Age dependence of pulmonary artery blood flow measured by 4D flow cardiovascular magnetic resonance: results of a population-based study

Table 4 Parameters of pulmonary flow

	Group 1 (20–39y.) n = 43	Group 2 (40–59y.) n = 44	Group 3 (60–80y.) n = 39	F(2,375)	p-value
V_max, m/s(±SD)
MPA	0.88 ± 0.17	0.88 ± 0.16	0.95 ± 0.29	1.86	0.175
LPA	0.85 ± 0.26	0.70 ± 0.16	0.65 ± 0.23	17.74	<0.001*
RPA	0.91 ± 0.18	0.79 ± 0.15	0.78 ± 0.23	9.22	0.003*
AAo	0.71 ± 0.16	0.58 ± 0.15	0.46 ± 0.14	55.34	<0.001*
V_avg, m/s(±SD)
MPA	0.23 ± 0.04	0.23 ± 0.04	0.23 ± 0.07	0.68	0.795
LPA	0.23 ± 0.05	0.19 ± 0.03	0.18 ± 0.05	27.40	<0.001*
RPA	0.25 ± 0.05	0.23 ± 0.03	0.21 ± 0.05	21.97	<0.001*
AAo	0.25 ± 0.05	0.23 ± 0.04	0.21 ± 0.05	22.25	<0.001*
Q_max-sys, mL(±SD)
MPA	354.2 ± 98.7	344.3 ± 92.6	328.8 ± 93.2	1.46	0.229
LPA	170.4 ± 50.3	150.4 ± 45.6	133.5 ± 56.9	10.73	<0.001*
RPA	186.4 ± 48.5	173.4 ± 44.6	157.3 ± 41.2	8.60	0.004*
AAo	398.5 ± 128.6	343.1 ± 113.6	327.1 ± 85.2	8.39	0.004*
Q_max-dia, mL(±SD)
MPA	52.1 ± 18.53	38.6 ± 15.62	29.4 ± 11.17	43.97	<0.001*
LPA	35.0 ± 11.83	22.2 ± 9.04	13.4 ± 8.5	96.55	<0.001*
RPA	28.1 ± 10.78	20.5 ± 9.71	17.1 ± 8.83	25.48	<0.001*
AAo	33.9 ± 14.46	29.5 ± 10.74	18.6 ± 8.07	36.26	<0.001*
Q_mean, mL/cycle(±SD)
MPA	79.72 ± 19.41	74.89 ± 17.12	71.65 ± 13.87	4.59	0.034*
LPA	39.01 ± 8.11	33.35 ± 7.76	29.58 ± 8.04	28.04	<0.001*
RPA	43.07 ± 11.05	39.86 ± 8.68	37.04 ± 8.06	8.44	0.004*
AAo	82.21 ± 20.96	73.39 ± 15.64	66.48 ± 13.93	17.13	<0.001*
RF, %(±SD)
MPA	3.41 ± 2.74	2.09 ± 1.29	2.43 ± 1.76	4.75	0.031*
LPA	2.58 ± 1.65	1.48 ± 1.28	2.03 ± 2.13	2.16	0.144
RPA	1.49 ± 1.20	0.95 ± 0.79	1.66 ± 1.42	0.45	0.504
AAo	1.20 ± 1.12	1.34 ± 1.05	2.25 ± 2.77	7.08	0.009*
CO, L/min(±SD)	5.33 ± 1.56	4.77 ± 0.99	4.39 ± 1.08	11.90	<0.001*

Peak (V_max) and mean (V_avg) velocities, peak systolic (Q_max-sys) and diastolic (Q_max-dia) antegrade flow volumes, mean flow volume per cardiac cycle (Q_mean), fraction of retrograde flow (RF), and cardiac output (CO) as measured in the AAo. SD standard deviation. *statistically significant

ISSN: 1532-429X