipede (Scolopendra heros) of the American Southwest and Mexico, the Vietnamese or Pacific giant centipede (Scolopendra subspinipes) found across Asia, Hawaii, and Australia, and the Mediterranean banded centipede (Scolopendra cingulata).

Anatomical mechanism: forcipules and "track marks"¶

Technically, a centipede neither bites with true mouthparts nor stings with a tail. Instead, the appendages of its first body trunk segment are evolutionarily modified into a pair of massive, curved, hollow pincers called forcipules (or toxicognaths) positioned just underneath the head. When threatened or trapped inside clothing, the centipede drives both curved forcipules inward like a pair of caliper tongs, leaving a characteristic paired puncture wound spaced 3 to 10 millimeters (0.12 to 0.4 inches) apart, often accompanied by a double row of tiny pinpoint scratches along the limb where the animal's sharp walking legs gripped the skin.

Because bystanders often mistake these paired puncture marks for a venomous snakebite, inspecting the spacing and the surrounding skin is important: giant centipede punctures typically bleed slightly, turn bright red or dusky purple almost immediately, and develop rapid, firm localized swelling within minutes.

Biochemical action of centipede venom¶

Scolopendra venom is a biochemically dense defensive and predatory cocktail designed to paralyze insects, lizards, and small mammals within seconds:

• Biogenic amines and pain mediators: High concentrations of histamine, serotonin (5-hydroxytryptamine), and acetylcholine immediately trigger intense nociceptor depolarization and local vascular permeability.
• Ssm Spooky Toxin (SsTx): A recently characterized potent peptide toxin in Scolopendra subspinipes that blocks KCNQ (\(\text{K}_\text{v}7\)) voltage-gated potassium channels, triggering severe local and systemic arterial vasospasm, hypertension, coronary artery constriction, and respiratory distress.
• Cytolytic enzymes: Phospholipase \(\text{A}_2\), hyaluronidase, acid and alkaline phosphatases, and metalloproteases break down cell membranes and extracellular matrix, causing local bruising, blistering, lymphangitis, and occasional superficial skin necrosis at the puncture sites.

Step-by-step first aid for a giant centipede bite¶

1. Dislodge the centipede safely: Use a stick or forceps to flick an attached centipede off in one rapid motion rather than grabbing it with bare fingers.
2. Wash the paired punctures thoroughly: Irrigate the wound under clean tap water for several minutes and wash gently with mild soap to remove surface bacteria (Staphylococcus, Streptococcus, Pseudomonas, and Clostridium tetani).
3. Use targeted thermal therapy:
4. Warm water immersion (40 to 43 degrees Celsius / 104 to 109 degrees Fahrenheit): Immersing the bitten hand or foot in tolerable warm water tested at 40 to 43 degrees Celsius (104 to 109 degrees Fahrenheit) for 20 to 30 minutes helps denature heat-labile protein toxins and relieves local arterial vasospasm. Always test the water temperature first to avoid scalding.
5. Cool compress alternative: If warm water increases throbbing inflammation, or after the initial 20-minute warm soak is complete, apply a cloth-wrapped cool pack for 10 to 15 minutes at a time.
6. Elevate the limb slightly and monitor for complications: Prop the affected extremity at or slightly above heart level. Seek emergency medical care if the victim develops chest pain, throat tightness, dark brown urine, skin necrosis, or spreading red streaks (lymphangitis), and verify tetanus immunization status.

Fire ants, velvet ants, venomous caterpillars, and blister beetles¶

Beyond scorpions and centipedes, four specialized groups of terrestrial arthropods cause frequent emergency department visits for dermal injuries, severe pain, or systemic allergic shock.

1. Imported fire ants (Solenopsis invicta and Solenopsis richteri)¶

When a fire ant mound is disturbed, worker ants swarm up the victim's legs before stinging simultaneously. Each ant clamps the skin with its mandibles and pivots its abdomen in a circle, stinging 5 to 8 times in a rosette pattern. Unlike honeybee venom, 95 percent of fire ant venom consists of water-insoluble piperidine alkaloids (solenopsins) mixed with a 5 percent fraction of allergenic proteins. Within 6 to 24 hours, cytotoxic solenopsins kill local white blood cells, transforming each red wheal into a characteristic sterile white cloudy pseudopustule.

