混合静脈血酸素飽和度
WordNet
- combine (electronic signals); "mixing sounds"
- add as an additional element or part; "mix water into the drink" (同)mix in
- the act of mixing together; "paste made by a mix of flour and water"; "the mixing of sound channels in the recording studio" (同)commixture, admixture, mixture, intermixture, mixing
- an event that combines things in a mixture; "a gradual mixture of cultures" (同)mixture
- a commercially prepared mixture of dry ingredients (同)premix
- to bring or combine together or with something else; "resourcefully he mingled music and dance" (同)mingle, commix, unify, amalgamate
- a condition in which a quantity no longer responds to some external influence
- chromatic purity: freedom from dilution with white and hence vivid in hue (同)chroma, intensity, vividness
- the act of soaking thoroughly with a liquid
- 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 contained in or performing the function of the veins; "venous inflammation"; "venous blood as contrasted with arterial blood"; "venous circulation"
PrepTutorEJDIC
- 〈複数のもの〉‘を'『混ぜ合わせる』,混合する,混同する / …‘を'混ぜ合わせて作る,調合して作る / …‘を'寄せ集める,まとめる / 〈物が〉(…と)混ざる,混合する《+『with』+『名』》 / 〈人が〉(他の人と)交わる,交際する《+『with』+『名』》 / 〈C〉〈U〉混合 / 〈C〉混合物(食品,薬) / 〈C〉〈U〉(水・火を加えて即席にでき上がる)素(もと),ミックス
- 十分にしみ込むこと,飽和させること / しみ込んだ状態,飽和状態 / (色の)飽和度,彩度
- 『酸素』(化学記号はO)
- 静脈[血]の / 葉脈の多い
- (異なった成分(要素)のものが)混ざった,混合の,混成の / 男女混合の / 人種(宗教・国籍など)が違う人々の(から成る)
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/02/08 03:34:35」(JST)
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This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (May 2015) |
Oxygen saturation (symbol SO2) is a relative measure of the amount of oxygen that is dissolved or carried in a given medium. It can be measured with a dissolved oxygen probe such as an oxygen sensor or an optode in liquid media, usually water. The standard unit of oxygen saturation is percent (%).
Oxygen saturation can be measured regionally and noninvasively. Arterial oxygen saturation (SaO2) is commonly measured using pulse oximetry. Tissue saturation at peripheral scale can be measured using NIRS. This technique can be applied on both muscle and brain.
In medicine
Main article: Oxygen saturation (medicine)
In medicine, oxygen saturation refers to oxygenation, or when oxygen molecules (O
2) enter the tissues of the body. In this case blood is oxygenated in the lungs, where oxygen molecules travel from the air and into the blood. Oxygen saturation ((O
2) sats) is a measure the percentage of hemoglobin binding sites in the bloodstream occupied by oxygen. Fish, invertebrates, plants, and aerobic bacteria all require oxygen for respiration.[1]
In environmental science
Main article: Oxygenation (environmental)
In aquatic environments, oxygen saturation is a ratio of the concentration of dissolved oxygen (O2) in the water to the maximum amount of oxygen that will dissolve in the water at that temperature and pressure under stable equilibrium. Well-aerated water (such as a fast-moving stream) without oxygen producers or consumers is 100 % saturated. [2]
It is possible for stagnant water to become somewhat supersaturated with oxygen (i.e. reach more than 100 % saturation) either because of the presence of photosynthetic aquatic oxygen producers or because of a slow equilibration after a change of atmospheric conditions.[2] Stagnant water in the presence of decaying matter will typically have an oxygen concentration much less than 100 %.[citation needed]
Environmental oxygenation can be important to the sustainability of a particular ecosystem. Refer to ([1] for a table of maximum equilibrium dissolved oxygen concentration versus temperature at atmospheric pressure. The optimal levels in an estuary for dissolved oxygen is higher than 6 ppm.[citation needed] Insufficient oxygen (environmental hypoxia), often caused by the decomposition of organic matter and/or nutrient pollution, may occur in bodies of water such as ponds and rivers, tending to suppress the presence of aerobic organisms such as fish. Deoxygenation increases the relative population of anaerobic organisms such as plants and some bacteria, resulting in fish kills and other adverse events. The net effect is to alter the balance of nature by increasing the concentration of anaerobic over aerobic species.
