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| Backup Rate |
A default controlled breathing
rate delivered by the ventilator in the event that its
primary control circuits fail. (See Backup
Ventilation.) |
| Backup
Ventilation |
A default set of ventilator
settings activated when the primary control circuits fail.
Typically a hardwired analog circuit takes over when a
microprocessor in a digitally-controlled system crashes. |
| Barotrauma |
Injury to the lungs due
to local over-inflation caused by high distending pressure
in the intrapulmonary airways. |
| Base
Flow (also Bias Flow) |
A minimum continuous flow
introduced into the patient circuit at all times. |
| Bias
Flow |
(See Base
Flow.) |
| BiPAP |
Bilevel Positive Airway
Pressure - A mode of operation in which the breathing
circuit from which the patient breathes spontaneously
is maintained at one pressure during exhalation and a
higher pressure during inspiration. |
| Boyle's Law |
For a given mass of gas
at a constant temperature, the pressure of the gas is
inversely proportional to the volume occupied by the gas. |
| Breathing Circuit |
(See Patient
Circuit.) |
| Breathing Rate |
BR - (See Frequency
(of Breathing)). |
| Bronchodilator |
A drug that widens the air
passages of the lungs and eases breathing by relaxing
bronchial smooth muscle. |
| Bronchoscope |
A device used to look into
the intrapulmonary airways; may be flexible utilizing
fiber optics to carry the image, or rigid, essentially
a narrow metal tube with lenses at each end. |
