Protecting Every Patient in the Operating Theatre
Intraoperative Neuromonitoring (IONM) with the Cadwell Guardian — real-time neural surveillance that keeps surgeons informed and patients safe throughout complex procedures.
What is Intraoperative Neuromonitoring?
Intraoperative Neuromonitoring (IONM) is the continuous, real-time assessment of the nervous system's functional integrity during surgical procedures. By recording electrophysiological signals — including somatosensory evoked potentials (SSEPs), motor evoked potentials (MEPs), electromyography (EMG), and brainstem auditory evoked potentials (BAEPs) — IONM provides the surgical team with an immediate window into neural function.
When a monitored signal changes beyond defined alert criteria, the IONM team notifies the surgeon in real time, enabling corrective action before a transient neural insult becomes a permanent deficit. This feedback loop has made IONM the standard of care in spinal, vascular, and skull-base surgery worldwide.
Real-Time Alerts
Immediate notification of neural changes
Multi-Modality
SSEP, MEP, EMG, BAEP, EEG, NCS
Standard of Care
Mandated in spinal & vascular surgery
Prevents Deficits
Enables corrective action before injury
Monitoring Modalities
The Cadwell Guardian supports the full spectrum of IONM modalities in a single integrated platform.
Somatosensory Evoked Potentials
Monitors the dorsal column sensory pathways. The gold standard for spinal cord and peripheral nerve integrity during orthopaedic and vascular procedures.
Motor Evoked Potentials
Transcranial electrical stimulation of the motor cortex assesses corticospinal tract integrity — critical for detecting motor deficits before they become irreversible.
Electromyography
Free-run and triggered EMG detects nerve root irritation and pedicle screw proximity in real time, guiding safe instrumentation placement.
Brainstem Auditory Evoked Potentials
Monitors the auditory nerve and brainstem during posterior fossa and acoustic neuroma surgery to preserve hearing and facial nerve function.
Electroencephalography
Continuous cortical monitoring during carotid endarterectomy and cardiac surgery detects cerebral ischaemia under anaesthesia.
Nerve Conduction Studies
Intraoperative NCS maps peripheral nerve continuity and guides resection margins in tumour and trauma surgery.
Cadwell Guardian IONM System
Exclusive India DistributionThe most trusted IONM platform in North America — now available across India through Kaushal Medicare Systems.
The Cadwell Guardian is a purpose-built intraoperative neuromonitoring workstation designed for the demands of the modern operating theatre. Its modular architecture supports up to 64 channels of simultaneous recording, covering every IONM modality in a single compact unit. The Guardian's intuitive interface reduces technologist cognitive load during critical moments, while its robust signal processing delivers clean traces even in electrically noisy surgical environments.
Up to 64 channels
Simultaneous multi-modality recording
Real-time alerts
Configurable amplitude and latency thresholds
Compact footprint
Designed for space-constrained ORs
Remote monitoring ready
Supports off-site neurophysiologist oversight
Full modality support
SSEP, MEP, EMG, BAEP, EEG, NCS
Cadwell quality
45+ years of neurodiagnostic excellence
The Cadwell Guardian — trusted by leading neuromonitoring programmes across North America and now available in India exclusively through Kaushal Medicare Systems.
Learn about CadwellSurgical Applications
IONM with the Cadwell Guardian is indicated across a broad range of high-risk surgical specialties.
Spinal Surgery
- Scoliosis correction
- Lumbar fusion & instrumentation
- Cervical decompression
- Tumour resection
Continuous SSEP and MEP monitoring detects cord compromise during correction manoeuvres, reducing the risk of postoperative neurological deficit.
Cardiac & Vascular Surgery
- Carotid endarterectomy
- Thoracic aortic repair
- CABG with circulatory arrest
- Endovascular aortic repair
EEG and SSEP monitoring during carotid and aortic procedures provides real-time ischaemia detection, guiding shunt placement and perfusion management.
ENT & Skull-Base Surgery
- Acoustic neuroma resection
- Parotid gland surgery
- Thyroid & parathyroid surgery
- Posterior fossa tumours
Facial nerve EMG and BAEP monitoring during skull-base procedures preserves cranial nerve function and guides safe tumour dissection.
Orthopaedic Surgery
- Pedicle screw placement
- Hip arthroplasty
- Peripheral nerve repair
- Limb salvage procedures
Triggered EMG for pedicle screw testing and SSEP monitoring during hip procedures reduces iatrogenic nerve injury and implant malposition.
The KMS Advantage
Exclusive Cadwell Distributor
As India's sole authorised distributor of Cadwell systems, we provide genuine equipment, direct manufacturer support, and full warranty coverage.
Clinical IONM Training
Our neurophysiology specialists provide comprehensive training for surgeons, anaesthesiologists, and IONM technologists — from equipment setup to alert interpretation.
Pan-India Installation & Service
Dedicated biomedical engineers across India ensure rapid installation, preventive maintenance contracts, and minimal OR downtime.
Programme Development Support
We help hospitals build IONM programmes from scratch — staffing models, protocol development, billing guidance, and quality benchmarking.
Bring IONM to Your Operating Theatre
Whether you are establishing a new IONM programme or upgrading existing equipment, our team will guide you from site assessment to first monitored case.