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MRx Training with Q-CPR. ROC Refresher & EMT/ EKG monitoring parameters. System Components. Therapy/CPR Cable. Compression Sensor. MRx Defib Pads. Basic Orientation. Ready for use indicator Therapy knob Charge Button Shock Button Printer Printer button Speaker.

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mrx training with q cpr

MRx Training with Q-CPR

ROC Refresher


EMT/ EKG monitoring parameters

system components
System Components

Therapy/CPR Cable

Compression Sensor

MRx Defib Pads

basic orientation
Basic Orientation
  • Ready for use indicator
  • Therapy knob
  • Charge Button
  • Shock Button
  • Printer
  • Printer button
  • Speaker
basic orientation cont
Basic Orientation cont.
  • Menu select button
  • Navigation buttons
  • 4 soft keys
  • Event summary
  • Alarm pause
  • Lead select
  • Event mark button
patient connections
Monitoring on the Left

3-lead patient cables

Spare electrodes

Defib on the Right

Patient / defib cable

Q-CPR puck

Shock test load plug

Defib patches


Patient connections
ready for use indicator
Ready For Use Indicator

Blinking Black Hourglass – Shock, pacing, and ECG are ready for use and sufficient battery power is available


Blinking Red X with a periodic chirp – Low battery that is not being charged

Blinking Red X without a periodic chirp – Low battery that is being charged


Solid Red X with a chirp – A failure has been detected that may prevent delivery of a shock, pacing, or ECG acquisition

Solid Red X without a chirp – No power or device failure

compression measurement
Compression Measurement

Compression Sensor

  • The sensor is…
  • Reusable
  • Easy to clean
  • Acts as landmark
  • Goes where your
  • hands would go
  • Weighs 8 Ounces
  • What the sensor does…
  • Detects motion using and accelerometer
compression measurement1
Compression Measurement

Compression Sensor

  • Measurements:
  • Compression Depth
  • Compression Rate
  • Leaning (incomplete release)
  • Duty Cycle (duration)
  • No Flow Time (inactivity timer)

Sensor Adhesive Pad

compression measurement2
Compression Measurement
  • Compression rate is moving average
  • of last 3 compressions
  • Target compression depth of 1.5 - 2 inches
  • indicated by lines
  • Incomplete release (“Leaning”)
  • is indicated by “*” on waveform
ventilation measurement




Volume (ml per Kg)

Impedance Change (Ohms)

Ventilation Measurement
  • A new role for our multifunction pads…
  • Detect changes in chest impedance
  • that correlate to ventilation volume

This is a new application

of a proven principle

ventilation measurement1
Ventilation Measurement
  • Ventilation rate is moving average
  • of last 3 ventilations
  • Ventilation Volume Icon shows
  • 0, 1/3, 2/3 or 1+ of the target volume
  • Inactivity timer -- “30 Seconds without ventilation”
real time feedback
Real-Time Feedback
  • Q-CPR Feedback is…
  • Corrective -- it speaks up only when you need it
  • Prioritized -- based on clinical importance
  • User Friendly -- user is given time to react (3-4 sec.)
real time feedback1
Real-Time Feedback

Clinical Priorities*


1. Incomplete Release

2. Compression depth shallow

3. Compression rate slow or fast

4. Compression depth deep

5. Duty Cycle


1. Volume low

2. Frequency high or low

3. Inflation time fast or slow

* These priorities were set based on an evaluation

of published research data.

m3538a lithium ion batteries
M3538A Lithium Ion Batteries
  • Batteries should be used as primary power source.
  • Fully charged battery will last 5-hours or 50-shocks.
  • No memory build up but should not be allowed to go dead.
  • Fuel cell is broken up into 5 LED’s or 20%
  • Full charge takes about 2-3 hours
  • Life expectancy is 2-years
maintenance activities
Maintenance Activities
  • Observe Ready for Use indicator.
  • Once a week, perform an Operational Check and Shock Test.
  • Care for batteries.
  • Clean MRx and accessories.
performing an operational check
Insert a charged battery (> 20%).

