Discriminant Function of van Dijk et al for Identifying Pulmonary Hypertension in a Child with Congenital Heart Disease Using Doppler Ultrasonography

 

Parameters:

(1) maximal deceleration in m per second squared

(2) mean acceleration in m per second squared

(3) preejection period corrected for heart rate = preejection period divided by the SQRT(RR interval) in millseconds^(-0.5)

 

DF =

= 3.79 + (0.24 * (maximal deceleration)) - (0.38 * (mean acceleration)) + (0.58 * (preejection period divided by SQRT of the RR interval))

DF	Pulmonary Hypertension
< 0	present
0	indeterminate
> 0	absent

 

Performance:

• The positive predictive value was reported as 92% and negative predictive value 90%.

 

If data from Table 8 is entered into the equation as written, then the results make no sense. A typographical error is suspected.