WordNet

characterized by painstaking care and detailed examination; "a minute inspection of the grounds"; "a narrow scrutiny"; "an exact and minute report" (同)narrow
a unit of angular distance equal to a 60th of a degree (同)arcminute, minute of arc
a unit of time equal to 60 seconds or 1/60th of an hour; "he ran a 4 minute mile" (同)min
a short note; "the secretary keeps the minutes of the meeting"
a relative amount; "mix one volume of the solution with ten volumes of water"
the amount of 3-dimensional space occupied by an object; "the gas expanded to twice its original volume"
the magnitude of sound (usually in a specified direction); "the kids played their music at full volume" (同)loudness, intensity
a publication that is one of a set of several similar publications; "the third volume was missing"; "he asked for the 1989 volume of the Annual Review"
furnished with volumes; "a large room volumed with ancient books"
(often used in combination) consisting of or having a given number or kind of volumes; "the poets volumed works"; "a two-volumed history"; "multi-volumed encyclopedias"; "large-volumed editions"
formed or rising in rounded masses; "gasping with the volumed smoke"
pertaining to respiration; "respiratory assistance"
a breathing device for administering long-term artificial respiration (同)inhalator

PrepTutorEJDIC

(時間の単位の)『分』(1/60時間;《略》『m.,min.』) / (角度の単位の)分(1/60度;記号は'で,数字の後に付ける) / 〈U〉《しばしばa ~》《話》『瞬間』,ちょっとの間(moment) / (また『minute book』)《複数形で》(会議の)景事録
『ごく小さい』,微細な / 『精密な』,詳しい / ささいな,取るに足りない
〈C〉(特に分厚い)『本』,書物 / 〈C〉(シリーズものの)『巻』,冊(《略》(単数形で)vol.,(複数形で)vols.) / 〈U〉(…の)『体積』,容積《+of+名》 / 〈U〉〈C〉)…の)『量』,かさ《+of+名》 / 〈U〉(…の)『音量』,音の強さ,ボリューム《+of+名》 / 《複数形で》多量(の…),たくさん(の…)《+of+名》
呼吸の,呼吸作用の,呼吸のための
《米》人工呼吸装置 / (一般に)マスク;防毒マスク

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/04/08 02:04:51」(JST)

wiki en

[Wiki en表示]

Respiratory minute volume (or minute ventilation or expired minute volume) is the volume of gas inhaled (inhaled minute volume) or exhaled (exhaled minute volume) from a person's lungs per minute. It is an important parameter in respiratory medicine due to its relationship with blood carbon dioxide levels. It can be measured with devices such as a Wright respirometer, or can be calculated from other known respiratory parameters. Note that although its name implies that it is a volume, minute volume is actually a flow (it represents a volume change over time).

Several symbols can be used to represent minute volume. They include: , MV, and V_E.

Determination of minute volume

Minute volume can either be measured directly or calculated from other known parameters.

Measurement of minute volume

Minute volume is the amount of gas inhaled or exhaled from a person's lungs in one minute. It can be measured by a Wright respirometer or other device capable of cumulatively measuring gas flow, such as mechanical ventilators.

Calculation of minute volume

If both tidal volume (V_T) and respiratory rate (ƒ or RR) are known, minute volume can be calculated by multiplying the two values. One must also take care to consider the effect of dead space on alveolar ventilation, as seen below in "Relationship to other physiological rates".

Physiological significance of minute volume

Blood carbon dioxide (PaCO₂) levels generally vary inversely with minute volume.^{[citation needed]} For example, a person with increased minute volume (e.g. due to hyperventilation) should demonstrate a lower blood carbon dioxide level. The healthy human body will alter minute volume in an attempt to maintain physiologic homeostasis. A normal minute volume while resting is about 5–8 liters per minute in humans.^{[citation needed]} Minute volume generally decreases when at rest, and increases with exercise. For example, during light activities minute volume may be around 12 litres. Riding a bicycle increases minute ventilation by a factor of 2 to 4 depending on the level of exercise involved. Minute ventilation during moderate exercise may be between 40 and 60 litres per minute.^[1] ^[2]

Hyperventilation is the term for having a minute ventilation higher than physiologically appropriate. Hypoventilation describes a minute volume less than physiologically appropriate.

Relationship to other physiological rates

Minute volume comprises the sum of alveolar ventilation and dead space ventilation. That is:

where is alveolar ventilation, and represents dead space ventilation.

References

^ Zuurbier, M., Hoek, G., van den Hazel, P., Brunekreef, B. (2009). "Minute ventilation of cyclists, car and bus passengers: an experimental study.". Environmental Health 8 (48).
^ Int Panis, L (2010). "Exposure to particulate matter in traffic: A comparison of cyclists and car passengers". Atmospheric Environment 44: 2263–2270. doi:10.1016/j.atmosenv.2010.04.028.

External links

Overview at healthsystem.virginia.edu
Overview at ccmtutorials.com
Physiology at MCG 4/4ch3/s4ch3_15
What is minute ventilation

UpToDate Contents

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1. 成人の急性呼吸窮迫症候群における機械的人工換気 mechanical ventilation of adults in acute respiratory distress syndrome
2. 機械的人工換気の概要 overview of mechanical ventilation
3. 成人における肺機能検査の概要 overview of pulmonary function testing in adults
4. 妊娠中の気道変化 respiratory tract changes during pregnancy
5. 成人の急性呼吸不全における非侵襲的陽圧換気 noninvasive positive pressure ventilation in acute respiratory failure in adults

English Journal

Hypoxic ventilatory response after dopamine D2 receptor blockade in unilateral rat model of Parkinson's disease.

