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Müse Parameter Descriptions
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The Rotation of Posterior Shoulder option activates the automatic resolution of shoulder dystocia
upon detection of proper rotation of the posterior shoulder. Upon detection, ” Posterior shoulder
rotation maneuver was performed ” and “ Shoulder dystocia condition resolved ” will be logged in the event
log. Once shoulder dystocia is resolved, the fetus is released from the birthing mechanism and can be
manually delivered. Proper rotation of the posterior shoulder requires that the posterior shoulder is
rotated at least 35
o
. Improper rotation of the posterior shoulder is prevented.
For example, if after restitution, the fetus is in LOT position, automatic resolution of shoulder dystocia
requires that the posterior shoulder is rotated clockwise at least 35
o
. In LOT position, rotating the
posterior shoulder counter-clockwise is prevented.
The Rotation of Anterior Shoulder option activates the automatic resolution of shoulder dystocia
upon detection of proper rotation of the anterior shoulder. Upon detection, ” Anterior shoulder rotation
maneuver was performed ” and “ Shoulder dystocia condition resolved ” will be logged in the event log.
Once shoulder dystocia is resolved, the fetus is released from the birthing mechanism and can be
manually delivered. Proper rotation of the anterior shoulder requires that the anterior shoulder is
rotated at least 35
o
. Improper rotation of the anterior shoulder is prevented.
For example, if after restitution, the fetus is in LOT position, automatic resolution of shoulder dystocia
requires that the anterior shoulder is rotated counter-clockwise at least 35
o
. In LOT position, rotating
the anterior shoulder clockwise is prevented.
The Zavanelli option activates the automatic resolution of shoulder dystocia upon detection of proper
Zavanelli performed. When in shoulder dystocia, the simulator allows the learner to manually push the
fetus backwards through the birth canal, in between contractions. A successful Zavanelli maneuver is
detected when the fetus is pushed up the descent mechanism a distance of approximately 6cm. Upon
detection, ”
Zavanelli maneuver was performed ” and “ Shoulder dystocia condition resolved ” will be logged
in the event log.
The fetus must be powered on and connected to the simulator’s wireless network and confirmed by the
presence of a fetal battery charge status in the fetal battery status icon. The connection is required in
order for the system to recognize the applied force to the head of the fetus as the learner attempts
Zavanelli.
Extraction of Posterior Arm
The Extraction of Posterior Arm maneuver to resolve shoulder dystocia is not detected automatically.
When a proper extraction has been performed, the Extraction of Posterior Arm parameter should be
manually activated. This brings up an “Extract now” confirmation button. Clicking the button resolves
shoulder dystocia and immediately releases the fetus that can now be manually extracted. Clicking
anywhere else on the screen cancels the action.
Arrested Labor
The Arrested Labor parameter should be set to Enable to activate the condition of arrested labor.
Enabling Arrested Labor leads to the interruption of fetal descent, once the fetus has reached the
trigger station. The message “
Now in arrested labor condition ” will be logged in the event log.
Default : Disabled