Atrial Fibrillation vs Atrial Flutter
Atrial fibrillation thiab atrial flutter yog ob qho kev sib txawv ntawm lub plawv.
Lub plawv cog lus sib dhos. Muaj autonomic pacemakers hauv plawv. Lawv yog SA node thiab AV node. SA node nyob rau hauv txoj cai atrium. Nws tawm suab nrov ntawm tus nqi ntawm 60-100 neeg ntaus ib feeb. Yog tias SA node tsis ua haujlwm, AV node yuav dhau mus. AV node nyob ze rau ntawm tricuspid valve. AV node tawm ntawm tus nqi ntawm 40-60 neeg ntaus ib feeb. Lub AV node muaj lub sijhawm refractory uas nws tsis xa cov impulses. Yog tias ob lub impulses ncav cuag AV node nws yuav kis tau tus thawj. Yog tias qhov thib ob mus txog AV node thaum lub sijhawm refractory, AV node yuav tsis xa nws. Yog tias AV node kuj tsis ua haujlwm zoo, Purkinje fibers (khoom ntawm Nws) yuav siv sijhawm. Cov paj hlwb thiab cov tshuaj hormones tswj lub plawv dhia. Parasympathetic paj impulses tuaj raws Vagus paj hlwb qeeb lub plawv dhia. Adrenalin, noradrenaline nce lub plawv dhia. Dopamine nce lub plawv dhia, nrog rau lub zog ntawm contraction. Cov tshuaj tuaj yeem ua kom nrawm lossis ua kom lub plawv dhia qeeb. Dopamine, dobutamine, thiab adrenalin feem ntau yog siv los kho mob plawv. Atenolol, propranolol, thiab labetolol qeeb lub plawv.
Atrial Fibrillation yog dab tsi?
Nyob rau hauv atrial fibrillation ntau qhov chaw hauv txoj cai atrium ua raws li tus neeg mob pacemakers. Cov loci tso tawm haphazardly. Tus nqi tawm yog tsawg dua 200 neeg ntaus ib feeb. Yog li ntawd, AV node kis tag nrho cov impulses. Vim hais tias cov impulses ncav cuag lub ventricles irregularly, lub pulses yog irregular. Kab mob plawv, plawv tsis ua hauj lwm, cardiomyopathies, tshuaj, thiab hyperthyroidism yog ob peb paub ua rau atrial fibrillation. Atrial fibrillation ECG qhia tau hais tias lub plawv tsis sib xws ntawm cov kab nrib pleb. Txwv tsis pub, txoj kab yog qhov qub, thiab muaj P nthwv dej.
Cov tsos mob ntawm atrial fibrillation muaj xws li palpitations, kiv taub hau, thiab kev ua haujlwm tsis zoo. Kev tswj hwm tus nqi thiab tswj kev sib dhos nrog beta blockers thiab digoxin yog kev kho mob zoo rau atrial fibrillation. Atrial fibrillation ua rau tsis zoo ntawm txoj cai atrium. Qhov no stagnates cov ntshav nyob rau hauv txoj cai atrium. Stagnation ua rau cov ntshav txhaws. Cov hlab ntsha no tawg mus rau hauv me me thiab tua los thaiv cov hlab ntsha. Stroke, amorousis fugax, thiab retinal hemorrhages tuaj yeem tshwm sim vim cov emboli. (Koj kuj yuav xav nyeem qhov txawv ntawm Thrombosis thiab Embolism)
Atrial Flutter yog dab tsi?
Atrial flutter ua rau lub plawv dhia ceev ib ncig ntawm 200 neeg ntaus ib feeb. Vim qee qhov laj thawj SA node tua hluav taws ntawm qhov ceeb toom. Txawm hais tias tus nqi tso tawm siab tshaj 200 tus neeg ntaus ib feeb, lub sij hawm refractory tiv thaiv kev hloov pauv ntawm impulse. Atrial flutter ECG tsis muaj P nthwv dej. Lub hauv paus zoo li tus ntug ntawm lub saw (Saw hniav zoo li). Lub plawv cov leeg tau txais cov ntshav thaum lub sij hawm diastole. Lub plawv dhia nce siab thaum diastole luv, thiab cov ntshav myocardial poob qis. Cov tsos mob ntawm atrial flutter muaj xws li mob hauv siab, palpitations, thiab kiv taub hau. Digoxin yog ib qho kev kho mob zoo rau atrial flutter, ib yam nkaus.
Qhov txawv ntawm Atrial Fibrillation thiab Atrial Flutter yog dab tsi?
• Fibrillation muaj lub plawv dhia qeeb thaum flutter rate nyob ib ncig ntawm 200 neeg ntaus ib feeb.
• Fibrillation yog vim haphazardly tawm foci thiab flutter yog vim tawm sai ntawm SA node.
• Ob leeg ua rau palpitations, mob hauv siab, thiab kiv taub hau.
