Author + information
- Katherine Anne Durhama,b,
- Marianne Pianoa,b,
- Decebal S. Grizaa,b,
- Kashif Ahmeda,b,
- Amtul Shafia,b and
- Mladen Vidovicha,b
Background: The radial artery has become a highly utilized access site for cardiac catheterization (ie., radial arterial access [TRA]). RTA has been shown to improve patient satisfaction and reduce bleeding complications. Despite benefits, there is limited data about RTA on distal blood flow. Using thermography as a measure of blood flow, the aim of this study was to determine changes in hand blood flow post RTA.
Methods: Using repeated measures design, artery diameters and hand temperatures were measured before (pre) and 30 days post RTA in a convenience sample of Veteran subjects (N=76). Since thermography is an indirect technique for measuring blood flow, radial artery diameter was confirmed by ultrasound (US) pre and post TRA. US and thermography measures were obtained in the catheterized and non catheterized (contralateral) hand. Also determined were radial (ie, thumb and 2nd digit) and ulnar (ie., 4th, 5th digit) perfusion temperature differences as this reflects regional changes from total hand over areas predominantly perfused by the radial and ulnar, respectively.
Results: All subjects were male with a mean age of 65 years. Using US, no differences were found in radial arterial diameter post TRA catheterization. Compared to pre TRA, average total hand thermography values post RTA were increased (ie. warmer and increased blood flow) in both the RTA and contralateral hand (pre 30±30C, post 31±20C p<0.05; pre 30±30C, post 31±20C p<0.05, respectively). Compared to pre-TRA values, no changes were found in radial or ulnar perfusion territory values within the TRA hand post TRA, whereas both of these parameters were decreased in the contralateral hand.
Conclusions: TRA cardiac catheterization is not associated with adverse changes in radial artery blood flow. Unexpectedly, we found significant temperature difference in the radial and ulnar territories in the contralateral hand. The clinical significance of this finding and cause is unknown but could be attributable to venous flow alterations. Importantly, our findings add to the growing body of evidence that TRA is a safe site for cardiac catheterization.
Poster Hall, Hall C
Saturday, March 18, 2017, 9:45 a.m.-10:30 a.m.
Session Title: Vascular Access and Hemostasis Issues
Abstract Category: 26. Interventional Cardiology: Vascular Access and Complications
Presentation Number: 1192-121
- 2017 American College of Cardiology Foundation