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Six Minute Walk Test MD Calc

MDCalc Formula:

\[ Predicted\ D = (7.57 \times H) - (5.02 \times A) - (1.76 \times BMI) - 309 \]

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1. What is the Six Minute Walk Test?

The Six Minute Walk Test is a simple exercise test that measures the distance a person can walk quickly on a flat, hard surface in six minutes. It evaluates functional exercise capacity and is commonly used in cardiopulmonary rehabilitation.

2. How Does the Calculator Work?

The calculator uses the MDCalc formula:

\[ Predicted\ D = (7.57 \times H) - (5.02 \times A) - (1.76 \times BMI) - 309 \]

Where:

Explanation: This equation predicts the expected 6-minute walk distance based on height, age, and BMI, providing a reference value for comparison with actual test results.

3. Importance of Predicted Distance Calculation

Details: Calculating predicted distance helps clinicians assess patient performance relative to expected norms, monitor progress in rehabilitation, and evaluate treatment effectiveness in cardiopulmonary conditions.

4. Using the Calculator

Tips: Enter height in centimeters, age in years, and weight in kilograms. All values must be valid positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a normal 6-minute walk distance?
A: Normal values vary by age, gender, height, and weight. Generally, healthy adults walk 400-700 meters in 6 minutes.

Q2: How is BMI calculated in this formula?
A: BMI is calculated as weight in kilograms divided by height in meters squared (kg/m²).

Q3: Who should take the 6-minute walk test?
A: Patients with cardiopulmonary diseases, those undergoing rehabilitation, and individuals being evaluated for functional capacity.

Q4: What factors can affect walk test results?
A: Motivation, practice effect, comorbidities, medications, and environmental conditions can all influence test performance.

Q5: How should results be interpreted?
A: Results should be compared to predicted values and previous tests. Significant deviations may indicate functional impairment or treatment response.

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