H-1.601. 00137-B3.0
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1 Inspiratory pressure (tidal volume in case of volume control mode)
2 Inhalation/expiration ratio (I/E) 4 PEEP (or CPAP)
3 Respiration frequency 5 Oxygen concentration
5.5
Details on Ventilation Modes
T5 allows different ventilation modes based on patient's condition.
5.5.1 IPPV and PCV
• IPPV
In case of mechanical ventilation in IPPV
(Intermittent Positive Pressure Ventilation), the respirator always offers
positive pressure ventilation, supplying rising pressure during inspiration
and baseline pressure during expiration. In other word, consecutive
respiration support is provided for breathless patient and each respiration is
mandatory. T5 operates in volume-controlled IPPV, where air in preset tidal
volume is conveyed to the patient at a constant flow rate and preset
respiration frequency and for the preset respiration duration, so that the
patient will obtain stable tidal volume in variable pressure, with inspiration
peak pressure kept high in case of poor compliance or high air duct
resistance and low in case of good conformity or low airway resistance. The
tidal volume, I/E and inspired air flow rate for the patient are completely
controlled by respirator, which supplies constant inspired air flow rate and all
respiratory power.
IPPV, also known as Controlled Mechanical Ventilation (CMV), is a ventilation
technology commonly used in clinic applications and mainly for patients
without spontaneous breathing. The respirator will provide patient with
positive pressure ventilation based on the preset ventilation parameters
regardless of the patient's own breathing condition.
A typical pressure waveform of IPPV is shown below：
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