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Cited by 347

The DOI matches its Crossref record; 13 of the 13 references it cites were found in a registry or an index.

Role of the Pulmonary Circulation in the Distribution of Human Fetal Cardiac Output During the Second Half of Pregnancy

Rasanen, Juha, Wood, Dennis C., Weiner, Stuart, Ludomirski, Abraham, Huhta, James C.·1996·Circulation

Abstract

Background By using Doppler echocardiography, we determined the normal distribution of human fetal combined cardiac output (CCO) from the left and right ventricles. We also established weight-indexed pulmonary and systemic vascular resistances (R Pi and R Si , respectively) and changes during the second half of pregnancy. Methods and Results Blood flows at the aortic and pulmonary valve annuli (LVCO and RVCO, respectively), right and left pulmonary arteries (Q P ), and ductus arteriosus (Q DA ) were calculated in 63 normal fetuses. Foramen ovale blood flow (Q FO =LVCO−Q P ) was estimated. From 20 to 30 weeks of gestation, the proportion of Q P of the CCO increased (from 13% to 25%, P <.001), while the proportion of Q FO decreased (from 34% to 18%, P <.001). After 30 weeks, the proportions of Q P and Q FO were unchanged. At 38 weeks, the proportion of RVCO (60%) was higher ( P <.05) than that of LVCO (40%). The proportion of Q DA did not change significantly. The correlation between RVCO calculated from blood flow through the pulmonary valve and from Q DA and Q P was good ( r =.97, P <.0001). R Pi ( P <.001) decreased from 20 to 30 weeks of gestation. From 30 to 38 weeks, R Pi increased ( P <.0001). R Si increased ( P <.001) from 20 to 38 weeks. The ratio of R Pi to R Si decreased ( P <.01) from 20 to 30 weeks and later remained unchanged. Conclusions The human fetal pulmonary circulation has an important role in the distribution of cardiac output.

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Metadata

Authors
Rasanen, J., Wood, D. C., Weiner, S., Ludomirski, A., & Huhta, J. C.
Venue
Circulation
Published
1996-09
Volume
94
Issue
5
Pages
1068-1073
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W2017055786
Cited by
347
References
13
FWCI
6.33
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Role of the Pulmonary Circulation in the Distribution of Human Fetal Cardiac Output During the Second Half of Pregnancy. https://app.cochat.ai/papers/10.1161/01.cir.94.5.1068
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Rasanen, J., Wood, D. C., Weiner, S., Ludomirski, A., & Huhta, J. C. (1996). Role of the Pulmonary Circulation in the Distribution of Human Fetal Cardiac Output During the Second Half of Pregnancy. Circulation. https://doi.org/10.1161/01.cir.94.5.1068

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