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Finapres NOVA​ PLUS
An Innovative Hemodynamic Monitoring System

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​Technology
Height Correction Unit: enables arm movements

All Finapres ® devices include a Height Correction Unit (HCU) to enable arm movements during measurements, for example during Head-Up Tilt (HUT) tests and Active Stand tests [3].

The HCU compensates for vertical movement of the hand relative to heart level and the concomitant pressure changes in the finger blood pressure.
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Finapres Height Correction Unit
​The HCU consists of a liquid filled tube connected at one end to a pressure transducer. The reference ending is placed at the patients arm at heart level, while the other end is fixed to a finger cuff. The height signal is continuously recorded during measurements for monitoring and review purposes.
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​Using the HCU during measurements is highly recommended.

​In case no HCU is connected, the cuffed finger must remain at heart level during the whole measurement!
​References:
  1. Penaz, J. “Photoelectric measurement of blood pressure, volume and flow in the finger” In: Digest of the 10th International Conference on Medical and Biological Engineering. ” Dresden 104 (1973).
  2. Wesseling, KH “Physiocal, calibrating finger vascular physiology for Finapres.” Homeostasis 36 (1995): 67-82.
  3. Imholz, Ben PM, et al. “Fifteen years experience with finger arterial pressure monitoring: assessment of the technology.” Cardiovascular Research 38.3 (1998): 605-616.
  4. Langewouters, GJ, et al. “Why use Finapres or Portapres rather than intra-arterial or intermittent non-invasive techniques of blood pressure measurement?” Journal of medical engineering & technology 22.1 (1998): 37-43.
  5. Rongen, Gerard A., et al. “Comparison of intrabrachial and finger blood pressure in healthy elderly volunteers.” American journal of hypertension 8.3 (1995): 237-248.
  6. Gizdulich, Paolo et al. “Models of brachial to finger pulse wave distortion and pressure decrement.” Cardiovascular Research 33.3 (1997): 698-705.
  7. Westerhof, Berend E., et al. “Variable day / night bias in 24-h non-invasive finger pressure against intrabrachial artery pressure is removed by waveform filtering and level correction.” Journal of hypertension 20.10 (2002): 1981-1986.
  8. Guelen, Ilja, et al. “Validation of brachial artery pressure reconstruction from finger arterial pressure.” Journal of hypertension 26.7 (2008): 1321-1327.
Autonomic Failure Diagnosis
Finapres devices used to understand autonomic failure
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Hemodynamic Evaluation
Finapres devices are used for hemodynamic evaluation
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Education
Finapres devices are used to educate students in cardiovascular physiology
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Other Application Fields
Orthostatic Hypotension, Space Flight, Sleep Disorder, and Pharmacological Research
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