Table 1.

Right and left atrial dynamics

		Left atrium				Right atrium
		Exam A	Exam B	Exam C	P value a	Exam A	Exam B	Exam C	P value a
Atrial function	Volumetric index (%)
Reservoir; global	EF Total	66.3 ± 7.5	64.8 ± 5.8	68.8 ± 8.4	0.09	55.0 ± 9.6	54.5 ± 9.6	54.4 ± 6.3	0.68
Conduit	EF Passive	45.8 ± 7.5	45.2 ± 7.7	46.7 ± 9.8	0.62	34.2 ± 8.6	32.2 ± 8.3	30.9 ± 5.6	0.16
Booster pump	EF Booster	38.3 ± 7.5	35.6 ± 7.9	41.9 ± 7.6	0.40	32.4 ± 8.5	33.3 ± 9.1	34.0 ± 7.6	0.26
	Strain (%)
Reservoir	εs	31.8 ± 5.4	31.5 ± 5.3	31.3 ± 4.8	0.16	34.0 ± 9.5	34.6 ± 7.9	33.9 ± 6.7	0.41
Conduit	εe	24.2 ± 5.6	23.7 ± 5.2	23.3 ± 4.9	0.16	22.2 ± 6.8	22.8 ± 5.3	22.6 ± 4.4	0.78
Booster pump	εa	7.6 ± 3.1	7.7 ± 3.0	7.9 ± 2.7	0.77	11.8 ± 4.4	11.8 ± 4.4	11.3 ± 4.0	0.40
	Strain Rate (s −1 )
Reservoir	SRs	1.2 ± 0.2	1.2 ± 0.3	1.3 ± 0.3	0.91	1.3 ± 0.4	1.3 ± 0.3	1.4 ± 0.5	0.67
Conduit	SRe	−1.6 ± 0.4	−1.4 ± 0.3	−1.4 ± 0.3	0.06	−0.9 ± 0.3	−0.9 ± 0.3	−1.1 ± 0.4	0.18
Booster pump	SRa	−0.9 ± 0.4	−0.9 ± 0.4	−1.0 ± 0.4	0.56	−1.2 ± 0.7	−1.1 ± 0.6	−1.2 ± 0.7	0.98
	Atrial volume (ml)
	Maximum	66.0 ± 16.2	67.0 ± 15.4	64.9 ± 17.8	0.55	80.0 ± 23.1	80.9 ± 24.3	78.7 ± 23.1	0.79
	Minimum	22.6 ± 8.6	23.8 ± 7.6	21.2 ± 11.1	0.03b	37.1 ± 15.5	37.9 ± 16.3	36.5 ± 13.2	0.68
	Prior to atrial contraction	36.1 ± 11.4	36.9 ± 10.7	35.8 ± 15.8	0.46	53.7 ± 19.8	55.6 ± 21.2	54.4 ± 17.0	0.42

Comparison of left and right atrial functional parameters between the repeated measurements. Values are given as mean ± standard deviation.

^a as derived from one-way ANOVA for repeated measures across the Exams A, B and C.

^b Significance between Exam A and Exam B (p = 0.03), as derived from one-way ANOVA for repeated measures with Bonferroni post hoc testing.

ε, strain; SR, strain rate; EF, emptying fraction.