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. Author manuscript; available in PMC: 2017 Jun 1.
Published in final edited form as: Circ Heart Fail. 2016 Jun;9(6):10.1161/CIRCHEARTFAILURE.115.003011 e003011. doi: 10.1161/CIRCHEARTFAILURE.115.003011

Table 2.

Predictors of pulmonary vascular distensibility in all patients (n=151).

Parameter Correlation P-value
Age (years) −0.18 0.031
BMI (kg/m2) −0.02 0.83
Resting Parameters
VO2 (ml/kg/min)* −0.10 0.24
O2 pulse (ml/beat) 0.06 0.44
CI (L/min/m2) 0.06 0.49
RVEF 0.10 0.24
LVEF 0.16 0.06
Pulse Pressure (mmHg) −0.01 0.87
Parameters at Peak Exercise
VO2 (ml/kg/min) 0.40 <0.0001
O2 pulse (ml/beat) 0.35 <0.0001
CI (L/min/m2) 0.35 <0.0001
RVEF 0.36 <0.0001
LVEF 0.24 0.006
Pulse Pressure (mmHg) 0.42 <0.0001
Watts achieved 0.40 <0.0001
Lactate (mM) 0.25 0.006

Pearson's correlation used except where * indicated for Spearman's correlation.

BMI, body mass index; CI, cardiac index; DPG, diastolic pulmonary gradient

Unadjusted P–values are presented. 17 variables were tested and thus, when adjusting for multiple comparisons the threshold for significance is P<0.003.