Elevated left atrial pressure does not cause left-to-right shunting after mitral balloon valvuloplasty
✍ Scribed by Watson, K. R. ;Chisholm, R. J. ;Azpiri, J. R. ;Armstrong, P. W.
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 238 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0098-6569
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✦ Synopsis
To assess the hemodynamic factors affecting left-teright shuntlng following balloon mitral valvuloplasty we studied 10 patients at 3 points during the procedure: pre-septa1 dilation, post-septa1 dilation pre-valvuloplasty, and post-valvuloplasty. Hemodynamic parameters were recorded and an oximetty run was obtained at each stage.
Mltral valvuloplasty was successful in 8 and unsuccessful in 2 patients. No patient had a significant oxygen step-up at any stage, including the 2 patients with unsuccessful valvuloplasty. Significant left-to-right shuntlng through the atrial septal puncture in mitral valvuloplasty is Infrequent, even before successful balloon valvuloplasty when left atrial pressure is maximally elevated.