Ibloko atrioventricular

isifo sentliziyo - sisibetho yomntu mihla. Ke kaloku omnye nesifo sentliziyo iqhelekileyo a block intliziyo. Isifo kwenzeka ukuphazamiseka neemvakalelo ukuya ventricles. Phakathi iintlobo le kwezimilo cell ezinqamlezayo (block indibano Ashofa-Tawara) kunye longitudinal, xa uyaphule pulses ubambe ngenxa omnye imilenze umgodlo wakhe.

Ethetha ukuqapha, kubalulekile ukukhumbula kananjalo ode ukuba iintlobo ngeentlobo zazo enkulu - ukuphelela lophuhliso. Nge AV ibloko engaphelelanga umahluko phakathi kwezi zenzeko zilandelayo.

ibloko Atrioventricular pulses zime isidanga sokuqala apho eziliqela libaziseko. On cardiogram wabonisa zobude lokuphumla P-Q, kwenzeka qho.

Xa kuvalwe iindlela isidanga sesibini, ezinye ubume ayikho ezivela imithambo ukuya ventricles. I-ECG zokulinganiselaezisemfanekisweni ikhangeleka ngathi kungoluka okuqhubekayo P-Q lokuphumla kunye nokulahlekelwa ngamaxesha ventricular ezintsonkothileyo. Ngoko ke mjikelo kwakhona, kunye nokwehla ka waphawula kwakhona.

Okwesithathu isidanga ibloko atrioventricular iphawulwa amathuba umjikelo ucutheko atrial eziqhelekileyo kunye imvula ngamaxesha le entsonkothileyo onoxanduva ucutheko le ventricles. ukuvaleka Partial ingaphantsi kuyingozi xa kuthelekiswa ukulibaziseka ngokupheleleyo pulses.

Xa ekuphuhliseni ngokupheleleyo ibhloko AV, ukosuleleka neemvakalelo ukusuka imithambo ukuya ventricles, kwaye akunakwenzeka. Ngenxa yoko, isivumelwano ventricles kwi nesingqisho yayo. Le ECG kubonakala rhoqo more ngokwakha izakhiwo ventricular kunye nelungiselelo zabo random, apho lo wokugqibela kufuneka lwenziwe kwi atrial.

Ethetha wabonakala unyango, kubalulekile ukukhumbula ukuba kuvalwe iindlela zesidanga sokuqala (partial) eshiyekileyo ifunyanwa kuphela ngexesha electrocardiogram. Auscultation limisele wokugqibela phantse nzima. Zalisa ukuvimba bradycardia ngokwezonyango, engaquki ukutshintsha nasemva kokuba msebenzi. Wona ke imiqondiso auscultatory, ngoko, ukuba epheleleyo AV block, lifana babizwa ngokuba "ithoni gun," nto leyo yenzeka xa ngexesha elinye-nokuncitshiswa ventricles kunye nomthambo. Ukongeza, xa rhoqo iwela ezingamashumi amathathu ibetha ventricular kunye minutumogut ngaphantsi waphawula uphawu ilahleko ngesiquphe osezingqondweni, kwakunye esiphawuliweyo ukusilela intliziyo, ekuthanda ukuya phambili.

ibloko Atrioventricular inokwenzeka iyodwa, usoloko landulelwa nasiphi na isifo. Kaninzi ezikhokelela kwesi myocarditis ngezifo (ukubola komqala okanye samathambo), iposi engabalulekanga kunye insufficiency sentliziyo.

ekuvaleni Treatment kuqala sostredotocheny ukuba alungise oonobangela ezakhokelela ukuvela imeko zophendlo lwezifo. Ekuqaleni, ke ngoko, liphathwe isifo sentliziyo, myocarditis kunye nezinye izifo. Ngaphezu koko, ngokuba iimeko non-kakhulu (kwafa ayiphelelanga) lungaqhutywa unyango ngamachiza, leyo usebenzisa glycosides kakhulu inhliziyo.

Xa ukuvimba lilonke indlela ephumelelayo kuphela, ekhokelela nokubuyiselwa izinga lentliziyo oluqhelekileyo usebenzela ukuba ukutyala ipacemaker (pacemaker). Kufuneka kuqatshelwe ukuba usindleko msebenzi namhlanje iphucula kakhulu imeko zezigulane uyolule ubomi babo.

Ngenxa yoko, arrhythmia kunye nentliziyo block kukho sele kuyinto eqhelekileyo yaye zifuna unyango ebanzi ngokucokisekileyo, kuba waphula umthetho nje ngokonakalisa impilo yabantu, kodwa ingxaki enkulu ebomini bakhe.