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2brt mech vent
2brt mechanical vent info. egans 42
| Question | Answer |
|---|---|
| vents can mesure what? | presure, vol., flow or time |
| conditional variable is used for what? | used by vent control circuit to make decisions. Ex: if value of a cond. variable reaches preset level, than some action occurs to change vent pattern. |
| how is acute cardiogenic pulmonary edema managed if hypercarbia is present? | NPPV non invasive positive presure ventilation |
| What is NPPV used for in hypoxemic resp. failure? | it is used if pt with poor outcome from intubation |
| when do intubate a pt with ALI/ARDS? | if no improvement within 1 to 2 hours |
| how do you manage acute cardiogenic pulmonary edema? | CPAP of 8 to 12 cm H2O with 100% O2 |
| What are the weaning modes | CPAP, SIMV, IMV, SMV |
| What control do you use with head injury? | volume control |
| peep is used for what? | presure at elvated level at expiration |
| what will peep help with? | increased PaO2, increased FRC, improves o2 |
| motion equation | p=(elastance x vol) + resistance x flow) |
| ventilation cycle of breath | initiation of inspiration, inspiration its self, end of inspiration, expiration |
| what are the diffrent ramps? | ascending above base and decending below base |
| trigger variable | causing breath to begin |
| a vent has a preset presure early in inspiration and holds it for spacific time for which inspiration ends. What cycle is it? | time cycle |
| tidal vol is a function of a set ______ and set_________ | inspiratory flow and inspiratory time |
| vol. cycle vent, it provides gas under positive presure during inspiration till what point? | tidal vol needed reaches a preset volume |
| Breath initiated by the vent | mandatory breath |
| when would I us vol control ventilation | RENT Retention (CO2), Even distrubution needed, Neuro patient, Trauma to head |
| combination of machanical and spontanious breaths | intermittent mandatory breaths |
| 3 variables that vents control | vol flow and pressure (remember that vol and flow they allways go because of the pressure) |
| how to figure minute ventilation | vt x rr |
| which varible maintains preset level before inspiration begins? | cycle varible |
| What is preset rate | rate set to acomplish desired tidal vol |
| 2 primary drive mechanismes | Electric and Pneumatic |
| sensitivity | presure drop to initiate patients breath. higher more effort, lower less effort |
| when do we use presure control ventilation | Pt. isn't maintaining oxygnation on own, ARDS, Restrictive diseases, refractory high poximia |
| setting range for presure trigger | .5 to 1.5 cmH2O |
| setting range for flow trigger | 1 to 3 L/min |
| vent device does not directly control the delivered vol. | flow control |
| during volume targeted ventilation what determins total cycle time? | rate |
| what variables will help determine expiratory time? | flow volume rate |
| what paramiter serves as baseline of all ventilators? | presure |
| what baseline variable is used on all modern ventilators? | PEEP |
| What are the variables a vent can control? | flow volume presure |
| ventilator used to transport? | punmatic battery fluid logic |
| with neuro muscular disorder which setting do I use? | volume control |
| cause a breath to end? | cycle variable |
| highest peak insparatory presure | ascending wave |
| flow control variable constant? varies? | flow and volume constant, presure varies |
| what control is used for restrictive disease? | presure control (is restrictive so we need presure to get O2 into lungs) |
Created by:
laura2brt
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