I-Beta-Blocker kanye ne-Calcium Channel Blocker Overdose: Isilinganiso senhliziyo esinensayo kanye ne-Shock Triage¶

Ama-Beta-blockers kanye nama-calcium channel blockers (CCBs) aphakathi kwemithi yenhliziyo nemithambo yegazi evame ukushiwo emhlabeni wonke, esetshenziswa nsuku zonke izigidi zabantu abadala ukuze kulawuleke umfutho wegazi ophakeme, i-angina, ukwehluleka kwenhliziyo, ukuhluleka kwenhliziyo, ukuqaqamba kwekhanda nokundindizela. Nokho, lapho umuntu ephuza ngokweqile, noma lapho ingane encane efuna ukwazi igwinya iphilisi elilodwa noma amabili abantu abadala abakhululwa isikhathi eside, lezi zigaba ezimbili zezidakamizwa zibangela ubuthi obubulalayo obubikwe ezikhungweni zokulawula ubuthi emhlabeni jikelele. Uma usola ukuthi othile uphuze ngokweqile iphilisi lomfutho wegazi noma iphilisi lokushaya kwenhliziyo, noma uma ingane kungenzeka ukuthi ifake ithebhulethi eyodwa emlonyeni wayo, shayela inombolo yakho yasendaweni yezimo eziphuthumayo (911 e-United States nase-Canada, 112 ngaphesheya kwe-European Union, 999 e-United Kingdom) usebenzisa yethu izinombolo eziphuthumayo uhla lwemibhalo ngokushesha. Ngoba ukuwohloka okukhulu kwenhliziyo nemithambo yegazi kungakhula ngokushesha noma kushaye amahora kamuva ngemva kokulibaziseka okukhohlisayo okungabonakali, buyekeza. ubuthi usizo lokuqala, ebona ukushaqeka kwezokwelapha, futhi i-cardiopulmonary resuscitation (CPR) ngesikhathi kusalindwe abezimo eziphuthumayo.

Okwenza i-beta-blocker ne-calcium blocker overdose ibe nobuqili ngendlela eyingqayizivele inhlanganisela yokuwa kwe-hemodynamic okusheshayo namaphilisi akhishwa ngokushesha kanye nesikhathi eside, esithule sokulinda amahora angu-6 kuya kwangu-24 ngokwakhiwa kokukhululwa okunwetshiwe (ER, XL, SR, CD, noma LA). Isiguli esigwinya i-verapamil, i-diltiazem, i-amlodipine, i-metoprolol, noma i-propranolol ekhishwa isikhathi eside singangena emnyangweni wezimo eziphuthumayo sixoxa ngokujwayelekile ngokushaya kwenhliziyo evamile nomfutho wegazi ovamile, bese singena ku-refractory bradycardia (izinga lokushaya kwenhliziyo elihamba kancane ngokuyingozi), ukushaqeka kwenhliziyo okuphelele, ukushaqeka kwenhliziyo okujulile, i-vasopleic 2 i-wax noma i-osmotic coating incibilika endaweni engezansi yamathumbu. Lo mhlahlandlela uhlanganisa izenzo ezisheshayo zangaphambi kwesibhedlela, ukubulawa kwephilisi elilodwa lezingane, indlela yokuhlukanisa i-beta-blocker nobuthi be-calcium channel blocker kusetshenziswa izinkomba zeglucose yegazi kanye ne-electrocardiogram, ukukhishwa kwamathumbu emathunjini kusenesikhathi, kanye nezimiso zokuhlenga zeyunithi yokunakekelwa okujulile okuhlanganisa umthamo ophezulu we-insulin euglycemic therapy (HIET), i-intravenous, i-calcium, i-glucamugon yokuhlenga.

