Ukuphonononga Impembelelo ye-CO2 kwiZifo zokuLungisa izifo
Ukuba unayo i- COPD , ugqirha wakho angathanda ukwazi ukuba unyanzeliso olunjani lwe-carbon dioxide (PaCO2). I-PaCO2 yenye yeemvavanyo eziliqela ezisetyenziselwa ukulinganisa igazi elichaphazelekayo kubantu abanesifo somphunga kunye nezinye izifo. Ihlola indlela i-carbon dioxide (CO2) ihamba ngayo kwimiphunga ibe ngegazi.
I-PaCO2 yinto eyodwa kuphela yezinto ezilinganiswe kwiimvavanyo zegazi (ABG).
Ikwavavanya uxinzelelo oluthile lwe-oksijini (PaO2), i-bicarbonate (HCO3), kunye ne-pH yegazi.
Kutheni ukulinganisa i-PaCO2 Kubalulekile
Njalo xa sisiphazamisa, i-oksijeni ifakwe emiphakeni kwaye ihanjiswa kwi- alveoli . I-Alveoli yilapho ukudluliselwa kwe-oksijini egazini kunye necarbon dioxide ephuma egazini.
Ukuba uxinzelelo oluthile lwe-oksijini kunye ne-carbon dioxide luqhelekile, iamolekyu ziya kuphuma kwi-alveoli ibe ngegazi nangemuva njengoko kufanele. Utshintsho kuloo ngcinezelo lunokubangela ukufumana i-oxygen encinci kwigazi okanye ukuqokelela i-carbon dioxide egazini. Akukho nto ithathwa njengento elungileyo.
Ukuba ne-carbon dioxide kakhulu ibizwa ngokuba yi- hypercapnia , imeko eqhelekileyo kubantu abaneCOPD. I-CO2 encinci ingakhokelela ekubeni i- alkalosis , imeko apho unamaziko amaninzi kwigazi lakho (i-CO2 i-asidi).
Yintoni ebangela iinguqu kwiPCO2
Kukho inani lezinto ezinokuchaphazela amanqanaba egesi egazi.
Ukususela kumbono obanzi, utshintsho kwingcinezelo yemozulu (njengokunyuka kwentaba, ukuhamba nge-scuba, okanye ukuhlala kwintengiso) kungenza uxinzelelo emzimbeni onokutshintsha indlela okanye kakuhle igazi elihamba ngayo ukusuka kumaphaphu ukuya kuma-capillaries nasemva .
Izifo zingasebenza ngendlela efanayo, ukuguqula uxinzelelo oluthile oluqinisekisa ukuhanjiswa okulinganayo kwama-molecules e-CO2.
Imiqathango emininzi ingakwazi ukuguqula la manqanaba:
- izifo zomngcipheko eziphazamisayo ezifana neCOPD kunye ne- asthma
- Inkqubo yesiseko senzwa yomnyo (kuquka ukulimala kwentloko kunye nokusetyenziswa kweziyobisi)
- isifo se-neuromuscular ezifana ne- ALS
- Ukuxinwa kwe-hemoglobin esetyenziselwa ukuthutha i-oxygen ne-carbon dioxide ngegazi
Amanqanaba aqhelekileyo kunye neePaC2 ezingavumelekanga
Uvavanyo lwe-ABG luvame ukuqhutyelwa kwi-artificial radiation kwisikristsi okanye umthambo wesifazane kwi-groin. Ngokuqhelekileyo yinkqubo engaxakekanga kodwa ingaba bubuhlungu kunikezwa ukuba iirriyiti ziphantsi kakhulu emzimbeni kunamava. Ukukhulelwa kunye nokutyumla ngezinye izihlandlo kunokwenzeka.
Uhlobo oluqhelekileyo lokuxinzelelo oluthile lwe-carbon dioxide luphakathi ko-40 no-45 mm Hg. Ukuba iphezulu kune-45 mm Hg, unako i-carbon dioxide kakhulu kwigazi lakho. Ngaphantsi kwe-40 mm Hg, kwaye unako kakhulu.
Amanqanaba e-CO2 aphakamileyo abonakala ngokubanzi kwiimeko:
- isifo somngcipheko
- ukuhlanza okukhulu
- ukusetyenziswa kakubi kwe-mercury-based diuretics
- i-aldosteronism (uhlobo lwesifo se-hormonal esibangela uxinzelelo lwegazi oluphezulu)
Ngokwahlukileyo, ukwehla kwe CO2 kudla ngokubonwa nge:
- isifo sokukhubazeka okanye ukungaphumeleli
- isifo sohudo
- i-anorexia / indlala
- ukusetyenziswa ngokweqile kwe-chlorothiazide diuretics (esetyenziselwa ukunciphisa ingozi yesifo kunye nesifo senhliziyo)
- isifo sikasifo sikashukela
Kubaluleka koxinzelelo oluthile lweCarbon Dioxide kwiCOPD
I-carbon dioxide inomlinganiso kunye ne-bicarbonate (HCO3) egazini. Xa i-CO2 iphakanyisiwe, yakha imo esebenzayo. Kubantu abaneCOPD abaneengxaki eziphambili zokuphefumla, inqanaba le-CO2 elikhulayo linokuphumela ekubeni sibiza ngokuba yi- acidosis yokuphefumula . Xa oku kwenzeka kwi -COPD yexesha elidlulileyo (xa umntu ebenobuthathaka kakhulu imisipha yokuphefumula), loo mqathango ingakhokelela ekuphelelweni kokuphefumula.
Imithombo:
> Abdo, W. kunye no-Heunks, L. "I-Oxygen-Hypercapnia eyenziwe kwiCOPD: Iingoma kunye neenyaniso." Unonophelo oluBalulekileyo . 2012. 16 (5): 323.
> Ilayibrari yeSizwe ka-US yamayeza. Medline Plus. "Igazi leGesi." MedLine Plus. EBethesda, eMaryn; Ukuhlaziywa kwe-Agasti 25, 2014.