13
4
Figure 3
2. Remove the lung bags from the
upper compression plate. Connect
the right and left lung bags to the
adapters in the right and left bronchi
(Figure 3).
B. Installing the
Chest Compression Plate
1. Remove the compression springs
from packaging. Insert the springs
into the four plastic cylinders extend-
ing up from the lower compression
plate (Figure 4).
2. Before replacing the upper compres-
sion plate, make sure the lung bags
are connected to the tracheal tube
extending from the lower portion of
the neck of the Airway Management
Trainer head.
Figure 4
3. Position the upper compression plate
over the springs so that each of the
springs fits up into a cylinder on the
bottom of the upper compression
plate (Figure 5).
Figure 5
4. Place the lung bags through the
hole in the center of the upper com-
pression plate so they rest on top of
the plate (Figure 6).
Figure 6
5. Place the chest plate back over the
upper compression plate and lungs.
6. Reattach the chest skin by adjusting
the Velcro
®
edges. Again, be careful
not to damage the electronics
attached to the chest skin.
Cleaning & Maintenance:
To clean the Airway Management Trainer
head, you will need to remove the head
from the manikin. To do so, disconnect
the lungs from the bronchi. Then, rotate
the head so that it is facing backwards.
The large tab on the front of the neck
should be aligned with the keyway in the
torso. Tilt the head upward until it snaps
free. Disengage the smaller rear tabs
from the neck opening and pull the head
from the body (Figure 7). Reverse these
steps to reattach the head.
To proceed with the simulated blood
pressure measurement, first close the
valve on the sphygmomanometer bulb
tightly and begin pumping air into the
cuff until the gauge reads higher than the
preset systolic level chosen. Once this
point is reached, loosen the valve on the
bulb slightly to allow the gauge pressure
reading to decrease slowly. While moni-
toring the arm assembly with the stetho-
scope, note the point on the sphygmo-
manometer gauge when the first
Korotkoff sound is heard. This will be the
systolic blood pressure. Allow the pres-
sure in the cuff to continue to decrease
until the point at which the last pulse is
heard, noting the reading on the gauge.
This is the diastolic blood pressure.
Compare the results of reading the
systolic and diastolic blood pressures on
the gauge with the respective settings on
the simulator. If the readings were accu-
rate they should compare favorably with
the preset values. If the auscultatory gap
had been selected, then an absence of
an audible pulse would have b e e n
noticed during what would have been
the phase 2 Korotkoff sound. It is this
lack of an audible pulse that is consid-
ered an auscultatory gap. Note that in
reality the auscultatory gap can be pres-
ent in either the phase 1 or phase 2
Korotkoff sounds. If it is desired to
demonstrate the sounds heard while
measuring a subject’s blood pressure to
the trainee or group of trainees, an auxil-
iary blood pressure speaker amplifier sys-
tem is available (SB20146U). If the auxil-
iary speaker is used, the speaker is
plugged i n t o t h e E X T AU D I O A M P
jack located next to the ARM output
jack at the top of the unit. Adjust the vol-
ume control to increase the output of the
auxiliary speaker amplifier, and proceed
with the blood pressure measurement
sequence as it would normally be per-
formed except that the stethoscope need
not be used. Instead, listen to the sounds
as they emanate from the speaker amplifi-
er, noting the differences in the Korotkoff
phases being presented.
The NASCO
Life/form
®
Blood Pressure
Simulator is programmed to demonstrate
the 5 Korotkoff phases, including an aus-
cultatory gap, which can be heard during
auscultation of a subject, while measur-
ing the subject’s blood pressure. Each is
distinctly different and present for only a
portion of the measurement sequence.
Low Battery Indicator
When the battery supply diminishes to
a level near the point that the unit will no
longer function properly, the “low batt”
segment of the systolic pressure display
will activate when the pressure in the
sphygmomanometer cuff reaches above
20 mmHg. At this point, the batteries should
be replaced as soon as possible in order
to insure proper operation of the unit.
Refer to the section titled “Installing the
Batteries.”
Calibration Procedures
To calibrate the simulator, set the unit
up as described in the section titled
“Using The NASCO
Life/form
®
Blood
Pressure Simulator.” Apply the cuff to the
simulated arm. Set the control box sys-
tolic pressure to 150 mmHg and set the
diastolic pressure to 70 mmHg. Proceed
with a simulated blood pressure meas-
urement. Note the discrepancy in the
readings between the gauge and the
control box. Set the systolic “offset.”
Example:
If the blood pressure reading
was taken and the sounds started at 148
mmHg, then the offset is +2. If the
sounds started at 152 mmHg, the offset
is –2. For this example, assume that the
sounds started at 148 mmHg. Press and
hold the Calibration key until the systolic
correction window appears.
(See figure
12.)
Using the arrow up key set the cor-
rection to +2. Set the diastolic offset.
Example:
If the blood pressure reading
was taken and the sounds stopped at 72
mmHg, the offset is –2; or if the sounds
stopped at 68 mmHg, the offset is +2.
