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The Physio-Control LIFEPAK 20 Defibrillator / Monitor includes one set of single-use electrodes.

Note: This is NOT the LIFEPAK 20e. This is the previous model.

Warranty: 90 Days - Parts and Labor.

The Physio-Control LIFEPAK 20 Defibrillator / Monitor has seven main operating modes:

  • Manual Mode: Provides normal operating capability for ALS users.
  • AED Mode: Provides normal operating capability for BLS users.
  • Archive Mode: Allows operator to print, edit or delete previous patient records.
  • Setup Mode: Allows operator to configure the instrument.
  • Service Mode: Allows operator to execute device diagnostic tests and calibrations.
  • Inservice Mode: Provides simulated waveforms for demonstration purposes.
  • Auto Test Mode: Provides daily automatic tests of critical circuits.

This semiautomatic defibrillator uses a patented Shock Advisory System, which analyzes and indicates shockable rhythms using the patient's electrocardiographic rhythms. It guides responders with vocal and visual prompts through the proper steps of application. The configurations available offer non-invasive pacing (for patients with pacemakers) or SpO2 monitoring. The SpO2 monitoring utilizes a pulse oximeter to detect hypoxemia during treatment.

Another configuration option, the CodeManagement Module, is an optional accessory that enables wireless connectivity on the LIFEPAK 20. The device can transfer settings and patient data via Wi-Fi with other caregivers, such as an emergency response team or hospital staff. The data can be stored for medical records and post-event analysis for further treatment. Post-event patient data can also be used for training purposes.


Physio-Control LIFEPAK 20 Defibrillator / Monitor Specifications


  • AC Powered: 90 - 132 VAC 50/60 HZ, 198 - 264 VAC 50/60 HZ, total power draw less than 120 Volt-Amperes (VA).
  • Internal Battery Backup:
    • Battery charges while device operates from AC Power.
    • Typical battery charge time of less than 2.5 hours when device is powered off and AC power is applied.
  • Operating Time: A new fully charged internal backup battery will provide the following prior to shutdown.
    • Monitoring:
      • Total: 120 min.
      • After Low Battery: 5 min.
    • Monitoring with no SpO2:
      • Total: 135 min.
      • After Low Battery: 5 min.
    • Defibrillation (360 J discharges):
      • Total: 90 min.
      • After Low Battery: 3 min.
    • Monitoring Plus Pacing (minutes at 100 mA, 60 ppm):
      • Total: 70 min.
      • After Low Battery: 2 min.
  • Low Battery Indication: Low battery message in status area and warning tone sounds.
  • A Service Indicator: When Error Detected.


  • Weight:
    • Basic defibrillator/monitor with Hard Wired Hard Paddles: 13.6 lb (6.17 kg).
    • Fully featured defibrillator/monitor (Pacing, SpO2, and door) without paper or cables: 12.3 lb (5.58 kg).
  • Size (maximum):
    • Height: 8.4" (21.3 cm).
    • Width: 10.3" (26.2 cm).
    • Depth: 10.3" (26.2 cm).


  • Size (active viewing area): 4.53" (115.18 mm) wide x 3.4" (86.38 mm) high.
  • Display Type:
    • 320 dot x 240 dot color active or passive (base unit only) LCD.
    • User selectable display contrast for LCD (passive only).
    • Displays a minimum of 4 seconds of ECG and alphanumerics for values, device instructions, or prompts.
    • Option to display one additional waveform.
    • Waveform display sweep speed: 25 mm/sec for ECG.


The device captures and stores patient data, events (including waveforms and annotations), and continuous ECG waveform records in internal memory.

  • Report Types:
    • Two format types of CODE SUMMARY critical event record (short and medium).
    • Initial ECG (except short format).
    • Auto vital sign measurements every 5 minutes.
  • Memory Capacity: Two full-capacity patient records that include CODE SUMMARY critical event records - up to 100 single waveform events.


