BSNC 2000 - Module 2 Questions with Complete Solutions
3 views 0 purchase
Course
Bscn
Institution
Bscn
Factors affecting alveolar gas exchange Correct Answer-- composition of inspired air
- ventilation
- pulmonary perfusion
- alveolar-capillary diffusion
Alveolar-capillary diffusion Correct Answer-The movement of oxygen from the alveoli into the caparillies and the movement of CO2 from the c...
BSNC 2000 - Module 2 Questions with Complete Solutions
Factors affecting alveolar gas exchange Correct Answer-- composition of inspired air
- ventilation - pulmonary perfusion - alveolar-capillary diffusion
Alveolar-capillary diffusion Correct Answer-The movement of oxygen from the alveoli into the caparillies and the movement of
CO2 from the capillaries into the alveoli
Factors affecting alveolar-capillary diffusion Correct Answer-- surface area
- pressure gradient - diffusion distance
Ventilation Correct Answer-Movement of air in and out of the lungs
Factors affecting ventilation Correct Answer-- airway resistance - neuromuscular function - lung and chest compliance (how easily they can inflate)
Pulmonary perfusion Correct Answer-The movement of blood through the pulmonary vasculature
Factors affecting pulmonary perfusion Correct Answer-- blood vessel patency (state of being open or unobstructed)
- central perfusion
Factors affecting arterial oxygen content Correct Answer-- alveolar gas exchange - oxygen bound to Hb
Factors affecting cardiac output Correct Answer-- heart rate - stroke volume
Factors affecting oxygen supply Correct Answer-- arterial oxygen content - cardiac output
Affects oxygen demand Correct Answer-- metabolic demand Factors affecting metabolic demand Correct Answer-- temperature
- stress (perceived/physiologic)
- physical activity
Determinants of O2 supply affected by COPD Correct Answer--
increase airway resistance (ventilation)
- capillary destruction (pulmonary perfusion)
- decrease surface area (alveolar-capillary diffusion)
Combined effect on alveolar gas exchange: PaO2 and consequently Sa O2 are lowered, leading to reduced arterial oxygen content
Compensatory mechanisms for reduced arterial oxygen content (COPD) Correct Answer-- increase respiration rate and WOB (ventilation)
- increase RBC synthesis and Hct (oxygen bound to Hb)
- increase HR, contractility, and BP (cardiac output)
All increase oxygen supply - rest (physical activity)
Decrease oxygen demand
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller cracker. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
