Atrioventricular misa

Zvemwoyo chirwere - dambudziko murume ano. Uye mumwe inonyanya mwoyo chirwere chidhina mwoyo. Hosha rinowanikwa mune kusagadzikana nomunhu kuna ventricles. Pakati akasiyana zvokurwara ichi secrete transverse (chinogumbura gungano Ashofa-Tawara) uye longitudinal, kana akaputswa vakabata pulses umwe makumbo mutundu wake.

Achitaura pamusoro blockade, zvinokosha kuziva wavawo ode kwavo nouchapupu siyana - kuzara pakukura. With kukwana AV nechigumbuso kusiyanisa pfungwa dzinotevera.

Atrioventricular misa wokutanga dhigirii kunhaka pulses umo akawanda kunonoka. On cardiogram akaratidza elongation penguva P-Q, kunoitika kakawanda.

Kana blockade chechipiri dhigirii, vamwe kupomba haina kugamuchira kubva atria kusvika ventricles. The ECG akapiwa mufananidzo anotarira akafanana mberi dzikawedzerwa kuti P-Q penguva pamwe nguva nenguva kurasikirwa ventricular yakaoma. Ipapo kutenderera anomutswa, uye slowdown kuti kuchengetwa zvakare.

Third dhigirii atrioventricular nechigumbuso dzinoratidzwa dzose atrial marwadzo kutenderera zvikamu uye nguva nenguva kunayisa pamusoro zvakaoma basa marwadzo ose ventricles. Mienzaniso blockage iri shoma ngozi achienzaniswa zvizere kunonoka pakati pulses.

Kana kuva wakakwana AV mufurati, nokupfuuridzirwa nomunhu kubva atria kusvika ventricles, uye kunyange hazviiti. Somugumisiro, mashoko ventricles kondirakiti yazvo mutinhimira. The ECG kunoratidzwa zvikuru isingawanzowanikwi maitikiro akaita ventricular zvivako uye chero urongwa hwavo, mavakanga ekupedzisira inogona seari pasi atrial.

Achitaura ari kurapwa kuratidzwa, zvinokosha kuziva kuti blockade rokutanga dhigirii (kukwana) iri dzakaonekwa chete panguva kwemwoyo unonzi, electrocardiograph. Auscultation kuona rekupedzisira rinenge zvisingabviri. Complete blockade akaora bradycardia, izvo haachinji kunyange pashure chiitwa. Kana auscultatory zviratidzo, zvino, nokuti zvakakwana AV chidhina, runowanzoitika vanonzi "pfuti Matauriro," kunoitika kana munhu-nguva rutapudzo pakati ventricles uye atria. Uyezve, kana kakawanda ikasawira ventricular matatu anorova zvishoma minutumogut vakachengeta mamirire kamwe kurasikirwa pfungwa, uyewo anyatsoona mwoyo kutadza, asingatani kunoita.

Atrioventricular misa anogona kuitika woga, nguva dzose pashure chero chirwere. Kazhinji kutungamirira ichi zvokurwara myocarditis (diphtheria kana RA), myocardial infarction uye coronary insufficiency.

Treatment blockades zvikurukuru sostredotocheny kugadzirisa zvinokonzera zvakazoita kuti chidzoke munhu pathological ezvinhu. Pakutanga, saka, akaitira yomwoyo, myocarditis nezvimwe zvirwere. Uyezve, vasiri kwazvo ezvinhu (kukwana blockade) anogona kuitwa zvinodhaka kurapa, iyo inoshandisa kazhinji cardiac glycosides.

Kana zvachose blockade bedzi nzira inoshanda, zvichiita kuti kudzorerwa kwomuzvarirwo kwemwoyo chinhu kuvhiyiwa kudyara chinodzora kurova (pacemaker). Zvinofanira kucherechedzwa kuti kunhaka izvozvo kuvhiyiwa nhasi yekudyidzana anovandudza mamiriro kuvarwere uye achawedzera hwavo.

Saka, arrhythmia uye mwoyo nechigumbuso ikozvino pane zvikuru zvakafanana uye zvinoda misoro uye kwazvo kurapwa, nokuti kutyora kwete chete kunokanganisa utano hwevanhu, asiwo nengozi hwake.