The Acumen IQ sensor - part of the minimally-invasive family of hemodynamic sensors - unlocks the Acumen Hypotension Prediction Index (HPI) software. It was built on the foundation of the Edwards Arterial Pressure-Based Cardiac Output (APCO) algorithm.

The Acumen IQ sensor connects to any existing radial arterial line and unlocks the ability to predict hypotensive events with the Acumen Hypotension Prediction Index (HPI) software.

Developed in partnership with clinicians across the world and the first in a new category of products, Acumen Hypotension Prediction Index software offers the only predictive monitoring parameter for hypotension that is commercially available in the United States. This first-of-its-kind predictive decision support software detects the likelihood of a patient trending towards a hypotensive event before the event occurs, and provides you with insights to understand the root cause and inform a potential course of action for your patient.

*A hypotensive event is defined as MAP <65 mmHg for a duration of at least one minute

Harness the power of patient insights, which enable intelligent decision support.

ModelDescriptionLengthUnit of Measure
AIQS8 Acumen IQ sensor standalone 84 in/213 cm EA
AIQS85 Acumen IQ sensor standalone (5-pack) 84 in/213 cm 5
AIQS6 Acumen IQ sensor standalone 60 in/152 cm EA
AIQS65 Acumen IQ sensor standalone (5-pack) 60 in/152 cm 5
Clinical Application

Acumen IQ sensor attaches to any existing arterial line and automatically calculates key parameters every 20 seconds, reflecting rapid physiologic changes in surgical and nonsurgical and patients in intensive care settings.

  • Stroke Volume (SV)
  • Stroke Volume Variation (SVV)
  • Mean Arterial Pressure (MAP)
  • Contractility: Systolic Slope (dP/dt)
  • Cardiac Index (CI)
  • Systemic Vascular Resistance (SVR)
  • Hypotension Prediction Index (HPI)
  • Afterload: Dynamic arterial elastance (Eadyn)

The Acumen IQ sensor unlocks first-of-its-kind predictive decision support to manage intraoperative hypotension

In noncardiac surgery patients, research findings have revealed strong associations between intraoperative hypotension and elevated risk of both acute kidney injury (AKI) and myocardial injury after noncardiac surgery (MINS).1,2,3

  • MINS — the most common cardiovascular complication that occurs after noncardiac surgery — is the leading cause of mortality within one month following surgery.1,4 It is a substantial public health issue.4
  • More than 1 in 12 patients (8 million people globally) over 45 years old experience MINS each year.4,5,6

Manage the flow component of perfusion to guide individualized fluid management

When managing perfusion, stroke volume can be optimized using the patient’s own Frank-Starling curve. The patient’s location on the curve can be determined by measuring changes in SV in response to change in preload using a fluid bolus challenge or passive leg raise (PLR).

Dynamic and flow-based parameters are more informative than conventional parameters in determining fluid responsiveness and may help guide individualized volume administration in patients and avoid excessive and insufficient administration.9

Additionally, stroke volume variation (SVV) has been proven to be a highly sensitive and specific indicator for preload responsiveness when managing volume. As a dynamic parameter, SVV has been shown to be an accurate predictor of fluid responsiveness in loading conditions induced by mechanical ventilation.7,8

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

Related Products

The Acumen Hypotension Prediction Index (HPI) software is comprised of three key elements:

  • The HPI parameter displays a value ranging from 0 to 100, with higher values indicating higher likelihood of a patient trending towards a hypotensive event before the event*
  • The HPI high alert popup alerts you when your patient is trending toward or experiencing a hypotensive event
  • The HPI secondary screen provides advanced hemodynamic pressure and flow parameters allowing you an opportunity to investigate and identify the root cause of potentially developing hypotensive events
*A hypotensive event is defined as MAP <65 mmHg for a duration of at least one minute.

For more on Acumen HPI software

Acumen Analytics software offers you retrospective data analysis and hemodynamic insights into patient perfusion. It allows you to retrospectively view and analyze monitored hemodynamic parameters from the Acumen IQ sensor, highlighting key events including:

Hypotension frequency

Hypotension frequency

Hypotension duration

Hypotension duration

Hypotension severity

Hypotension prevalence

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.

For more educational information

Product Implementation
Contact Us

The Edwards Advantage

We are committed to providing your institution, clinicians and staff with the highest levels of customer service and support to ensure seamless product implementation and ongoing use, including:

  • 24/7 Technical support – Call 800-822-9837 anytime, day or night
  • Product information and orders – Call 800-424-3278 to speak to a customer service representative

Contact a sales representative

  1. Salmasi, V., Maheshwari, K., Yang, G., Mascha, E.J., Singh, A., Sessler, D.I., & Kurz, A. (2017). Relationship between intraoperative hypotension, dened by either reduction from baseline or absolute thresholds, and acute kidney injury and myocardial injury. Anesthesiology, 126(1), 47-65.
  2. Sun, L.Y., Wijeysundera, D.N., Tait, G.A., & Beattie, W.S. (2015). Association of Intraoperative Hypotension with Acute Kidney Injury after Elective non-cardiac Surgery. Anesthesiology, 123(3), 515-523.
  3. Walsh, M., Devereaux, P.J., Garg, A.X., Kurz, A., Turan, A., Rodseth, R.N., Cywinski, J., Thabane, L., & Sessler, D.I. (2013). Relationship between Intraoperative Mean Arterial Pressure and Clinical Outcomes after non-cardiac Surgery. Anesthesiology, 119(3), 507-515.
  4. Khan, J., Alonso-Coello, P., Devereaux, P.J., Myocardial injury after noncardiac surgery, Curr Opin Cardiol, 2014, 29: 307-311.
  5. Sellers, D., Srinivas, C., Djaiani, G. (2018). Cardiovascular complications after non-cardiac surgery. Anaesthesia, 73 (Suppl. 1), 34 - 42.
  6. van Waes, J., Nathoe, H., Graa, J., Kemperman, H., de Borst, G., Peelen, L., van Klei, W. (2013). Myocardial Injury After Noncardiac Surgery and its Association With Short-Term Mortality. Circulation, 127, 2264 - 2271.
  7. Berkenstadt, H., et al. (2001) Stroke Volume Variation as a Predictor of Fluid Responsiveness in Patients Undergoing Brain Surgery. Anesthesia & Analgesia, 92, 984-9.
  8. Peng, K., Li, J., Cheng, H., Ji, FH. (2014) Goal-directed fluid therapy based on stroke volume variations improves fluid management and gastrointestinal perfusion in patients undergoing major orthopedic surgery. Medical Principles and Practice, 23(5), 413-20.
  9. Cannesson, M. (2010) Arterial pressure variation and goal-directed fluid therapy. Journal of Cardiothoracic and Vascular Anesthesia, 24(3), 487-97.

Important safety information

Caution: Federal (United States) law restricts this device to sale by or on the order of a physician.
See Instructions For Use (IFU) / Directions For Use (DFU) for full prescribing information, including indications, contraindications, warnings, precautions and adverse events.

Important safety information

Caution: Federal (United States) law restricts this device to sale by or on the order of a physician.
See Instructions For Use (IFU) / Directions For Use (DFU) for full prescribing information, including indications, contraindications, warnings, precautions and adverse events.

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