肺胞気動脈血酸素分圧較差
WordNet
- pertaining to the tiny air sacs of the lungs
- pertaining to the sockets of the teeth or that part of the upper jaw; "alveolar processes"
- a significant change; "the difference in her is amazing"; "his support made a real difference"
- the quality of being unlike or dissimilar; "there are many differences between jazz and rock"
- a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earths crust (同)O, atomic number 8
- of or involving or contained in the arteries; "arterial disease"; "the arterial system"; "arterial blood"
PrepTutorEJDIC
- 歯茎音の(舌先を上歯茎にふれて発音する) / 肺胞の;歯槽(しそう)の / 歯茎音
- 『違い』,『相違点』,意見などの食い違い / 『差』,差額
- 『酸素』(化学記号はO)
- 動脈の,動脈状の / 動脈血の / 幹線の
UpToDate Contents
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English Journal
- Increased blood-oxygen binding affinity in Tibetan and Han Chinese residents at 4200 m.
- Simonson TS1, Wei G2, Wagner HE3, Wuren T2, Bui A3, Fine JM3, Qin G2, Beltrami FG4, Yan M2, Wagner PD3, Ge RL2.
- Experimental physiology.Exp Physiol.2014 Aug 28. [Epub ahead of print]
- High-altitude natives are challenged by hypoxia and a potential compensation could be reduced blood P50, as seen in several high-altitude mammalian species. In 21 Qinghai Tibetan males and 9 Han Chinese, all resident at 4200 m, standard P50 was calculated from measurements of arterial PO2 and forehe
- PMID 25172885
- [Effect of verapamil and nitroglycerin on transplanted lung function in canines].
- Jiang Z1, Hu P, Liu J, Wang D, Jin L, Hong C.
- Zhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences.Zhong Nan Da Xue Xue Bao Yi Xue Ban.2014 Aug;39(8):802-6. doi: 10.3969/j.issn.1672-7347.2014.08.008.
- OBJECTIVE: To investigate the protective effect of combined administration of verapamil and nitroglycerin on the function of canine transplanted lungs.METHODS: Twenty orthotopic left lung transplantations were performed in 40 canines, which were randomly divided into 4 groups. In group I (control),
- PMID 25202948
- Gas exchange and ventilation-perfusion relationships in the lung.
- Petersson J1, Glenny RW2.
- The European respiratory journal.Eur Respir J.2014 Jul 25. pii: erj00370-2014. [Epub ahead of print]
- This review provides an overview of the relationship between ventilation/perfusion ratios and gas exchange in the lung, emphasising basic concepts and relating them to clinical scenarios. For each gas exchanging unit, the alveolar and effluent blood partial pressures of oxygen and carbon dioxide (PO
- PMID 25063240
Japanese Journal
- Arterial blood gas anomaly in canine hepatobiliary disease
- Impaired endothelium-dependent vasodilator response in patients with pulmonary fibrosis.
- メデトミジンとミダゾラムを麻酔前投与しイソフルランで麻酔維持した犬における人工呼吸のPaO_2/FIO_2およびP (A-a) O_2に対する影響
- 動物臨床医学 = Journal of Animal Clinical Research Foundation 19(4), 107-112, 2010-12-31
- NAID 10027807051
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- Medical Dictionary alveolar-arterial oxygen difference n. The difference or gradient between the partial pressure of oxygen in the alveolar spaces and the arterial blood. The American Heritage® Stedman's Medical Dictionary
★リンクテーブル★
[★]
- 英
- alveolar-arterial oxygen difference, A-aDO2, AaDO2, A-a Do2, A-aDo2, AaDo2, a-ADO2
- 同
- 肺胞気-動脈血酸素分圧較差、A-a gradient?、alveolar-arterial oxygen gradient?
- 関
- 呼吸不全
意義
定義
考え方
- 吸気したO2は肺胞に留まる分(PAO2)と肺血管に移行した分に分けられる。
- 肺血管に移行した分 と 末梢で消費されずに残ったO2がPaO2として検出されるので、PaO2は使えない。
- O2を消費して排出されたCO2の動脈血濃度を用いて、肺血管に移行した分を算出する。
- 従って、
-
- PIO2:吸気酸素分圧。FIO2:吸気酸素比率、R:呼吸商(0.8)
- AP:大気圧(760torr)、47:水蒸気分圧(37℃)、FIO2:吸気酸素濃度
-
-
- A-aDO2 = PAO2 - PaO2 = 150 - PaCO2/ 0.8 (torr) - PaO2
基準値
- 20 Torr以下
- 15 Torr以下(YN.I-24)
肺胞気動脈血酸素分圧較差(A-aDO2)の開大
- YN.I-24
-
- 肺胞死腔が多くなると最初はCO2の排出が低下し、やがてO2の摂取も低下する。
- VA/Qが大きい → 血流のない肺胞の増加:VA >>>> Q
- 局所的な二酸化炭素の排出は十分に行われるが、肺全体としては換気が有効利用されないことを示す。
- シャント:VA/Q=0
- VA/Qが小さい → 換気のない肺胞の増加:Q >>>> VA
- O2の摂取が低下する。肺全体として見るとSaO2が低下する
[★]
- 関
- alveoli、alveolus、pulmonary alveoli、pulmonary alveolus、tooth socket
[★]
- 関
- disagreement、discrepant、disparity、distinction、divergence、variation
[★]
- 関
- arteriosus、artery