Yenza lokhu manje¶

1. Shayela izinsizakalo zezokwelapha eziphuthumayo kanye nokulawula ubuthi ngokushesha: Shayela ku-911 (US nase-Canada), 112 (EU), noma 999 (UK) ngokushesha uma umuntu ephuze ngokweqile ngamabomu, enesiyezi, usozela, udidekile, uphelelwa umoya, noma enokushaya kwenhliziyo kancane noma umfutho wegazi ophansi, noma uma ingane igwinye ngisho nephilisi elilodwa. E-United States, wena noma umsizi ungase futhi ushayele Ukulawulwa Kobuthi ku-1-800-222-1222 ngenkathi ulinde i-ambulensi ukuze udokotela wezobuthi akwazi ukwazisa iyunithi yokunakekelwa okuphuthumayo esibhedlela etholayo kusenesikhathi.
2. Qoqa lonke ibhodlela lephilisi, iphakethe le-blister, kanye nomhleli wamaphilisi wamasonto onke: Vikela amabhodlela aqondile noma amaphakethe e-foil ukuze abezimo eziphuthumayo nodokotela bezimo eziphuthumayo bakwazi ukufunda igama lesidakamizwa, amandla e-milligram ngethebhulethi ngayinye, kanye nesijobelelo sokukhulula (njenge-ER, XL, SR, XT, LA, CD, noma ukukhishwa okusheshayo). Bala amaphilisi asele uma kungenzeka futhi uqaphele isikhathi esiqondile sewashi amaphilisi agwinywe ngaso.
3. Lalisa umuntu emhlane wakhe futhi umvimbele ukuthi asukume: Kokubili ama-beta-blockers nama-calcium channel blockers avimba ikhono lomzimba lokubopha imithambo yegazi noma ukusheshisa inhliziyo lapho umile. Ukuma noma ukuya emotweni kungabangela i-orthostatic syncope engazelelwe (ukuphelelwa amandla), ukuhlukumezeka ekhanda, noma ukuboshwa kwenhliziyo ngokushesha. Gcina umuntu elele (ehlezi ephansi) imilenze yakhe iphakanyiswe kancane emcamelweni ngaphandle uma edonsa kanzima ukuphefumula uketshezi olusemaphashini akhe (i-pulmonary edema), lapho gcina ikhanda namahlombe akhe ebheke phezulu ku-30 ​​kuya ku-45 degrees.
4. Ungalokothi ushayele isiguli esibhedlela ngokwakho: Ngenxa yokuthi ukuquleka kungazelelwe (ikakhulukazi nge-propranolol), ukuvimba kwenhliziyo yezinga lesithathu, kanye nokuboshwa kwenhliziyo kungenzeka ngaphandle kwesixwayiso ngaphakathi kwemoto yomuntu siqu ehambayo, hlala ulinde i-ambulensi yezimo eziphuthumayo efakwe iziqapha zenhliziyo, i-atropine emithanjeni, i-calcium, iglucagon, i-vasopressors, nama-transcutaneous transcutaneous cardiac yangaphandle.
5. Ungayengi ukuhlanza noma unikeze ukudla, ubisi, noma amanzi: Ungalokothi uzame ukwenza isiguli sibambe umlomo noma siphalaze. Ku-beta-blocker noma i-calcium channel blocker overdose, i-gagging ivuselela i-vagus nerve, ekhulula i-acetylcholine ku-node ye-sinoatrial ne-atrioventricular esivele icishiwe futhi ingamisa ngokushesha inhliziyo (vagal asystole). Gcina isisu singenalutho uma ngabe umnyango wezimo eziphuthumayo udinga ukunikeza amalahle acushiwe, ukuchelela ngamathumbu wonke, noma ukuthuthwa okulandelanayo ngokushesha.
6. Hlola ukusabela nokuphefumula njalo ngemizuzwana engama-60 futhi ulungiselele i-CPR: Hlala eduze komuntu. Uma bengaphenduli futhi beyeka ukuphefumula ngendlela evamile (noma bahefuze kuphela), qala ukucindezelwa kwesifuba ngokushesha ngenani lokucindezelwa okungu-100 kuya kwangu-120 ngomzuzu nokujula okungamasentimitha angu-5 kuya kwangu-6 (amayintshi angu-2 kuya kwangu-2.4) kumuntu omdala kuze kube yilapho abezimo eziphuthumayo bethatha izintambo.

Isihlahla sesinqumo: I-Beta-blocker kanye ne-calcium channel blocker overdose triage¶

flowchart TD
    Start["Ukungeniswa kwe-Beta-Blocker (BB) noma i-Calcium Channel Blocker (CCB) okusolwayo"] --> CallEMS["Shayela ku-911/112/999 kanye Nokulawula Ubuthi Besifunda Ngokushesha"]
    CallEMS --> Position["Gcina Isiguli Silele Phansi (Ungasivumeli Sime) futhi Qoqa Wonke Amabhodlela Amaphilisi"]
    Position --> CheckVitals{"Ingabe Isiguli Asiphenduli Noma Asiphefumuli Ngokujwayelekile?"}

    CheckVitals -->|Yes| StartCPR["Qala i-CPR yekhwalithi ephezulu esheshayo (100-120/min) bese unamathisela i-AED"]
    CheckVitals -->|No, Awake or Drowsy| IdentifyForm{"Hlola Ilebula Yebhodlela: Ukukhishwa Okusheshayo (IR) vs Ukukhishwa Okunwetshiwe (ER / XL / SR / CD)?"}

    IdentifyForm -->|Immediate-Release (IR) or Liquid| EarlyWindow["Iqala Phakathi Kwamaminithi angu-30 kuya Kumahora angu-2: Gada i-Rapid Bradycardia, Hypotension, noma Ukuquleka"]
    IdentifyForm -->|Extended-Release (ER/XL/SR) or Amlodipine| DelayedWindow["Ukuqala Kubambezeleke Kufike Emahoreni ayi-6 kuye kwangama-24: Okuphoqelekile Kwamahora angama-24 e-ICU / Telemetry Observation Noma ngabe Asymptomatic"]

    EarlyWindow --> HospitalArrival["Ukufika kwe-ED Esibhedlela: 12-Lead ECG, I-Point-of-Care Blood Glucose, Serum Electrolytes, Lactate"]
    DelayedWindow --> HospitalArrival

    HospitalArrival --> GI_Decon{"Yethulwe Phakathi Kwamahora Angu-1-2 (IR) noma Kusetshenziswa Ukukhishwa Okuqhubekayo / Umthwalo Onzima Wephilisi?"}
    GI_Decon -->|Yes, Airway Protected| GiveCharcoal["I-Single-Dose Activated Charcoal (1 g/kg kufika ku-50 g) + Ukuchelela Ngamathumbu Aphelele (PEG) Yokukhishwa Okunwetshiwe"]
    GI_Decon -->|No or Intubated First| DiffClue{"Hlola i-Fingerstick Blood Glucose kanye nezinkomba zokushaya kwenhliziyo"}
    GiveCharcoal --> DiffClue

    DiffClue -->|Hyperglycemia (High Blood Sugar) + Hypotension| SuspectCCB["Umkhondo Oqinile Wokuvimba Isiteshi Se-Calcium (CCB) Ubuthi (Iziteshi Ezivinjiwe zePancreatic L-Type Calcium)"]
    DiffClue -->|Hypoglycemia or Normal Sugar + Bradycardia / Seizures| SuspectBB["Umkhondo Oqinile We-Beta-Blocker (BB) Ubuthi (I-Glycogenolysis Evinjiwe; Hlola i-QRS/QTc ye-Propranolol/Sotalol)"]

