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Table 2 Correlation of cardiac output (CO) and pulmonary vascular resistance (PVR) as determined by right heart catheterization (RHC) and established methods of echocardiographic determination[4, 5, 8]

From: Estimation of cardiac output and pulmonary vascular resistance by contrast echocardiography transit time measurement: a prospective pilot study

Method of calculation

RHC measured Mean ± SD

ECHO calculated Mean ± SD

Correlation

P value

CO-Huntsman (L/min)

6.17 ± 1.37

4.34 ± 1.47

0.152

0.204

PVR-Abbas (TRV/RVOT × 10) Wood Units

1.44 ± 1.07

1.59 ± 0.71

0.182

0.181

PVR-Haddad (SPAP/(RVOT VTI×HR)) Wood Units/m 2

0.72 ± 0.52

0.26 ± 0.15

0.158

0.216