Oxygenation Flashcards
The ability of the cardiovascular system to pump oxygenated blood to the tissues and return deoxygenated blood to the lungs
Perfusion
The process of moving gases
Ventilation
Exchange of respiratory gases in the alveoli and capillaries
Diffusion
The effort required to expand and contract the lungs
Work of breathing
Chemical produced in the lungs to maintain the surface tension of the alveoli and keep them from collapsing
Surfactant
Collapse of the alveoli that prevents the normal exchange of oxygen and carbon dioxide
Atelectasis
Active process stimulated by chemical receptors in the aorta.
Inspiration
A passive process that depends on the elastic recoil properties of the lungs, requiring little or no muscle work.
Expiration
Blue discoloration of the skin and mucous membranes. Late sign of hypoxia
Cyanosis
Inadequate tissue oxygenation at a cellular level
Hypoxia
Caused by electrical impulses that do not originate from the SA node
Dysrhythmias
Primary function is to move blood to and from the alveolar capillary membrane for gas exchange
Pulmonary Circulation
Carrier of oxygen and carbon dioxide. Transports most oxygen
Hemoglobin
Deoxygenated blood is delivered to
Right side of heart then to lungs
Oxygenated blood travels from
The lungs to the left side of the heart where the oxygenated blood travels to tissues
Where do impulses originate and at what rate?
SA node at a rate of 75 cardiac action potentials/ min
What factors affect oxygenation?
Physiological, developmental, lifestyle and environmental
What are physiological factors that affect cardiopulmonary functioning?
Respiratory such as hyper hypo ventilation and hypoxia.
Cardiovascular such as disturbances in conduction, impaired valve function , myocardial hypoxia.
Nasal cannula starts at what percentage of O2 and goes up how much?
Starts at 24% and goes up 2%
What is the amount of FIO2 taken in?
21%
In right sided heart failure what symptoms would you see?
Edema in periphery
What is the term for too much CO2?
Hypercapnia
SpO2 what interferes with light transmission?
Outside light source, carbon monoxide (smoke inhalation or poisoning), patient motion, jaundice, intravascular dyes, nail polish, dark skin pigment
SpO2 factors interfering with arterial pulsations?
Atherosclerosis, hypothermia at assessment site, pharmalogical vasoconstrictors, low cardiac output, hypotension, peripheral edema, tight probe
