840sevice教学资料theory4

1、pneumatic theorypatient circuitupatient circuit (pc) is optionaluadult or pediatriclreusablelsingle patient useucan be vary simple for short term use or more complex for extended use for a single patientf8tubeswye f9pneumatic theorypatient circuituthe pc is defined, tested, and characterized during

2、sst (short self test)uthe pc can include humidification device (heat moisture exchanger, standard humidifier, or hot wire humidifier), adult or pediatric versions uadditional water traps can be addedpneumatic theorypatient circuitf8tubeswye f9uinspiration filter f8 is a hepa type that filters down t

3、o 0.3 microns at flow rates up to 100 l/muf8 can be disposable or reusableunpb r/flex, d/flex filters, or equivalents may be used pneumatic theorypatient circuitf8uthe patient circuit humidifier can be a standard humidifier, hot wire for inspiration limb, or hot wire for inspiration and exhalation l

4、imbsuheat moisture exchangers (hmes) can be usedpneumatic theorypatient circuitucircuit may be short, long, adult, pediatric, reusable, or disposableucircuit is defined, tested, and characterized during ssturesults stored for use in breath delivery and ongoing testsu wye connects the inspiratory and

5、 expiratory limbs to the patientpneumatic theorypatient circuittubeswyeupatient circuit water traps can be added to handle additional condensation present with continuous flowunpb water traps can be opened and drained without disturbing patient ventilationpneumatic theorypatient circuitf9 andecvuthe

6、 exhalation filter f9 and exhalation collector vial ecv make a water trap to remove water and contaminants from the exhaled gas to protect the exhalation system ureusable and single patient use version are available pneumatic theorypatient circuituduring sst the resistance and compliance of the pati

7、ent circuit is measure and storeduduring normal operation these measurements are used:lto compensate breath delivery for circuit effectslbaseline to monitor for occlusions , leaks, or disconnectspneumatic theorypatient circuitusst should be used to test and characterize the patient circuit any time the type of circuit is changed or between patientsucompliance corrections are based on the compliance measurements recorded during sstucircuit re