| Pulsed doppler echocardiographic analysis of pulmonary venous flow in congenital heart diseases with left-to-right shunt. |
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Kye Hwan Seol, Chang Sung Son, Joo Won Lee, Soon Kyum Kim, Young Chang Tockgo |
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Department of Pediatrics, College of Medicine, Korea University, Seoul, Korea |
| 선천성 좌우단락 심질환에서의 Pulsed Doppler 심에코도에
의한 폐정맥 혈류분석 |
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설계환, 손창성, 이주원, 김순겸, 독고영창 |
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고려대학교 의과대학 소아과학교실 |
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Received: 28 December 1990 • Accepted: 13 March 1991 |
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| Abstract |
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Pulsed Doppler echocardiography was performed to evaluate the flow velocity pattern of the
pulmonary vein in 28 patients with congenital heart diseases which comprised of 8 atrial septal defect
(ASD), 14 ventricular septal defect (VSD) and 6 patent ductus arteriosus (PDA). 20 normal children
served as controls. The objective of this study was to ascertain that pulmonary venous flow velocity
is dependent on the amount of pulmonary blood flow, through the analysis of pulmonary venous flow
pattern.
The results obtained were as follows.
1) The peak velocities of S wave in ASD, VSD and PDA during systole were 55.4±10.8 cm/sec,
48±11.9 cm/sec and 49.8±11.0 cm/sec respectively. The mean value (50.7±11.4 cm/sec) of these 3
lesions was significantly higher than that (45.9±7.0 cm/sec) of normal controls.
2) The peak velocities of 0 trough in ASD, VSD and PDA were 38.9±7.5 cm/sec, 33.2±9.3 cm/sec
and 33.6±0.1 cm/sec respectively. The mean value (35.6±9.1 cm/sec) of these 3 lesions was signifi-
cantly higher than that (26.5±7.5 cm/sec) of normal controls.
3) There was no significant difference of the D wave velocity between the left -to-right shunt group
(50.4±9.9 cm/sec) and normal control group (50.8+7.7cm/sec).
4) In view of overall pattern of pulmonary venous flow velocity, the normal control group tended
to show the type 1 pattern in which the magnitude of S wave was smaller than that of D wave, and
the group with congenital heart diseases tended to show the type 2 pattern in which the height of S
wave was larger than that of D wave.
5) The difference in the velocity and the flow pattern of pulmonary vein observed in patients with
left-to-right shunt lesions was considered to be due to the increase of total pulmonary blood flow
resulting from the contribution of shunt flow through the defect to the normal pulmonary venous
flow. So we could conclude that the pulmonary venous flow velocity is influenced by the amount of
pulmonary blood flow. |
| Key Words:
Pulmonary Venous Flow, Pulsed Doppler Echocardiography |
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