The Six Minute Walk Distance (6MWD) test can provide prognostic information about a patient with primary pulmonary hypertension (PPH).
Parameters:
(1) total distance walked in meters
(2) change in arterial oxygen saturation in percent
change in arterial oxygen saturation in percent =
= (oxygen saturation at baseline in percent) - (oxygen saturation at maximum distance)
Parameter |
Finding |
Points |
total distance walked |
>= 332 meters |
0 |
|
< 332 meters |
1 |
change in oxygen saturation |
< 9% |
0 |
|
>= 10% |
1 |
where:
• Miyamoto et al identified <= 300 meters as the cutoff for increased mortality.
number of prognostic factors =
= SUM(points for the 2 parameters)
Interpretation:
• minimum score: 0
• maximum score: 2
• A patient with 1 or 2 risk factors has a worse prognosis than a patient with none.
Purpose: To evaluate a patient with primary pulmonary hypertension using the 6 minute walk distance (6MWD) test.
Specialty: Sports Medicine & Rehabilitation
Objective: severity, prognosis, stage
ICD-10: I27.0,