1. the process or act of supplying a house or room continuously with fresh air.
3. in psychiatry, verbalization of one's problems, emotions, or feelings.
a fraction of the pulmonary ventilation
, being the amount of air that reaches the alveoli and is available for gas exchange with the blood.
(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.
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
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.
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 2.
in the nursing interventions classification
, a nursing intervention
defined as the use of an artificial device to assist a patient to breathe.
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.
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 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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
ventilation (vent?i-la'shon) [ ventilatio, an airing]
1. The movement of air into and out of the lungs.
2. Circulation of fresh air in a room and withdrawal of foul air.
3. In physiology, the amount of air inhaled per day. This can be estimated by spirometry, multiplying the tidal air by the number of respirations per day. An average figure is 10,000 L. This must not be confused with the total amount of oxygen consumed, which is on the average only 360 L/day. These volumes are more than doubled during hard physical labor.
abdominal displacement ventilation
A noninvasive type of artificial ventilation that relies on displacement of the abdominal contents to move the patient's diaphragm.
adaptive support ventilation Abbreviation: ASV
A mode of mechanical ventilation in which the minute ventilation is not allowed to fall below a set threshold (e.g., in adults, below 100 ml/kg/min), but the inspiratory pressure, inspiratory time, and tidal volume are all adjusted by the ventilator to the patient's needs.
airway pressure release ventilation
A type of mechanical ventilation in which patients breathe spontaneously at any phase of the ventilator's duty cycle at high continuous positive airway pressures (CPAP). Periodically, the level of CPAP is lowered to eliminate waste gases from the circuit.
The movement of air into and out of the alveoli. It is a function of the size of the tidal volume, the rate of ventilation, and the amount of dead space present in the respiratory system. It is determined by subtracting the dead space volume from the tidal volume and multiplying the result by the respiratory rate.
A type of mechanical ventilation with a minimum frequency of respirations determined by ventilator settings. It also permits the patient to initiate ventilation at the same tidal volume or pressure as set on the ventilator.
In emergency cardiac or critical care, the administration of artificial breaths to a patient that are timed independently of chest compressions.
continuous positive-pressure ventilation
A method of mechanically assisted pulmonary ventilation. A device administers air or oxygen to the lungs under a continuous pressure that never returns to zero.
differential lung ventilation
The use of different ventilatory strategies in each lung in a patient with focal lung disease, e.g., a patient undergoing surgery to remove a tumor in one lobe of a lung but not another, or a patient with more severe COPD on one side of the chest than another. This technique requires a double-lumen endotracheal tube.
dual control ventilation
Mechanical ventilation initiated by either a change in airway pressures or by a change in gas flowing through the ventilator circuit. Dual control is asserted when pressure limited breaths are delivered and the pressure changes from breath to breath to meet a desired delivered tidal volume. It improves the coordination between the patient's respiratory efforts and machine-generated breaths.
high-frequency jet ventilation
A type of ventilation that continuously ventilates at 100 to 150 cycles/min. It is used in respiratory failure to provide continuous ventilation without the side effects of positive-pressure ventilation.
high-frequency oscillatory ventilation Abbreviation: HFOV
Pulmonary ventilation with multiple rapid breaths given at small tidal volumes. It limits the stretching and collapse of the alveoli that occur in conventional mechanical ventilation.
high-frequency percussive ventilation
Mechanical ventilation that decreases peak and end-expiratory pressure by delivering hundreds of shallow (low tidal volume) breaths per minute. It is a time-cycled, pressure-limited mode of ventilation.
intermittent mandatory ventilation Abbreviation: IMV
Machine ventilation that delivers pressurized breaths at intervals while allowing for spontaneous breathing.
intermittent positive-pressure ventilation
A mechanical method of assisting pulmonary ventilation, using a device that inflates the lungs under positive pressure. Exhalation is usually passive. Synonym: breathing, intermittent positive-pressure
inverse ratio ventilation Abbreviation: IRV
Mechanical ventilation in which the normal temporal relationship between inspiration and expiration is reversed (the inspiration time is longer than the expiratory time). It is sometimes used in severely hypoxemic patients who have not responded to other ventilatory maneuvers. Because it is uncomfortable for patients, paralysis and sedation are needed.
A ventilatory technique used to treat both premature infants with surfactant-deficient lungs and adults with acute respiratory distress syndrome.
mandatory minute ventilation
Ventilatory support that provides mechanical breaths when the patient's spontaneous breathing does not achieve the preset mechanical ventilatory rate.
maximum sustainable ventilation
The normal maximum breathing pattern that can be maintained for 15 min (usually approx. 60% of maximum voluntary ventilation).
maximum voluntary ventilation
The maximum amount of gas that can be ventilated into and out of the lungs in a voluntary effort in a given time, measured in liters per minute.
