Equipment

Data acquisition/conversion hardware

• SCXI DAQ System (2) — National Instruments
  • Cabled to the PC, which houses an adaptor for analog to digital conversion; has 32 analog, 12 thermal, and several digital inputs
• DAQPad-6070E (2) — National Instruments
  • Cabled to the PC via FireWire; has eight analog and eight digital inputs
• DI-720-USB (2) — DATAQ Instruments, Inc.
  • Cabled to the PC via USB; has 16 analog inputs
• Analog Input Device (AID) (2) — WR Medical Systems
  • Converts pressure (mmHg) from a chest bellows and breathing device to an analog voltage; used for deep breathing and Valsalva maneuver

Data acquisition software

• Labview — National Instruments
• WinDaq Pro + — WinDaq

Instruments

• Cardiac monitors (2) — IVY Biomedical Systems
  • Model 101
• Finometer (2) — Finapres Medical Systems
  • Used to noninvasively acquire beat-to-beat blood pressure measurements
• Quantitative Sudomotor Axon Reflex Test (QSART) System
  • Comprised of four sudorometers (with associated constant current generators), multicompartmental sweat cells, and gas supply
  • Developed by Dr. Phillip Low and the Mayo Clinic Section of Engineering
• Laser Doppler flowmeters
  • Measures skin blood flow
    • TSI Laserflo Blood Perfusion Monitor Model 403A (2) — TSI Inc.
    • LDV-5000 (1) — MedPacific Corp.
    • Periflux Laser Doppler Flowmeter (1) — Medex Inc.
• Transcranial Doppler System — Multigon Industries Inc.
  • Measures cerebral blood flow velocity beat-to-beat
    • Model 500M
• Electroencephalography — Grass Instruments Co.
  • Grass EEG Model 8-16 C
• Mesenteric Artery Ultrasound Unit — Toshiba America Medical Systems Inc.
  • 2-D ultrasound system used for measurements of superior mesenteric artery blood flow
    • SSH-140 Ultrasound System
• Microneurography units — Grass Instruments Co.
  • Used for multi-unit recording of postganglionic muscle and skin sympathetic nerves; can also be used to record activity of some peripheral sensory nerves
    • Grass S44 Stimulator
    • Grass SIU5 Stimulus Isolation Unit
    • Grass CCU 1 A Constant Current Unit
• Plethysmography — D.E. Hokanson, Inc.
  • Permits the recording of arterial blood flow, venous filling and transcapillary flux
    • Model TL-400 Vascular Diagnostic System; Model E 20 Rapid Cuff Inflator; Model AG 101 Cuff Inflator Air Source
    • EC6 plethysmograph units (3)
• CO2 monitor — Puritan Bennett
  • Measures end-tidal CO2
    • 254 Airway Gas Monitor
• Respiratory unit — Medical Graphics Corporation
  • Used for ventilation studies
    • MedGraphic Cardiorespiratory Diagnostic System
• TestWorks Complete Autonomic Reflex Test Lab — WR Medical Electronics
  • FDA-approved version of the Mayo quantitative autonomic reflex lab

• ART381604