Reference diameter and characteristics of the distal radial artery based on ultrasonographic assessment

Jun Won Lee, Jung Woo Son, Tae Hwa Go, Dae Ryong Kang, Sang Jun Lee, Se Eun Kim, Dong Hyuk Cho, Young Jun Park, Young Jin Youn, Min Soo Ahn, Sung Gyun Ahn, Jang Young Kim, Byung Su Yoo, Junghan Yoon, Seung Hwan Lee

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Background/Aims: While distal radial artery (DRA) access is increasingly being used for diagnostic coronary angiography, limited information is available regarding DRA size. We aimed to determine the DRA reference diameters of Korean patients and identify the predictors of DRA diameter < 2.3 mm. Methods: The outer bilateral DRA diameters were assessed using a linear ultrasound probe in 1,162 consecutive patients who underwent transthoracic echocardiography. The DRA diameter was measured by the perpendicular angle in the dorsum of the hand, and the average values were compared by sex. DRA diameter < 2.3 mm was defined as unsuitable for routine diagnostic coronary angiography using a 5 Fr introducer sheath. Results: The mean DRA diameters were 2.31 ± 0.43 mm (right) and 2.35 ± 0.45 mm (left). The DRA was smaller in women than men (right: 2.15 ± 0.38 mm vs. 2.43 ± 0.44 mm, p < 0.001; left: 2.18 ± 0.39 mm vs. 2.47 ± 0.45 mm, p < 0.001). The DRA diameter was approximately 20% smaller than the radial artery diameter. A total of 630 (54.2%) and 574 (49.4%) patients had DRA diameter < 2.3 mm in the right and left hands, respectively. Female sex, low body mass index (BMI), and low body surface area (BSA) were significant predictors of DRA diameter < 2.3 mm. Conclusions: We provided reference DRA diameters for Korean patients. Approximately 50% of the studied patients had DRA diameter < 2.3 mm. Female sex, low BMI, and low BSA remained significant predictors of DRA diameter < 2.3 mm.

Original languageEnglish
Pages (from-to)109-118
Number of pages10
JournalKorean Journal of Internal Medicine
Volume37
Issue number1
DOIs
Publication statusPublished - 2022 Jan

Bibliographical note

Publisher Copyright:
© 2022 The Korean Association of Internal Medicine.

All Science Journal Classification (ASJC) codes

  • Internal Medicine

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