• First aid protocol for fire ant stings:
• Brush off ants dry before washing: Wetting live attached fire ants causes them to clamp tighter and continue stinging. Briskly slap and brush them off with a dry cloth or gloved hand first, then wash with soap and water and apply cool compresses.
• ຫ້າມບໍ່ໃຫ້ເປື່ອຍ ຫຼື ຮອຍຕຸ່ມສີຂາວ: ຕຸ່ມມົດມົດໄຟແມ່ນເປັນໝັນໄດ້ ຕາບໃດທີ່ຊັ້ນຫຼັງຄາຂອງຜິວໜັງຍັງຄົງຢູ່. ການຂູດ ຫຼື ຖູພວກມັນຈະແນະນຳເຊື້ອແບັກທີເຣັຍ Staphylococcus ແລະ Streptococcus ໂດຍກົງເຂົ້າໄປໃນເນື້ອເຍື່ອ necrotic, ເຊິ່ງກໍ່ໃຫ້ເກີດການອັກເສບຂອງແບັກທີເຣຍຮ້າຍແຮງ ຫຼື ຊຶມເຊື້ອ. ກວມເອົາຕຸ່ມຜື່ນທີ່ບໍ່ສະອາດດ້ວຍຜ້າພັນບາດທີ່ສະອາດຈົນກວ່າພວກມັນຈະແປລົງໃນໄລຍະ 7 ຫາ 10 ມື້.

2. Velvet ants (Family Mutillidae)¶

Despite their name, velvet ants are female wingless solitary wasps covered in bright scarlet, orange, or black fuzzy hair. Equipped with an unusually tough exoskeleton and a long, agile stinger, species like the Eastern velvet ant (Dasymutilla occidentalis, nicknamed the "cow killer") deliver an explosive sting rated near the top of the Schmidt Sting Pain Index. Fortunately, the venom lacks systemic neurotoxins or tissue-destroying enzymes. Wash the site with soap and water, apply a cloth-wrapped cool pack in 10-to-15-minute intervals, and watch for standard allergic reactions.

3. Venomous caterpillars (Lepidopterism / Erucism)¶

Venomous caterpillars are covered in hollow, brittle chitinous spines (setae) connected to basal poison glands. Brushing against the caterpillar snaps hundreds of microscopic venom-filled spines into the skin.

• High-risk species:
• Puss caterpillar (Megalopyge opercularis, or "asp"): Resembles a tuft of golden-brown or gray fur. Its hidden spines leave grid-like hemorrhagic red spots and trigger excruciating pain radiating into the armpit or groin lymph nodes, muscle cramps, and chest tightness.
• South American Giant Silkworm Caterpillar (Lonomia obliqua and Lonomia achelous): Communal tree-trunk caterpillars whose venom contains prothrombin activators and fibrinolytic enzymes. Contact causes lethal consumptive coagulopathy within hours to days, leading to bleeding gums, hematuria, and fatal intracranial hemorrhage requiring immediate hospital infusion of anti-lonomic serum (SALon).
• First aid protocol: Lift the caterpillar off with forceps, then perform immediate Adhesive Tape Stripping by pressing sticky cellophane or duct tape over the sting site and peeling it off repeatedly with fresh strips to extract embedded hollow spines. Wash gently with soap and water, apply cool packs, and seek emergency medical care for severe radiating pain or any South American Lonomia contact.

4. Blister beetles (Family Meloidae and Oedemeridae)¶

Blister beetles secrete cantharidin, a terpenoid vesicant, from their leg joints (reflex bleeding) when brushed or crushed against skin. Contact is painless initially, but within 2 to 24 hours, large fluid-filled blisters (bullae) erupt on the epidermis. Never slap a beetle on bare skin; flick it off gently, wash immediately with soap and water so cantharidin is not rubbed into the eyes, and keep blisters intact under a sterile dressing.

