Ama-anomalies of labor abizwa ngokuthi ukuphulwa emisebenzini yezivumelwano zesibindi. Lokhu kuholela ekuphambanweni ezindleleni zokuvulwa komlomo wesibeletho kanye nokuhamba kwe-fetus ngokusebenzisa i-canal yokuzalwa. Izizathu zokwelapha okunjalo zingase zibe izinguquko ezinkomba ezifana nezwi lesikhumba, ubude besikhathi, isikhathi, amandla, imvamisa, isigqi kanye nokuhlanganiswa kwezingqinamba.
Ukuphulwa kweziqalo. Isikhathi sokulungiselela, lapho kuvezwa izandulela zemisebenzi, kuvame ukudlulela emaqenjini, okulandelwa ukuzalwa. Ngokuvamile izandulela zigcina cishe amahora angu-6 futhi kancane kancane ziya ezithombeni ezivamile. Endabeni yokwephulwa kokuqala, izimpawu ezithile zivela. Zingavamile ngokwemvamisa, amandla kanye nobude bezinhlungu zomzimba ezithombeni esiswini esingaphansi, eduze kwesigqoko ne-sacrum. Ubuhlungu obunjalo bungadlula amahora angaphezu kwangu-6. Kanye nabo, isigqi sosuku lokuvuka nokulala siphazamiseka, okuholela ekukhatheni kowesifazane. Isithombe sesitholampilo sihambisana nezwi elikhulayo lesibindi, indawo ephezulu yesitho esivela emntwaneni, isisu somlomo wesibeletho "esingafaki". Naphezu kokulwa, akukho dynamics ekuvuleni umlomo wesibeletho.
Umsebenzi obuthakathaka womsebenzi (inertia kwesibeletho, ukungazenzisi) kuqukethe amandla aphansi, imvamisa kanye nobude bokuphambana. Lokhu kubangela ukuphuza kancane komlomo wesibeletho, ukuvulwa okubuthakathaka komsele womlomo wesibeletho kanye nokuhamba komntwana. Ubuthakathaka bomsebenzi buyisisekelo nesekondari. Ngakho ubuthakathaka obukhulu buvela kusukela ekuqaleni kokubeletha futhi kuhlala kuze kube sekupheleni. Futhi eyesibili ithatha umsebenzi ojwayelekile wokukhiqiza. Ukuvama kokwenzeka komsebenzi omnene kunani labantu labama-parturients kungu-5-6%.
Umsebenzi oqedile ngokweqile uvame ukwesaba abesifazane besabekayo nabangacabangeli kalula. Kucatshangwa ukuthi kubangelwa ukuphulwa komthethonqubo we-cortico-visceral kanye nokuhlanganiswa kwezidakamizwa ezithintekayo ezinxenyeni eziphakeme (i-acetylcholine, i-oxytocin, i-prostaglandin, njll). Ukuxilongwa komsebenzi wokuqashwa ngokweqile kusekwe ngesisekelo sokusebenza okusheshayo nokuzumayo. Kuboniswe emigqonyeni enobudlova, elandelana ngezikhathi ezincane futhi kubangele ukuvula ngokushesha kwesibeletho sesisu. Kulesi simo, ukubeletha kubizwa ngokuthi i-impetuous, njengoba kudlula phakathi kwamahora angu-1-3. Ukuzalwa okusheshayo kuyingozi empilweni yabesifazane nezingane. Ngokuvamile ziphela ngamaphutha asemaphandleni, i-cervix, i-perineum, i-clitoris. Kukhona ingozi ephezulu yokuphazamiseka kwe-placental ngaphambi kwesikhathi. I-fetus ngokuvamile ihlangabezana ne-intrauterine hypoxia futhi ithola ukuhlukunyezwa kokubeletha. Kunezimo eziningi lapho ukuzalwa okusheshayo kwenzeke ngokuqondile emgwaqweni noma ekuthuthweni.
Umsebenzi wokusebenza ongasebenzi . Lezi zifo zihlobene nokuntuleka kweziphazamiso ezihlanganisiwe zezingxenye ezehlukene zesisu. Ukuphazanyiswa kubonakala phakathi kwezingxenye ezingezansi kwesokunxele nangakwesokudla kwesibeletho, izingxenye zayo ezingenhla nezingezansi, phakathi kwezinye izingxenye zesisu. Ukungaboni kahle kwemvelo kubonakala ngogciwane oluphezulu lwebele, ukuphazamiseka okuphazamisayo, ukuphazamiseka kwemisipha yomjikelezo wesibeletho. Ngalesi sivumelwano sokukhubazeka sibe yinto engavamile, ebuhlungu. Owesifazane uzwa ubuhlungu obunzima emhlane nangaphansi kwesisu. Ukuhlukaniswa kwesibeletho kubonisa ukungezwani kwemisipha engalingani ezingxenyeni zayo ezihlukahlukene. Ukutadisha umsebenzi we-contractile wesibeletho ekurekhodweni kwamanethiwekhi kunquma ukuthi i-arrhythmia kanye ne-asynchrony yezinkinga eminyangweni ehlukahlukene. Ngokujwayelekile kukhona ukulwa okuhlukene nobukhulu obuhlukene, lesi sibeletho sinethoni ekhuphukile, umlomo wesibeletho uvame ukuthi "ungagcini", ukuvula kuyashesha. Ingxenye esele ikhona yintsana ihlala iselula isikhathi eside noma icindezelwe ukungena emgodleni omncane. Ngemva kwesikhathi esithile, lo wesifazane ukhathele, ukubeletha kwehla noma kume ngokuphelele. Ngenxa yokwephulwa kwe-uterine-placental circulation, ngokuvamile i-hypoxia ye-fetal ibonakala. Izikhathi zangemva kokuqala nezokuqala zokubeletha zigcwele ukuphuma kwegazi.