Ventricular volume characteristics in double-inlet left ventricle before and after septation
| Autor: | H Aotsuka, S Fukuchi, Hiromi Kurosawa, Y Imai, Makoto Nakazawa, A Takao, Satomi G |
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| Rok vydání: | 1990 |
| Předmět: |
Adult
medicine.medical_specialty Adolescent Heart Ventricles Hemodynamics Blood Pressure Free wall Diastole Physiology (medical) Internal medicine medicine Heart Septum Humans Child Lung Ejection fraction Cardiac cycle business.industry Infant Stroke Volume Fractional shortening medicine.disease medicine.anatomical_structure Double inlet left ventricle Ventricle Echocardiography Child Preschool Cardiology Ventricular volume Vascular Resistance Cardiology and Cardiovascular Medicine business Follow-Up Studies |
| Zdroj: | Circulation. 81(5) |
| ISSN: | 0009-7322 |
| Popis: | Septation is one of the surgical choices for double-inlet left ventricle, yet postoperative hemodynamics have not been well defined. We studied ventricular volume characteristics in 10 patients with double-inlet left ventricle before and after septation. Preoperative end-diastolic volume (EDV) of the ventricle was 291 +/- 111% (+/- SD) of normal and ejection fraction (EF) was 0.59 +/- 0.07. Postoperatively, EDV of the right-sided ventricle (RV) was 82 +/- 24%, and EDV of the left-sided ventricle (LV) was 153 +/- 41%. Ejection fraction of the RV was 0.77 +/- 0.10, and LVEF was 0.49 +/- 0.13. On the short-axis view of two-dimensional echocardiography, fractional change of the cross-sectional area was 0.65 +/- 0.16 for the RV and 0.23 +/- 0.11 for the LV. Fractional shortening of the septum-to-ventricular free wall axis was 0.51 +/- 0.17 in the RV and -0.05 +/- 0.09 in the LV. Analysis of the curvature of the new septum during cardiac cycle on two-dimensional echocardiography revealed that the septum shifted to the right side during systole in all patients in whom the systolic LV/RV pressure ratio was larger than 1.0. The septum shifted toward the LV during diastole in eight patients in whom end-diastolic pressure in the RV was higher than or equal to that in the LV, whereas it remained in the right side in two patients with higher left-side pressure. The cardiac index of these two patients was 2.4 and 2.6 l/min/m2, respectively, whereas it averaged 4.4 +/- 1.0 l/min/m2 in the other eight patients.(ABSTRACT TRUNCATED AT 250 WORDS) |
| Databáze: | OpenAIRE |
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