  • ECG: ECG is monitored via several cable arrangements. A 3-wire cable is used for 3-lead ECG monitoring. A 5-wire cable is used for 3-lead ECG plus AVR, AVL, AVF, and C. Standard paddles or therapy electrodes (QUIK-COMBO pacing/ defibrillation/ECG electrodes or FAST-PATCH disposable defibrillation/ECG electrodes) are used for paddles lead monitoring. Compatible with LIFEPAK 12 ECG and Therapy Cables.
    • Lead Selection:
      • Leads I, II, III (3-wire ECG cable).
      • Leads I, II, III, AVR, AVL, AVF, and C acquired simultaneously (5-wire ECG cable).
    • ECG Size: 4, 3, 2.5, 2, 1.5, 1, 0.5, 0.25 cm/mV.
    • Heart Rate Display:
      • 20 – 300 bpm digital display.
      • Out of range indication: Display symbol "---".
      • Heart symbol flashes for each QRS detection.
    • Continuous Patient Surveillance System (CPSS): In AED mode, while Shock Advisory System is not active, CPSS monitors the patient, via QUIK-COMBO paddles or Lead II ECG, for potentially shockable rhythms.
    • Voice Prompts: Used for selected warnings and alarms (configurable on/off).
    • Analog ECG Outlet: 1 V/mV x 1.0 gain < 35 msec delay.
    • Common Mode Rejection: 90 dB at 50/60 Hz.
  • SpO2: Masimo sensors
    • Saturation Range: 1 to 100%.
    • Saturation Accuracy: 70 - 100% (0 - 69% unspecified).
      • Adults/Pediatrics:
        • ± 2 digits (during no motion conditions).
        • ± 3 digits (during motion conditions).
      • Neonates:
        • ± 3 digits (during no motion conditions).
        • ± 3 digits (during motion conditions).
    • Dynamic signal strength bar graph.
    • Pulse tone at the onset of the pleth waveform.
    • SpO2 Update Averaging Rate: User selectable 4, 8, 12 or 16 seconds.
    • SpO2 Measurement: Functional SpO2 values are displayed and stored.
    • SpO2 waveform with autogain control.
    • Pulse Rate Range: 25 to 240 pulses per minute.
    • Pulse Rate Accuracy - Adults/Pediatrics/Neonates:
      • ± 3 digits (during no motion conditions).
      • ± 5 digits (during motion conditions).
  • Alarms
    • Quick Set: Activates alarms for all parameters.
    • VF/VT Alarm: Activates continuous CPSS monitoring in Manual Mode.


Prints continuous strips of the displayed patient information.

  • Paper Size: 50 mm (2").
  • Print Speed:
    • Continuous ECG 25 mm/sec ± 5% (measured in accordance with AAMI EC-11 (1991),
    • 25 mm/sec print speed for CODE SUMMARY Reports.
  • Delay: 8 seconds.
  • Autoprint: Waveform events print automatically (user configurable).


  • Diagnostic Frequency Response: 0.05 to 150 Hz or 0.05 to 40 Hz (user configurable).
  • Monitor Frequency Response: 0.67 to 40 Hz or 1 to 30 Hz (user configurable).
  • Paddles Frequency Response: 2.5 to 30 Hz.
  • Analog ECG Output Frequency Response: 0.67 to 32 Hz (except 2.5 to 30 Hz for Paddles ECG).


  • Manual
    • Energy Select: 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 30, 50, 70, 100, 125, 150, 175, 200, 225, 250, 275, 300, 325, and 360 J or one of two user configurable protocols of three sequential shock levels.
    • Full Range: 100 – 360, 100 – 360, 100 – 360 J.
    • Pediatric: 2 – 100, 2 – 100, 2 – 150 J.
    • Charge Time:
      • Charge time to 200 J in less than 5 seconds with fully charged battery.
      • Charge time to 360 J in less than 7 seconds with fully charged battery.
      • Charge time to 360 J in less than 10 seconds while not in low battery operations.
    • Synchronous Cardioversion:
      • Energy transfer begins within 60 msec of the QRS peak.
      • Energy transfer begins with 25 msec of the External Sync Pulse.
      • External Sync Pulse: 0 - 5 V (TTL Level) Pulse, active High, > 5 msec in duration, no closer than 200 msec apart and no further than 1 sec apart.
    • Waveform:
      • Biphasic Truncated Exponential.
      • The following specifications apply from 25 – 200 Ω, unless otherwise specified.
      • Energy Accuracy: +1 J or 10% of setting, whichever is greater, into 50 Ω; +2 J or 15% of setting, whichever is greater, into any impedance from 25 – 100 Ω.
      • Voltage Compensation: Active when disposable therapy electrodes are attached. Energy output within +5% or +1 J, whichever is greater, of 50 Ω value limited to the available energy which results in the delivery of 360 J into 50 Ω.
    • Paddle Options:
      • QUIK-COMBO pacing/defibrillation/ECG electrodes (standard).
      • FAST-PATCH disposable defibrillation/ECG electrodes (optional).
      • Standard Paddles (optional).
      • Internal Handles with discharge control (optional).
      • External Sterilizable Paddle (optional).
    • Cable Length: 2.4 m (8 ft) long QUIK-COMBO cable (not including electrode assembly).
  • AED Mode
    • Shock Advisory System (SAS): ECG analysis system that advises the operator if the algorithm detects a shockable or nonshockable ECG rhythm. SAS acquires ECG via therapy electrodes only.
    • Shock Ready Time (AED Mode): Using a fully charged battery at normal room temperature, the device is ready to shock within 16 seconds of power on, if the initial rhythm finding is SHOCK ADVISED.
    • Output Energy: One user configurable protocol with three sequential shock levels.
    • Full Range: 150 – 360, 150 – 360, 150 – 360 J.