Turn the Therapy Knob to Monitor.

Press the Menu Select button.

Using the Navigation buttons, select Other.

Select Operational Check.

Respond to the prompts.

Performing an Operational Check
operational check summary
Operational Check Summary
  • Shows results of the last 60 Operational Checks
  • To print:
  • Select Other from the Main menu.
  • Select Op Check Summary.
  • Press the [Print] soft key.
data transfer to card
Data Transfer to card
  • Turn MRX to Monitor
  • Press the Menu Button
  • Select “Other” then Select “Data Management”
  • Press Menu & acknowledge the message
  • Select appropriate “EVENT”
  • Press “Menu” then select “Copy”
  • Place Data card in Defib Envelope!
cpr reporting
CPR Reporting
  • BLS & ALS MIRF’s
  • BLS AED Data card & ALS card if placed prior to ROSC
  • Dispatch / RMS report
  • ROC Protocol check sheet
  • Phone call to ROC Study within 1 hour
  • Data transfer to County server within 24-hours

ROC Study Protocols

  • Purpose of an ITD Valve
  • Analyze Early or Analyze Late
itd valve


ITD Valve
  • Impedance Threshold Device
  • ITD is a circulation adjunct not a ventilation adjunct.
  • Increases blood flow back to the heart during the recoil phase of chest compression.
analyze early analyze late


Analyze Early/Analyze Late
  • Analyze Early:
    • 1 round (30 compressions) of priming before AED analysis
    • Business as usual in King County
  • Analyze Late:
    • Longer period of priming before AED analysis
    • 3 minutes of CPR before first analysis
target population itd and ae al
Target Population: ITD and AE/AL

Patients 18 years of age or greater who suffer non-traumatic cardiopulmonary arrest outside of hospital.

Enroll all NON-traumatic CPR cases,


exclusion criteria itd and ae al
Exclusion Criteria: ITD and AE/AL

Less than 18 years of age

Trauma cardiac arrest

DNAR orders in place

Known Pregnancy

Known Prisoner / In Custody

exclusion criteria specific to itd
Exclusion Criteria: Specific to ITD

Tracheostomy present

AE/AL use is appropriate in this case.

exclusion criteria specific ae al
Exclusion Criteria: Specific AE/AL

Analyze early or analyze late should NOT be used if:

EMS-witnessed arrest

AED applied by non-ROC agency (lay person/police/private AMB)

ITD use is appropriate in both cases.

removal of itd
Removal of ITD

Remove ITD immediately if:

1. Patient gets a pulse (ROSC)

2. Device fills with fluid twice, or cannot be cleared

3. Arrival at ED

4. No chest rise with patent (open) airway

study protocol 1 analyze early
Study Protocol #1—Analyze Early

1 round of CPR/Attach ITD valve

Shock (if indicated)

CPR Protocol

study protocol 2 analyze late
Study Protocol #2—Analyze Late

3 minutes of CPR/Attach ITD valve

Shock (if indicated)

CPR Protocol

emt ekg monitoring


  • What do we need to know about EKG’s?
  • What “Guidelines” should we use to place the monitor on someone?
electro what
Electro what???
  • Rate ? Slow – Normal – Fast
  • P wave? Present or absent
  • Regular ? Regular or irregular spacing
  • Narrow or Wide? Width of QRS?
  • Rhythm? Who cares anyways????
ventricular fibrillation
Ventricular Fibrillation
  • Frequency - Tachyarrhythmia
  • Amplitude - Minimum
  • Waveform - Chaotic, Varying, Wide, Unorganized
emt ekg monitoring1


  • What do we need to know about EKG’s?
    • Is there a pulse with every QRS?
    • How fast or How slow is it?
    • Is it wide or narrow?
  • What “Guidelines” should we use to place the monitor on someone?
    • A medical patient who you need to evaluate for a potential arrhythmia….. Who is that?
    • When in doubt ask for assistance……… 
any questions

Any Questions?

Thank You


Good Luck!!!!!