The invention provides a method for acquiring
end expiration intravascular
pressure wave data through an expiratory
apnea method. The method specifically comprises the following steps: for a patient with pure
positive airway pressure, a
breathing control device is started directly to enable a
breathing machine to be in an expiratory
apnea state, air supply of
positive airway pressure is stopped, at the time,
positive airway pressure is of an expiration phase, when the control device is stopped, the
breathing machine supplies air normally, accordingly, variation is caused to vascular
pressure wave, and the flat part before the variation is intravascular pressure
end expiration point, so that the intravascular
pressure wave of the expiration phase can be obtained; and for patient combining positive
airway pressure with autonomous
respiration, the
breathing control device is enabled to be in a close state through being started at the end of autonomous inspiration, positive
airway pressure is stopped to supply air, at the time, autonomous
respiration of the patient and positive
airway pressure of the breathing
machine are both of an expiration phase, when the control device is stopped or autonomous
respiration occurs, accordingly, variation is caused to vascular pressure wave, and the flat part before the variation is intravascular pressure
end expiration point, so that end expiration intravascular pressure wave data can be obtained. The method is rapid and accurate in analysis, and the obtained intravascular pressure is closer to objective end expiration intravascular pressure. The method is high in clinical compliance and is particularly applicable to
emergency department,
anesthesia department,
cardiology, department of
cardiac surgery, ICU (
Intensive Care Unit) and other departments where patients are required to be saved quickly.