Andrzejewski K1, Budzińska K1, Zaremba M2, Kaczyńska K3.
Neuroscience.Neuroscience.2016 Mar 1;316:192-200. doi: 10.1016/j.neuroscience.2015.12.019. Epub 2015 Dec 17.
Modified non-motor brainstem ventilatory control might be involved in Parkinson's disease. Our study was designed to investigate the impact of degeneration of the nigrostriatal dopaminergic pathway on resting breathing and hypoxic ventilatory response in conscious rats. The role of central and perip
PMID 26705738

Association Between Expiratory Central Airway Collapse and Respiratory Outcomes Among Smokers.

Bhatt SP1, Terry NL2, Nath H2, Zach JA3, Tschirren J4, Bolding MS2, Stinson DS5, Wilson CG6, Curran-Everett D6, Lynch DA7, Putcha N8, Soler X9, Wise RA8, Washko GR10, Hoffman EA11, Foreman MG12, Dransfield MT13; Genetic Epidemiology of COPD (COPDGene) Investigators.
JAMA.JAMA.2016 Feb 2;315(5):498-505. doi: 10.1001/jama.2015.19431.
IMPORTANCE: Central airway collapse greater than 50% of luminal area during exhalation (expiratory central airway collapse [ECAC]) is associated with cigarette smoking and chronic obstructive pulmonary disease (COPD). However, its prevalence and clinical significance are unknown.OBJECTIVE: To determ
PMID 26836732

Fast Versus Slow Recruitment Maneuver at Different Degrees of Acute Lung Inflammation Induced by Experimental Sepsis.

Santos RS1, Moraes L, Samary CS, Santos CL, Ramos MB, Vasconcellos AP, Horta LF, Morales MM, Capelozzi VL, Garcia CS, Marini JJ, de Abreu MG, Pelosi P, Silva PL, Rocco PR.
Anesthesia and analgesia.Anesth Analg.2016 Feb 1. [Epub ahead of print]
BACKGROUND: Large tidal volume (VT) breaths or "recruitment maneuvers" (RMs) are used commonly to open collapsed lungs, but their effectiveness may depend on how the RM is delivered. We hypothesized that a stepped approach to RM delivery ("slow" RM) compared with a nonstepped ("fast" RM), when follo
PMID 26836136

Japanese Journal

エアマットレスが臥床中の呼吸機能へ与える影響

理学療法科学 32(2), 183-188, 2017
NAID 130005633898

Cardiorespiratory effects of isoflurane in Asiatic black bears (<i>Ursus thibetanus</i>) anesthetized with intramuscular medetomidine and zolazepam/tiletamine

Ｔｈｅ　Ｊｏｕｒｎａｌ　ｏｆ　Ｖｅｔｅｒｉｎａｒｙ　Ｍｅｄｉｃａｌ　Ｓｃｉｅｎｃｅ 79(1), 153-159, 2017
NAID 130005289739

Effect of inspiratory muscle training on respiratory capacity and walking ability with subacute stroke patients: a randomized controlled pilot trial

Journal of Physical Therapy Science 29(2), 336-339, 2017
NAID 130005241545

Related Pictures

★リンクテーブル★

リンク元	「分時換気量」「minute volume」「毎分換気量」
関連記事	「minute」「respiratory」「volume」「minute volume」

「分時換気量」

TLC	Total lung capacity: the volume in the lungs at maximal inflation, the sum of VC and RV.
TV	Tidal volume: that volume of air moved into or out of the lungs during quiet breathing (VT indicates a subdivision of the lung; when tidal volume is precisely measured, as in gas exchange calculation, the symbol VT or VT is used.)
RV	Residual volume: the volume of air remaining in the lungs after a maximal exhalation
ERV	Expiratory reserve volume: the maximal volume of air that can be exhaled from the end-expiratory position
IRV	Inspiratory reserve volume: the maximal volume that can be inhaled from the end-inspiratory level
IC	Inspiratory capacity: the sum of IRV and TV
IVC	Inspiratory vital capacity: the maximum volume of air inhaled from the point of maximum expiration
VC	Vital capacity: the volume of air breathed out after the deepest inhalation.
VT	Tidal volume: that volume of air moved into or out of the lungs during quiet breathing (VT indicates a subdivision of the lung; when tidal volume is precisely measured, as in gas exchange calculation, the symbol VT or VT is used.)
FRC	Functional residual capacity: the volume in the lungs at the end-expiratory position
RV/TLC%	Residual volume expressed as percent of TLC
VA	Alveolar gas volume
VL	Actual volume of the lung including the volume of the conducting airway.
FVC	Forced vital capacity: the determination of the vital capacity from a maximally forced expiratory effort
FEVt	Forced expiratory volume (time): a generic term indicating the volume of air exhaled under forced conditions in the first t seconds
FEV1	Volume that has been exhaled at the end of the first second of forced expiration
FEFx	Forced expiratory flow related to some portion of the FVC curve; modifiers refer to amount of FVC already exhaled
FEFmax	The maximum instantaneous flow achieved during a FVC maneuver
FIF	Forced inspiratory flow: (Specific measurement of the forced inspiratory curve is denoted by nomenclature analogous to that for the forced expiratory curve. For example, maximum inspiratory flow is denoted FIFmax. Unless otherwise specified, volume qualifiers indicate the volume inspired from RV at the point of measurement.)
PEF	Peak expiratory flow: The highest forced expiratory flow measured with a peak flow meter
MVV	Maximal voluntary ventilation: volume of air expired in a specified period during repetitive maximal effort
	v; t; e;