EPS320 Quick Reference ver 3.19

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The MicroPace Screen & Keyboard

Title Bar will give you Current Set up, Version and Page

STIMULUS Menu allows setting of

stimulus pulse and train parameters

PACE STATUS

displays sense site

and result of pacing

Protocol Menu, set Stim

train Protocol, selectable

with Hot Keys T,N,S etc.

Pace Site Menu, select

Stim Channel selectable

with Hot Keys A,V etc.

More

Hotkeys

Menu

displays

menu of

extra Hot

Keys

Stimulus

Symbol

Display

Resulting

sensed

ECG

Display

Pacing

Intervals

Pause,

Length of

time before

pacing

begins

between

stims

Summary of Activity

Status of SGU (Under PC Control)

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STIMULUS MENU

• CURRENT Hotkey C, Sets Current

• Applicable keys: Numerals, +/-, Ctrl +/-, Ctrl-Ins, Ctrl-Del, Alt +/• Values: 0.1, 0.2, 0.3… 4.8, 5,6,7… 10,15…25 mA.

• Ctrl-Ins forces current to 20 mA.

• Ctrl-Del Restores current from 20 ma to previous values

• DURATION Hotkey U, Sets duration on Stimulus pulse in ms.

• Applicable keys: Numerals, +/• Values: 0.5, 1, 2, 3…10ms

• TRAIN Hotkey I, Sets # of Stim or # of sensed beats

• Applicable keys: Numerals, +/-, Del

• Del key sets INF = Infinite train or continuous pacing

• DECREMENT Hotkey D

• Applicable keys: Numerals, +/-, Ins, Del, Alt-L, Alt-U

• Del turns of decrementation

• Ins turns on decrementation, Ins with Tbl will bring up the table

• SYNC TO Hotkey Y

• Applicable keys: Y toggles between P/R and Off

• Off pacing commences asynchronously

• P/R pacing start after next sensed P/QRS

• ECTO pacing starts after next sensed premature P/QRS

• PACE MODE No Hotkey

• User must highlight parameter with the ‘Up Arrow’ and adjust using the +/- key

• Asyn pacing correspond to AOO and VOO pacing

• Inhb pacing correspond to AAI and VII pacing

PACE STATUS

• SENSE SITE: Active ECG Sense site/source, yellow subscript indicates the

ECG Gain, adjustable in QRS Detect Menu (Alt-Q).

• PQRS Sense / RR-average: Beat to Beat PQRS Sense interval and Average

PQRS Sense interval are displayed in msec.

• Heart Rate: in bpm.

• Time Paced: Timed paced in seconds.

• Impedance: Pacing circuit impedance is measured with each pulse to aid

the user in determining the integrity of the pacing circuit.

• Pulses Snt: Number of stimulus sent.

• During Pacing , the blue ECG display bar

will display vertical Stim markers(short bars

for S1, longer bars for S2-S7 and Channel 1

above Channel 2). The sensed ECG trace

and QRS markers are displayed in the lower

half.

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PROTOCOLS

• THRESHOLD: Hotkey T. Helps determine the

pacing threshold by continuously decreasing or

increasing the pacing current amplitude.

• The user needs to stop pacing when capture fails,

and accept or modify default current.

• NODAL_ERP: Hotkey N. Provide up to 3 autodecremented extra-stimuli for AV Node refractory

measurements. S2-S4 may be auto-decremented

by 50 msec above a value set by Config Var-36 and

by the Decrement Auto parameter below that.

• SNRT: Hotkey S. Displays an elapsed-seconds

alarm timer and automatically decrements S1 after

stopping pacing according to a SNRT. Table

accessed by pressing(Ins) with the screen focus on

the AUTO_DECREMENT OR S1 parameters while in

the SNRT protocol. Note SNRT value calculation

may not function correctly with catheter-tip

sensing; use external EcG sensing to obtain SNRT

calculation by the EPS320 Stimulator

• PACE: Hotkey P. Select the Pace protocol to

pace at a fixed interval set by S1 into selected

pacing site.

• BURST_PACE: Hotkey B. Regular pacing at S1

interval for a number of pulses defined in Train

Variable.

• Intra-burst decremental S1 pacing may be set by

setting Decrement parameter to a desired

decrement value. S1 will be decremented by this

amount every 400ms, to the value set in Config

Var-2.

• See Config Var-18 to set up Rate Adaptive.

• WENCKEBACH:

decrements S1.

Hotkey

W.

Continuously

• Decrementation may be paused by continuous

press of the (Spacebar) or optionally terminated by

manual adjustment of S1.

• See more options in the help menu for this

protocol.

• Multi_SX: Hotkey Z. Provides up to 6 autodecremented

extra-stimuli

primarily

for

programmed ventricular stimulation.

• Defibrillator warning can be turned off by Config

Var-38 to 0.

• Manual adjustment of last Sx suspends next

auto-decrementation and BSP key undoes last

auto-decrement.

• Double tap on Sx will take the Sx back up 10

msec and then return to the last Sx.

• RSYNCED_SX: Hotkey R. Produces a train of

up to 3 extra-stimuli coupled to a train of sensed

complexes.

• DELAYED_AV:

Hotkey E.

Provides AV

sequential pacing where S1 is the basic pacing

interval and the S2 interval sets the AV delay.

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PROTOCOLS continued

• ATP-AICD: Hotkey L. ATP may be delivered at a

preset % of the sensed VT cycle length set by S2

or at a fixed starting cycle length in ms set by S1.

• S1 and %(S2) can be adjusted by the user prior

to pacing.

• Train length set by I. Auto decrement set by D.

