| AC15 | AC 14 | AC 12 | Ac 10 | AC 8 | AC 6 | |
| peak pressure | 13 | 13 | 12 | 12 | 12 | 11 |
| Exp min | 7.2 | 6.7 | 5.8 | 4.8 | 3.8 | 2.9 |
| O2 | 98 | 98 | 98 | 98 | 98 | 98 |
| VTE | 484 | 485 | 482 | 480 | 478 | 444 |
| Ftotal | 15 | 14 | 12 | 10 | 8 | 6 |
| Rinsp | 2 | 2 | 2 | 2 | 2 | 2 |
| peep | 5 | 5 | 5 | 5 | 5 | 5 |
| pmean | 7 | 7 | 7 | 6 | 6 | 6 |
| Cstat | 77 | 75 | 77 | 76 | 76 | 77 |
| plat | 0 | 0 | 0 | 0 | 0 | 0 |
| Ti | 1 | 1.1 | 1.3 | 1.5 | 1.9 | 2.5 |
| TE | 3 | 3.2 | 3.8 | 4.5 | 5.6 | 7.5 |
| I:E | 1to3 | 1 to 3. | 1 to 3 | 1.3 | 1 to 3 | 1 to 3 |
| Insp flow | 30 | 28 | 24 | 20 | 16 | 12 |
| Exp flow | 35 | 35 | 34 | 34 | 33 | 33 |
| Autopeep | ||||||
| Rexp | 4 | 4 | 4 | 4 | 4 | 4 |
The information in this table and graph below is actually in the table above. It is restated here as a way of focusing on it.
| Rate | 15 | 14 | 12 | 10 | 8 | 6 |
| Total Cycle Time | 4 | 4.3 | 5 | 6 | 7.5 | 10 |
| Inspiratory Time | 1 | 1.1 | 1.3 | 1.5 | 1.9 | 2.5 |
| Expiratory Time | 3 | 3.2 | 3.8 | 4.5 | 5.6 | 7.5 |
How does rate change effect total cycle time? Remember that the inspiratory time % knob is being held constant at 25%. How does the rate change effect Inspiratory and Expiratory time? Does the I:E ratio change?
| Rate | 6 | 8 | 10 | 12 | 14 | 15 |
| Inspiratory Flow rate | 12 | 16 | 20 | 24 | 28 | 30 |
How does rate change effect the Inspiratory Flow rate?
| Inspiratory Time | 1 | 1.1 | 1.3 | 1.5 | 1.9 | 2.5 |
| Inspiratory Flow rate | 12 | 16 | 20 | 24 | 28 | 30 |
Now lets return to our questions
- Did the inspiratory flow wave form shape change?
- Did the peak flow change?
- Did the Inspiratory time change?
- Did the expiratory time change?
- Will the I:E ratio change?
no,it didnt. Why?
You bet it did. Did it increase or decrease?
Yes. How does decreasing the rate effect inspiratory time? How does increasing the rate effect inspiratory time. What are the implications for a patient.
Imagine if you will, that you are working in the ICU and get orders to change the patients ventilator control rate. So you make the change. But you didn't just change the rate did you? In fact, you changed the inspiratory time and the time available to exhale. You also changed the patients I:E ratio, all with just one adjustment.
Not having adequate inspiratory flow can be exceptionally distressing for a patient.
Yes. How does decreasing the rate effect expiratory time? How does increasing the rate effect expiratory time.
you tell me