  • Pacing Mode:
    • Demand or non-demand.
    • Rate and current defaults (user configurable).
  • Pacing Rate: 40 to 170 ppm.
  • Rate Accuracy: ± 1.5% over entire range.
  • Output Waveform: Monophasic, amplitude stable to ± 5% relative to leading edge for currents greater than or equal to 40 mA, Duration 20 ± 1 msec, Rise/Fall times <= 1 msec [10 - 90% levels].
  • Output Current: 0 to 200 mA.
  • Pause: Pacing pulse frequency reduced by a factor of 4 when activated.
  • Refractory Period: 200 to 300 msec ± 3% (function of rate).


  • Operating Temperature: 5 to 45 °C (41 to 113 °F).
  • Non-Operating Temperature: -20 to 60 °C (-4 to 140 °F) except therapy electrodes.
  • Relative Humidity, Operating: 5 to 95%, non-condensing.
  • Atmospheric Pressure, Operating: Ambient to 522 mmHg (0 to 3048 meters) (0 to 10,000 ft).
  • Water Resistance, Operating (without accessories except for ECG Cable and Hard Paddles): IPX1 (spillage) per IEC 60601-1 clause 44.6.
  • EMC:
    • IEC 60601-1-2:2001/EN 60601-1-2:2001, Medical Equipment.
    • General Requirements for Safety-Collateral Standard: Electromagnetic Compatibility-Requirements and Tests.
    • IEC 60601-2-4:2002; Clause 36/EN 60601-2-4:2003: Clause 36, Particular Requirements for the Safety of Cardiac Defibrillators and Cardiac Defibrillator monitors.
  • Shock (drop): 1 drop on each side from 45.7 cm (18 in.) onto a steel surface.
  • Vibration: MIL-STD-810E Method 514.4, Cat 1.


