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Clinical Trial
Journal Article
Research Support, Non-U.S. Gov't
Right subscapular artery catheterization for balloon valvuloplasty of critical aortic stenosis in infants.
American Journal of Cardiology 1995 November 16
This study was performed to evaluate the utility and safety of catheterizing the right subscapular artery for balloon valvuloplasty of critical aortic stenosis in infants. Twenty-one patients, age 20 days to 17 months, underwent attempted valvuloplasty through the surgically exposed right subscapular artery. Five or 7Fr catheters with balloon diameters of 7 to 10 mm were used. Valvuloplasty was successfully performed using this approach in 11 patients. In 2 other patients, the subscapular artery would not accommodate the balloon angioplasty catheter (7Fr), and the arteriotomy was extended into the axillary artery. In these 13 patients, the peak systolic pressure gradient across the aortic valve was decreased from 85 +/- 23 to 33 +/- 7 mm Hg. Moderate aortic regurgitation developed in 3 patients. In the remaining 8 patients, valvuloplasty could not be performed through the right subscapular artery. In 2 patients, the right subclavian artery was anomalous and led to the descending aorta. In 6 small patients, no catheter could be advanced across the aortic valve. In 1 of these patients, a guidewire perforated a coronary sinus of Valsalva causing death. Overall, valvuloplasty using the right subscapular arterial approach was successful in 13 of 19 infants (68%) with normal right subclavian arteries, including all 10 such patients weighing > or = 5.5 kg. No clinically significant peripheral vascular complications or brachial plexus injuries occurred. Thus, the right subscapular arterial approach is an alternative route to be considered when planning balloon aortic valvuloplasty in infants.
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