Tissue Doppler derived biphasic velocities during the pre and post-ejection phases: patterns, concordance and hemodynamic significance in health and disease

Table 3 Correlations observed in our study

	HFpEF (n = 52)		HFrEF (n = 32)		Normal (n = 42)		Age matched Control (n = 26)
	r	p	R	p	r	P	r	p
PREp (mean) vs. POEn (mean)	0.561	< 0.001	0.421	0.018	0.521	< 0.001	0.786	< 0.001
PREn (mean) vs. POEp (mean)	0.425	0.005	0.611	< 0.001	0.253	0.107	0.419	0.042
PREp/PREn (PRE-P/N) vs. POEn/POEp (POE-N/P)	0.292	0.036	0.896	< 0.001	0.736	< 0.001	0.483	0.019
Versus E/e’
PREp (mean), (cm/s)	0.513	< 0.001	0.4	0.025	0.04	0.843	0.02	0.928
PREn (mean), (cm/s)	0.07	0.609	0.144	0.439	0.177	0.377	0.06	0.770
POEn (mean), (cm/s)	0.432	0.002	0.256	0.165	0.142	0.481	0.04	0.853
POEp (mean), (cm/s)	0.136	0.342	0.363	0.045	0.174	0.385	0.042	0.844
PREp/PREn (IC-P/N ratio)	0.55	< 0.001	0.54	0.002	0.20	0.315	0.06	0.774
POEn/POEp (IR-N/P ratio)	0.3	0.034	0.45	0.012	0.225	0.259	0.05	0.800
Versus EF
PREp (mean), (cm/s)	0.068	0.631	0.413	0.021	0.022	0.888	0.253	0.211
PREn (mean), (cm/s)	0.075	0.596	0.189	0.308	0.232	0.139	0.172	0.400
POEn (mean), (cm/s)	0.169	0.230	0.290	0.113	0.085	0.59	0.366	0.07
POEp (mean), (cm/s)	0.084	0.552	0.173	0.353	0.211	0.180	0.202	0.323
PREp/PREn (IC-P/N ratio)	0.116	0.414	0.230	0.222	0.225	0.152	0.103	0.631
POEn/POEp (IR-N/P ratio)	0.045	0.750	0.036	0.849	0.180	0.255	0.106	0.940

PREp positive pre-ejection, PREn negative pre-ejection, POEn negative post-ejection, POEp positive post-ejection

ISSN: 1476-7120