    SuspectCCB --> RescueProtocol["I-Stepwise ICU Rescue: IV Crystalloids, IV Calcium (Chloride/Gluconate), Atropine, Norepinephrine/Epinephrine, High-Dose Insulin Euglycemic Therapy (HIET 1-10 U/kg/hr + Dextrose)"]
    SuspectBB --> RescueProtocol2["I-Stepwise ICU Rescue: IV Atropine, IV Glucagon Bolus + Infusion, IV Calcium, Catecholamine Vasopressors, High-Dose Insulin (HIET), Sodium Bicarbonate uma QRS > 100 ms"]

    RescueProtocol --> RefractoryShock{"I-Refractory Shock noma Ukuboshwa Kwenhliziyo Naphezu Kokwelashwa Okukhulu Kwezokwelapha?"}
    RescueProtocol2 --> RefractoryShock
    RefractoryShock -->|Yes| ECMO_Rescue["Ukubonisana ngokushesha kwe-Veno-Arteerial ECMO (VA-ECMO), Intravenous Lipid Emulsion (20% Intralipid), noma iMethylene Blue yeVasoplegia"]

Ukuhlonza umuthi onecala: Izigaba zezidakamizwa, amagama emikhiqizo, nezijobelelo¶

Ukwazi ukuthi ingabe imithi ephuziwe iyi-beta-blocker noma i-calcium channel blocker, nokuthi ungowasiphi isigaba esingaphansi, kunquma ngokuqondile ukuthi yiziphi izinkinga ithimba lezimo eziphuthumayo okufanele lizilindele.

1. Izivimbeli ze-beta-adrenergic receptor (amagama ajwayelekile agcina ngo-"-olol", "-alol", noma "-ilol")¶

Ama-Beta-blockers aphikisana ngokuncintisana nama-beta-1 adrenergic receptors enhliziyweni (ukunciphisa izinga le-sinoatrial pacemaker, ukunciphisa ukuhamba kwe-atrioventricular nodal, nokuncipha kwe-contractility) nama-beta-2 receptors emaphashini, emithanjeni yegazi, nesibindi (okubangela i-bronchospasm kanye nokukhululwa kwe-glucose ye-hepatic blunting). Ama-ejenti athile aphatha ubuthi obungewona be-beta lapho kudlula idosi:

• I-Propranolol (Inderal, Inderal LA), i-Acebutolol (i-Sectral), i-Carvedilol (i-Coreg), ne-Labetalol (i-Trandate): I-Voltage-Gated Sodium Channel Blockade:
• I-Propranolol iyi-beta-blocker ebulala kakhulu ekusetshenzisweni ngokweqile kwe-acute. Ngenxa yokuthi ine-lipophilic (encibilika ngamafutha)* kakhulu, yeqa umgoqo wegazi nobuchopho phakathi kwemizuzu engu-20 kuya kwengama-60 ukuze ibangele ukukoma okuzumayo kanye nokuquleka okujwayelekile. Ngesikhathi esifanayo, ivimbela i-cardiac fast voltage-gated amashaneli e-sodium, inweba i-QRS complex (> 100 kuya ku-120 ms), ikhiqize igagasi elingu-R ku-lead aVR, futhi ibangele ama-ventricular arrhythmias adinga ukufakwa emthanjeni okuphuthumayo hypertonic sodium bicarbonate.
• I-Sotalol (i-Betapace, i-Sorine): I-Potassium Channel Blockade kanye ne-Torsades de Pointes:
• I-Sotalol ivimba inhliziyo yangaphandle amashaneli e-potassium, enweba ngokuphawulekayo isikhathi QTc futhi ibangele i-polymorphic ventricular tachycardia (Torsades de Pointes), edinga i-intravenous magnesium sulfate, ukubuyiswa kwe-potassium, nokuhamba ngesivinini esiphezulu.
• I-Cardioselective Beta-1 Blockers: Atenolol (Tenormin), Metoprolol (Lopressor, Toprol-XL), Bisoprolol (Zebeta), neNebivolol (Bystolic):
• Ukukhethwa kwe-receptor kulahleka ngokudlula ngokweqile okukhulu. Ngenxa yokuthi i-atenolol* kanye ne-sotalol ancibilika emanzini ngokubopha amaprotheni aphansi kanye nokuvunyelwa kwezinso, yizivimba-beta ezimbili ezisulwe ngempumelelo nge-hemodialysis.

2. Izivimbeli zesiteshi se-calcium (Non-Dihydropyridines vs. Dihydropyridines)¶

Izivimbeli zesiteshi se-calcium zivimbela i-voltage-gated iziteshi ze-calcium zohlobo lwe-L ezishayela i-sinoatrial/atrioventricular nodal conduction, ukufinyela kwe-myocyte yenhliziyo, kanye nethoni yemisipha ebushelelezi yemithambo:

1. Non-Dihydropyridine ("Cardioselective") CCBs: Verapamil (Calan, Isoptin, Verelan) kanye ne-Diltiazem (Cardizem, Cardizem CD, Cartia XT, Tiazac):
2. Ukubophezela ngokusondelana okuphezulu kumashaneli ohlobo lwe-L kukho kokubili inhliziyo yenhliziyo/amaseli e-myocyte kanye nemithambo yegazi ejikelezayo, okubangela i-triad ebulalayo ye-i-bradycardia enzima/i-AV block, **ukwehluleka kwephampu ye-cardiogenic **, kanye ne-peripheral vasodilation. I-Verapamil ne-diltiazem zithwala ukufa okuphezulu kakhulu kwazo zonke izidakamizwa zenhliziyo nemithambo yegazi.
3. I-Dihydropyridine ("I-Vascular-Selective") ama-CCB (agcina ngo "-dipine"): Amlodipine (Norvasc), Nifedipine (Procardia XL, Adalat CC), Felodipine (Plendil), kanye ne-Nicardipine (Cardene):
4. Yenza ngokuyinhloko ku peripheral vascular smooth muscle, okubangela okujulile i-arterial vasodilation kanye ne-hypotension ephelezelwa ekuqaleni reflex sinus tachycardia (izinga lokushaya kwenhliziyo okusheshayo). Ema-overdose amakhulu, ukukhetha kuyalahleka futhi kuthuthukiswe ukuvimba kwenhliziyo. I-Amlodipine inesigamu sempilo yamahora angama-30 kuya kwangama-50 (kufika emahoreni ayi-100 ekusetshenzisweni ngokweqile), edinga izinsuku zokusekelwa kwe-ICU.