Any form of artificially supplied ventilation.
minute ventilation Abbreviation: MV
The volume of air inhaled and exhaled in 60 sec. See: minute volume
NONINVASIVE POSITIVE PRESSURE VENTILATION
The use of airway support administered through a face (nasal) mask instead of an endotracheal tube. Inhaled gases are given with positive end-expiratory pressure often with pressure support or with assist control ventilation at a set tidal volume and rate. Numerous studies have shown this technique to be as effective as, and better tolerated than, intubation and mechanical ventilation in patients with exacerbations of COPD. See: illustration
positive-pressure mechanical ventilation
Mechanical ventilatory support that applies positive pressure to the airway. The objectives include improving pulmonary gas exchange, relieving acute respiratory acidosis, relieving respiratory distress, preventing and reversing atelectasis, improving pulmonary compliance, preventing further lung injury, and avoiding complications. Positive-pressure ventilation can be life saving, but complications such as toxic effects of oxygen, laryngeal injury, tracheal stenosis, alveolar injury, barotrauma, pneumonia, and psychological problems may occur. See: pressure, positive end-expiratory
pressure support ventilation
A type of assisted ventilation that supplements a spontaneous breath. The patient controls the frequency and the duration and flow of inspiration from the ventilator.
A type of mechanical ventilation in which tidal volumes are set to avoid overstretching the alveoli, and pressures at the end of an inhaled breath are set to avoid alveolar collapse.
The inspiration and expiration of air from the lungs.
reduced ventilationRespiratory depression.
synchronized intermittent mandatory ventilation Abbreviation: SIMV
Periodic assisted ventilation with positive pressure initiated by the patient and coordinated with spontaneous patient breaths. See: intermittent mandatory ventilation
transtracheal catheter ventilation
An emergency procedure in which a catheter is placed percutaneously through the cricothyroid membrane and attached to a high-pressure, high-flow jet ventilator. This form of ventilation is used for patients with an upper airway obstruction who cannot be intubated.
A form of mechanical ventilation in which the peak inspiratory flow rate, fraction of inspired oxygen, positive end-expiratory pressure, respiratory rate, and tidal volume are preset and delivered to the patient. Synonym: volume-cycled ventilation; volume-limited ventilation
volume-cycled ventilationVolume-controlled ventilation.
volume-limited ventilationVolume-controlled ventilation.
Medical Dictionary, © 2009 Farlex and Partners
Patient discussion about ventilation
Q. Help her to breathe. My sixteen year old cousin (girl) who is wondering if she is suffering from asthma, anxiety or both. She is thin, healthy girl and have been very worried She have asthma and have been thinking about it constantly. When she exercise, she get more out of breath, more worn out, and her heart beats faster than other people. Sometimes her chest hurts, but people tell me that is from my chest muscles being worked. She get a little dizzy also. When she go to bed at night sometimes it seems hard to breathe. She can take a deep breath and everything but it seems hard or something. I know there isn't anything wrong with my heart because she had an EKG done recently and chest x-rays. That was fine. When it is hot humid and muggy outside she find it hard to breath. Do you think she have asthma. She don't have any coughing or any known wheezing. Could thinking about every breath she take seem like she have asthma? She really want to know and me too, what is going on! Please help her to breathe!!!!
A. PS--alcohol and cigarettes can cause this problem to(drugs)mrfoot56.
Q. What causes bad breath? I have bad breath for a long time. What causes it?
A. Here are some causes of bad breath:
A Dry mouth- Saliva helps cleanse and moisten your mouth. A dry mouth enables dead cells to accumulate on your tongue, gums and cheeks. These cells then decompose and cause odor. Dry mouth naturally occurs during sleep. It's what causes "morning breath." Dry mouth is even more of a problem if you sleep with your mouth open. Some medications as well as smoking can lead to a chronic dry mouth, as can a problem with your salivary glands.
Some Diseases can also cause bad breath- Chronic lung infections and lung abscesses can produce very foul-smelling breath. Other illnesses, such as some cancers and certain metabolic disorders, can cause a distinctive breath odor. Kidney failure can cause a urine-like odor, and liver failure may cause an odor described as "fishy." People with uncontrolled diabetes often have a fruity breath odor. Chronic reflux of stomach acids from your stomach (gastroesophageal reflux disease, or GERD)
Q. How to get rid of bad breath? My wife complains that I have bad breath. How can I get rid of it?
A. Consider that candida infection can make your breath worse. You might try cutting down on sugar and carbs.More discussions about ventilation
"Bad breath can also be caused by a candida (yeast infection), you may have a constant white furry tongue. Look at cutting down your intake of sugars and processed foods, as well as those containing yeast. - Search for Anti-Candida diet on a search engine for more info"
This content is provided by iMedix and is subject to iMedix Terms. The Questions and Answers are not endorsed or recommended and are made available by patients, not doctors.