References
- ^ "Dissolved Oxygen - Environmental Measurement Systems". Environmental Measurement Systems. Retrieved 2015-10-08.
- ^ a b "Environmental Dissolved Oxygen Values Above 100% Air Saturation" (PDF). IOOS Website. YSI Environmental. Retrieved 29 July 2015.
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Respiratory physiology
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| Respiration |
- positive pressure ventilation
- breath (inhalation
- exhalation)
- respiratory rate
- respirometer
- pulmonary surfactant
- compliance
- elastic recoil
- hysteresivity
- airway resistance
- bronchial hyperresponsiveness
- bronchoconstriction/Bronchodilatation
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| Control |
- pons
- pneumotaxic center
- apneustic center
- medulla
- dorsal respiratory group
- ventral respiratory group
- chemoreceptors
- pulmonary stretch receptors
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| Lung volumes |
- VC
- FRC
- Vt
- dead space
- CC
- PEF
- calculations
- respiratory minute volume
- FEV1/FVC ratio
- methods of lung testing
- spirometry
- body plethysmography
- peak flow meter
- nitrogen washout
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| Circulation |
- pulmonary circulation
- hypoxic pulmonary vasoconstriction
- pulmonary shunt
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| Interactions |
- Perfusion (V)
- ventilation (V)
- ventilation/perfusion scan
- zones of the lung
- gas exchange
- pulmonary gas pressures
- alveolar gas equation
- alveolar–arterial gradient
- hemoglobin
- oxygen–haemoglobin dissociation curve (Oxygen saturation
- 2,3-BPG
- Bohr effect
- Haldane effect)
- carbonic anhydrase (chloride shift)
- oxyhemoglobin
- respiratory quotient
- arterial blood gas
- diffusion capacity (DLCO)
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| Insufficiency |
- high altitude
- oxygen toxicity
- hypoxia
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Index of the respiratory system
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| Description |
- Anatomy
- Physiology
- Development
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| Disease |
- Congenital
- Neoplasms and cancer
- Chest trauma
- Infection
- common cold
- pneumonia
- tuberculosis
- Other
- Symptoms and signs
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| Treatment |
- Procedures
- Drugs
- nasal
- throat
- obstructive airway diseases
- cough and cold
- histaminergics
- pulmonary arterial hypertension
- other
- Surgery
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Wastewater
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| Sources of wastewater |
- Acid mine drainage
- Ballast water
- Blackwater (coal)
- Blackwater (waste)
- Boiler blowdown
- Brine
- Combined sewer
- Cooling tower
- Cooling water
- Greywater
- Infiltration/Inflow
- Industrial effluent
- Ion exchange
- Leachate
- Manure
- Papermaking
- Produced water
- Return flow
- Reverse osmosis
- Sanitary sewer
- Sewage
- Sewage sludge
- Storm drain
- Urban runoff
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| Wastewater quality indicators |
- Biochemical oxygen demand
- Chemical oxygen demand
- Coliform index
- Dissolved oxygen
- Heavy metals
- pH
- Salinity
- Temperature
- Total dissolved solids
- Total suspended solids
- Turbidity
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| Wastewater treatment options |
- Activated sludge
- Aerated lagoon
- Agricultural wastewater treatment
- API oil-water separator
- Carbon filtration
- Chlorination
- Clarifier
- Constructed wetland
- Extended aeration
- Facultative lagoon
- Filtration
- Imhoff tank
- Industrial wastewater treatment
- Ion exchange
- Membrane bioreactor
- Reverse osmosis
- Rotating biological contactor
- Secondary treatment
- Sedimentation
- Septic tank
- Settling basin
- Sewage sludge treatment
- Sewage treatment
- Stabilization pond
- Trickling filter
- Ultraviolet germicidal irradiation
- UASB
- Wastewater treatment plant
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| Wastewater disposal options |
- Combined sewer
- Evaporation pond