Kungani Ushukela Wegazi (Hyperglycemia vs. Hypoglycemia) Kuwuphawu Olubalulekile Olubalulekile Lokuxilonga¶

Ukuhlolwa kweglucose yegazi** komunwe womunwe** ngokushesha kuhlukanisa ngokushesha i-beta-blocker nobuthi be-calcium channel blocker futhi kubikezele ukushaqeka okukhulu:

1. Kungani I-Calcium Channel Blocker Overdose Idala I-Hyperglycemia Enzima¶

Amaseli e-pancreatic beta-islet adinga ukungena kwe-calcium ngamashaneli e-calcium ohlobo lwe-voltage-gated L-uhlobo lwe-L** ukuze akhiphe i-insulin egazini. Lapho i-verapamil, i-diltiazem, i-amlodipine, noma i-nifedipine ivimba lawa mashaneli, ukukhishwa kwe-insulin endo native kuyama bese kukhula ukumelana ne-insulin okuhleliwe: - Ngaphansi kwengcindezi enobuthi nokushaqeka, imisipha yenhliziyo ishintsha uphethiloli wayo oyisibopho usuke ku-fatty acids mahhala iye ku-glucose*. - Ngaphandle kwe-insulin, imisipha yenhliziyo elambile ayikwazi ukukhipha ushukela egazini iye kuma-myocyte enhliziyo. - I-Serum blood glucose ikhuphuka ngokushesha (ngokuvamile 200 kuya ku-400+ mg/dL [11.1 kuya ku-22.2+ mmol/L] kwabangewona abanesifo sikashukela), futhi izinga le-hyperglycemia lihlobana ngokuqondile nobunzima be-overdose nobungozi bokufa.

2. Kungani I-Beta-blocker Overdose Idala I-Hypoglycemia kanye Nemaski Izimpawu Zayo¶

Ama-Beta-blockers avimbela i-beta-2 adrenergic receptors esibindini, avimbe glycogenolysis kanye gluconeogenesis. Ezinganeni ezisacathula, ezinganeni, nakubantu abadala abazilayo, lokhu kubangela ukwehla kwesisindo esinamandla kakhulu (ushukela wegazi ongaphansi kuka-70 mg/dL noma u-3.9 mmol/L) kuyilapho ngesikhathi esifanayo kufiphaza izimpawu eziyisixwayiso ze-adrenergic (ukundindizela nokushaya ngamandla), okubangela ukukhoma okungazelelwe kwe-hypoglycemic noma ukuquleka.

Ukubulala Iphilisi Elodwa Lezingane kanye Nebhomu Lesikhathi Sokukhishwa Esandisiwe¶

1. Kungani Ithebhulethi Eyodwa Yabantu Abadala Ingabulala Ingane Encane¶

Izivimbeli zeziteshi ze-calcium zingamalungu abalulekile ohlu lwezingane oluthi "Iphilisi Elilodwa Lingabulala": - Ithebhulethi eyodwa yomuntu omdala ekhululwe okuqhubekayo ye-verapamil (120 kuya ku-240 mg), diltiazem CD (180 kuya ku-360 mg), nifedipine XL (30 kuya ku-90 mg), noma amlodipine (5 kuya ku-10 mg) igwinywe yi-3 kg (2l2 kuya ku-5) i-refractory hypotension, ukuvimba kwenhliziyo okuphelele, nokuboshwa kwenhliziyo okubulalayo. - Ngenxa yokuthi ama-coatings ahlala isikhathi eside abambezela ukumuncwa, ingane egwinya iphilisi elilodwa ekuseni ingabonakala ivamile ngokuphelele intambama yonke futhi ibanjwe inhliziyo ebulalayo lapho ilele ngalobo busuku. - Iphrothokholi Yezingane Eyisibopho: Noma iyiphi ingane eyaziwayo noma esolwa ngokudla ngisho nesivimbeli sesiteshi se-calcium esikhishwa okuqhubekayo noma isivimbeli se-beta kufanele ihanjiswe nge-ambulensi isiwe emnyangweni wezimo eziphuthumayo futhi yamukelwe okungenani amahora angu-24 okuqapha okuqhubekayo kwenhliziyo yenhliziyo, ngisho noma ingabonakali ngokuphelele.

2. Nquma Izijobelelo Zokukhululwa Okunwetshiwe Ebhodleleni Lephilisi¶

Ukukhipha Ukungcola Kwesisu: Ukumisa Ukumuncwa Ngaphambi Kokuncibilika Kokunamathela¶

Ngenxa yokuthi amaphilisi akhishwa isikhathi eside anganqwabelana ku-pharmacobezoar aphuma kancane futhi athwale ukufa okuphezulu uma esemuncwa, kusheshe ukuqeda ukungcola kubalulekile:

1. I-Single-Dose Activated Charcoal (SDAC): Ilawulwa ku-1 g/kg (kufika ku-50 g)* ngaphakathi kumahora angu-1 kuya kwangu-2 okukhishwa ngokushesha, noma kufika emahoreni angu-4 kuya kwangu-6+ ngemva kokungenisa okunwetshiwe, inqobo nje uma isiguli siphapheme futhi sesivele sivikele indlela yaso yokuphefumula (i-airba).
2. Ukuchelela Kwamathumbu Aphelele (WBI): Kulawulwa ngeshubhu le-nasogastric kusetshenziswa isixazululo se-polyethylene glycol electrolyte (PEG-ELS) ku-1.5 kuya ku-2 L/ihora kubantu abadala* (25 kuya ku-40 mL/kg/ihora ezinganeni) ngokuphuza okukhulu kwe-verapamil, i-dirapamildiasel, i-dirapamil eqhubekayo noma i-dirapamil eqhubekayo ama-beta-blockers kuze kube yilapho ukungcola kwe-rectal kuphelile. Ivinjiwe ekuvinjweni kwamathumbu, endleleni yokuphefumula engavikelekile, noma esungulwe ukushaqeka okukhulu nge-ileus.

