Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

2 Pulm: ARDS

Step Up to Medicine, Chap 2: Pulmonary, ARDS

3 pieces of info needed to determine underlying mechanism of hypoxemia? 1. PaCO2 level 2. A-a gradient 3. Response to supplemental oxygen
Definition of hypoxia. PaO2 <60 or PaCO2 >50 (hypercapnia).
Hypoxia or hypercapnea?: V/Q mismatch Hypoxia withOUT hypercapnea (CO2 levels low or normal)
Hypoxia due to a shunt is/is not responsive to supplemental oxygen. Is NOT
How does the A-a gradient help distinguish between different causes of hypoxemia? If hyperventilation is the cause, A-a gradient will be normal. In most other causes, A-a gradient will be increased.
Which pts have the highest risk of developing ARDS? Sepsis or septic shock
What is the key pathophysiologic event in ARDS? Massive intrapulmonary shunting of blood--> severe hypoxemia with no significant improvement on 100% O2. Shunting is 2/2 widespread atelectasis, collapse of alveoli, and surfactant dysfunction
Classical criteria for diagnosing ARDS? *Hypoxemia refractory to oxygen therapy (ratio of PaO2/FiO2 </= 100) *Bilateral diffuse pulmonary infiltrates on CXR *No evidence of CHF: PCWP </= 18mmHg
Where should the tip of the ET tube be in relation to the carina? 3-5cm above the carina
Minute ventilation formula? Minute ventilation= RR x Tidal volume
Normal I:E ratio used in ventilators? 1:2 (twice as much time spent in expiration as in inspiration)
Definition of pulmonary HTN? Mean arterial pulmonary pressure >25mmHg at rest or >30mmHg during exercise
CXR findings in primary pulmonary HTN? Enlarge central pulmonary aa, enlarged RV, and clear lung fields. PFTs show restrictive pattern. EKG shows R axis deviation and RV hypertrophy.
Tx for primary pulmonary HTN? Pulmonary vasodilators (IV prostacyclins/epoprostenol and CCBs), anticoagulation with warfarin, and lung transplantation (optional)
Definition of cor pulmonale? RV hypertrophy with eventual RV failure resulting from pulmonary HTN 2/2 pulmonary disease
MCC cor pulmonale? COPD
Nature of the A-a gradient in PE? Elevated
Situations in which pts with PE should be considered as candidates for treated with thrombolytics (streptokinase, TPA)? 1. Massive PE + hemodynamic instability 2. Evidence of R heart failure (thrombolysis can reverse this)
MCC of hemoptysis? Bronchitis (50% of cases)
Created by: sarah3148



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards