Video: Puas yog hypokalemia ua rau ST nce?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Muaj cov ntaub ntawv tsis tshua muaj tshwm sim ntawm hypokalemia (poov tshuaj los ntawm 1.3 txog 2.8 mmol / L) ua ST kev nyuaj siab thiab qhov siab ua raws li lub plawv ischemia. Mob hnyav hypokalemia tuaj yeem ua kuj tshwm sim nyob rau hauv arrhythmias xws li Torsades de cov ntsiab lus thiab ventricular tachycardia.
Hauv qhov no, puas yog hyperkalemia ua rau ST nce?
Hyperkalemia tau ua txawv EKG hloov. Thawj qhov kev hloov pauv feem ntau yog T wave ua siab, tom qab ntawd QRS txoj kev nthuav dav nrog qee qhov kev cuam tshuam kev cuam tshuam, poob ntawm P yoj thiab thaum kawg asystole. Txawm li cas los xij, qee zaus, hnyav heev hyperkalemia tau ua rau ST elevation uas tuaj yeem ua raws li STEMI.
Ib sab saum toj no, puas yog hypokalemia ua rau ST kev nyuaj siab? Kev cuam tshuam plawv ntawm hypokalemia feem ntau tsawg kawg kom txog thaum cov ntshav muaj cov poov tshuaj ntau dua <3 mEq/L. Hypokalemia ua rau sagging ntawm ST ntu , kev nyuaj siab ntawm T wave, thiab nce ntawm U yoj.
Ib yam li ib tug yuav nug, vim li cas hypokalemia ua rau QT ntev?
Cov qib poov tshuaj qis dua 3,0 mmol / l ua tseem ceeb Q-T ncua ncua sij hawm nrog kev pheej hmoo ntawm torsade des pointes, ventricular fibrillation thiab mob plawv tuag sai. Cov qib poov tshuaj ntau dua 6,0 mmol / l ua Peaked T waves, wider QRS komplexes thiab tej zaum yuav ua rau bradycardia, asystole thiab tam sim ntawd tuag.
Yuav ua li cas hypokalemia cuam tshuam rau kev ua haujlwm?
Hypokalemia tau pom tias tsim hyperpolarization ntawm so membrane peev xwm nyob rau hauv ventricular myocytes, ib tug cuam tshuam nrog nce amplitude ntawm peev xwm ua zoo li nce Vmax max ua, tus tshaj tawm ntawm peev xwm ua siab [77-80].
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