Table 1.

Systemic arterial pressures, heart rate, and functional assessments of the pulmonary artery and right ventricle in term and preterm‐born 14.5‐month‐old male sheep

	Term	Preterm
Systolic arterial pressure (mmHg)	119.7 ± 5.9	113.3 ± 23.0
	(110–125)	(94–151)
Diastolic arterial pressure (mmHg)	63.2 ± 7.5	67.8 ± 13.1
	(54–76)	(48–85)
Mean arterial pressure (mmHg)	88.2 ± 5.7	89.5 ± 11.8
	(82–96)	(78–111)
Heart rate (beats min−1)	88.2 ± 29.2	90.2 ± 15.0
	(60–136)	(75–119)
Main pulmonary artery diameter (cm)	1.91 ± 0.4	1.74 ± 0.3
	(1.4–2.4)	(1.4–2.1)
Main pulmonary artery peak systolic flow (cm s−1)	86.8 ± 10.8	73.6 ± 6.2*
	(76.2–107.3)	(63.1–83.2)
RV stroke volume (mL)	63.8 ± 27.8	48.4 ± 17.9
	(32.3–94.3)	(24.9–79.1)
RV relative stroke volume (mL kg−1)	1.01 ± 0.4	0.90 ± 0.5
	(0.57–1.48)	(0.41–1.86)
RV output (L min−1)	5.1 ± 2.3	4.1 ± 1.7
	(2.0–7.3)	(2.1–7.0)

Data shown as mean ± SD (range). ^* P = 0.02 versus term group.