Skip to main content
. Author manuscript; available in PMC: 2014 Jun 25.
Published in final edited form as: Am J Obstet Gynecol. 2012 Dec 7;208(2):153.e1–153.13. doi: 10.1016/j.ajog.2012.11.043

Figure 2. Stroke volume and cardiac output as a function of gestational age in the presence of increased placental vascular impedance to flow.

Figure 2

Stroke volume (SV) and cardiac output (CO) calculations in fetuses with an umbilical artery pulsatility index > 95th percentile (ABN) were compared to 184 normal fetuses (NL)40 (A: left ventricular SV; B: right ventricular SV; C: left ventricular CO; D: right ventricular CO). Mean SV (adjusted for gestational age) (mL) was lower for both the left ventricle (ABN: 0.53 vs. NL: 0.86; p < 0.0001) and right ventricle (ABN: 0.71 vs. NL: 0.92 ; p < 0.0001). Similarly, mean cardiac output (adjusted for gestational age) (mL/min) was lower for both the left ventricle (ABN: 71.9 vs. NL: 119.6; p < 0.0001) and right ventricle (ABN: 96.0 vs. NL: 127.5; p < 0.0001)