laerdal Moyo User Manual
Moyo
Fetal Heart Rate Monitor
User Guide
EN
www.laerdalglobalhealth.com
Intended Use
The "Moyo - Fetal Heart Rate Monitor" by Laerdal Global Health is intended for healthcare professionals to
monitor fetal heart rate during labor. Moyo uses a Doppler ultrasound sensor to measure and analyze the
fetal heart rate. The calculated fetal heart rate is presented on the display together with an audible (doppler)
sound. Moyo provides an alarm in the case of prolonged abnormal fetal heart rate.
Intended medical indication is to screen for or monitor fetal distress on pregnant women - particularly in
the setting of labor.
There are no known contraindications to the use of Moyo.
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Illustrations in this User Guide may vary from actual product.
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1 Overview 4
2 Cautions & Warnings 5
3 Getting Started 7
4 Alarms 15
5 Cleaning & Charging 21
6 Features in Detail 29
7 Troubleshooting 43
8 Technical Description 47
Contents
Overview
Items included: 1 Moyo main unit with ultrasound sensor, 1 neck strap, 3 reusable
abdominal transducer belts, 1 charger, 1 charger cable and this User Guide.
Speaker
Status Light
Display
Maternal heart rate pads (electrodes) *
Power on/off button
Speaker on/off button
History graph button
Ultrasound
transducer
(sensor) *
Cable
* Patient applied part
4
Cautions & Warnings
Please ensure that following precautions are taken to ensure that Moyo functions properly
during use.
This product is intended for use by authorized healthcare professionals only.
Read this User Guide and become familiar with the operation of the device prior to use.
The device is intended for monitoring only one fetus at a time. In case of monitoring of
multiple fetuses, alternative devices/methods should be used.
In case the device displays erratic or unreliable FHR, try to reposition the ultrasound
transducer or use alternative monitoring devices/methods.
Excessive handling and movement of the product may cause lost or erroneous heart rate
readings.
Do not connect the charger to Moyo while in use with a patient.
Turn off device and clean/disinfect between patient uses.
Additional equipment connected to medical electrical equipment must comply with
the respective IEC or ISO standards (e.g. IEC 60950 for data processing equipment).
Furthermore all configurations shall comply with the requirements for medical electrical
systems (see IEC 60601-1-1 or clause 16 of the 3rd ed. of IEC 60601-1, respectively).
Anybody connecting additional equipment to medical electrical equipment configures
a medical system and is therefore responsible that the system complies with the
requirements for medical electrical systems. Attention is drawn to the fact that local
laws take priority over the above mentioned requirements. If in doubt, consult your local
representative or the technical service department.
Do not modify this equipment without authorization of the manufacturer. If this
equipment is modied, appropriate inspection and testing must be conducted to ensure
continued safe operation.
Take special precautions regarding electromagnetic compatibility (EMC) when using
medical electrical equipment. You must operate your monitoring equipment according to
the EMC information provided:
• Measurements can be affected by ESD, portable and mobile RF communications
equipment.
• Use of high frequency electrosurgical equipment in the vicinity of this equipment
may produce interference and cause incorrect measurements.
Do not immerse this product in liquid.
Use of Moyo does not replace clinical supervision.
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3
Getting Started
To start operating Moyo, you need to learn the basic functions first.
Getting Started
To get started, this manual will take you through a few simple scenarios where
you will learn the main functions of Moyo.
What you need:
MOYO
Abdominal transducer belt
Ultrasound gel
Only water-based ultrasound gel should be used. If ultrasound gel is not available, water
can be used for short time monitoring.
You should charge Moyo's battery regularly to ensure that it is always ready for use.
To learn more about how to charge Moyo, refer to page 28.
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Getting Started
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CONFIGURATION
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Use sequence
15:36
To start using Moyo, press and hold the power button
PRACTICE OBSERVE
Do you see the display turning on?
Turn on Moyo.
Do you hear the startup sound?
If you encountered a problem, go to
Troubleshooting on page 43.
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Getting Started
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CONFIGURATION
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Use sequence
15:36
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means that no heart rate (HR) is found by the sensor.
SIMULATION NOTE
You can tap on the sensor to manually simulate a HR when there is no dedicated FHR
simulator available.
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Getting Started
To measure fetal heart rate (FHR), you first need to apply gel on the ultrasound sensor
and place it on the mother’s abdomen (if possible over the fetal back). If no HR sound is
heard, reposition the ultrasound sensor until you hear the rhythmic HR sound.
Palpate to identify fetal position. Best results will be achieved with the ultrasound sensor
placed over the fetal back.
PRACTICE
Apply gel on the ultrasound sensor.
Place the ultrasound sensor on the mother’s abdomen.
(Reposition the ultrasound sensor if you do not hear a rhythmic HR sound)
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Getting Started
Moyo shows a HR number.
Green color means that HR is in the normal range for a fetus.
You can hear rhythmic HR sound from the speaker.
Notice when FHR is shown, the status light blinks at the same rate as the FHR together
with the rhythmic HR sound.
To silence the Doppler sound, press "speaker on/off" button. Note that audible alarms will
still be provided.
OBSERVE
Do you hear the rhythmic HR sound?
Do you read the numbers on the display?
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CONFIGURATION
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Use sequence
15:36
Getting Started
If you are not sure that the found heart rate is the fetal, you can instruct the mother
to hold the pads to measure mother’s HR. If the two numbers are similar, then the HR
found by the ultrasound sensor might be the maternal HR.
The ultrasound sensor might measure or be affected by mother's HR, a twin (multiples)
or excessive patient movement/handling. In case the device displays unreliable or erratic
FHR, try to reposition the ultrasound transducer or use alternative monitoring devices/
methods.
Refer to page 32 for details about the maternal HR display.
PRACTICE
Compare the HR found by the ultrasound sensor with the maternal HR.
Instruct the mother to hold the pads.
Getting Started
When you are sure that you have found the FHR, tighten the abdominal transducer belt
around the mother to secure the ultrasound sensor in place.
PRACTICE
Keep the sensor in place using the abdominal transducer belt.
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4
Alarms
Moyo provides alarms if the FHR is lost or if prolonged abnormal
FHR is detected. In this chapter, you will learn about the alarms.
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Alarms
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CONFIGURATION
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Use sequence
15:36
Lost FHR alarm
Moyo will give an alarm if the ultrasound sensor has not picked up any HR for 60 seconds.
You will see the
blinking, and hear an alarm sound.
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If you hear the alarm, press the speaker button to silence (acknowledge) the
alarm.
PRACTICE OBSERVE
Remove the ultrasound sensor
from the mother, or stop
Did you hear the alarm sound?
Did you silence the alarm?
simulating FHR, and wait more
than 60 seconds.
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Alarms
When
If FHR is not found after repositioning the sensor, continue monitoring according to your
medical procedures, e.g. using alternative devices to obtain FHR.
If you are not sure that the detected heart rate is the fetal, you can instruct the mother
to hold the pads to obtain the maternal HR for comparison.
is shown, reposition the ultrasound sensor to find the FHR.
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PRACTICE
Search and find the FHR.
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