Boston Scientific MAESTRO 4000 Manual De Instrucciones página 19

Power Setting
• WARNING: To minimize the potential for thrombus formation, inadvertent damage to cardiac tissues,
and collateral damage to adjacent tissue not intended for ablation, begin by using a low power setting
and gradually increase the power output if necessary, especially in areas where low blood flow and
correspondingly low convective cooling may be present.
Temperature Setting
• WARNING: To minimize the potential for thrombus formation, inadvertent damage to cardiac tissues, and
collateral damage to adjacent tissue not intended for ablation, begin by using a low temperature setting
and gradually increase the power output if necessary, especially in areas where high blood flow and
correspondingly high convective cooling may be present.
• WARNING: The displayed temperature is not the maximum tissue temperature. The measured
temperature may be influenced by the degree of tissue contact and variations in blood flow. The
difference between the max tissue temperature and the displayed temperature increases when using
irrigated catheters, and the correlation with lesion formation is greatly reduced. The temperature
displayed with irrigated catheters is not intended to guide lesion formation. The temperature displayed
with irrigated catheters is intended to verify that the tip is being sufficiently irrigated. This behavior will
minimize the potential for thrombus formation and/or inadvertent damage to nearby tissue.
Impedance Setting
The impedance upper limit may be adjusted between 150 Ω to 300 Ω.
Time Setting
Set the timer for the maximum duration of RF Power delivery.
Selecting Average and Maximum Display
Press the "Maximum" and/or "Average" Buttons, if those values are to be displayed.
RF Power Delivery with Open-Irrigated bSC Catheters
Use of the RF Generator with BSC open-irrigated catheters requires proper set-up and preparation of the
MetriQ™ Pump and the MetriQ Irrigation Tubing Set. The MetriQ Pump Operator's Manual provides complete
instructions for set-up and operation of the MetriQ Pump and MetriQ Irrigation Tubing Set .
Starting RF Power Delivery:
• Press the RF Power Control button once, or hold down the Foot Switch pedal.
• The MetriQ Pump will switch from standby flow to ablation flow.
• Delivery of RF Power will start when the Pre-RF Delay is complete.
• The RF Power Control button will illuminate and remain lit until RF power delivery stops.
• RF Power will stop automatically when the setting for maximum duration of RF Power Delivery is
reached.
• The Pump will switch to standby flow when the Post-RF Delay is complete.
Stopping RF Power Delivery:
• To stop delivery of RF Power before reaching the setting for maximum duration, press the RF
Power Control Button, or release the Foot Switch pedal.
• The RF Power Control button will flash to indicate the RF Generator is in STANDBY state.
• The Pump will switch to standby flow when the Post-RF Delay is complete.
Maestro 4000™ Cardiac Ablation System Operator's Manual, Global 19
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