- 関
- intrathoracic pressure
WordNet
- the force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit); "the compressed gas exerts an increased pressure" (同)pressure level, force per unit area
- an oppressive condition of physical or mental or social or economic distress
- the somatic sensation that results from applying force to an area of skin; "the sensitivity of his skin to pressure and temperature was normal" (同)pressure_sensation
- a force that compels; "the public brought pressure to bear on the government"
PrepTutorEJDIC
- 〈U〉『押すこと』,『押しつけること』,圧搾,圧縮;〈C〉〈U〉『圧力』,圧力の強さ / 〈U〉『圧迫』,『強制』 / 〈U〉(不快な)圧迫感 / 〈C〉〈U〉(精神的な)重荷,苦脳;(時間・金銭的)切迫 / 〈U〉多忙,あわただしさ / 《おもに米》…‘に'圧力をかける,強制する(《英》pressurise)
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/08/28 10:07:35」(JST)
[Wiki en表示]
In physiology, intrapleural pressure (also called intrathoracic pressure) refers to the pressure within the pleural cavity. Normally, the pressure within the pleural cavity is slightly less than the atmospheric pressure, in what is known as negative pressure.[1] When the pleural cavity is damaged/ruptured and the intrapleural pressure becomes equal to or exceeds the atmospheric pressure, pneumothorax may ensue.
Intrapleural pressure depends on the ventilation phase, atmospheric pressure, and the volume of the intrapleural cavity.[2]
At rest we have a negative intrapleural pressure. This gives us a transpulmonary pressure expanding the lungs. Intrapleural pressure is sub-atmospheric. This is due to the recoil of the chest and lungs away from each other.
Müller's maneuver can temporarily significantly decrease the intrapleural pressure.[1]
References
- ^ a b Khanorkar, p. 205
- ^ Blom, p. 7
- Books
- Blom, J. A. (2004). Monitoring of Respiration and Circulation. CRC Press. ISBN 978-0-8493-2083-5.
- Khanorkar, Sudha Vinayak (1 February 2012). Insights in Physiology. JP Medical Ltd. ISBN 978-93-5025-516-2.
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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
|
UpToDate Contents
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- 1. 胸腔内圧の測定と測定値の解釈：実施の基準および手技measurement and interpretation of pleural pressure manometry indications and technique [show details]
…separately. Pleural pressure is recorded at the beginning of the procedure as well as during fluid removal. Initial pleural pressure – We typically calculate the initial mean pleural pressure using several …
- 2. 疾患における胸水貯留の機序mechanisms of pleural liquid accumulation in disease [show details]
… lymphatic stomata (eg, fibrin deposition on pleural surface, pleural malignancy) Decreased intrapleural pressure (eg, atelectasis) Increased systemic venous pressure – Acutely, increases in venous pressure …
- 3. 正常な状態における胸水のターンオーバー機序mechanisms of pleural liquid turnover in the normal state [show details]
…elevation of systemic microvascular pressure (eg, from systemic venous hypertension), a decrease in pleural pressure (eg, in atelectasis), or a decrease in serum protein concentration (eg, with hypoproteinemia) …
- 4. 関節リウマチ関連肺疾患の概要overview of lung disease associated with rheumatoid arthritis [show details]
…measurement of pleural pressure during incremental withdrawal of pleural fluid can be performed at the time of thoracentesis. The technique for measuring and analyzing pleural pressures is described separately …
- 5. 成人における胸水の診断的評価：病因未確定に対する追加検査diagnostic evaluation of pleural effusion in adults additional tests for undetermined etiology [show details]
…appropriate clinical setting, when the decrease in pleural pressure is more than 15 cm H2O per liter of fluid removed. The initial pleural pressure with a trapped lung is typically negative, but a …
English Journal
- Low activation threshold of juxtapulmonary capillary (J) receptors of the lung.
- , A A, A A, A A, .
- Respiratory physiology & neurobiology. 2019 Aug;266()66-72.
- Respiratory reflexes arising from stimulating juxtapulmonary capillary (J) receptors by increasing doses of phenyl diguanide (PDG) were examined in 18 spontaneously breathing cats. In 60% an immediate and four-fold increase in breathing frequency (fR) was produced by doses as small as 5.1 ± μ
- PMID 31063822
- Effect of spontaneous breathing on umbilical venous blood flow and during delayed cord clamping in preterm lambs.
- Brouwer E, Te Pas AB, Polglase GR, McGillick EV, Böhringer S, Crossley KJ, Rodgers K, Blank D, Yamaoka S, Gill AW, Kluckow M, Hooper SB.
- Archives of disease in childhood. Fetal and neonatal edition. 2019 May;().
- During delayed umbilical cord clamping, the factors underpinning placental transfusion remain unknown. We hypothesised that reductions in thoracic pressure during inspiration would enhance placental transfusion in spontaneously breathing preterm lambs. Investigate the effect of spontaneous breathing
- PMID 31092674
- PMID 31082123
Japanese Journal
- Glenn手術後の呼吸循環管理にairway pressure release ventilation（APRV）が著効した一例
- 宮 卓也,大崎 真樹,元野 憲作,濱本 奈央,植田 育也
- 日本集中治療医学会雑誌 21(5), 501-505, 2014
- … 陽圧式人工呼吸管理と比較して，Glenn手術やFontan手術後の肺体直列循環におけるairway pressure release ventilation（APRV）の優位性が報告され始めている。 …
- NAID 130004691321
- Change in Intrathoracic Pressure in Rats with Spontaneous and Controlled Ventilation during Microgravity by Parabolic Flight
- Miyahara Gotoh Taro,Fujiki Nobuhiro,Tanaka Kunihiko [他],MORITA Hironobu
- The Japanese journal of physiology 55(1), 69-74, 2005-02-01
- NAID 10015570281
- Change in Intrathoracic Pressure in Rats with Spontaneous and Controlled Ventilation during Microgravity by Parabolic Flight
- Gotoh Taro Miyahara,Fujiki Nobuhiro,Tanaka Kunihiko,Morita Hironobu
- The Japanese Journal of Physiology 55(1), 69-74, 2005
- … We previously reported that the intrathoracic pressure (ITP) decreases and the transmural pressure of the aortic wall (TMP) increases during 4.5 s of microgravity (μG) induced by free drop. … To examine the ITP response to a longer period of μG in the absence of the respiratory rate (RR) decrease, i.e., bradypnea, which occurs at the onset of μG, we measured the aortic blood pressure at the diaphragma level (AP) and ITP. …
- NAID 130004435922
Related Links
- The direct measurement of pleural pressures in a pleural effusion, also known as pleural manometry, can be performed at the time of thoracentesis. Assessment of the initial pleural fluid pressure and the changes in ...
- pressure (P) [presh´ur] force per unit area. arterial pressure (arterial blood pressure) blood pressure (def. 2). atmospheric pressure the pressure exerted by the atmosphere, usually considered as the downward pressure of air onto a ...
- Start studying Intrapulmonary and Intrapleural pressure. Learn vocabulary, terms, and more with flashcards, games, and other study tools. ... keeps the lungs against the chest wall and is the difference between the ...
★リンクテーブル★
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- 英
- intrathoracic pressure
- 同
- 胸膜腔内圧 intrapleural pressure
- 関
- 胸内圧
[show details]
- 通常の呼吸では-3～-10cmH2O程度で常に陰圧(QB.I-302)。呼気末期：-2～-4cmH2O、吸気末期-6～-7cmH2O(医学事典)。
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- 英
- intrathoracic pressure, intrapleural pressure
[★]
- 関
- intrapleural pressure
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