• A minimum S1 specific to this algorithm and

intra-train S1 decrementation may be set by Config

Var-4 and Config Var-19(Hotkey K).

• OD_BURST: Hotkey O. Regular pacing at S1

interval for a number of pulses defined in Train

Variable.

• Intra-burst decremental S1 pacing may be set by

setting Decrement parameter to a desired

decrement value. S1 will be decremented by this

amount every 400ms, to the value set in Config

Var-2.

Press ‘G’ to return to previous protocols

and parameters.

• See Config Var-18 to set up Rate Adaptive.

• X-RS2: Hotkey X. Produces a train of up to 3

extra-stimuli coupled to a train of sensed

complexes.

PACE SITE

• ATRIUM Ch1: Hotkey A. Ch1 output. For optimum stimulator automation,

this channel is typically used to stimulate the HRA, or the more proximal pacing

site in the conduction tree.

• VENTRIC Ch2: Hotkey V. Ch2 output. For optimum stimulator automation,

this channel is typically used to stimulate the Ventricle, or the more distal

pacing site in the conduction tree.

• STIM3 Ch3: Hotkey ‘. General purpose channel. It shares the current

generating circuit with Ch1, so EPS320 can’t stimulate both simultaneously.

• STIM4 Ch4: Hotkey /. General purpose channel. It shares the current

generating circuit with Ch2, so EPS320 can’t stimulate both simultaneously.

• JOINED 1+2: Hotkey J. Simultaneous Ch1 and Ch2 stimulation.

• In protocols without extra-stimuli, stimulation is simultaneous only

into Ch1 and Ch2.

• In protocols with extra-stimuli, a Menu allows independent

connections of S1 to S7 pulses into either one or both channels.

• The default menu setup is for S1 to pace both Atrium and Ventricle

and extra-stimuli to pace only ventricle.

• JOINED 3+4: Hotkey ]. Simultaneous Ch3 and Ch4 stimulation.

SENSE SITE

• OFF: Hotkey ALT F. Turns of sense site.

• ATR-Ch1/3 tip: Hotkey ALT A. Senses from the Atr stimulus channel pacing electrodes,

which in Four channel pacing may be connected to either output channels CH1 or Ch3.

• Note that you cannot Pace Ch3 and sense from Ch1 or visa versa.

• VEN-Ch2/4 tip: Hotkey ALT V. Senses from the Ventr stimulus channel pacing

electrodes, which in Four channel pacing may be connected to either output channels CH2

or Ch4.

• Note that you cannot Pace Ch4 and sense from Ch2 or visa versa.

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SENSE SITE continued

• EXT_ECG-1(A): Hotkey ALT 1. Senses from ‘ECG-1 Input’ at the rear of the SGU.

• This should be connected to a HRA IECG (RTO) channel for optimal EPS320 performance.

• EXT_ECG-2(V): Hotkey ALT 2. Senses from ‘ECG-2 Input’ at the rear of the SGU.

• This should be connected to a RVA IECG (RTO) channel for optimal EPS320 performance.

• AUTO_EXT: Hotkey ALT X. Senses from Ext_ECG-1(A) when pacing Atrium-Ch1 and from

Ext_ECG-2(V) when pacing Ventr-Ch2.

• Sense site remains Ext_ECG-1(A) when pacing Ch3 or Ch4 or Joined Ch 1+2 or 3+4.

• AUTO_TIP: Hotkey ALT I. Automatically senses from the paced catheter tip.

• Sense site is left unaltered when pacing Joined Ch 1+2 or 3+4.

QRS DETECT MENU

• QRS Detect Menu: Hotkey ALT Q. Graphically displays the sensed ECG,

and the process of QRS detection>

• User can interactively adjust QRS-detecting parameters

• Red line is ECG, Green line is QRS threshold, White line is baseline.

• To change parameters, use hotkey or place cursor over parameter and press

‘+’ or ‘-’ keys to adjust.

• While in QRS Detect Menu enter H for help and description of parameters.

HOTKEYS

SOFTWARE CONFIGURATION

• CONFIG Menu: Hotkey K. Software configuration including various safety limits and options may be changed by the Config

utility. Password ‘service’.

• To modify values, place the cursor over the variable and enter the new value.

• Obtain help on any variable by pressing Hotkey H, when the cursor is over the variable.

• CAUTION: Changing configurations will affect all users.

• Programming of default Protocol Parameters: Hotkey ALT S. Default

protocol parameters are loaded from a user definable defaults setup. To

save new defaults for any protocol, set up parameters in the protocol as

desired and press ‘ALT S’ and [enter].

• Default values for other parameters such as SyncToQRS, Train, Decrement

and so on may be programmed similarly.

• Storing multiple Protocol Defaults: Hotkey ALT S. You may store up to

5 different sets of Protocol Parameter defaults.

• Store parameters as above except after pressing ‘ALT S’, enter a memory

number from 1 to 5. Highlight number you want and press insert to rename

Setup.

• Retrieve a protocol by the ‘ALT-R’ hotkey, followed by the number of the

memory. The currently loaded Parameter setup is displayed in the top left

hand part of the screen.

• The setup memory loaded is ‘1’ by default. This default may be altered by

Config Var-39 to any value between 1 and 5.

• Restoring factory Presets: Restore Config variables to factory defaults

by selecting Config Var-40. This resets all Config variables to factory

presets.

• Restore Protocol parameters to factory presets by recalling memory ‘0’ by

pressing ‘ALT-R’ and entering ‘0’ and then [enter].

WARRANTY SERVICE AND REPAIR

Equipment Hotline:

800-872-3527

• Please consult appropriate product labels and inserts for indications,

contraindications, hazards, warnings, cautions, and directions for use.