30 Questions
What does the forced vital capacity (FVC) measure in the physical exam?
The maximum air expelled after a deep inhalation
Which lung condition is associated with a low Forced Expiratory Volume at one second (FEV1)?
Obstructive pulmonary disease
According to AF standards, when are abnormal lung functions present?
When FEV1/FVC ratio is less than 70%
What must the examinee do before the forced expiration during testing?
Inhale fully
How long should the examinee continue to exhale during the test?
Until a plateau in the volume-time curve is seen
What should be done with tracings that show significant variation between the two largest FVCs?
Reject them
What happens to the cells in the heart during depolarization?
They become charged positively
Where is the atrioventricular (AV) node located?
In the interatrial septum above the tricuspid valve
What is the function of the AV node in the heart's electrical conduction system?
To delay the impulse momentarily
What role do the Purkinje fibers play in the heart's electrical conduction system?
Completing the pathway through the ventricular walls
How does the size of the left ventricle relate to the Purkinje network?
The left ventricle has a more elaborate Purkinje network
What happens to the cells within the ventricles when they are stimulated?
They contract simultaneously
What is visual acuity?
The eyes' ability to distinguish an object's shape and details
How is visual acuity typically assessed?
By identifying the smallest identifiable object seen at a specified distance
What is the difference between visual acuity and visual efficiency?
Visual acuity refers to how comfortably one sees, while visual efficiency refers to how well one sees
Why are accurate measurements of visual acuity important?
For proper patient treatment, medical, and legal reasons
What is the purpose of glasses or contacts for vision correction?
To correct astigmatism and nearsightedness
When should visual acuities be checked?
As part of a regular eye examination
What is the main function of the pupil?
To regulate the amount of light entering the eye
How does a constricted pupil affect visual acuity?
It reduces visual acuity by not permitting straight light rays to enter.
What effect does too much light entering the eye have on the image sent to the brain?
Washes out photoreceptors and sends a poor image
How does age affect visual acuity according to the text?
Causes a decline in vision from birth
What impact does a short time of exposure to an object have on visual acuity?
Reduces visual acuity by sending less information for analysis
How do abnormalities in the ocular media affect visual acuity?
Reduce visual acuity
What is the next step after transferring the swab from the wound to the culture tube?
Redress the wound with sterile dressing supplies
What should be done after squeezing the ampule in the bottom of the tube?
Insert the swab into the solution and wet it thoroughly
What should be gathered when preparing for a venipuncture procedure?
Test tubes with proper color for tests ordered by physician
What should be used to possibly diagnose a patient with a suspected pulmonary disorder?
Sputum
What follows after redressing the wound with sterile dressing supplies?
Doff gloves and perform hand hygiene
What is typically included in a venipuncture tray provided by your unit?
Equipment needed for venipuncture procedure
This quiz covers the primary tests, forced vital capacity (FVC) and forced expiratory volume (FEV), measured in the physical exam arena. It includes information about how the measured values are compared against predicted normals based on sex, height, and age.
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