Mechanism and Predictors of Failed Transradial Approach for Percutaneous Coronary Interventions
Payam Dehghani, MD*,
Atif Mohammad, MD*,
Ravi Bajaj, BSc*,
Tony Hong, BSc*,
Colin M. Suen, BSc*,
Waseem Sharieff, MD ,
Robert J. Chisholm, MD*,
Michael J.B. Kutryk, MD, PhD,
Neil P. Fam, MD, MSc*,
Asim N. Cheema, MD, PhD*,*
* Terrence Donnelly Heart Center, St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
Department of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada
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Figure 1 Causes of Transradial Approach Percutaneous Coronary Intervention Failure
(A) Radial artery loop (arrowhead). (B) Guidewire-induced dissection (*). (C) Severe spasm not relieved by intra-arterial nitroglycerin and verapamil (arrow). (D) Severe subclavian tortuosity.
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Figure 2 Multivariate Predictors of TR-PCI Failure
Age and prior coronary artery bypass graft surgery (CABG) were positive predictors and height was a negative predictor of transradial approach percutaneous coronary intervention (TR-PCI) failure. CI = confidence interval; OR = odds ratio.
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Figure 3 TR-PCI Failure Stratified by Patient Height
Data shown as quartiles. The transradial approach percutaneous coronary intervention (TR-PCI) failure rate was highest in patients with height <165 cm and lowest in patients with height >175 cm.
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