Glossary
Glossary-3
hPa Hectopascal, a unit of pressure measurement. 1 hPa is equal to 1 mbar,
which is approximately equal to 1 cmH
2
O.
ID Inner diameter.
IEC International Electrotechnical Commission.
I:E ratio Ratio of inspiratory to expiratory time.
Inop Inoperative.
Inspiration:exhalation ratio See I:E ratio.
Inspiratory positive airway pressure See IPAP.
Inspiratory time See I-Time.
Inspiratory duty cycle See T
I
/T
TOT
.
Intentional leakage “Known,” quantifiable leakage that is a function of the
mask.
IPAP Inspiratory positive airway pressure. A control setting. The application
and maintenance of pressure above atmospheric at the airway throughout the
inspiration phase of positive-pressure mechanical ventilation.
ISO International Organization for Standardization, a worldwide federation of
national standards bodies.
I-Time Inspiratory time. The duration of inspiration during mechanical
ventilation.
L Liter.
LCD Liquid crystal display.
LED Light-emitting diode.
Limit To prevent from exceeding a specified maximum value during a breath.
LIP Low Inspiratory Pressure Alarm, an alarm setting.
Lo Rate Low Rate Alarm, an alarm setting.
Lo
E
Low Minute Ventilation Alarm, an alarm setting.
Lo V
T
Low Tidal Volume Alarm, an alarm setting.
Mandatory breath A breath for which either the timing or volume is controlled
by the ventilator. That is, the machine triggers and/or cycles the breath.
Max E Maximum elastance (volume assist). A control setting in PPV.
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