First published online March 22, 2004
Journal of Experimental Biology 207, 1487-1490 (2004)
Published by The Company of Biologists 2004
doi: 10.1242/jeb.00902
Ventricular diastolic filling characteristics in stage-24 chick embryos after extra-embryonic venous obstruction
Nicolette T. C. Ursem1,*,
Sandra Stekelenburg-de Vos1,
Juriy W. Wladimiroff1,
Robert E. Poelmann2,
Adriana C. Gittenberger-de Groot2,
Norman Hu3 and
Edward B. Clark3
1 Department of Obstetrics & Gynecology, Erasmus MC, Rotterdam, 3000 DR,
The Netherlands
2 Department of Anatomy and Embryology, Leiden University Medical Center,
Leiden, 2300 RC, The Netherlands
3 Department of Pediatrics, University of Utah, Salt Lake City, UT 84113,
USA

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Fig. 1. An example of simultaneously recorded tracings of atrioventricular flow
velocity (solid line) and dorsal aortic blood flow (broken line) in a normal
(A) and clipped (B) stage-24 chick embryo. Diastole is partitioned into two
components: the passive phase indicated by P and the active phase indicated by
A.
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Fig. 2. Dorsal aortic (DAo) blood flow and passive (P) and active (A) components of
atrioventricular blood flow measured in normal (open bars, N=15) and
clipped (filled bars, N=15) chick embryos at stage 24. Data are means
± S.E.M. *P<0.003
vs control.
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Fig. 3. Dorsal aortic (DAo) stroke volume and passive (P) and active (A)
ventricular filling volumes measured in normal (open bars, N=15) and
clipped (filled bars, N=15) chick embryos at stage 24. Data are means
± S.E.M. *P<0.003
vs control.
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© The Company of Biologists Ltd 2004