Isibhedlela iStepwise kanye ne-ICU Rescue Protocols¶

Lapho isiguli siba ne-symptomatic bradycardia, i-conduction blocks, noma i-hypotension evela ku-beta-blocker noma i-calcium channel blocker overdose, izidakamizwa ezijwayelekile ze-single-agent advanced cardiac life support (ACLS) njenge-atropine iyodwa cishe njalo ihluleka ngenxa yokuthi ama-receptors noma iziteshi ezikude zigcwele. Ithimba labagula kakhulu lisebenzisa inqwaba ye-multipronged metabolism kanye ne-hemodynamics kanyekanye:

Isinyathelo 1: Isexwayiso se-Airway, I-Intravenous Fluids, ne-Atropine¶

• Isixwayiso Esidlulele Nge-Rapid Sequence Intubation (RSI): Ukufaka isiguli esiku-cardiogenic noma ukushaqeka kwe-vasoplegic kususa idrayivu yozwelo yozwelo futhi kwehlise ukubuya kwe-venous ngokungenisa umoya opholile, okungase kubangele ukuboshwa kwenhliziyo ye-peri-intubation. Ngaphambi kokufaka i-intubating, odokotela bezimo eziphuthumayo baqala i-push-dose epinephrine noma ukumnika okuqhubekayo kwe-norepinephrine, banikeze i-calcium emthanjeni, futhi basebenzise ama-induction agents azinzile nge-hemodynamically (njenge-ketamine noma i-etomidate).
• I-Judicious Intravenous Crystalloids: Lawula i-bolus yokuqala engu-10 kuya ku-20 mL/kg (500 kuya ku-1,000 mL kumuntu omdala)* ye-isotonic crystalloid ebhalansile ukuze kulungiswe i-hypovolemia ehlobene kusukela ku-vasodilation. Gwema ukugcwala koketshezi olunamalitha amaningi ngoba ukuncipha kwe-myocardial contractility kanye ne-insulin yomthamo omkhulu kushesha ukuqubuka kwe-acute pulmonary edema.
• I-Intravenous Atropine: Phatha 0.5 mg kuya ku-1 mg IV (noma **0.02 mg/kg ezinganeni **, ubuncane be-0.1 mg) njalo ngemizuzu emi-3 kuya kwemi-5 kuze kufike ku- 3 mg isiyonke ye-bradycardia enezimpawu njengebhuloho lokuqala kuyilapho kulungiswa i-calcium, iglucagon, ne-insulin yedosi ephezulu.

Isinyathelo sesi-2: I-Intravenous Calcium Salts (Chloride noma Gluconate)¶

Ukukhulisa i-calcium ionized engaphandle kwe-extracellular kudala i-concentration gradient ephoqa i-calcium ion ngokusebenzisa iziteshi ze-calcium ezingavaliwe zohlobo lwe-L zibe ama-myocyte enhliziyo namaseli emisipha abushelelezi emithambo, ethuthukisa ukufinyela kwe-myocardial nomfutho wegazi:

• 10% Calcium Chloride (Central Line noma Cardiac Arrest): Iqukethe i-calcium elemental ephindwe kathathu ngemililitha eyodwa kune-calcium gluconate (10 mL of 10% Calcium Chloride = 1 gram = 272 mg [13.6 mEq] elemental calcium). Ilawulwa njengokuthi 10 kuya ku-20 mL (1 kuya ku-2 amagremu) IV kancane kancane ngaphezu kwemizuzu emi-5 ukuya kweyi-10 (noma 0.2 mL/kg ezinganeni), iphindaphindwa njalo emizuzwini eyi-10 kuye kwengama-20 noma ilandelwe ukumnika okuqhubekayo (0.2 to 0.4 mL/kg/hour), eqondise izinga le-calcium e-ionized cishe eliphindwe kabili evamile (2.0 kuya ku-2.5 mmol/L). I-Calcium chloride idala i-necrosis yezicubu ezinzima uma iphuma ku-peripheral IV.
• 10% I-Calcium Gluconate (Iphephile Emigqeni Ye-peripheral IV): Iqukethe 90 mg (4.65 mEq) elemental calcium per 10 mL vial. Ngenxa yokuthi iyingxenye eyodwa kwezintathu njengoba igxilile, sebenzisa umthamo ophindwe kathathu: 30 mL kuya ku-60 mL (3 kuya ku-6 amagremu) IV ngaphezu kwemizuzu engu-10 (noma **0.6 mL/kg ezinganeni **), iphindaphindwa njalo ngemva kwemizuzu engu-10 kuya kwengu-20 noma igijime njengokumnika okuqhubekayo (0.6 to 1.5 mL/kg/hour).
• Okuhlukile: Ungalokothi unikeze i-calcium emthanjeni uma isiguli sinobuthi be-digoxin.

Isinyathelo sesi-3: I-Glucagon Yedosi Ephezulu (Ngokuqondile I-Beta-Blocker Overdose)¶

Ku-overdose ye-beta-blocker, i-beta-1 adrenergic receptor iyavinjelwa, ivimbela i-catecholamines ekukhiqizeni i-intracellular cyclic adenosine monophosphate (cAMP).

