3. Oxygen Transport System and Exercise Flashcards
What is OTS, and what is a disruption considered?
Basis for life, multi-step process. Impairments can happen at any point and cause a medical emergency
What is perfusion in relation to OTS?
The amount of blood to the lungs that then goes to the body
What is the role of myocardial function in relation to OTS?
CO to generate good flow and pressure
What is a possible complication of peripheral circulation in regards to OTS?
Pressure and possible blockages
How much oxygen do tissues extract from the blood at rest?
23% of available oxygen
How does HR, SBP, and DBP respond typically to exercise?
- HR quickly increases and levels off
- SBP increases at low rate
- Diastole will slightly increase
Why was the Borg scale developed?
To correlate with HR
What is a 1 on the dyspnea scale?
Mild, noticeable to patient but not to the observer
What is a 2 on the dyspnea scale?
Mild, some difficulty is noticeable to the observer
What is a 3 on the dyspnea scale?
Moderate difficulty but can continue with activity
What is a 4 on the dyspnea scale?
Severe difficulty, patient cannot continue with activity
What is the effect of beta blockers at rest and during exercise?
Keeps HR lower at rest and has a blunted response during exercise
