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Abnormal pattern of flow in the superior caval vein in children after open heart surgery

Published online by Cambridge University Press:  19 August 2008

Ko Ichihashi ,
Hirohiko Shiraishi  and
Mariko Momoi
Ko Ichihashi*
Affiliation:
Department of Pediatrics, Jichi Medical School, Kawachigun,Tochigi, Japan
Hirohiko Shiraishi
Affiliation:
Department of Pediatrics, Jichi Medical School, Kawachigun,Tochigi, Japan
Mariko Momoi
Affiliation:
Department of Pediatrics, Jichi Medical School, Kawachigun,Tochigi, Japan
*
Ko Ichihashi PhD, Department of Pediatrics, Jichi Medical School, 3311–1 Minamikawachi, Kawachigun, Tochigi, 329–0498Japan. Tel: +81–285–58–7366; Fax: +81–285–44–6123; E-mail: koichiha@jichi.ac.jp
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Abstract

Abstract To investigate the pattern of flow in the superior caval vein in children after open heart surgery, we examined the flow velocity in 37 partients who had undergone surgical correction of either ventricular or atrial septal defects. The control group consisted of 64 age-matched children. We used pulsed Doppler examinations to record the velocity curves. We measured the hightest and lowest peak flow velocities during systole and diastole, and calculated ratios for the various measurements.

We found that the velocity of the wave in systole is lower than that of the wave in diastole in the postoperative patients, which is contrary to the normal pattern. The velocity in systole increases more than that in diastole during inspiration, which is also diffetent from the normal pattern. The change in pattern of flow velocity cure during respiration was smaller in patients after surgery than in normal subjects, which might indicate that there is less reserve ability in the right atrium in postoperative patients.

Keywords

Flow patternsuperior caval veinchildrenopen heart surgey.
Type
Original Articles
Information
Cardiology in the Young , Volume 10 , Issue 4 , July 2000 , pp. 388 - 395
Copyright
Copyright © Cambridge University Press 2000

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