title: Radial artery cannulation decreases the distal arterial blood flow measured by power Doppler ultrasound.
abstract: Radial arterial cannulation is a popular technique for continuous hemodynamic monitoring in an area of anesthesia and intensive care. Although the risk for invasive monitoring is considerable, there is scarce information about the change in blood flow of cannulated vessel after the catheterization. In the current investigation, we evaluated the change in the cannulated arterial blood flow. Six volunteers (study 1) and eight post-surgical patients (study 2) were enrolled into the studies. In the study 1, the both side of diameter of radial artery (RA), ulnar artery (UA) and dorsal branch of radial artery (DBRA) of participants were measured using power Doppler ultrasound (PDU) with or without proximal oppression. In the study 2, the diameter of RA, UA and DBRA of the both intact and cannulated side were compared. Study 1: The diameter of RA was 3.4 (0.52) [mean (SD)] mm and the proximal oppression significantly decreased the diameter to 1.8 (0.59) mm. The diameter of DBRA measured by PDU also decreased 2.0 (0.60)-1.3 (0.59) mm. Study 2: There was no difference between the diameters of right and left RA, however, the UA was larger [3.4 (0.60) vs. 2.8 (0.83) mm] and the DBRA was narrower [1.4 (0.43) vs. 2.0 (0.47) mm] in the cannulated side. The diameters of DBRA were different between the intact and cannulated side in the patients. Although there is no information of relationships between cause of severe complication and decreased flow, significant reduction of blood flow should be concerned.
authors.affiliation: Department of Emergency Medicine, Nagoya University Hospital, 65 Tsurumai-cho, Showa-ku, Nagoya, 4668550, Japan.|Department of Pediatrics, Developmental Pediatrics, Nagoya Graduate School of Medicine, Nagoya, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Numaguchi
authors.affiliation: Department of Emergency Medicine, Nagoya University Hospital, 65 Tsurumai-cho, Showa-ku, Nagoya, 4668550, Japan. adachi.yushi@i.nagoya-u.jp.
authors.forename: Yushi U
authors.initials: YU
authors.lastname: Adachi
authors.affiliation: Department of Anesthesia, Shizuoka General Hospital, Shizuoka, Japan.
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Aoki
authors.affiliation: Department of Anesthesia, Fujinomiya Municipal Hospital, Fujinomiya, Japan.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Ishii
authors.affiliation: Department of Anesthesia, Enshu Hospital, Hamamatsu, Japan.
authors.forename: Katsumi
authors.initials: K
authors.lastname: Suzuki
authors.affiliation: Department of Anesthesia and Resuscitation, Hamamatsu University School of Medicine, Hamamatsu, Japan.
authors.forename: Yukako
authors.initials: Y
authors.lastname: Obata
authors.affiliation: Department of Anesthesia and Resuscitation, Hamamatsu University School of Medicine, Hamamatsu, Japan.
authors.forename: Shigehito
authors.initials: S
authors.lastname: Sato
authors.affiliation: Department of Anesthesia and Resuscitation, Nagoya University Graduate School of Medicine, Nagoya, Japan.
authors.forename: Kimitoshi
authors.initials: K
authors.lastname: Nishiwaki
authors.affiliation: Department of Emergency and Critical Care, Nagoya University Graduate School of Medicine, Nagoya, Japan.
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Matsuda
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016477:Artifacts; D001783:Blood Flow Velocity / Q000502:physiology*; D002404:Catheterization; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008297:Male; D008875:Middle Aged; D017534:Radial Artery / Q000000981:diagnostic imaging* / Q000502:physiology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D018608:Ultrasonography, Doppler / Q000379:methods*
keywords: Blood flow; Cannulation; Radial artery; Ultrasound sonography