Neuromuscular management changes throughout every case. The information clinicians need during induction is different from what they need during maintenance, reversal, and recovery.
Powered by EMGINE™, TetraGraph transforms quantitative EMG data into intelligent, patient-specific information across four critical stages of care:
Objective insight before intubation.
The TetraGraph Intubation Readiness Indicator uses the T1/Tc ratio to quantify suppression of the first twitch relative to control, providing objective insight into neuromuscular block depth during induction and supporting informed timing of tracheal intubation.
Stay aligned with the patient—and the surgical plan.
During maintenance, patient response, surgical requirements, and workflow can change quickly. TetraGraph continuously measures neuromuscular function while intelligent automation and personalized case prompts help clinicians manage block throughout the procedure.
From monitoring what has happened to anticipating what comes next.
Predictive Recovery provides an at-a-glance indication of whether a patient is likely to recover to TOFR ≥0.90 without reversal within the next 15 minutes, helping clinicians personalize recovery planning and make more informed reversal decisions.
Predict recovery. Consider reversal. Or wait and reassess.
Prove recovery before the case ends.
Confirm quantitative recovery to TOFR ≥0.90, then close the case with a concise end-of-case summary including the trend overview, total case time, and TOFR when monitoring was paused or stopped.
From readiness to recovery, TetraGraph helps tell the complete neuromuscular management patient journey.
EMGINE™ integrates intelligent automation into the neuromuscular monitoring workflow—helping clinicians optimize signal quality, reduce manual adjustments, and maintain reliable monitoring from induction through recovery.
Built on decades of science and powered by EMGINE™, next-generation TetraGraph combines advanced EMG algorithms, real-world data, and the proprietary Level-of-Block Gauge™ to deliver intelligent, personalized neuromuscular monitoring from induction through recovery.
Next-generation TetraGraph combines advanced electromyography with the EMGINE™ software platform to deliver precise, reliable neuromuscular measurements and intelligent software-driven insights throughout the perioperative continuum.
Its advanced EMG algorithm has been refined using more than six billion real-world data points and analyzes muscle function at four times higher resolution compared with TetraGraph Classic.
Algorithms help optimize signal strength and automate monitoring workflows from induction through recovery.
High-resolution quantitative measurements across all levels of neuromuscular block.
The proprietary Level-of-Block Gauge™ turns complex quantitative information into an easy-to-interpret view of the patient's current state and trend.
Portable design, flexible mounting, EMG sensors for diverse patients and connectivity to supported multiparameter monitors and EHR infrastructure.
TetraGraph features an intuitive interface, so clinicians can easily view and analyze patient data trends, enhancing decision-making and patient management throughout the perioperative period, including both real-time and post-procedure reviews.
Designed with versatility in mind, TetraGraph effortlessly adapts to any operating room environment. It connects seamlessly with external multiparameter monitors and electronic health records (EHR), maximizing efficiency and enhancing patient care.
Our flexible EMG sensors and mounting options accommodate various surgical procedures, including those with space and movement limitations like tucked-arm and robotic cases.
Adaptable for adult patients, ensuring precise neuromuscular monitoring for a wide range of surgical applications.
Ultrasoft, flexible material and FDA-cleared EMG sensor with a specific pediatric indication, streamlining one sensor for infants to adolescents.
| TetraGraph EMG | Other EMG devices | |
|---|---|---|
| Clinically validated at all levels of block, including deep and profound blocks | Yes | No |
| Proprietary Level-of-Block Gauge™ for easy-to-interpret, high-resolution, real-time display of individual EMG readings, waveforms (CMAPs) and trends | Yes | No |
| TetraGraph Series of Algorithms, powered by EMGINE, aids in signal strength optimization, intubation readiness, and predictive recovery, providing objective data throughout the case | Yes | No |
| Backed by over 40 years of research, and developed with insights from global leaders in anesthesiology | Yes | No |
| Advanced EMG algorithm with 4 times higher resolution when compared to TetraGraph Classic, superior artifact handling, and noise cancellation without the need for extra (ground) electrodes. | Yes | No |
| Complete sensor portfolio, from infants to adults with sensitive skin | Yes | No |
Our buyer's guide compares quantitative and qualitative monitoring technologies, outlines five essential evaluation criteria, and quantifies the impact on patient outcomes and total cost of care.
TetraGraph® is supported by clinical evidence demonstrating accurate, consistent quantitative EMG measurements across all levels of neuromuscular block—from deep block through recovery—and supporting informed clinical decisions throughout the case.
Quantitative monitoring can support better-informed timing of tracheal intubation.
In a 2026 randomized prospective study, 73% of patients in the TetraGraph-monitored group achieved ideal intubating conditions compared with 57% in the standard time-based group (p=0.036).
The study also demonstrated an association between greater first-twitch suppression and improved intubating conditions, supporting the use of quantitative neuromuscular monitoring to objectively assess block depth during induction.
Reference: Renew JR, et al. Journal of Clinical Anesthesia. 2026;108:112066.
Accuracy from deep neuromuscular block through recovery.
TetraGraph EMG has been clinically validated against mechanomyography (MMG) across TOF ratio, TOF count, and post-tetanic count measurements, demonstrating strong correlation with the clinical reference standard, including during deep neuromuscular block.
Reference: Ebert TJ, et al. Journal of Clinical Monitoring and Computing. 2024.
Confidence when confirming recovery matters most.
A 2024 study published in Anesthesiology comparing quantitative neuromuscular monitors with mechanomyography demonstrated that TetraGraph produced baseline TOF-ratio measurements closely aligned with the reference standard, reinforcing its accuracy and precision for quantitative neuromuscular monitoring.
Reference: Wedemeyer Z, et al. Anesthesiology. 2024.
TetraGraph combines clinically validated EMG technology with advanced algorithms designed to deliver reliable quantitative information throughout neuromuscular management, from readiness for intubation through confirmation of recovery.
From intubation readiness to recovery safety, discover how next-generation TetraGraph powered by EMGINE™ supports informed decisions throughout the patient journey.
TetraAnalytics™ is an adjunct solution to TetraGraph® that securely transfers monitoring data to the cloud, transforming patterns across cases into actionable insights that can improve patient safety, outcomes, workflows, and economics.
With intuitive dashboards and key performance metrics, TetraAnalytics helps organizations evaluate neuromuscular block management at scale, monitor adherence to clinical guidelines, identify trends, and measure improvement over time.
Key benefits:
A complete overview of the next-generation TetraGraph, including tech specs
Three unique trend views to elevate clinical confidence
Note: The TetraGraph system is available in the United States through 510(k) clearance. It is also available in Australia and Japan. In the European Economic Area (EEA), it is available with CE certification, subject to local language translation requirements. For availability in other regions, please contact us.
