Table 2.

Correlations between RHC parameters and CABs

Parameter		Measurement site
RHC	CABs	3L		V4
		r	p	r	p
Mean PAP (mmHg)	S1Intensity	0.075	0.646	0.075	0.647
	S2Intensity	0.253	0.116	0.255	0.113
	S3Intensity	0.206	0.202	0.277	0.084
	S4Intensity	0.220	0.185	0.261	0.108
	S1Complexity	− 0.014	0.933	− 0.094	0.565
	S2Complexity	0.300	0.060	0.426	0.006
	S3Strength	0.176	0.278	0.347	0.028
	S4Strength	0.196	0.238	0.070	0.674
PAWP (mmHg)	S1Intensity	− 0.164	0.313	− 0.090	0.579
	S2Intensity	0.038	0.817	0.090	0.583
	S3Intensity	0.276	0.085	0.344	0.030
	S4Intensity	0.104	0.534	0.145	0.379
	S1Complexity	− 0.077	0.636	− 0.178	0.272
	S2Complexity	0.031	0.850	0.083	0.611
	S3Strength	0.499	0.001	0.581	< 0.001
	S4Strength	0.151	0.367	0.065	0.695
PVR (dynes s cm−5)	S1Intensity	0.074	0.651	0.115	0.479
	S2Intensity	0.182	0.261	0.193	0.233
	S3Intensity	0.026	0.876	0.124	0.447
	S4Intensity	0.172	0.301	0.233	0.154
	S1Complexity	− 0.073	0.653	− 0.155	0.339
	S2Complexity	0.398	0.011	0.474	0.002
	S3Strength	− 0.063	0.700	0.074	0.652
	S4Strength	0.238	0.150	0.177	0.283
CI (l/min/m2)	S1Intensity	0.318	0.049	0.256	0.116
	S2Intensity	0.177	0.281	0.153	0.353
	S3Intensity	0.031	0.852	− 0.041	0.803
	S4Intensity	0.077	0.653	0.109	0.516
	S1Complexity	0.193	0.239	0.347	0.031
	S2Complexity	0.042	0.799	0.046	0.779
	S3Strength	− 0.207	0.207	− 0.298	0.066
	S4Strength	− 0.157	0.354	− 0.054	0.748

RHC right heart catheterization, CABs cardiac acoustic biomarkers, mean PAP mean pulmonary arterial pressure, PAWP pulmonary artery wedge pressure, PVR pulmonary vascular resistance, CI cardiac index