O2 therapy, b/c not all gas exchange units are effected
What is shunting?
When blood passes thru pul circulation without participating in gas exchange
Failure of utilization occurs w/___ and means
Septic shock; o2 is delivered to cells but not extracted
Pathophys of ARDS
increased pulmonary capillary membrane permeability, destruction of elastin and collagen, and microemboli and pulmonary artery vasoconstriction. The fluid in the caps leave the caps and fill up the alveoli
Define refractory hypoxemia
As you increase FiO2, the PaO2 goes down. Hallmark of ARDS
Classic symptom of ARDS
Classic tx for ARDS
PEEP. PEEP holds alveoli open and pushes fluid back into circulation. They can be on higher levels of PEEP (like 10 cms). Also tx w/vasopressors to maintain MAP.
First week: injury, then pul edema, atelectasis. V/Q mismatch. Then, lungs become fibrous and decreased compliance.
White out/White lung is a late manifestation of
ARDS; early CXR look normal or have a few infiltrates
If infants reach original due date and still having problems breathing they're dx w/
Sudden progressive form of respiratory failure; stands for Adult Resp Distress Syndrome