Yintoni omele uyazi malunga nale fomu eqhelekileyo ye-SVT
Abantu abafumana ama-episode ngokukhawuleza we- tachycardia (ixabiso lentliziyo ekhawulezayo), ngokuqhelekileyo banolunye lweentlobo ezininzi ze -tachycardia (SVT) . Igama elithi "SVT" liquka iindidi ezininzi zeemeyimu zomzimba eziqala ngokukhawuleza, kwaye zihlala zingasongela ubomi, kodwa oko kunokuphazamisa ubomi bakho.
I-Atrioventricular reentrant tachycardia (AVRT) yowesibili uhlobo oluqhelekileyo lwe-SVT, elimalunga ne-30% yazo zonke i-SVTs.
Yintoni i-AVRT?
I-AVRT luhlobo lwe- tachycardia ephindayo . Njengoko kunjalo nangama-SVTs onke abuyele, abantu abane-AVRT bazalwa benxibelelwano olungavamile kwintliziyo entliziyweni. Kwi-AVRT, uxhumano olongezelelweyo, oludla ngokuba luthi "indlela yokufikelela kuyo," ludibanisa uxhumano lwamandla phakathi kwelinye i-atria (amagumbi aphezulu entliziyo), kunye nelinye lamagumbi angaphantsi (amacumbi angaphantsi entliziyo).
Ngokuqhelekileyo, ukuxhamla kombane kuphela phakathi kwe-atria kunye ne-ventricle yindlela eqhelekileyo yokuqhuba i-cardiac, equkethe i- AV node kunye neNqwaba yakhe.
Ngoko, kubantu abane-AVRT, indlela yokufikelela kuyo inikeza uxhumano lwesibini lombane phakathi kwe-atria kunye neefriji. Olu dlelaniso lwesibini lubeka isiphaluka esinokuthi sisungule i-tachycardia ephindayo.
I-AVRT isebenza njani?
Kumntu onendlela yokufikelela kuyo, isiqendu se-AVRT sinokubangela ukubetha kwentliziyo ngaphambi kwexesha, okanye ukuphambaniswa kwe-anti-premature (PAC) okanye ukuphambana kwangaphambili kwe-ventricular (PVC) .
Ukubetha kwexesha elide, ukuba kwenzeka ngexesha elifanelekileyo, kunokubangela ukuqhuma kombane (okanye ukuphindaphinda).
Le ntshukumo ihamba ngeendlela eziqhelekileyo zokuqhuba i-ventricles, ize ibuye ibuyise indlela yokufikelela kwi-atria (oko kukuthi, "ingena" kwi-atrial), ize iphendukele ibuye iphinde iphinde iphinde iphinde iphinde ihlawule inkqubo eqhubayo, kunye njalo njalo.
Ngaloo ndlela, ibhondi enye ngaphambi kokusungula i-tachycardia ngokukhawuleza.
Iimpawu ze-AVRT zifana ne-SVT. Ngokuqhelekileyo ziquka iipilpitations , i- headhead , kunye ne- dizziness . Iziqhelo zihlala zihlala kumzuzu embalwa ukuya kwiiyure eziliqela.
I-AVRT ingayekelwa njani?
I-AVRT inokumiswa yi-PAC, i-PVC, okanye nje ngokunciphisa ukuqhutshwa kombane nge-AV node. Naliphi na le mimangalo inokuphazamisa impembelelo yokuphindaphinda.
Inyaniso yokuba ukunciphisa i-AV node conduction ingayeka i-AVRT inike umntu ngale ndlela yokumisela ithuba lokuyenza. Eli thuba lisebenzisa inzuzo yokuba i-AV node ifumaneka ngokucebile nge- vagus nererve . Ngoko, abantu abane-AVRT banako ukuyeka isiganeko esichukumisayo ngokuthatha inyathelo lokwandisa ithoni ye-vagus nerve. Oku kungenziwa, ngokomzekelo, ngokwenza uValsalva umqhubi , okanye ngokuzifaka ngobuso bakho emanzini emvula embalwa imizuzwana. (Umtshini weValsalva ukhawuleza, ulungele ngakumbi, kwaye ungathandeki kunokuba ubhekene namanzi.
AVRT kunye neWolff-Parkinson-White Syndrome
Kwamanye abantu abane-AVRT, indlela yokufikelela enokukwazi ukuqhuba iimpembelelo zombane kwinqanaba elithile (oko kukuthi, ukusuka kwi-atrium ukuya kwi-ventricle njengoko sele ichaziwe ngaphambili, okanye kwi-ventricle ukuya kwi-atrium). Kwabanye abantu, indlela yokufikelela ikwazi ukuqhuba iimpembelelo zombane kwicala elinye okanye enye.
Olu phawu luya kubaluleka. Kwinkoliso yabantu abane-AVRT, iimpembelelo ziyakwazi ukuwela ngaphaya kwendlela yokufikelela kwi-ventricle ukuya kwi-atrium.
Xa iinjongo zikwazi ukuwela ngaphesheya kolunye uhlangothi - ukusuka kwi-atrium ukuya kwi-ventricle - kuthiwa ikhona i -Wolff-Parkinson-White (WPW) .
I-WPW inxulumene neengxaki zekliniki ezithatha ngaphaya kwe "nje" AVRT, kwaye kufuneka ukuba iphathwe ngokugqithiseleyo.
Ukunyanga i-AVRT
Ukuba i-WPW ayikho kwaye iimpawu ze-AVRT aziqabile kwaye zimeke lula (zithi, ngokwenza u-Valsavla usebenze), ngokuthe rhoqo akukho nonyango imfuneko ngaphandle kokuba ufunde oko kufuneka ukwenze xa isiqhelo senzeke. Nangona kunjalo, ukuba unayo i-WPW, iziganeko eziqhelekileyo ze-SVT, ngokukodwa iimpawu ezinzima ngexesha lee-episodes, okanye unenkathazo yokuvimba iipasiti xa zivela, ke kufuneka kusetyenziswe unyango olungakumbi.
I-antiarrhythmic therapy yezilwanyana isoloko isebenza ngokukhawuleza ekukhuseleni iipasiti ze-AVRT. Nangona kunjalo, kubantu abaninzi abane-AVRT, unyango lwe-ablation luyakwazi ukulahla indlela yokufikelela kuyo, kwaye ukhusele ngokupheleleyo naziphi na iziqephu. Ngeendlela zanamhlanje, ukuphelisa iindlela zokufikelela kwiinkqubo zingenziwa ngokuphumelelayo nangokukhuselekileyo kwiimeko ezininzi.
ILizwi
I-Atrioventricular reentrant tachycardia (AVRT) yinto eqhelekileyo ye-SVT. Ngoxa ihlala ivelisa iimpawu ezibalulekileyo kwaye inokuphazamisa ubomi, i-AVRT namhlanje iyaphathwa kakhulu.
> Imithombo:
> Brembilla-Perrot B, Pauriah M, Sellal JM, et al. Isiganeko kunye nokuBaluleka kokuBaluleka kweTachycardia engavumelekiyo kunye ne-Anti -romromic. Europace 2013; 15: 871.
> Chugh A, Morady F. Atrioventricular > I-Reentry > kunye neeNguquli. Ku: I-Cardiac Electrophysiology ukusuka kwi-Cell ukuya kwiBhedge, I-5 Edition, > Iifayili DP, uJalife J. (Eds), uSaunders / Elsevier, Philadelphia 2009. p.605-614.