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ventilation
ventilation
The Oxford Companion to the Body
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2001
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© The Oxford Companion to the Body 2001, originally published by Oxford University Press 2001. (Hide copyright information)
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ventilation in the physiological sense (strictly,
pulmonary ventilation) refers to the volume of air breathed in and out of the
lungs: typically 5–6 litres per minute for an average-sized person at rest, with the possibility of increasing by up to twenty-fold in
exercise. For example, the size of each breath (
tidal volume) could vary from 0.5 to 3 litres, and the number of breaths per minute from 10 to 40. When for any reason
breathing stops or becomes inadequate, or if natural breathing is prevented by drug-induced muscle relaxation as an adjunct to
anaesthesia, mechanical or
artificial ventilation (also known as artificial respiration) is necessary. Methods range from mouth-to-mouth breathing to machines which pump gas rhythmically into the lungs
Stuart Judge
See
breathing;
breathing during exercise.
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Ventilation system O&M addressed in Standard 62R.(American Society of Heating, Refrigeration and Air-Conditioning Engineers standards for operation and maintenance)
Magazine article from: Air Conditioning, Heating & Refrigeration News; 12/2/1996; 700+ words
; ...considered for ASHRAE Standard 62-1989, "Ventilation for acceptable Indoor Air Quality...otherwise properly designed and installed ventilation system. Therefore, it establishes requirements for ventilation system operation and maintenance...
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A ventilation standard debate: Should pollutant source strengths be added when calculating ventilation rates?
Magazine article from: Heating, Piping, and Air Conditioning; 3/1/1998; ; 700+ words
; ...Source Principle as the basis for future ventilation standards Fundamental to the design...calculation of appropriate levels of ventilation. Since 1989, ANSI/ASHRAE Standard 62-1989, Ventilation for Acceptable Indoor Air Quality...
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Noninvasive ventilation to shorten the duration of mechanical ventilation.(Clinical report)
Magazine article from: Respiratory Care; 2/1/2009; ; 700+ words
; ...and Extubation Physiologic Rationale for Noninvasive Ventilation to Facilitate Weaning Physiologic Rationale for Noninvasive Ventilation to Prevent Extubation Failure Noninvasive Ventilation to Facilitate Weaning From Mechanical Ventilation Noninvasive...
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Mechanical ventilation in children
Magazine article from: The Turkish Journal of Pediatrics; 10/1/2006; ; 700+ words
; ...Derelli E, Ince E. Mechanical ventilation in children. Turk J Pediatr 2006; 48: 323-327. Mechanical ventilation can be lifesaving, but >50...records of patients who had mechanical ventilation in the Pediatric Intensive Care...
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Natural ventilation pressure in a deep salt mine--a case study
Magazine article from: Mining Engineering; 3/1/2002; ; 700+ words
; ...Abstract On May 15 and 16, 1999, a mine ventilation survey was performed in the 705-m...develop a numerical model of the existing ventilation system and to perform a computer simulation...study for long-term environmental and ventilation planning. Because the natural ventilation...
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Proper ventilation for shingled roofs.(Technical Details)
Magazine article from: Roofing Contractor; 4/1/2007; ; 700+ words
; Proper ventilation is required for the long-term success...be affected by insufficient interior ventilation throughout the year. In cold weather...attic areas. In hot weather, improper ventilation can lead to interior humidity that...
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Comprehensive ventilation/perfusion SPECT
Magazine article from: The Journal of Nuclear Medicine; 8/1/2001; ; 700+ words
; ...perfusion study is often complemented by a ventilation study. Intermediate probability scans...develop a fast method for tomographic ventilation and perfusion scintigraphy to improve...determined using a thorax phantom. Ventilation tomography after inhalation of 30 MBq...
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Ventilation effectiveness criteria and measurement methods applicable to animal buildings--a review.
Magazine article from: ASHRAE Transactions; 1/1/2007; ; 700+ words
; ...effectiveness of an animal building's ventilation system is usually characterized in terms...lacking. This paper reviews the existing ventilation effectiveness criteria and measurement...evaluation of an animal building's ventilation system. This work is a major component...
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Mechanical ventilation in the emergency department: Intubation and mechanical ventilation are often needed in emergency treatment.(Clinical report)
Magazine article from: CME: Your SA Journal of CPD; 3/1/2007; ; 700+ words
; ...who require intubation and mechanical ventilation often need to be treated for extended...acceptable to apply a single strategy of ventilation for all such patients. This is especially...awareness of the complications of mechanical ventilation, such as barotrauma, volutrauma and...
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Mechanical ventilation: changing concepts
Magazine article from: Indian Journal of Critical Care Medicine; 10/1/2005; ; 700+ words
; Introduction Mechanical ventilation is frequently delivered to patients...completely control patient's ventilation shortly after intubation. The...begins to improve, his or her ventilation is assisted by the ventilator until...
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artificial ventilation
Book article from: The Oxford Companion to the Body
artificial ventilation The body requires a certain volume...the patient must receive artificial ventilation to survive. The ‘kiss...aid’ form of artificial ventilation, and is described under resuscitation...
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Mechanical Ventilation
Encyclopedia entry from: Gale Encyclopedia of Surgery: A Guide for Patients and Caregivers
Mechanical ventilation Definition Mechanical ventilation is the use of a mechanical device (machine) to inflate and deflate the lungs. Purpose Mechanical ventilation provides the force needed to deliver air to the lungs...
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Lung Perfusion and Ventilation Scan
Encyclopedia entry from: Gale Encyclopedia of Medicine, 3rd ed.
Lung Perfusion and Ventilation Scan Definition A lung perfusion...blood flow to the lungs. A lung ventilation scan measures the ability of the...Purpose Lung perfusion scans and lung ventilation scans are usually performed in the...
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ventilation
Book article from: The Columbia Encyclopedia, Sixth Edition
ventilation process of supplying fresh air to an...by odors, gases, or smoke. Proper ventilation requires also that there be a movement...lethargy commonly associated with poor ventilation were caused entirely by the increase...
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ventilation centre
Book article from: A Dictionary of Biology
ventilation centre The group of neurons in the medulla...the brain that controls the process of ventilation . The partial pressure of carbon dioxide...of the aorta close to the heart. The ventilation centre responds to an increase in the...
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