Forced Vital Capacity and Forced Expiratory Volume in Physical Exams

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What does the forced vital capacity (FVC) measure in the physical exam?

The maximum air expelled after a deep inhalation (correct)

The amount of air exhaled during maximal and rapid exhalation

The volume of air exhaled in the first second of forced expiration

The amount of air expelled during specific time intervals

Which lung condition is associated with a low Forced Expiratory Volume at one second (FEV1)?

Restrictive lung disease

Healthy lungs

Obstructive pulmonary disease (correct)

Normal aging process

According to AF standards, when are abnormal lung functions present?

When FEV1/FVC ratio is less than 70% (correct)

When FVC is less than 70% of predicted

When FVC is less than 80% of predicted

When FEV1 is less than 90% of predicted

What must the examinee do before the forced expiration during testing?

Inhale fully Signup and view all the answers

How long should the examinee continue to exhale during the test?

Until a plateau in the volume-time curve is seen Signup and view all the answers

What should be done with tracings that show significant variation between the two largest FVCs?

Reject them Signup and view all the answers

What happens to the cells in the heart during depolarization?

They become charged positively Signup and view all the answers

Where is the atrioventricular (AV) node located?

In the interatrial septum above the tricuspid valve Signup and view all the answers

What is the function of the AV node in the heart's electrical conduction system?

To delay the impulse momentarily Signup and view all the answers

What role do the Purkinje fibers play in the heart's electrical conduction system?

Completing the pathway through the ventricular walls Signup and view all the answers

How does the size of the left ventricle relate to the Purkinje network?

The left ventricle has a more elaborate Purkinje network Signup and view all the answers

What happens to the cells within the ventricles when they are stimulated?

They contract simultaneously Signup and view all the answers

What is visual acuity?

The eyes' ability to distinguish an object's shape and details Signup and view all the answers

How is visual acuity typically assessed?

By identifying the smallest identifiable object seen at a specified distance Signup and view all the answers

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 Signup and view all the answers

Why are accurate measurements of visual acuity important?

For proper patient treatment, medical, and legal reasons Signup and view all the answers

What is the purpose of glasses or contacts for vision correction?

To correct astigmatism and nearsightedness Signup and view all the answers

When should visual acuities be checked?

As part of a regular eye examination Signup and view all the answers

What is the main function of the pupil?

To regulate the amount of light entering the eye Signup and view all the answers

How does a constricted pupil affect visual acuity?

It reduces visual acuity by not permitting straight light rays to enter. Signup and view all the answers

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 Signup and view all the answers

How does age affect visual acuity according to the text?

Causes a decline in vision from birth Signup and view all the answers

What impact does a short time of exposure to an object have on visual acuity?

Reduces visual acuity by sending less information for analysis Signup and view all the answers

How do abnormalities in the ocular media affect visual acuity?

Reduce visual acuity Signup and view all the answers

What is the next step after transferring the swab from the wound to the culture tube?

Redress the wound with sterile dressing supplies Signup and view all the answers

What should be done after squeezing the ampule in the bottom of the tube?

Insert the swab into the solution and wet it thoroughly Signup and view all the answers

What should be gathered when preparing for a venipuncture procedure?

Test tubes with proper color for tests ordered by physician Signup and view all the answers

What should be used to possibly diagnose a patient with a suspected pulmonary disorder?

Sputum Signup and view all the answers

What follows after redressing the wound with sterile dressing supplies?

Doff gloves and perform hand hygiene Signup and view all the answers

What is typically included in a venipuncture tray provided by your unit?

Equipment needed for venipuncture procedure Signup and view all the answers