ACIST RXI - Cable Lengths and Pressure Input;Output

Color-coded Pop-up Messages and Problem Conditions
92 | ACIST RXi System User’s Guide 901700-001,01 2019-09 English
Glossary
Glossary Term Denition
Equalize Button After verifying that the aortic pressure displayed on the
RXi System matches the reading on the hemodynamic
monitor, pressing Equalize produces a Pd/Pa of 1.00.
Equalizing shifts the mean distal pressure so it equals
the mean aortic pressure, and additionally adjusts for
phase shift between the distal and aortic signals.
Export Button Press the Export button to transfer Case Summary
information for the case currently being viewed to a USB
memory device.
Facility Name Identies the hospital’s name or ID where the RXi
System is installed. Up to 20 characters can be used.
Fractional Flow
Reserve (FFR)
The measurement of pressure dierences across an
arterial stenosis at maximum hyperemia. It is calculated
as FFR = (Pd - Pv) / (Pa - Pv).
FFR FFR FFR The RXi Main screen displays the FFR for the last three
recordings in the current case.
FFR Review Screen Provides a snapshot of the FFR data, including Aortic
pressure (Pa), Distal pressure (Pd), Venous pressure (Pv)
and FFR. Included on this screen is the date and time of
the recording, along with the patient ID, if entered.
Graph Scale Maximum Pop-up window allows adjustment of the maximum
pressure value displayed on the waveform graph.
The allowable values are 100 mmHg, 150 mmHg, 200
mmHg, and 250 mmHg, with default being 200 mmHg.
To provide the most legible curve, the smallest value
suitable for the patient should be used.
Install Software Allows installation of software upgrades via a USB
memory device that has valid software installed on the
device.
Lab ID Identies the lab where the RXi System is installed. Up
to 20 characters can be used, which appear in the FFR
Patient Recording Case Summary. Also included on the
Lab ID screen are buttons to select whether the system
is Mobile (moved from room to room) or Stationary
(used in only one room).
Language Selecting Language provides the option of choosing
from all the supported languages.
Mean Aortic Pressure The average pressure within the aorta over a complete
cycle of one heartbeat.
Mean Pressure
Calculation
The number of heartbeats selected on the Mean
Pressure Calculation window is used in calculating the
mean pressure. The allowable values are 1, 2, 3, 4, 8, and
12, with the default value being 3 heartbeats.
Message Bar Area of the Main screen that displays instructions and
information.
Midaxillary Position The aortic transducer must be placed in the midaxillary
position, which follows an imaginary line through the
axilla parallel to the long axis of the body and midway
between its ventral and dorsal surfaces.