minute ventilation

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Related to minute ventilation: alveolar ventilation


1. the process or act of supplying a house or room continuously with fresh air.
2. in respiratory physiology, the process of exchange of air between the lungs and the ambient air; see alveolar ventilation and pulmonary ventilation. See also respiration (def. 1). Called also breathing.
3. in psychiatry, verbalization of one's problems, emotions, or feelings.
alveolar ventilation a fraction of the pulmonary ventilation, being the amount of air that reaches the alveoli and is available for gas exchange with the blood.
assist/control mode ventilation positive pressure ventilation in the assist-control mode; if the spontaneous ventilation rate falls below a preset level, the ventilator enters the control mode.
assisted ventilation artificial respiration.
assist mode ventilation positive pressure ventilation in which the ventilator is in the assist-control mode; see also control mode ventilation and assist/control mode ventilation.
controlled ventilation (control mode ventilation) positive pressure ventilation in which the ventilator is in control mode, with its cycle entirely controlled by the apparatus and not influenced by the patient's efforts at spontaneous ventilation.
high-frequency ventilation a technique of mechanical ventilation that uses very high rates (over 80 breaths per minute) and small tidal volumes (equal to or less than dead space); it may either be positive pressure ventilation or be delivered in the form of frequent jets of air. It is used to lower the peak airway pressure applied to the lung, thus decreasing the risk of barotrauma.
high-frequency jet ventilation a type of high-frequency ventilation characterized by delivery of gas through a small catheter in the endotracheal tube.
high-frequency percussive ventilation a type of high-frequency ventilation characterized by delivery of pressure-limited breaths in short bursts of gas from a venturi mask.
high-frequency positive pressure ventilation a type of high-frequency ventilation characterized by low compressible volume circuit and tidal volume delivery of 3 to 4 mL per kg.
impaired spontaneous ventilation a nursing diagnosis accepted by the North American Nursing Diagnosis Association, defined as a state in which an individual's decreased energy reserves result in inability to maintain breathing adequate to support life. See also spontaneous ventilation.
intermittent mandatory ventilation (IMV) a type of control mode ventilation in which the patient breathes spontaneously while the ventilator delivers a prescribed tidal volume at specified intervals and allows the patient to breathe spontaneously between cycles. The ventilator rate is set to maintain the patient's PaCO2 at desired levels and is reduced gradually to zero as the patient's condition improves. See also intermittent positive-pressure breathing.
intermittent mandatory ventilation, synchronized (SIMV) positive pressure ventilation in which the patient breathes spontaneously while the ventilator delivers a positive-pressure breath at intervals that are predetermined but synchronized with the patient's breathing.
intermittent positive pressure ventilation (IPPV) intermittent positive pressure breathing.
maximal voluntary ventilation (maximum voluntary ventilation (MVV)) the maximum volume that can be exhaled per minute by the patient breathing as rapidly and deeply as possible. Called also maximal breathing capacity.
mechanical ventilation
1. ventilation accomplished by extrinsic means, usually distinguished as either negative pressure or positive pressure ventilation. See also spontaneous ventilation.
2. in the nursing interventions classification, a nursing intervention defined as the use of an artificial device to assist a patient to breathe.
minute ventilation the total volume of gas in liters expelled from the lungs per minute. See also minute volume. Called also total ventilation.
negative pressure ventilation a type of mechanical ventilation in which negative pressure is generated on the outside of the patient's chest and transmitted to the interior of the thorax in order to expand the lungs and allow air to flow in; used primarily with patients having paralysis of the chest muscles. See also ventilator.
noninvasive ventilation mechanical ventilation that does not use an artificial airway, such as positive pressure ventilation with a nasal or face mask.
partial liquid ventilation ventilatory support in which the lungs are filled to the level of the functional residual capacity with a liquid perfluorocarbon; mechanical ventilation is then superimposed and oxygen and carbon dioxide are transferred through the liquid.
positive pressure ventilation any of numerous types of mechanical ventilation in which gas is delivered into the airways and lungs under positive pressure, producing positive airway pressure during inspiration; it may be done via either an endotracheal tube or a nasal mask. See also ventilator.
pressure control ventilation positive pressure ventilation in which breaths are augmented by air at a fixed rate and amount of pressure, with tidal volume not being fixed; used particularly for patients with acute respiratory distress syndrome.
pressure support ventilation positive pressure ventilation in which the patient breathes spontaneously and breathing is augmented with air at a preset amount of pressure, with tidal volume not being fixed.
proportional assist ventilation positive pressure ventilation in which the ventilator can sense the patient's level of inspiratory flow and deliver pressure support to achieve a given tidal volume.
pulmonary ventilation a measure of the rate of ventilation, referring to the total exchange of air between the lungs and the ambient air, usually in liters per minute.
spontaneous ventilation term used to denote breathing accomplished naturally, without any artificial aids, as opposed to mechanical ventilation and other forms of artificial respiration.
total ventilation minute ventilation.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

pul·mo·nar·y ven·ti·la·tion

respiratory minute volume, that is, the total volume of gas per minute inspired (VI) or expired (VE) expressed in liters per minute; differs from alveolar ventilation by including the exchange of dead space gas.
Synonym(s): minute ventilation
Farlex Partner Medical Dictionary © Farlex 2012

min·ute vol·ume

(min'ŭt vol'yūm)
The amount of any gas or fluid moved in 1 minute (e.g., cardiac output or the respiratory minute volume).
Synonym(s): minute ventilation.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Goto et al., "Oxygen uptake efficiency slope: a new index of cardiorespiratory functional reserve derived from the relation between oxygen uptake and minute ventilation during incremental exercise," Journal of the American College of Cardiology, vol.
A simple variant bedside method has been used, which is to fill the re-breathing bag with 100 percent O2 and have the patient re-breath while measuring the PCO2 and minute ventilation. The PCO2 will rise to a higher level through metabolism alone, and the test run will take eight or nine minutes.
No significant differences were seen between groups for tidal volume, minute ventilation or peak inspiratory pressure (Table 3).
With the generalized muscle atonia associated with REM sleep, this accessory muscle activity is lost (45), resulting in reduced minute ventilation (2).
By increasing the minute ventilation (whether with an increase in frequency or respiratory rate) one will only further load the right ventricle (and limit the cardiac output with the predicted effect on mixed venous saturation).
An appropriate respiratory rate (RR) (10-15 breaths/min) for the desired minute ventilation should be chosen.
Minute ventilation increases, as does respiratory rate.
The technique involves having the patient learn exercises that reduce both the frequency and the depth of breathing, to induce hypocapnia and reduce minute ventilation. Typically, the training is given in five to seven sessions of 1-2 hours each.
This equation can be arranged so that the probability of airborne infection is given by P (infect) = C/S=1-exp(-Iqtp/Q), where C is the number of cases among S persons susceptible to the infection; I is the number of sources of infection; q is the number of "quanta," or units of bacilli necessary to cause infection produced per source per unit of time; t is the time of exposure per unit of time; p is the minute ventilation rate of the exposed susceptible hosts in volume per unit of time; and Q is the volumetric rate of fresh air ventilation that removes the infectious aerosol in volume per unit of time.
Studies have suggested that even though supplemental [O.sub.2] results in C[O.sub.2] retention in some patients, these individuals often have a minimal decrease in respiratory rate, tidal volume, or minute ventilation (see Table 1 for definitions).
GME is offering a turbine-style ventilation system capable of 5,000-14,000 cubic feet per minute ventilation that can be used for tank maintenance, work in vaults and in similarly confined spaces.