• Indlela: I-Glucagon ibophezela esamukeli sayo se-glucagon senhliziyo, ivule i-adenylyl cyclase futhi ikhiqize i-intracellular cAMP ezimele ngokuphelele kwesamukeli se-beta-1 ukuze kwandiswe izinga lokushaya kwenhliziyo nokufinyela.
• I-Dosing Protocol: Nikeza i-IV bolus yokuqala engu- 5 mg kuya ku-10 mg yeGlucagon kubantu abadala (noma 0.05 kuya ku-0.15 mg/kg ezinganeni) ngaphezu kwemizuzu engu-1 kuya kwemi-2. Ngenxa yokuthi i-glucagon ine-half-life emfushane yemizuzu engu-8 kuya kweyi-16, landela impendulo eqondile ngokushesha ngokufakwa kwe-IV okuqhubekayo ku- 2 mg kuya ku-10 mg ngehora.
• Ukwelashwa Kwangaphambili Kwe-Antiemetic: I-glucagon enedosi ephezulu iphumuza i-sphincter engezansi yomminzo futhi ibangele ukuhlanza. Njalo yelapha kusengaphambili ngomthambo ondansetron (4 kuya ku-8 mg IV) futhi uvikele indlela yokuphefumula.

Isinyathelo sesi-4: I-catecholamine Vasopressors, i-Sodium Bicarbonate, ne-Magnesium¶

Imihlahlandlela yamanje ye-toxicology incoma ukuthi kuqalwe ukufakwa kwe-catecholamine ngedosi ephezulu kusenesikhathi eduze noketshezi ne-calcium:

• I-Epinephrine ne-Norepinephrine: Ifakwe ngomugqa omaphakathi ukuze inikeze ukwesekwa kwe-beta-1 adrenergic inotropic/chronotropic (ye-bradycardia nokwehluleka kwephampu) kanye ne-alpha-1 adrenergic vasoconstriction (ye-dihydropyridine vasoplegic shock).
• I-Sodium Bicarbonate ye-Propranolol Enwetshiwe QRS: Uma isiguli siphuze i-propranolol, i-acebutolol, noma i-carvedilol futhi i-ECG ibonisa ukunwetshwa isikhawu se-QRS esikhulu kuno-100 kuya ku-120 milliseconds, sebenzisa *1 kuya ku-2 mEq/kg i-Hypertonic Sodium Bicarbonates incipha kuze kube yilapho i-IV1 yobuciko be-Sodium Bicarbonate ifinyela ngaphansi kwe-IV1 art I-pH ifinyelela ku-7.45 kuya ku-7.55.
• I-Magnesium Sulfate ye-Sotalol Eyenziwe Nge-QTc: Uma isiguli sidle i-sotalol futhi sine-QTc ende noma i-Torsades de Pointes, nikeza 2 amagremu we-Magnesium Sulfate IV ngaphezu kwemizuzu emi-5 ukuya kweyi-10, gcwalisa i-potassium ku-4.5 kuya ku-5.0 mEq/Lterrerate panol ukuze ushayele phezulu*, futhi usebenzise isilinganiso senhliziyo

Isinyathelo sesi-5: I-High-Dose Insulin Euglycemic Therapy (HIET): I-Gold-Standard Metabolic Rescue¶

I-High-Dose Insulin Euglycemic Therapy (HIET) iyitshe lesisekelo lokuhlenga ngokwemithi ekusetshenzisweni ngokweqile kwe-calcium blocker blocker kanye ne-refractory beta-blocker cardiogenic shock. Ngoba i-HIET ithatha imizuzu eyi-15 kuye kwengama-45 ukuze ifinyelele umphumela omkhulu we-inotropic, iqale kusenesikhathi lapho kusolwa ukungasebenzi kahle kwe-myocardial noma ukushaqeka:

1. Indlela Yesenzo: Imithamo emikhulu ye-insulin inqoba ukuvinjelwa kwe-calcium ye-pancreatic kanye nokungazweli kwe-insulin, hambisa izithuthi ze-GLUT4 kulwelwesi lweseli le-myocardial ukuze inhliziyo ecindezelekile ikwazi ukushisa i-glucose/pyruvate ye-ATP, ithuthukise ngokuqondile ukuphathwa kwe-intracellular sarcoplasmic reticulum calcium (okuthuthukisa kakhulu ukufinyela kwenhliziyo), futhi kuthuthukiswe i-microvascular perfusion nitrical synoxide.
2. I-Baseline Glucose and Potassium Check: Uma ushukela wegazi wesisekelo ungaphansi kuka-200 mg/dL (11.1 mmol/L), nika 25 kuya ku-50 amagremu we-IV Dextrose kuqala; uma i-serum potassium ingaphansi kuka-3.0 mEq/L*, qala ukubuyisela i-potassium.
3. I-Insulin IV Bolus Evamile kanye Nokufakwa Okuqhubekayo: Nikeza 1 Iyunithi/kg I-Insulin IV yomuntu ejwayelekile yebolus (isb., Amayunithi angama-70 kuye kwangama-80 kumuntu omdala), okulandelwa ngokushesha ukujova kwe-Insulin Okuqhubekayo okuqala ku-1 Iyunithi/kg/ihora futhi kunyuswe phezulu njalo ngemizuzu engu-30 kuya ku-15/kg* kuze kufike ku-30sur kuya ku-15 kg* ukuqina kwenhliziyo kanye nokugcwala kwezicubu kuyalulama.
4. I-Dextrose Co-Infusion Egxilisiwe: Faka D10W, D20W, noma D50W (ngomugqa omaphakathi) kokuthi 0.5 kuya ku-1.0 g/kg/ihora, uhlola ushukela wegazi njalo emizuzwini eyi-15 ukuya kwengama-30 ukuze ulondoloze i-euglycemia (*110 kuye ku-180 mg/dl) [16.0 mg/dL]). Ukufakwa kwe-dextrose ngokuvamile kufanele kuqhubeke amahora angu-24+ ngemva kokumisa i-insulin njengoba ukukhishwa kwe-insulin ye-endogenous pancreatic kuqhubeka futhi.
5. I-Potassium Monitoring: I-insulin yedosi ephezulu ishintsha i-potassium ibe amaseli ngaphandle kokunciphisa isamba sezitolo zomzimba. Hlola i-serum potassium njalo emahoreni angu-1 kuya kwangu-2 futhi ugcine amazinga aphakathi kuka-2.8 no-3.2 mEq/L* ukuze ugweme i-hyperkalemia ephindaphindayo lapho i-insulin ilunyulwa.

