Physical Reconditioning and Exercise Prescription
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Questions and Answers

How is the initial target heart rate for most patients determined in the program?

  • Estimating it as 20 beats/min greater than resting rate
  • By considering the patient's age and weight
  • Using Karvonen's formula (correct)
  • Using the maximum heart rate formula

    • Why might some patients begin exercise reconditioning without a prescribed target heart rate?

  • Due to muscular weakness
  • Due to the severity of ventilatory impairment (correct)
  • Due to low exercise tolerance
  • Due to high resting heart rate

    • How is the target heart rate calculated using Karvonen's formula?

  • Target heart rate = [(MHR – RHR) × (50% - 70%)] + RHR (correct)
  • Target heart rate = (MHR – RHR) × (50% - 70%) - RHR
  • Target heart rate = MHR - RHR × 50%
  • Target heart rate = MHR + RHR × (50% - 70%)

    • What is the maximum heart rate formula mentioned in the text?

    <p>HRmax = 220 − (age in years)</p> Signup and view all the answers

    Why is a lower target heart rate usually calculated instead of exercising at the maximum heart rate?

    <p>It is hazardous to exercise at maximum heart rate for a prolonged time</p> Signup and view all the answers

    What is a good target exercise heart rate for a patient with COPD, based on the text?

    <p>126 beats/min</p> Signup and view all the answers

    What is the purpose of cardiopulmonary stress testing?

    <p>To evaluate the patient's response to exercise</p> Signup and view all the answers

    Why is obtaining informed consent crucial before cardiopulmonary stress testing?

    <p>To inform the patient about the risks and benefits</p> Signup and view all the answers

    What is the advantage of using a treadmill for exercise testing?

    <p>It mimics everyday walking tasks</p> Signup and view all the answers

    What is the purpose of analyzing the patient’s exhaled gases during exercise testing?

    <p>To provide information about energy expenditure and metabolism</p> Signup and view all the answers

    Why is the bicycle ergometer less practical for training muscles compared to a treadmill?

    <p>It doesn't mimic everyday walking tasks</p> Signup and view all the answers

    What does a ramp adjustment on a treadmill allow for?

    <p>Simulating uphill running conditions</p> Signup and view all the answers

    What happens when cardiopulmonary stress testing is stopped?

    <p>The patient cannot continue due to exhaustion or physiologic deterioration</p> Signup and view all the answers

    What is an important parameter measured during exercise testing?

    <p>Respiratory rate</p> Signup and view all the answers

    Why is it important to carefully evaluate the patient before, during, and after cardiopulmonary stress testing?

    <p>To reduce the risk inherent in the procedure.</p> Signup and view all the answers

    What type of system analyzes each exhaled breath during exercise testing?

    <p>A breath-by-breath system</p> Signup and view all the answers

    Study Notes

    Determining Target Heart Rate

    • Initial target heart rate for most patients is determined by a healthcare professional.
    • Some patients may begin exercise reconditioning without a prescribed target heart rate, possibly due to individual variability or medical conditions.

    Karvonen's Formula

    • Karvonen's formula is used to calculate target heart rate: (HRmax - HRrest) × %intensity + HRrest.
    • This formula takes into account maximum heart rate (HRmax) and resting heart rate (HRrest) to determine an individualized target heart rate.

    Maximum Heart Rate Formula

    • Maximum heart rate formula is 220 - age.

    Target Heart Rate for COPD Patients

    • A good target exercise heart rate for patients with COPD is 50-60% of their maximum heart rate.

    Cardiopulmonary Stress Testing

    • The purpose of cardiopulmonary stress testing is to assess the body's response to exercise and evaluate cardiovascular fitness.
    • Obtaining informed consent is crucial before cardiopulmonary stress testing to ensure the patient understands the risks and benefits.

    Exercise Testing Methods

    • Treadmill testing is advantageous because it allows for a more natural gait and simulates daily activities.
    • Analyzing exhaled gases during exercise testing helps assess oxygen consumption and carbon dioxide production.
    • The bicycle ergometer is less practical for training muscles compared to a treadmill because it only engages the legs.

    Treadmill Adjustments

    • A ramp adjustment on a treadmill allows for a gradual increase in exercise intensity.

    Stopping Exercise Testing

    • When cardiopulmonary stress testing is stopped, the patient is usually monitored for a period to ensure safety and recovery.

    Exercise Testing Parameters

    • An important parameter measured during exercise testing is oxygen consumption (VO2).

    Importance of Patient Evaluation

    • Careful evaluation of the patient before, during, and after cardiopulmonary stress testing is crucial to ensure safety and identify any potential health risks.

    Exhaled Gas Analysis

    • A metabolic cart system analyzes each exhaled breath during exercise testing to assess oxygen consumption and carbon dioxide production.

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    Description

    This quiz covers the physical reconditioning component of a program, focusing on the exercise prescription and determining the target heart rate using methods such as Karvonen’s formula. It also discusses considerations for patients with ventilatory impairment.

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