- Groundwater recharge
- Infiltration basin
- Injection well
- Irrigation
- Marine dumping
- Marine outfall
- Sanitary sewer
- Septic drain field
- Sewerage
- Stabilization pond
- Storm drain
- Surface runoff
- Water reclamation
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UpToDate Contents
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- 1. 成人における確定診断を得られていない低血圧やショックの評価および初期アプローチevaluation of and initial approach to the adult patient with undifferentiated hypotension and shock [show details]
…occlusion pressure (ie, pulmonary capillary wedge pressure), right atrial pressure, and mixed venous oxyhemoglobin saturation (SvO2). These measurements are most useful diagnostically but can also be used …
- 2. 心肺バイパス術：マネージメントcardiopulmonary bypass management [show details]
…Adequacy of end-organ perfusion is determined by arterial blood gas analysis and the mixed venous oxygen saturation (SvO2), which is continuously monitored and maintained ≥75 percent throughout CPB …
- 3. 酸素供給と消費oxygen delivery and consumption [show details]
…plus the amount of oxygen dissolved in mixed venous blood: where SvO2 is the mixed venous oxyhemoglobin saturation and PvO2 is the mixed venous oxygen tension. Normal CvO2 is approximately…
- 4. 肺動脈カテーテル法：成人における血行動態値および波形の解釈pulmonary artery catheterization interpretation of hemodynamic values and waveforms in adults [show details]
…blood in the RA, RV, or PA is compared to the calculated mixed venous oxygen saturation (taken from the SVC and IVC). The mixed venous oxygen saturation is calculated as follows: In a patient at rest: [(3 x …
- 5. 術中に成人に行う成分輸血intraoperative transfusion of blood products in adults [show details]
…[TEE]), or evidence of other organ ischemia such as decreased urine output, decreased mixed venous oxygen saturation, or increased lactate levels in an anemic patient with coronary artery disease or limited…
English Journal
- Venoarterial PCO2-to-arteriovenous oxygen content difference ratio is a poor surrogate for anaerobic metabolism in hemodilution: an experimental study.
- Dubin A1, Ferrara G2, Kanoore Edul VS2, Martins E2, Canales HS2, Canullán C2, Murias G2, Pozo MO2, Estenssoro E2.
- Annals of intensive care.Ann Intensive Care.2017 Dec;7(1):65. doi: 10.1186/s13613-017-0288-z. Epub 2017 Jun 12.
- PMID 28608134
- Cerebral near-infrared spectroscopy insensitively detects low cerebral venous oxygen saturations after stage 1 palliation.
- Rescoe E1, Tang X2, Perry DA1, Sleeper LA1, DiNardo JA3, Kussman BD3, Kheir JN4.
- The Journal of thoracic and cardiovascular surgery.J Thorac Cardiovasc Surg.2017 Sep;154(3):1056-1062. doi: 10.1016/j.jtcvs.2017.03.154. Epub 2017 May 16.
- PMID 28599970
- Right atrial function and prognosis in idiopathic pulmonary arterial hypertension.
- D'Alto M1, D'Andrea A2, Di Salvo G3, Scognamiglio G2, Argiento P2, Romeo E2, Di Marco GM2, Mattera Iacono A2, Bossone E4, Sarubbi B2, Russo MG2.
- International journal of cardiology.Int J Cardiol.2017 Aug 24. pii: S0167-5273(17)32156-3. doi: 10.1016/j.ijcard.2017.08.047. [Epub ahead of print]
- PMID 28844500
Japanese Journal
- 呼吸器系 : 酸素化の評価 (特集 モニタリングを検証する)
- Leg Heating Using Far Infra-red Radiation in Patients with Chronic Heart Failure Acutely Improves the Hemodynamics, Vascular Endothelial Function, and Oxidative Stress
- Inoue Shujiro,Takemoto Masao,Chishaki Akiko,Ide Tomomi,Nishizaka Mari,Miyazono Mami,Sawatari Hiroyuki,Sunagawa Kenji
- Internal Medicine 51(17), 2263-2270, 2012
- … While the LTT had no significant effects on the heart rate, systolic arterial pressure, and diastolic blood pressure, it increased the cardiac output (mixed venous oxygen saturation; …
- NAID 130002062331
- 小児体外循環における上大静脈酸素飽和度と脳内酸素飽和度測定の有用性について
- 蓑田 英明,堤 善充,中田 正悟,青野 宏美,井福 武志,安永 弘
- 体外循環技術 = The journal of extra-corporeal technology 37(1), 21-23, 2010-03-01
- NAID 10026428229
Related Links
- monitoring of mixed venous oxygen saturation (SV02), the clinician has an additional parameter to use in evaluating ..... same respect, mixed venous oxygen saturation reflects the amount of oxygen returning to the pulmonary capillaries, ...
