intro to cardio and pulmonary PT Flashcards
1
Q
What is DO2
A
oxygen delivery
2
Q
what is the DO2 based on?
A
demands of tissues
3
Q
at rest, DO2 is ________ times greater than actual demand
A
3-4
4
Q
what is diffusion?
A
transfer of oxygen from alveolar sacs to pulmonary circulation
5
Q
what directly affects membrane diffusion?
A
surface area and thickness
6
Q
what is perfusion?
A
the act of the body delivering blood to capillary beds
7
Q
what has the greatest influence on O2 transport?
A
gravity, increased exercise, centilation, CO, and tissue utilization
8
Q
what are some external signs of O2 transport dysfunction?
A
shortness of breath, pale skin
9
Q
what are some internal signs of O2 transport dysfunction?
A
vital signs, hypoxia, poor peripheral circulation, decreased capillary refill
