Ihlola Impact ye-CO2 Ngezifo Ezivimbela Izifo
Uma une- COPD , udokotela wakho angase afune ukwazi ukuthi ukucindezela kwakho okukodwa kwezinga le-carbon dioxide (PaCO2) kuyini. I-PaCO2 ingenye yezivivinyo eziningana ezazisetshenziselwa ukukala igazi elibhebhethekayo kubantu abaphethe izifo zamaphaphu nezinye izifo. Ihlola indlela ikhabhoni dioxide (CO2) ehamba ngayo kusukela emaphashini eya egazini.
I-PaCO2 ingenye yezinto ezilinganiselwe ekuhlolweni kwegazi lokugaya (ABG).
Ibuye ihlole ukucindezela okuyingxenye ye-oxygen (PaO2), i-bicarbonate (i-HCO3), nezinga le-pH yegazi.
Kungani Ukulinganisa i-PaCO2 Kubalulekile
Njalo uma sivutha, i-oksijeni ihanjiswa emaphashini futhi ihanjiswa e- alveoli . I-Alveoli yilapho ukudluliselwa kwe-oksijini engena egazini nasekhabheni dioxide ephuma egazini.
Uma ukucindezela okuyingxenye ye-oksijeni ne-carbon dioxide kuvamile, ama-molecule azohamba avela e-alveoli angene egazini nasemhlane njengoba kufanele. Izinguquko kulolo cindezela zingabangela ukuthola oksijini encane kakhulu egazini noma ukuqoqa i-carbon dioxide kakhulu egazini. Futhi akubhekwa njengokuhle.
Ukuba ne-carbon dioxide kakhulu kubizwa ngokuthi i- hypercapnia , isimo esivamile kubantu abano-COPD esiseduze. I-CO2 encane kakhulu ingaholela ku- alkalosis , isimo lapho unezinsika eziningi kakhulu egazini lakho (i-CO2 i-asidi).
Okubangela Izinguquko ku-PaCO2
Kunezici eziningi ezingathinta amazinga egazi legazi.
Kusukela ebusweni obanzi, izinguquko ezingcindezini zomoya (njengokukhuphuka kwentaba, ukuhamba nge-scuba, noma ngisho nokuhlala ezindizeni zokuhweba) zingabangela ingcindezi emzimbeni ongashintsha ukuthi kahle kangakanani noma kabi igazi lisuka emapapheni kuya kuma-capillaries nangemuva .
Izifo zingasebenza ngendlela efanayo, ukuguqula ukucindezela okuyingxenye eqinisekisa ukuhanjiswa okulinganayo kwama-molecule e-CO2.
Izimo eziningana zingashintsha la mazinga:
- izifo zamaphaphu ezivimbelayo ezifana ne-COPD ne- asthma
- isisindo esimaphakathi sezinzwa (okubandakanya ukulimala kwekhanda nokusetshenziswa kwezidakamizwa)
- isifo se-neuromuscular efana ne- ALS
- ukuhlushwa okuphansi kwe-hemoglobin okusetshenziselwa ukuthutha umoya-mpilo ne-carbon dioxide ngegazi
Amazinga ajwayelekile futhi angavamile we-PaCO2
Uhlolo lwe-ABG luvame ukusebenza emthini we-radial esikhwameni noma emthonjeni wesifazane e-groin. Ngokuvamile kuyinkambinkimbi engaqondakali kodwa kungaba buhlungu ukuthi imithambo yegazi iyatholakala kakhulu emzimbeni kunemivimbi. Ukuvuvukala nokulimala ngezinye izikhathi kungenzeka.
Uhlobo oluvamile lokucindezela okuyingxenye ye-carbon dioxide luphakathi kuka-40 no-45 mm Hg. Uma iphakeme kune-45 mm Hg, usuke une-carbon dioxide kakhulu egazini lakho. Ngaphansi kuka-40 mm Hg, futhi uncane kakhulu.
Amazinga we-CO2 aphakeme avame ukubonwa ezimweni ze:
- isifo sengculazi esivimbelayo
- ukuhlanza okukhulu
- ukusetshenziswa ngokweqile kwe- diuretics -based diuretics
- i-aldosteronism (uhlobo lwe-hormonal disorder eyenza ukucindezelwa kwegazi eliphezulu)
Ngokuphambene, ukwehla kwe-CO2 kubonakala njalo nge:
- izinso ezingasebenzi noma ukwehluleka
- isifo sohudo oluqinile
- i-anorexia / indlala
- ukusetshenziswa ngokweqile kwe-chlorothiazide diuretics (esetshenziselwa ukunciphisa ingozi yokushaya isifo kanye nenhlekelele yokuhlasela inhliziyo)
- isifo sikashukela e-asidi
Ukubaluleka Kokucindezelwa Okubalulekile Kwe-Carbon Dioxide ku-COPD
I-carbon dioxide isilingana ne-bicarbonate (i-HCO3) egazini. Lapho i-CO2 iphakanyisiwe, yakha imvelo enamandla. Kubantu abaneCOPD abanezinkinga ezinkulu zokuphefumula, izinga le-CO2 elikhulayo lingabangela lokho esikubiza ngokuthi ukuphefumula kwe-acidosis . Uma lokhu kwenzeka ekupheleni kwe-COPD (uma umuntu ehlupha kakhulu imisipha yokuphefumula), isimo singabangela ukwehluleka ukuphefumula.
Imithombo:
> Abdo, W. noHeunks, L. "I-Hypercapnia e-oksijeni-ebizwa nge-COPD: Izinkolelo namaqiniso." Ukunakekelwa Okubalulekile . 2012. 16 (5): 323.
> I-Library Kazwelonke Kazwelonke Yezokwelapha. I-Medline Plus. "Amagesi Igazi." I-MedLine Plus. I-Bethesda, e-Maryland; Kubuyekezwe u-Agasti 25, 2014.