Effect of percutaneous balloon mitral valvotomy on pulmonary venous flow in severe mitral stenosis.
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Date
1999Author
Yonga, GO
Jowi, CA
Bonhoeffer, P.
Type
ArticleLanguage
enMetadata
Show full item recordAbstract
OBJECTIVE:
To study the effect of percutaneous balloon mitral valvotomy (PBMV) on the deranged systolic and diastolic pulmonary venous flows in mitral stenosis.
DESIGN:
Open, non-randomised, case-control study.
SETTING:
Mater Misericordiae Cardiac Catheterisation Laboratory and Kenyatta National Hospital Cardiac Catheterisation Laboratory.
PATIENTS:
Twelve consecutive patients with severe symptomatic mitral stenosis with valve characteristics suitable for PBMV on echocardiographic evaluation.
INTERVENTION:
Percutaneous baloon mitral valvotomy.
MAIN OUTCOME MEASURES:
Peak systolic and diastolic pulmonary flow velocities and velocity time integrals (VTI).
RESULTS:
Peak sytolic pulmonary flow velocity increased from 29.8 +/- 9.6 to 46.1 +/- 8.5 cm/s p < 0.01) and systolic VTI from 2.6 +/- 1.0 to 5.5 +/- 0.9 cm (p < 0.01). Peak diastolic flow velocity increased from 39.3 +/- 5.7 to 43.0 +/- 6.9 cm/s (p < 0.05) and diastolic VTI from 3.9 +/- 1.5 to 4.8 +/- 1.6 cm (p < 0.05). Mean mitral valve area increased from 0.65 +/- 0.15 to 1.98 +/- 0.34 cm2 (p < 0.001) and mean left atrial pressures from 30.5 +/- 9.1 to 11.9 +/- 5.1 mmHg (p < 0.001).
CONCLUSIONS:
In patients with severe mitral stenosis and sinus rythm, left atrial filling is biphasic with diastolic preponderance. Successful PBMV causes predominant increase in atrial systolic filling.
URI
http://www.ncbi.nlm.nih.gov/pubmed/10442144http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/31776
Citation
East Afr Med J. 1999 Jan;76(1):28-30Publisher
University of Nairobi, College of Health Sciences
Collections
- Faculty of Health Sciences (FHS) [10387]