I-Cardiotocography iyindlela yokurekhoda inhliziyo ye-fetal , kubaluleke kakhulu ekuhloleni okugcwele isimo sesimo senhliziyo nesimo esijwayelekile se-fetus. Indlela ye-CTG ayinabungozi ngokuphelele, ayinayo umthelela omubi kumntwana. Le nqubo isetshenziselwa isonto lama-26 lokukhulelwa, lapho ingane ikhula ibe usayizi okwanele ukulungisa emuva ngemuva kwenzwa yomsindo we-cardiac ngokusebenzisa udonga olungaphambili lwesisu. I-Cardiotocography iyadingeka ngesikhathi sokubeletha, uma kungadingeki kuphela ukukala izinga lokushaya kwenhliziyo, kodwa futhi ukucacisa ubukhulu bezinhlamvu zokubeletha. Esihlokweni sethu, sizocabangela ukuthi yini i-CTG ye-fetus okufanele ibe yinto evamile?
Izinkomba ze-CTG ye-fetus
Ubude benkambiso yimizuzu engaba ngu-40-60, lapho owesifazane eboshelwe khona inzwa yesisu, lapho umlenze ehlinzeka ngolwazi mayelana nokushaya kwenhliziyo kwe-fetus kanye ne-contraction ye-uterine. Imiphumela ye-CTG ye-fetus ingahunyushwa kanje:
- i-basal rhythm index ikhuluma ngenani eliphakathi kwenhliziyo yengane - umvuthwandaba we-basal rhythm ngokuvamile uvame ukushaya kwezingu-110-160 ngomzuzu, futhi uma uhamba noma ulwa, ukushaya okungu-130-190 ngomzuzu;
- ukuhluka kwesigqi senhliziyo yesisu kubonisa ukuphambuka kwentando yenhliziyo - ngendlela evamile izinga elivumelekile lokuphambuka akufanele lidlule u-5-25 ukushaya ngomzuzu;
- ukulahlwa noma ukuxoshwa ku-CTG kubonakala njengokunciphisa ukushaya kwenhliziyo, okuvela egrafu ngendlela yokuthunjwa - ngokujwayelekile kufanele kube yinto engacacile futhi emfushane;
- Ukusheshisa kwe-Fetal noma ukusheshisa kungukukhula kwenhliziyo, okuyi-cardiogram eqoshiwe ngendlela yamazinyo aphezulu - ngokuvamile kufanele okungenani kube nokusheshisa okungu-2 emaminithini angu-10;
- umsebenzi wesibeletho (i-tokogram) akumele ivame ukudlula u-15% wezinga lokushaya kwenhliziyo, isibonakaliso akumele sidlule amasekhondi angu-30.
I-fetal CTG - isibonakaliso sesimo se-Fetal
Ukuhlola i-cardiotocogram, isistimu eyi-10 isetshenziselwa ukuthi ichaze indlela echazwe ngenhla (imvamisa yesilinganiso se-basal, ukuhluka kwenhliziyo ye-fetal (inani lamagagasi nokuphakama kwayo), ukuxoshwa, ukusheshisa nokunyakaza komfutho). Ngakho-ke, ake sicabangele ukuthi yiliphi inani lamaphuzu ezilandelayo izimo ze-fetal ezihambisana nalokhu:
- isimo esanelisayo sihambisana ne-CTG ye-fetus amaphuzu angu-9-12;
- I-hypoxia ye-fetal ye- degree ephakathi ithola ukuthi inamaphuzu angama-6-8. Ezimweni ezinjalo, kunconywa ngokuqhubekayo nokuphindaphindiwe kwe-CTG;
- ukucindezeleka okukhulu komfutho kuvezwe amaphuzu angu-5 noma ngaphansi. I-CTG encane ye-fetus iyabonakala nge-oksijeni ebizwa ngokuthi yindlala futhi idinga ukulethwa ngokushesha.
Ukunqunywa kwenkomba yesimo se-fetal
I-cardiotocographs yanamuhla iyakwazi ukubala ngokuzenzakalelayo ukubaluleka kwe-bandwidth yememori. Ake sicabangele ukuthi singayichaza kanjani imiphumela:
- isimo esivamile se-fetus sifana ne-PSP kusuka ku-0.7 kuya ku-1.0;
- ukubonakaliswa kokuqala kwesimo se-fetus esithintekile kusho ukuthi izinkomba ze-PSP ziyi-1.01-2.0, ezimweni ezinjalo
Phakathi nesonto kubalulekile ukuphinda i-CTG; - isimo esibi se-fetus sitholakaliswa nge-PSP score of 2.01-3.0;
- isimo esibucayi se-fetus siqinisekiswa yi-PSP engaphezu kwama-3.0. Lesi sifo sidinga ukunakekelwa ngokushesha esibhedlela esibhedlela kanye nokuxazulula ukukhishwa kwezidingo.
Ngakho-ke, sihlolisise izici ze-cardiotocography kanye nezindlela zokuchazwa kwemiphumela. Ukushaya kwenhliziyo emntwaneni onomfutho wokuncipha kwezingu-110-160 ngomzuzu kubonisa ukuthi umntwana ulungile.