Harmful myths and dangerous actions to avoid¶

Well-meaning bystanders often apply traditional or snakebite-derived folk remedies to arthropod stings that drastically worsen tissue destruction or systemic toxicity:

Prevention in endemic areas¶

In desert, tropical, and subtropical regions where scorpions, giant centipedes, and fire ants thrive, simple daily habits prevent the vast majority of indoor and nocturnal envenomations:

• Shake out all footwear, clothing, and towels before use: Always turn boots and shoes upside down and bang the heels together before slipping your foot inside, and shake out bath towels or clothes left on the floor or camp cot.
• Pull beds and cribs away from walls and use glass jar leg traps: Scorpions climb rough stucco, brick, and drywall effortlessly, but they cannot climb clean, smooth glass. In endemic bark scorpion zones, move infant cribs at least 15 centimeters (6 inches) away from walls, make sure blankets do not drape onto the floor, and place the four crib legs inside smooth, wide-mouth glass mason jars.
• Inspect sleeping areas at night with an ultraviolet (UV) blacklight: Virtually all scorpions contain beta-carboline and 4-methyl-7-hydroxycoumarin compounds in the hyaline layer of their exoskeleton cuticle that fluoresce bright neon blue-green under a 365 to 395 nanometer UV blacklight flashlight, making them unmistakable in the dark.
• Wear closed-toe boots and leather gloves outdoors: Never walk barefoot across lawns in fire ant or velvet ant territory, and always wear thick leather gloves when moving firewood, turning over patio stones, or pruning dense foliage where puss caterpillars and centipedes hide.

First aid guidance helps you manage the critical initial minutes of an envenomation, but it cannot replace hands-on emergency training. Consider taking a certified first aid and CPR course through your national Red Cross or Red Crescent society, St John Ambulance, or a local wilderness medicine provider so you can practice airway positioning, epinephrine auto-injector use, and emergency assessment with an instructor.

ຄຳຖາມທີ່ມັກຖາມເລື້ອຍໆ¶

ກວດສອບແຫຼ່ງທີ່ມາ¶

• Centers for Disease Control and Prevention (CDC, United States) & National Institute for Occupational Safety and Health (NIOSH, United States): Venomous Insects and Scorpions: Clinical Guidance, Prevention, and First Aid Management.
• World Health Organization (WHO, International): Rabies and Envenomings: A Neglected Public Health Issue and Global Management Guidelines for Scorpion Stings.
• American Association of Poison Control Centers (AAPCC / America's Poison Centers, United States): Evidence-Based Consensus Guidelines for Out-of-Hospital Management of Bark Scorpion (Centruroides) Stings.
• Food and Drug Administration (FDA, United States): Prescribing Information and Clinical Trial Efficacy Data for Centruroides (Scorpion) Immune F(ab')2 (Equine) Intravenous Antivenom.
• Wilderness Medical Society (WMS, United States): Clinical Practice Guidelines for the Prevention and Treatment of Envenomations by Terrestrial Arthropods, Centipedes, Fire Ants, and Lepidoptera.
• Ministry of Health of Brazil (Ministerio da Saude, Brazil): Manual de Diagnostico e Tratamento de Acidentes por Animais Peconhentos: Escorpionismo (Tityus) e Erucismo por Lonomia.
• International Federation of Red Cross and Red Crescent Societies (IFRC, International): International First Aid, Resuscitation, and Education Guidelines: Bites and Stings.

ຄູ່ມືທີ່ກ່ຽວຂ້ອງ¶

• Bee, wasp, and hornet stings
• ຫມາຍຕິກແລະແມງມຸມກັດ
• Severe allergic reactions and anaphylaxis
• Snake bites clinical first aid
• Jellyfish and marine invertebrate stings
• ໝາຍເລກສຸກເສີນ ແລະ ການຈັດສົ່ງສາກົນ