When using a defibrillator, do not introduce discharges of 360 joules or more, repeated five times
over 5 minutes. Read the safety instructions provided with the defibrillator. The MR400 cart is
designed to withstand defibrillation and will recover within 5 seconds (per IEC 60601-1,
Requirements for the Safety of Medical Electrical Equipment, and IEC 60601-2-49, Particular
requirements for the basic safety and essential performance of multifunction patient monitoring
Positioning the MR400
During use, station the cart at a safe monitoring distance in the MR
magnet room then press down on each wheel lock to engage it. (When
the cart needs to be moved, raise each wheel lock before proceeding).
Use the guide handle to move and position the MR400. Always place the
MR400 so that your view of the screen and alarm light will remain unobstructed during use.
Never lean against or apply excessive force to the guide handle.
3‐2 Getting Started Expression MR400 Instructions for Use
The patient connector inputs for all parameters are protected against the use of a
defibrillator by internal circuitry when the recommended patient cables or accessories
Defibrillation and electrosurgery: Do not touch the patient, or table, or instruments,
during defibrillation. This equipment does not provide protection against burning of
The MR400 can be used in the presence of defibrillators or electrosurgery units,
provided the equipment being used is in good working order, meets appropriate safety
standards, is properly grounded and is operated correctly in the appropriate manner
and environment. Improperly grounded equipment can be a safety hazard and can
also cause interference to the ECG signal and result in a noisy ECG signal waveform
and inaccurate heart rate measurements.
Electrosurgical unit overloads may cause damage to this device.
To minimize risk of damage to the MR400 during defibrillation, use only the
manufacturer's specified accessories and supplies.
This equipment does not meet electrosurgical interference suppression (ESIS)
requirements as stated in EC13, sub clause 188.8.131.52, as the ECG trace will temporarily
disappear from the display during cut or coagulation bursts.