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KMID : 0338420220370010109
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The Korean Journal of Internal Medicine
2022 Volume.37 No. 1 p.109 ~ p.118
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Reference diameter and characteristics of the distal radial artery based on ultrasonographic assessment
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Lee Jun-Won
Son Jung-Woo
Go Tae-Hwa
Kang Dae-Ryong
Lee Sang-Jun
Kim Se-Eun
Cho Dong-Hyuk
Park Young-Jun
Youn Young-Jin
Ahn Min-Soo
Ahn Sung-Gyun
Kim Jang-Young
Yoo Byung-Su
Yoon Jung-Han
Lee Seung-Hwan
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Abstract
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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.
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KEYWORD
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Radial artery , Ultrasonography , Body mass index , Body surface area
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