Role for Doppler ultrasound in the assessment of renal circulation

Effects of dopamine and dobutamine on renal hemodynamics in humans

T. Yura, S. Yuasa, M. Fukunaga, K. F. Badr, H. Matsuo

Research output: Contribution to journalArticle

Abstract

To examine the utility of Doppler ultrasound in assessing renal hemodynamics, we investigated the effects of dopamine and dobutamine on renal blood flow using Doppler ultrasound technique and conventional clearance tests in 7 healthy volunteers. After visualization of arterial blood flow in the right renal hilus by two-dimensional color flow mapping, the phasic blood flow velocity in the vessel was obtained by a pulsed Doppler method. Intravenous infusion of dopamine at a low dose increased the velocity and decreased the waveform pulsatility of renal artery blood flow without causing any significant changes in blood pressure, heart rate, or cardiac index. In contrast, dobutamine infusion increased the peak systolic velocity in a dose-dependent manner, but did not increase the mean velocity or decrease the waveform pulsatility. Percent changes of renal blood flow during infusions of both agents correlated well with those of the mean velocity. Furthermore, the degrees of changes of the waveform pulsatility were consistent with those of renal vascular resistance obtained from clearance tests and blood pressure. Our results suggest that mean velocity reflects renal blood flow and the pulsatility of blood flow waveform represents renal vascular resistance. We conclude that the effects of vasoactive agents on renal blood flow and renal vascular resistance can be estimated noninvasively, directly, and repeatedly using Doppler ultrasound.

Original languageEnglish (US)
Pages (from-to)168-175
Number of pages8
JournalNephron
Volume71
Issue number2
StatePublished - 1995
Externally publishedYes

Fingerprint

Doppler Ultrasonography
Dobutamine
Renal Circulation
Dopamine
Hemodynamics
Kidney
Vascular Resistance
Blood Pressure
Blood Flow Velocity
Renal Artery
Intravenous Infusions
Healthy Volunteers
Color
Heart Rate

Keywords

  • Dobutamine
  • Dopamine
  • Doppler ultrasound
  • Renal hemodynamics

ASJC Scopus subject areas

  • Nephrology

Cite this

Role for Doppler ultrasound in the assessment of renal circulation : Effects of dopamine and dobutamine on renal hemodynamics in humans. / Yura, T.; Yuasa, S.; Fukunaga, M.; Badr, K. F.; Matsuo, H.

In: Nephron, Vol. 71, No. 2, 1995, p. 168-175.

Research output: Contribution to journalArticle

Yura, T. ; Yuasa, S. ; Fukunaga, M. ; Badr, K. F. ; Matsuo, H. / Role for Doppler ultrasound in the assessment of renal circulation : Effects of dopamine and dobutamine on renal hemodynamics in humans. In: Nephron. 1995 ; Vol. 71, No. 2. pp. 168-175.
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