  • Respiration, Leads Off Sensing, Noise Cancellation Current, and Voltage: The ECG leads off function uses AC current for sensing leads off, the disposable defibrillation electrodes use AC current for leads off, and the ECG leads use a noise cancellation signal which ranges from dc to approximately 5k Hz. The amplitude of these signals conforms to AAMI EC-11 3.2.10 and EC-13 (1992) 3.2.5.
  • Heart Rate Averaging Method: The heart rate average is formed by a weighted average of approximately 8 seconds duration. When the input rate is trending rapidly, the rate meter will track more quickly. refer to heart rate response time disclosure. The display update interval is every heartbeat or every 2 seconds, whichever is shorter.
  • Heart Rate Response Time: Heart rate meter response time: For an 80 to 120 bpm step change, the response time is 5.5 seconds average with a range of 4.9 to 6.2 seconds when tested per AAMI EC-13 f. For an 80 to 40 bpm step change, the response time is 5.6 seconds with a range of 5.0 to 6.4 seconds.
  • Heart Rate With Irregular Rhythm: All complexes are detected. The rate meter output can range from the heart rate associated with the shortest R-R interval to the heart rate associated with the longest R-R interval. When present, intermediate length R-R intervals are favored as the basis for the rate.
  • Heart Rate Alarm Time:
    • In five trials for a 1 mV, 206 bpm tachycardia, the average detection time was 7.1 seconds. The maximum detection time was 7.9 seconds. The minimum time was 5.6 seconds.
    • For a test signal half as large, the average was 6.1 seconds, the maximum was 6.4, and the minimum was 5.7. In this case the device sensitivity was increased to 5 mV/cm.
    • For a test signal twice as large, the average was 5.7 seconds, the maximum was 6.3, and the minimum was 5.1. In five trials for a 2 mV, 195 bpm tachycardia, the average detection time was 6.2 seconds. The maximum detection time was 7.1 seconds. The minimum time was 5.8 seconds.
    • For a test signal half as large, the average was 6.0 seconds, the maximum was 6.7, and the minimum was 5.4. In this case the device sensitivity was increased to 5 mV/cm.
    • For a test signal twice as large, the average was 6.0 seconds, the maximum was 6.4, and the minimum was 5.8.
  • Accuracy Of Signal Reproduction: The device is a digital sampled data system. It meets requirements for both test methods for diagnostic frequency response described in EC11 section
  • Audible Alarms:
    • This is a standalone device. All alarm tones are internal to the biphasic LIFEPAK 20 defibrillator/monitor.
    • Alarm violations are manifest by tones, voice prompts, and visual indications.
    • Alarm manifestation occurs within 1 second after a displayed parameter violates its alarm limit. User selectable alarm volume adjustment is provided. This adjustment does not allow alarm volume to attain/reach a zero level.
    • SAS tones reinforce SAS messages provided on the product display.
    • The following identifies the tone assignments for each type of alarm:
      • The priority 1 tone is used to alert the user to the possibility of imminent death. This tone is a 440 Hz and 880 Hz alternating tone with a 50% duty cycle and a 4 Hz alternation frequency. This tone has a volume of 70 ± 5 dB (A) as measured at a distance of 1 meter from the display.
      • The priority 2 tone is used to alert the user that a possible life-threatening condition exists. This tone is a continuous 698 Hz tone.
      • The priority 3 tone is used to alert the user that an abnormal condition exists. Three beeps at 1046 Hz for 100 msec duration each with a 150 msec silence between the first and second and the second and third, followed by a 200 msec silence.
      • Priority 3 tones come in single and repeating types: for a single tone, the 3-beep sequence sounds only once. For a repeating tone, the 3-beep sequence sounds every 20 seconds.
      • The priority 4 tone is a momentary tone between 500 and 1500 Hz. Specific characteristics are:
        • QRS and Volume Setting Tone - 100 msec duration at 1397 Hz.
        • Key click - 4 msec duration at 1319 Hz.
    • The alert tone shall consist of one set of two tones to precede voice prompts and to draw attention to the display. Specific characteristics shall be:
      • 1000 Hz square wave, 100 msec duration.
      • Silence, 100 msec duration.
      • Silence, 140 msec duration (when preceding a voice prompt).
      • Voice prompt, when used.
  • Visual Alarms:
    • Alarms are indicated visually by:
      • The violated parameter flashes in inverse video with a message in the status region of the display.
      • These visual indications remain on the display until the alarm is corrected. Visual indication of alarms continue even when the tones have been silenced.
  • Alarm Silencing:
    • If a violated parameter alarms, the tone may be silenced for two minutes by pressing the Alarms button.
    • A preemptive alarm silence is provided with selectable settings of 2, 5, 10, and 15 minutes.
    • Visual alarms remain on at all times.
  • VF/VT Alarm: Automatically monitors the patient's ECG rhythm for a potentially shockable rhythm using the Continuous Patient Surveillance System (CPSS). The VF/VT alarm requires that the patient's ECG be monitored in Lead II or Paddles lead using therapy electrodes. The VF/VT alarm will be suspended if pacing is enabled or Standard paddles are connected and Paddles is the displayed lead.
  • Energy Shunting: If the paddles input is connected in parallel with a second defibrillator, energy delivery to the patient is reduced by less than 10 percent.
  • Tall T-wave Rejection: T-waves that are 1 mV high are not detected by the monitor when the R-wave size is 1 mV and input rate is 80 ppm.
  • Charge Time:
    • For battery-only operation (using a new, fully charged battery): The defibrillator charge time to 360 J is less than 10 seconds, following 15 full energy discharges, per IEC 60601-2-4.
    • For AC operation: With a new, fully charged battery, the defibrillator charge time to 360 J is less than 10 seconds, at 90% of rated nominal Mains voltage, per IEC 60601-2-4.
  • Displayed SpO2: The LIFEPAK 20 defibrillator/monitor is calibrated to display functional saturation, which is the standard for SpO2.


Physio-Control LIFEPAK 20 Defibrillator / Monitor Configurations

  • #MFI-PCT-LP20: Standard (No Pacing, SpO2, or CodeManagement Module).
  • #MFI-PCT-LP20-PSCM: With Pacing, SpO2 Package, and CodeManagement Module.


Physio-Control LIFEPAK 20 Defibrillator / Monitor Accessories

These are commonly purchased accessory items for the LIFEPAK 20 Defibrillator / Monitor. Please note that these are NOT included with purchase of the defibrillator. They are sold separately.

  • #11260-000045: LIFEPAK 20 / 20e Carry Case.
  • #21330-000996: LIFEPAK 20 / 20e Docking Station.
  • #11998-000320: Ambu Res-Cue First Responder Kit - With Disposable CPR Barrier.
  • #11998-000321: Ambu Res-Cue First Responder Kit - With Reusable CPR Barrier, Valve, and Filter.

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