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Clinical Autonomic Research

, Volume 17, Issue 2, pp 106-111

Open Access This content is freely available online to anyone, anywhere at any time.

Leg blood flow measurements using venous occlusion plethysmography during head-up tilt

  • Miriam KooijmanAffiliated withDept. of Physiology, Radboud University Nijmegen Medical Centre, Ïnstitute for Fundamental and Clinical Movement SciencesRehabilitation Centre, Sint Maartenskliniek
  • , Fleur PoelkensAffiliated withDept. of Physiology, Radboud University Nijmegen Medical Centre, Ïnstitute for Fundamental and Clinical Movement Sciences
  • , Gerard A. RongenAffiliated withDept. of Pharmacology-Toxicology, Radboud University Nijmegen Medical Centre
  • , Paul SmitsAffiliated withDept. of Pharmacology-Toxicology, Radboud University Nijmegen Medical Centre
  • , Maria T.E. HopmanAffiliated withDept. of Physiology, Radboud University Nijmegen Medical Centre, Ïnstitute for Fundamental and Clinical Movement Sciences Email author 

Abstract

We tested whether venous occlusion plethysmography (VOP) is an appropriate method to measure calf blood flow (CBF) during head-up tilt (HUT). CBF measured with VOP was compared with superficial femoral artery blood flow as measured by Doppler ultrasound during incremental tilt angles. Measurements of both methods correlated well (r = 0.86). Reproducibility of VOP was fair in supine position and 30° HUT (CV: 11%–15%). This indicates that VOP is an applicable tool to measure leg blood flow during HUT, especially up to 30° HUT.

Keywords

strain gauge plethysmography Doppler ultrasound orthostasis calf blood flow autonomic nervous system