Anyone have any good critical care questions to quiz me on? - Page 3Register Today!
- Ohh please let's keep this going. I'm studying for the CCRN and this is a fun way to do it. I'll go next...
In a vented patient, how would you anticipate the vent settings be changed for the following
- PaO2 is 55
- Pa02 is 120
- CO2 is 30
- CO2 is 55
Hint to help you remember for testing: you change TV and/or RR when there is an abnormality in ___ and change FiO2 and/or PEEP when there is an abnormality in ____
Last edit by fiveofpeep on Jan 6, '12 : Reason: weird formatting
- i just came up with another one for my study buddy and thought i'd share...
in a patient with pulmonary embolus the rap/cvp would be (increase/decrease/normal), the pap would be (increase/decrease/normal), and the paop would be (increase/decrease/normal)
- Jan 6, '12 by CVmursenaryi think rap and pap would be elevated and the wedge would be elevated but not reflect left atrial preload correctly?
- Quote from PetERNurseKeep it simple. This is straight from the Pass CCRN book without elaboration.The answer to these depends on what the current vent settings are and full assessment of ABG taking disease process into account.
As a general rule if oxygen is altered you can change the FiO2 and/or PEEP to correct it. If the CO2 is altered you can change the TV and/or RR.
Remember, this is all very general. I just liked how they laid it out that way because it helped me keep it straight better.
So for low oxygen you could increase the FiO2 and/or PEEP (obviously depending on what it was before and if the patient is at risk for barotrauma)
If oxygen is high you could decrease FiO2 and/or come down on the PEEP if you need to.
If CO2 is low you can decrease the TV and/or RR to prevent less blowing off of CO2
If CO2 is high you can increase the TV and/or RR to increase CO2 elimination.
- Quote from CVmursenaryYou are correct in that the RAP and PAP would be elevated because of the pulmonary hypertension secondary to the PE and the relative RHF from the obstruction.i think rap and pap would be elevated and the wedge would be elevated but not reflect left atrial preload correctly?
The PAOP would not be elevated in a non-diseased heart because of the obstructed blood flow in the pulmonary vascular system secondary to the clot. There may even be a preload deficit in the left side because of this.
Once again this is a "textbook case" straight from Pass CCRN
- Jan 6, '12 by CVmursenarywhat if the wedge was behind the clot?, wouldnt it have a high reading?