Changes in systemic and pulmonary blood flow distribution in normal adult volunteers in response to posture and exercise: a phase contrast magnetic resonance imaging study

Table 2 Pulmonary blood vessel phase contrast data

	Prone ± SD (mL/min/m²)	Supine ± SD (mL/min/m²)	Percentage change between prone and supine (p)	Exercise ± SD (mL/min/m²)	Percentage change between exercise and supine at rest (p)
RPA	1855 ± 304	1,996 ± 274	6.8 (0.37)	3,691 ± 554	84.1 (<0.0001)
LPA	1,687 ± 283	1,592 ± 266	−6.0 (0.43)	3,248 ± 463	102.4 (<0.0001)
RUPV	968 ± 211	932 ± 185	−3.8 (0.83)	1,516 ± 326	61.6 (<0.0001)
RLPV	1,071 ± 217	917 ± 196	−16.8 (0.08)	2,157 ± 394	133.9 (<0.0001)
LUPV	868 ± 188	1,089 ± 153	20.3 (0.002)	1,842 ± 394	68.6 (<0.0001)
LLPV	970 ± 203	973 ± 315	0.003 (1.00)	2,094 ± 340	115 (<0.0001)

Blood flow indexed to body surface area under the three conditions—supine at rest, prone at rest, and supine under exercise. For individuals who had a separate insertion of the right middle pulmonary vein (RMPV) to the left atrium, the flow volume calculated was incorporated into the total volume of the RLPV
RPA right pulmonary artery, LPA left pulmonary artery, RUPV right upper pulmonary vein, RLPV right lower pulmonary vein, LUPV left upper pulmonary vein, LLPV left lower pulmonary vein

ISSN: 1880-6562