1) PRVC aims to give the target Tv with the least PIP, right? So in a patient with huge inspiratory efforts, as the pt will pull in tv without much pressure requirements from the vent, he is basically doing his own WOB without much vent assistance right?
This comes from a patient of mine who on PRVC with target Tv of 500 is pulling Tv of 700 (he is having a high minute vent requirement due to increased dead space from post sarcoidosis fibrocystic disease). The RT says the pip is 8, same as peep of 8 which is indicative of the fact that the machine is not giving any assistance as he is getting all his tv with 0 of pip (which is the least pressure in this case to achieve target volume). Is this all correct?
2) If all of that is correct, then what mode is his WOB least? Pressure support?
3) which leads to my final question. What is the difference in pressure support vs. pressure control? Flow cycled vs time cycled? What does that mean in practical terms?
4) obviously I need to read more on the intricacies of mech vent and the different modes. Suggested reading material?
Thanks a lot.
This comes from a patient of mine who on PRVC with target Tv of 500 is pulling Tv of 700 (he is having a high minute vent requirement due to increased dead space from post sarcoidosis fibrocystic disease). The RT says the pip is 8, same as peep of 8 which is indicative of the fact that the machine is not giving any assistance as he is getting all his tv with 0 of pip (which is the least pressure in this case to achieve target volume). Is this all correct?
2) If all of that is correct, then what mode is his WOB least? Pressure support?
3) which leads to my final question. What is the difference in pressure support vs. pressure control? Flow cycled vs time cycled? What does that mean in practical terms?
4) obviously I need to read more on the intricacies of mech vent and the different modes. Suggested reading material?
Thanks a lot.