Journal of Clinical Monitoring and Computing

, Volume 29, Issue 5, pp 653–657 | Cite as

Radial artery cannulation decreases the distal arterial blood flow measured by power Doppler ultrasound

  • Atsushi Numaguchi
  • Yushi U. Adachi
  • Yoshitaka Aoki
  • Yasuhiro Ishii
  • Katsumi Suzuki
  • Yukako Obata
  • Shigehito Sato
  • Kimitoshi Nishiwaki
  • Naoyuki Matsuda
Original Research


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.


Radial artery Cannulation Ultrasound sonography Blood flow 


Conflict of interest

All authors have no conflict of interest for the current investigation.


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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Atsushi Numaguchi
    • 1
    • 2
  • Yushi U. Adachi
    • 1
  • Yoshitaka Aoki
    • 3
  • Yasuhiro Ishii
    • 4
  • Katsumi Suzuki
    • 5
  • Yukako Obata
    • 6
  • Shigehito Sato
    • 6
  • Kimitoshi Nishiwaki
    • 7
  • Naoyuki Matsuda
    • 8
  1. 1.Department of Emergency MedicineNagoya University HospitalNagoyaJapan
  2. 2.Department of Pediatrics, Developmental PediatricsNagoya Graduate School of MedicineNagoyaJapan
  3. 3.Department of AnesthesiaShizuoka General HospitalShizuokaJapan
  4. 4.Department of AnesthesiaFujinomiya Municipal HospitalFujinomiyaJapan
  5. 5.Department of AnesthesiaEnshu HospitalHamamatsuJapan
  6. 6.Department of Anesthesia and ResuscitationHamamatsu University School of MedicineHamamatsuJapan
  7. 7.Department of Anesthesia and ResuscitationNagoya University Graduate School of MedicineNagoyaJapan
  8. 8.Department of Emergency and Critical CareNagoya University Graduate School of MedicineNagoyaJapan

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