Related Pictures
★リンクテーブル★
[★]
- 英
- mixed venous oxygen saturation, Svo2, SvO2
- 関
- 酸素飽和度
概念
- 肺動脈カテーテルの先端に装着されたオキシメータによって混合静脈血のヘモグロビン酸素飽和度を連続的に測定できる(SAN.112)
- 酸素供給が全身の代謝要求に見合っているかどうかを反映している。
パラメタ
- 混合静脈血の酸素含量 ：酸素消費量、動脈血酸素含量(ヘモグロビン濃度、酸素飽和度)、心拍出量 (SAN.112)
読み方
- 正常値：70-80%
- 心肺機能の相対的な低下：65%以下
判別
- (組織での酸素摂取)：シアン中毒
- (貧血)：貧血
- (心拍出量)：ショック
混合静脈血酸素飽和度の理論
見る順番 ICU.173 → ICU.23 → ICU.20-21
１
- ICU.173を見る。
式(11-3)は「定義」 見て納得するしかない。
組織での酸素摂取量 VO2(ml/分) ＝ 全身への酸素供給量 DO2(ml/分) × ( 動脈血酸素飽和度 SaO2 - 混合静脈血酸素飽和度 SvO2 ) (11-3)
動脈血酸素飽和度 - 混合静脈血酸素飽和度： この差が、酸素を失った(末梢にO2を供給した)ヘモグロビンの割合
SvO2 ＝ SaO2 － VO2 ／ DO2 ・・・「１」
２
- ICU.23を見る。
全身への酸素供給量 DO2(ml/分) とは 1分間あたり、酸素を含んだ血液をどれだけ駆出しているかで計算できる。
Q 心拍出量：1分間に駆出できる血液の体積(L/min)
CaO2 動脈血酸素含有量：体積1Lの血液に含まれている酸素の体積(ml/L)。正確には、ヘモグロビンに結合している酸素と(ヘンリーの法則に従って)酸素分圧依存的に血液に直接溶解している酸素があるが、後述
酸素供給量 DO2 ＝ 心拍出量 Q × 動脈血酸素含有量 CaO2 (2-6) ・・・「２」
３
- ICU.20-21を見る
動脈血酸素含有量 CaO2 は式(2-3)の通りであるが、直接溶解している酸素は無視できるので式(2-5)の通りとなる。
1.34の意味はICU.19の式(2-1)の解説にあるとおり、ヘモグロビン1gあたり結合できる酸素の体積(ml)であり、定数である。
CaO2 ＝ 1.34 (ml/g) × ヘモグロビン濃度 Hb (g/ml) × 動脈血酸素飽和度 SaO2 ・・・「３」
４
「１」「２」「３」を合わせると、
SvO2 ＝ SaO2 － VO2 ／ ( Q × 1.34 × Hb × SaO2 )
心拍出量 Q は CO で表現する人もいる
「動脈血酸素飽和度」は現場で測定すべきであるが、麻酔管理下では厳密、多分0.95-0.97くらいに管理されていると考えられるので、
SvO2 ＝ SaO2 － VO2 ／ ( 1.34x0.97 × Hb × CO )
が導出される。ちなみに、1.34というのは ICU.19を見れば分かるとおり、本来1.39ぐらいの数値である■
[★]
- 関
- admix、admixture、blend、intermingle、merge、mixture、scramble、shuffle、shuffling
[★]
- 関
- vein、vena
[★]
- 関
- combined