Isinyathelo sesi-6: I-Refractory Rescue: I-Pacing, i-Methylene Blue, i-Lipid Emulsion, ne-VA-ECMO¶

• I-Transcutaneous and Transvenous Pacing: Izanyelwe i-bradycardia eqinile noma ibhulokhi ye-AV yezinga eliphezulu, nakuba ukuthwebula kukagesi noma kokusebenza ngokuvamile kwehluleka ku-myocardium elambile kakhulu ye-calcium.
• Methylene Blue: Ilawulwa (1 to 2 mg/kg IV over 20 minutes) ye-refractory dihydropyridine (amlodipine/nifedipine) ukushaqeka kwe-vasoplegic ukuvimbela i-guanylyl cyclase nokubuyisela ithoni yemithambo.
• I-Intravenous Lipid Emulsion (20% Intralipid): Ilawulwa (1.5 mL/kg IV bolus, bese 0.25 mL/kg/min) ngobuthi obuyingozi bezidakamizwa ze-lipophilic (verapamil, diltiazem, amlodipine, propranolol) obungaphenduli ekwelashweni okujwayelekile.
• I-Veno-Arterial ECMO (VA-ECMO): Ukukhanselwa kwangaphambi kwesikhathi kwe-VA-ECMO ibhuloho eliqinisekile elisindisa impilo lokushaqeka kwe-cardiogenic refractory noma ukuboshwa kwenhliziyo, ukusekela ukujikeleza kanye komoya-mpilo izinsuku ezi-3 kuya kweziyi-7 kuze kube yilapho umuthi ugawulwa yi-metabolism.

Izinombolo zezimo eziphuthumayo zesifunda kanye nezinqubomgomo ze-ejensi¶

Imibuzo ejwayelekile ukubuzwa¶

Ujahidada wami kungenzeka ukuthi ubeke elinye lamaphilisi omfutho wegazi kagogo nomkhulu emlonyeni wawo, sekudlule amahora ama-4, futhi usegijima enza okujwayelekile ngokuphelele. Ingabe sisadinga ukuya egumbini lezimo eziphuthumayo?¶

Yebo, kufanele uyise ingane emnyangweni wezimo eziphuthumayo esibhedlela ngokushesha noma ushayele ku-911. Iphilisi elilodwa lomuntu omdala elikhishwa isikhathi eside le-verapamil, i-diltiazem, i-nifedipine, noma i-amlodipine lingabulala ingane encane. Ngenxa yokuthi izigqoko ezihlala njalo zenzelwe ukuba zincibilike kancane kancane emgudwini wokugaya ukudla ophansi phakathi namahora angu-12 kuya kwangu-24, ingane ingase ibukeke iphile kahle futhi idlala ngamaphesenti angu-100 amahora okuqala angu-6 kuya kwayi-14 bese kuthi kungazelelwe ivalwe inhliziyo futhi ibambeke lapho ilele ebusuku. Yonke ingane enomuthi owaziwayo noma osolwa ngokumunca isivimbeli sesiteshi se-calcium esikhishwa njalo noma i-beta-blocker idinga okungenani amahora angu-24 okuqapha inhliziyo eqhubekayo esibhedlela.

Kwenzekani uma umuntu omdala ethatha ngephutha umthamo ophindwe kabili (amaphilisi amabili esikhundleni selilodwa) wemithi yakhe yansuku zonke ayinqunyelwe yomfutho wegazi?¶

Uma umuntu omdala ethatha ngephutha umthamo owodwa ophindwe kabili we-beta-blocker yakhe yansuku zonke (efana ne-metoprolol noma i-atenolol) noma isivimbeli sesiteshi se-calcium (njenge-amlodipine noma i-diltiazem), shayela isikhungo sakho sokulawula Ubuthi sesifunda (1-800-222-1222 e-US) khona manjalo uphethe ibhodlela esandleni. Ezimweni eziningi lapho isiguli sesikwazi kakade ukubekezelela incwadi kadokotela yaso yansuku zonke futhi singenakho ukuvimba kwenhliziyo okuqinile, ukuthatha amaphilisi aso amabili avamile kubangela isiyezi esithambile noma ukushaya kwenhliziyo okunensa okungabhekwa ngokuphepha ngemva kokuba uchwepheshe wobuthi ebale isilinganiso esiqondile se-milligram, ngaphandle uma umuntu enokwehluleka kwezinso okukhulu, uthatha kokubili i-beta-blocker kanye ne-verapamil/diltiazzie, ukushaya kwenhliziyo okuhlangene, i-diltiazem, i-diltiazem noma ubuhlungu benhliziyo. 50 beats ngomzuzu.

