Table 2. Echocardiographic Characteristics.

Parameters	Mean ± SD	Percentile					Min	Max
		5	25	50	75	95
r E, cm/s a	0.57 ± 0.08	0.44	0.52	0.57	0.62	0.7	0.4	0.8
r A, cm/s	0.44 ± 0.08	0.32	0.37	0.43	0.5	0.59	0.23	0.65
rEDT, m/s	210 ± 42	176	188	200	210	308	126	418
r E/A	1.32 ± 0.2	1	1.2	1.3	1.4	1.7	0.93	1.84
r E/Ea	410 ± 35	351	382	414	437	460	306	522
E/E, TV	4.6 ± 0.9	1.6	4	4.6	5.2	6.4	0.6	7.2
IVCT peak	12 ± 0.6	8	10	12	13	18	5	18
Sa peak, cm/s	13.5 ± 0.2	10	12	13	15	17	9	20
Ea peak, cm/s)	15.7 ± 0.15	9	11	12	14	24	6	26
Aa peak, cm/s	15 ± 0.14	8	10	12	15	24	5	25
IVA, cm/s	34.5 ± 8	22	28	34	40	46	18	69
S duration, m	276 ± 26	237	262	274	291	319	192	363
r IVRT, m/s	24 ± 15	0	15	23	31	61	0	80
r Q –Ea, m/s	397 ± 34	342	374	400	416	462	320	493
IVCT-Ea, m/s	346 ± 38	290	322	345	369	413	203	466
IVC, cm	1.4 ± 0.2	1.2	1.3	1.4	1.57	1.74	0.8	2
PAP, mmHg	23.5 ± 2.5	20	20	25	25	25	15	30

^aAbbreviations: r E ; tricuspid early diastolic velocity, r A; tricuspid late diastolic velocity, rEDT; tricuspid early diastolic deceleration time, r E/A ; the ratio of early to late tricuspid diastolic velocity, r E/Ea; ratio of early tricuspid diastolic velocity to early diastolic tricuspid annular velocity, Sa peak; tricuspid annular systolic velocity; Ea peak; tricuspid annular early diastolic velocity, Aa peak;tricuspid annular late diastolic velocity, IVA; the acceleration time of isovolumetric contraction, S duration; duration of tricuspid annular systolic velocity, r IVRT; right ventricular isovolumetric relaxation time; r Q –Ea :time interval form the beginning of QRS complex to the beginning of early tricuspid annular diastolic velocity; IVCT-Ea, time interval from the beginning of the isovolumetric relaxation time to the beginning of early tricuspid annular diastolic velocity, IVC; inferior vena cava, PAP; pulmonary artery pressure.