Yintoni i-pulmonary surfactant kwaye isebenza njani

Umxholo

• Imisebenzi ye-surfactant
• Yintoni ebangela ukunqongophala komzimba

I-pulmonary surfactant lulwelo oluveliswa ngumzimba olunomsebenzi wokuququzelela ukutshintshiselana kweegesi zokuphefumla emiphungeni. Isenzo sayo sivumela i-alveoli yemiphunga, eziziingxowa ezincinci ezinoxanduva lokutshintshiselana ngegesi, ukuba zihlale zivulekile ngexesha lokuphefumla, ngoxinzelelo, olwenza ukuba kungene ioksijini ekujikelezeni kwegazi.

Iintsana ezisandul 'ukuzalwa zisenokungabikho kwimveliso eyoneleyo yeplmonary surfactant yokuqinisekisa ukuphefumla okusebenzayo, ke ngoko, zinokuphuhlisa isifo sokubandezeleka sokuphefumla kosana, sibangele ubunzima obukhulu ekuphefumlweni.

Ngethamsanqa, likhona ichiza, eliyi-exogenous surfactant, elinganisa izinto zendalo zomzimba, kwaye inceda ukuphefumla komntwana de ibe nako ukuzenzela yedwa. Eli yeza linokuqhutywa kwiyure yokuqala emva kokuba umntwana ezelwe, ngenxa yesiphumo esikhawulezayo, ngombhobho ngqo emiphungeni.

Imisebenzi ye-surfactant

Umsebenzi ophambili we-pulmonary surfactant kukwenza umaleko wefilimu ovumela ukuvulwa okufanelekileyo kwe-alveoli yemiphunga kunye nokuvumela ukuphefumla, ngokwenza oku:

• Ukugcinwa kokuvulwa kwealveoli;
• Ukuncipha kwamandla ayimfuneko ekwandiseni imiphunga;
• Ukuzinzisa ubungakanani bealveoli.

Ngale ndlela, imiphunga ihlala isebenza kwaye iyakwazi ukwenza utshintshiselwano ngegesi ngokufanelekileyo.

Yintoni ebangela ukunqongophala komzimba

I-surfactant iveliswa ngexesha lokuvuthwa kwemiphunga yosana, isesesibelekweni sikanina, emva kweeveki ezingama-28. Ke ngoko, iintsana ezingekazalwa ezizalwe ngaphambi kweli xesha, zisenokungabikho kwimveliso eyaneleyo yale nto, ebangela ukuba usana lube nesifo sokuphefumla.

Esi sifo, esikwabizwa ngokuba yi-hyaline membrane syndrome okanye isifo sokuphefumla, sibangela ubunzima ekuphefumlweni, ukuphefumla ngokukhawuleza, ukuvutha kunye nemilebe eluhlaza okwesibhakabhaka kunye neminwe, enokubulala.

Kwezi meko, ugqirha wabantwana unokubonisa ithamo lomntwana oshushu osanda kuzalwa, onokuthi ube ngowendalo, ukhutshwe kwizilwanyana, okanye izinto zokwenziwa, ezinokuthi zithathe indawo yomsebenzi we-surfactant eveliswe kwimiphunga kwaye uvumele ukuphefumla ngokwaneleyo. Funda ngakumbi malunga neempawu kunye nendlela yokunyanga isifo sokuphefumla kwabantwana.