This first-of-its-kind noninvasive solution unlocks Acumen Hypotension Prediction Index (HPI) software. It also provides continuous blood pressure measurements and advanced hemodynamic parameters, giving you insight to your patients' hemodynamic status.

Unlocks Acumen HPI software

Acumen IQ cuff unlocks the first-of-its-kind technology designed to help predict future hypotensive events*.

Acumen IQ cuff icon

Offers noninvasive
monitoring

Accurately measures continuous blood pressure and hemodynamic parameters for patients who don't need, or can't have, an arterial line.1

Enables individualised
patient care

An advanced hemodynamic monitoring solution that helps guide individualised treatment decisions.

Features of Acumen IQ cuff

Acumen IQ cuff is available on the HemoSphere advanced monitoring platform. This noninvasive finger cuff unlocks Acumen HPI software and enables you to proactively optimise perfusion using continuous blood pressure and advanced hemodynamic parameters. The finger cuff provides automatically calculated, beat-to-beat hemodynamic information and offers you access to advanced hemodynamic parameters for patients who don’t need, or can’t have, an arterial line.

Advanced hemodynamic parameters

  • Hypotension Prediction Index (HPI)
  • Maximum slope of the arterial pressure upstroke (dP/dt)
  • Dynamic arterial elastance (Eadyn)
  • Stroke volume (SV)
  • Stroke volume variation (SVV)
  • Mean arterial pressure (MAP)
  • Cardiac index (CI)
  • Systemic vascular resistance (SVR)
Model numbersDescriptionUnit of Measure
AIQCS Acumen IQ cuff - small EA
AIQCM Acumen IQ cuff - medium EA
AIQCL Acumen IQ cuff - large EA
Acumen IQ cuff

The easy application and snug fit of the Acumen IQ finger cuff self-coiling design eliminates placement errors on a patient to improve consistency.

Clinical application

Manage perfusion, noninvasively

Maintaining necessary peripheral perfusion requires adequate peripheral blood pressure and adequate cardiac output. Acumen IQ cuff offers advanced hemodynamic parameters and continuous blood pressure to help you monitor perfusion, and access to the Acumen HPI software provides you insight to determine the root cause of instability.

Find out more about the risk of hypotension »

Acumen IQ cuff and Acumen HPI software

Managing volume

Dynamic and flow-based parameters are more informative than conventional parameters in determining fluid responsiveness and may help guide individualised volume administration in patients and avoid excessive or insufficient administration.2

Continuous access to pressure and flow parameters allows you to evaluate hemodynamic instability and guide appropriate treatment. When managing perfusion, stroke volume can be optimised using the patient’s own Frank-Starling curve.

Frank-Starling relationship between preload and stroke volume (SV)

Avoidance of hypotension and strategies to optimise fluid management in surgical patients are two modifiable factors that may contribute to improved patient outcomes.

Technical Overview

Easy-to-use finger cuff

The Acumen IQ finger cuff design reduces variability in application. The easy-to-use self-coiling mechanism within the interior of the cuff wraps around the patient’s finger and offers consistent snugness and usability.

Volume clamp method

The essence of the volume clamp method involves clamping the artery to a constant volume by dynamically providing equal pressure on either side of the arterial wall. The volume is measured by a photo-plethysmograph built into the cuff.

The counter pressure is applied by an inflatable bladder inside the cuff and is adjusted 1,000 times per second to keep the arterial volume constant.

Continuous recording of the cuff pressure results in real-time finger pressure waveform.1

The Physiocal method—Physiological Calibration

Physiocal is the real-time method for determining the proper arterial ‘unloaded’ volume, i.e., the volume without a pressure gradient across the arterial wall. Physiocal analyses the curvature and sharpness of the plethysmogram during short episodes of constant pressure levels. It then automatically and periodically recalibrates the system allowing accurate tracking of physiologic changes, e.g., in vasomotor tone.

Calibration interval starts at 10 beats, but it increases to every 70 beats as stability increases. Physiocal interval >30 beats is considered reliable.3

Brachial pressure reconstruction

Clinical standard for noninvasive BP is brachial level. Acumen IQ cuff reconstructs the brachial arterial pressure waveform from the finger arterial pressure waveform. The reconstruction algorithm is based on a vast clinical database.4

Cardiac output calculation

Stroke volume is calculated by an algorithm based on an improved pulse contour method. Cardiac output results from stroke volume times heart rate, and is updated every beat.5

Product implementation

Play video See how Acumen IQ cuff can be effortlessly applied to your patient’s finger.
Acumen IQ cuff setup video
Acumen IQ cuff setup guide
Acumen IQ cuff setup guide

Edwards clinical education

Hemodynamic education empowering clinical advancement

With a long-term commitment to improving the quality of care for surgical and critical care patients through education, Edwards clinical education meets you no matter where you are in the learning process — with a continuum of resources and tools that continuously support you as you solve the clinical challenges facing you today, and in the future.

Most popular

Play video Acumen HPI case study
Acumen HPI case study
Pocket card: Normal hemodynamic parameters
Pocket card: Normal hemodynamic parameters

Find out more about Acumen intelligence support suite »

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  • *A hypotensive event is defined as MAP <65 mmHg for a duration of at least one minute.
References
  1. Peñáz J. Photoelectric measurement of blood pressure, volume and flow in the finger. Digest of the 10th Conference on Medical and Biological Engineering. Dresden, Germany; 1973:104.
  2. Cannesson, M. (2010) Arterial pressure variation and goal-directed fluid therapy. Journal of Cardiothoracic and Vascular Anesthesia, 24(3), 487-97.
  3. Wesseling KH, et al. Physiocal, calibrating finger vascular physiology for Finapres. Homeost Health Dis. 1995;36(2-3):67-82.
  4. Gizdulich P, et al. Models of brachial to finger pulse wave distortion and pressure decrement. Cardiovasc Res. 1997;33(3):698-705. doi: 10.1016/S0008-6363(97)00003-5.
  5. Truijen J, van Lieshout JJ, Wesselink WA, Westerhof BE. Noninvasive continuous hemodynamic monitoring. J Clin Monit Comput. 2012;26(4):267-78. doi: 10.1007/s10877-012-9375-8

For professional use

For professional use

For a listing of indications, contraindications, precautions, warnings, and potential adverse events, please refer to the Instructions for Use (consult eifu.edwards.com where applicable).

Edwards Lifesciences devices placed on the European market meeting the essential requirements referred to in Article 3 of the Medical Device Directive 93/42/EEC bear the CE marking of conformity.

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