Anastomosis inoreva kutaurirana pakati petsinga dzinoverengeka, kana tsinga dzinoverengeka dzeropa, kana zvakare pakati pemidziyo yakawanda yeLymphatic. Vanobvumira, kana nzira huru yemitsipa yeropa yakavharwa, kupa nzira dzechipiri dzekufamba kweropa. Basa rayo nderekuwedzera kutenderera, ichigadzira nzira nyowani inonzi yekutenderera kwekutenderera. Izvi zvinoita kuti zvikwanisike kuve nekudiridza kwenhengo, apo nzira huru yekutenderera kweropa isisashande.

Tsanangudzo yeanastomosis

Anastomosis inoreva zvikamu zvemuviri izvo zvinobvumidza kutaurirana pakati petsinga dzinoverengeka, tsinga dzinoverengeka dzeropa, kana kunyangwe mitsara yakawanda yeLymphatic. Ivo vanoita kuti zvikwanisike, mune kesi yemidziyo yeropa, kupa kutenderera kweropa nzira yechipiri yekudiridza nhengo, nekukurumidza kana paine kutadziswa kwenzira huru. Nekuwedzera, isu tinogona zvakare kutaura kuti anastomosis ndiko kubatana pakati penzira mbiri dzetsika imwechete, ndiko kuti, pakati pezvimiro zviviri zvine tubular zvine basa rakafanana.

Iko anastomoses iri kupi?

Tsinga dzinoverengeka dzinopa akawanda enyama. Kana matavi eimwe kana yakawanda tsinga dzikaungana, dzinoita iyo inonzi anastomosis. Aya anastomoses anogona, nekudaro, kuwanikwa munzvimbo zhinji dzemuviri, uye vane chimiro chakafanana neicho chemidziyo yeropa kana mapaipi avanobatanidza.

Chii chinonzi anastomosis chakagadzirwa?

Nekudaro, maanastomoses aya ane bumbiro rakafanana nemidziyo yeropa, kana tsinga, kana mitsipa yeLymphatic iyo yavanobatana pamwechete: iwo mapaipi kana makondoni, saka anoumbwa nechiedza, kureva gomba rinotenderera mvura (senge ropa kana lymph. ), uye nemasero anoikomberedza, kunyanya, kune tsinga dzeropa, madziro akaumbwa nemasero anonzi endothelial, akanyatsotsetseka.

Zvakare, capillary yeropa inoumbwa nezvikamu zvitatu:

• iyo capillary loop, inoshandiswa kuchinjanisa metabolic;
• metarteriole (chikamu chekupedzisira chearteriole, kana tsinga diki), kuve nechokwadi chekudzoka kweropa rinotyisa;
• uye anastomosis, iyo inopeta iyi metarteriole, uye inovhura chete pazvinenge zvichidikanwa.

Iko kune zvakare maitiro eanastomoses padanho rehuropi: iyi ndiyo Willis polygon.

Izvo zvakare zvinokwanisika kuita anastomoses ekuvhiya, izvi zvinonyanya kuitika necolostomy, iyo inobvumira iyo colon kusvika padumbu.

Dzimwe nzira dzekudiridza nyama

Basa re arterial anastomoses kugadzira dzimwe nzira, nekudaro kutsiva arteri kana aya akavharika. Ivo vanobva vaita kuti zvikwanise kuchengetedza kudiridza kwetishu.

Nekudaro, zvikonzero zvinoverengeka zvinogona kumisa kuyerera kweropa kwenguva pfupi, semuenzaniso:

• panguva yekufamba kwakaringana kumanikidza ngarava;
• kana tsinga yeropa yakavharwa, nekuda kwekurwara kana kukuvara, kana panguva yekuvhiyiwa.

Traffic haidi kuti idimburwe, chaizvo tichitenda idzi nzira dzinotsiva, idzo dzinova nzira dzemigwagwa yemigwagwa.

Polygon yaWillis: vascularization yeuropi

Iyo Willis polygon inosimbisa iyo vascularization yehuropi. Izvo ndezve arterial denderedzwa iri pazasi pehuropi, uye zvakare iri anastomotic system, saka yekutsiva. Naizvozvo, inopa ropa kuuropi kunyangwe imwe yetsinga dziri muuropi dzakakuvara kana kuvharika.

Arteri isina anastomoses: iyo yekupedzisira arteri

Kune tsinga dzisina anastomoses: dzinodaidzwa dzinoti terminal arteri. Muchokwadi, hachisi chirwere kana anomaly. Nekudaro, kana kutenderera kwetsinga idzi pasina anastomosis kwadzivirirwa, kudiridza kwechikamu chese nhengo kunobva kwamiswa zvachose, izvo zvinokonzeresa necrosis yayo, ndiko kuti kufa kwerutivi rweichi nhengo. Dzimwe nguva, kutenderera kwechibatiso kunogona zvakare kupfuura nemumidziyo yekupedzisira inopa ichi chikamu chemuviri.

Kukanganiswa anévrysmales

Iyo Willis polygon ndiyo chigaro, kazhinji kacho, aneurysm malformations, kureva anastomosis anomalies, ayo ari kuwedzererwa achigadzira marudzi emabhaluni, homwe dzeropa, ayo ari mukati mehuropi hwetsinga, kunyanya padanho kubva kubazi ravo. Iyo aneurysm inokanganisa 1 kusvika ku4% yehuwandu hwevanhu, njodzi yekutsemuka yakadzika kwazvo asi chiitiko chakakomba kwazvo, chinogona kuuraya.

Padanho rekupindira, anastomoses inogona kuitiswa nehunyanzvi hwekuvhiya, iri kunyanya nyaya yeanastomosis pakati pekoloni nedumbu, inonzi colostomy, inoitiswa semuenzaniso kana chiitiko checrosis pazinga re ura, kana iyo yeanastomosis pakati pezvikamu zviviri zvematumbo, mushure mekudzoreredzwa (ablation) yeiyo necrotic chikamu chemuura, kazhinji kazhinji ichitevera mesenteric infarction inokonzeresa necrosis, kana bundu.

Angiography ndiyo x-ray bvunzo iyo inokutendera iwe kufungidzira iyo yeropa tsinga. Inoitwa nachiremba radiologist kana angiologist, inobvumidza kuwanikwa kwekufamba kweropa kusagadzikana. Kuongorora uku kunoita kuti zvikwanisike kuwana mifananidzo yetsinga dzeropa idzo dzaisazoonekwa paX-ray yakapusa. 

• Izvo zviri nani vascularization anomalies mukati mavo anozotsvakwa (semuenzaniso, anomalies padanho reiyo coronary arteri, kana padanho rehutachiona veneti yemakumbo) kupfuura iwo eanastomoses ivo pachavo, ayo anowanzo kubhadhara izvi zvisakanaka yemakumbo. kudiridza kwetishu.
• Aneurysm kusagadzikana kunogona zvakare kuwanikwa, kunyanya neMRI. Ruzivo rwakanaka rwevascularization yehuropi inobvumidzwa nekuda kwekufambira mberi kwekufungidzira, senge arteriography, MRI nekudaro, kana kunyangwe computed tomography (scanner), iine kana isina jekiseni rechinhu chakasiyana.