Video: Puas yog potassium yog qhov zoo lossis tsis zoo Chronotropic?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Zoo chronotropic thiab tsis zoo inotropic tshuaj teebmeem ntxias by poov tshuaj chloride nyob rau hauv cov canine atrium cais. Los ntawm cov txiaj ntsig no, nws tau xaus qhov ntawd poov tshuaj tau ncaj qha tsis zoo cuam tshuam rau atrial contractility thiab ncaj qha zoo cuam tshuam rau atrial tus nqi.
Khaws qhov no saib, dab tsi yog Chronotropic zoo?
Chronotropic cov teebmeem (los ntawm chrono-, lub ntsiab lus lub sijhawm, thiab tropos, "tig") yog cov uas hloov pauv lub plawv dhia. Zoo chronotropes nce lub plawv dhia; tsis zoo chronotropes txo lub plawv dhia. Dromotrope cuam tshuam rau atrioventricular node (AV node) kev coj ua.
Ib tus tseem yuav nug, Chronotropy thiab Inotropy yog dab tsi? Cov tshuaj Cardioinhibitory ua rau lub plawv ua haujlwm los ntawm kev txo lub plawv dhia ( chronotropy myocardial contractility, inotropy ), lossis ob qho tib si, uas ua rau txo qis lub plawv tawm thiab cov hlab ntshav siab. Cov kev hloov pauv plawv no txo qis kev ua haujlwm ntawm lub plawv thiab kev siv cov pa myocardial oxygen.
Ua li no, dab tsi ua rau Chronotropic zoo?
Qhib ntawm β1-adrenergic receptors hauv plawv nce zoo chronotropic thiab ionotropic nkaus. Lub cev tiv thaiv kab mob hauv lub cev tau nce los ntawm kev nthuav dav ntawm cov hlab ntshav, feem ntau hauv cov leeg pob txha, tab sis kuj tseem nyob hauv lub raum thiab mesenteric ntshav ncig, uas yog ua by kev2-adrenergic system.
Cov txiaj ntsig zoo li cas tsis zoo Inotrope muaj rau lub plawv?
Inotropic cov neeg sawv cev, los yog inotropes , yog cov tshuaj uas hloov pauv koj lub zog lub plawv kev cog lus Muaj 2 hom inotropes : positive inotropes thiab tsis zoo inotropes . Zoo inotropes ntxiv dag zog rau lub plawv dhia. Tsis zoo inotropes qaug zog lub plawv dhia.
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