Kungani odokotela bezimo eziphuthumayo benikeza imithamo emikhulu ye-insulin esigulini esingenaso isifo sikashukela ngemva kokudlula ngokweqile kwe-calcium blocker blocker?¶

Izivimbeli zesiteshi se-calcium zikhubaza iziteshi ze-calcium zohlobo lwe-L kukho kokubili inhliziyo namanyikwe, zivale ukukhululwa kwe-insulin yemvelo emzimbeni kuyilapho ngesikhathi esifanayo ziphoqa imisipha yenhliziyo ecindezelekile ukuba ithembele ku-glucose esikhundleni sama-acids anamafutha ukuze uthole amandla. Ngaphandle kwe-insulin, imisipha yenhliziyo elambile ayikwazi ukumunca ushukela egazini futhi ilahlekelwe amandla ayo okukhama. Ukujova i-insulin evamile yomthamo omkhulu (Amayunithi angu-1 kuye kwayi-10 ngekhilogremu ngehora, ephindwe izikhathi eziyishumi kunemithamo yesifo sikashukela) kanye noshukela ogxilile ofakwa emithanjeni (dextrose) kuphoqa amandla kumaseli emisipha yenhliziyo, kuthuthukisa ukuphathwa kwe-calcium engaphakathi kweseli, futhi kubuyisela amandla okumpompa inhliziyo kangcono kunanoma yimuphi omunye umuthi.

Kungani i-propranolol ibhekwa njengeyingozi kakhulu ekusetshenzisweni ngokweqile kwe-acute kunamanye ama-beta-blockers afana ne-metoprolol noma i-atenolol?¶

Ngokungafani nama-beta-blockers ancibilikayo emanzini ahlala kakhulu egazini, i-propranolol i-fat-soluble kakhulu (i-lipophilic) futhi ivimbela iziteshi ze-sodium ezine-voltage esheshayo enhliziyweni nasebuchosheni. Ngenxa yokuthi inqamula umgoqo wegazi nobuchopho ngokushesha, ukweqisa kwe-propranolol kungabangela i-coma engazelelwe kanye nokuquleka okujwayelekile okunodlame phakathi kwemizuzu engu-20 kuya kwengama-60 yokugwinya amaphilisi. Ngesikhathi esifanayo, ukuvinjelwa kwayo kweshaneli ye-sodium kunweba inkimbinkimbi ye-QRS kagesi yenhliziyo futhi kubangele ukugula kwe-ventricular arrhythmia, okudinga i-intravenous bicarbonate ye-sodium ephuthumayo ngaphezu kokwelashwa okujwayelekile kwe-beta-blocker.

Ingabe i-hemodialysis (umshini wokuhlanza izinso) ingakwazi ukuhlunga ama-beta-blocker noma izivimbeli zesiteshi se-calcium ngaphandle kwegazi?¶

Cishe kuwo wonke ama-calcium channel blockers (i-verapamil, i-diltiazem, i-amlodipine, i-nifedipine) kanye neningi lama-beta-blockers (i-propranolol, i-metoprolol, i-carvedilol, i-labetalol), i-hemodialysis AYIKWAZI ukususa umuthi ngoba leyo mithi iboshelwe ngokuqinile kumaprotheni egazi futhi isatshalaliswa ekujuleni kwamafutha omzimba nezicubu. Nokho, kukhona okuhlukile okubili okubalulekile: I-Atenolol ne-Sotalol ayincibiliki emanzini, ine-protein encane kakhulu ebophayo, futhi isuswa yizinso, ngakho-ke i-hemodialysis ephuthumayo ingasusa ngokuphumelelayo kokubili i-atenolol ne-sotalol egazini, ikakhulukazi ezigulini ezinokulimala kwezinso.

Iziqondiso ezihlobene¶

• I-Aspirin (salicylate), iphilisi lensimbi, kanye ne-tricyclic antidepressant overdose
• Ubuthi be-Digoxin, ama-halos ombono ophuzi-oluhlaza, kanye ne-cardiac arrhythmia triage
• Usizo lokuqala olunobuthi kanye nokuhlolwa kokulawula ubuthi
• Ukubona nokwelapha ukushaqeka kwezempilo
• Ukuvuselelwa kweCardiopulmonary (CPR) kanye nomhlahlandlela we-AED

Imithombo neziqondiso ezisemthethweni¶

• I-American College of Medical Toxicology (ACMT) & American Association of Poison Control Centers (AAPCC): Izincomo Zokuvumelana Kochwepheshe Zokulawulwa Kwe-Calcium Channel Blocker kanye Ne-Beta-Blocker Poisoning Ekunakekelweni Okubalulekile.
• I-American Heart Association (AHA): I-2023 I-Focused Update and Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care: Management of Critical Poisoning (Beta-Blockers and Calcium Channel Blockers).
• I-European Resuscitation Council (ERC): Imihlahlandlela Yokuvuselela: Ukuboshwa Kwenhliziyo Ezimweni Ezikhethekile: Izimo Eziphuthumayo Ze-Toxicologic.
• I-EXTRIP (Imithi Yokwelapha Eyengeziwe Enobuthi) Iqembu Lokusebenza: Ukubuyekezwa Okuhlelekile Nezincomo Zokwelashwa Kwe-Extracorporeal ku-Beta-Blocker kanye Ne-Calcium Channel Blocker Poisoning.
• I-National Poisons Information Service (NPIS, United Kingdom) & World Health Organization (WHO): TOXBASE Clinical Management of Acute Cardiovascular Drug Overdose kanye ne-High-Dose Insulin Euglycemic Therapy Protocols.

Lo mhlahlandlela ngowezinjongo zokwaziswa futhi awuthathi indawo yokuhlolwa kochwepheshe bezokwelapha, ukubonisana nokulawulwa Kobuthi, noma ukunakekelwa okukhulu kwasesibhedlela. Ngenxa yokuthi ukweqisa kwemithi yenhliziyo nemithambo yegazi kungabangela ukulahlekelwa ukwazi okungazelelwe kanye nokuboshwa kwenhliziyo, sincoma kakhulu ukuthatha usizo lokuqala oluvunyelwe ngezandla kanye nesifundo se-CPR nge-International Federation of Red Cross and Red Crescent Societies (IFRC), umphakathi wakho kazwelonke we-Red Cross, i-St John Ambulance, noma umhlinzeki wendawo oqinisekisiwe.