Collect data
Collect data
1. Click Start
Start
(SPARKvue) or Record
Record
(Capstone) to begin data
collection.
2. Have your partner rapidly pump air into the cuff until the
pressure reaches approximately 170 mmHg.
CAUTION:
CAUTION: Do not pump above 200 mmHg. If there is
discomfort, push and hold the push-button on the release valve
to deflate the cuff.
3. Remain still as possible during data collection. The cuff pressure
deflates by itself at a rate between 2 and 5 mmHg per second.
Note:
Note: If the pressure is not deflating between 2 and
5 mmHg per second, adjust the release rate by turning the
adjustment screw on the pressure release valve. Turn the
screwdriver counter-clockwise to decrease the rate and turn
clockwise to increase the rate.
4. Stop collecting data when the systolic and diastolic pressure
measurements appear in the digits displays (about 30-60 seconds
after starting data collection).
Note:
Note: If the pressure measurements do not appear, try the
following:
◦
Adjust the pressure release rate so that it is between 2 and
5 mmHg per second.
◦
Check the cuff placement on the arm (Figure
◦
Try inflating the cuff at a faster rate.
◦
Use a different cuff size (sold separately).
5. Release the remaining air in the cuff by pressing the push-button
release valve on the bulb.
Analyzing blood pr
Analyzing blood pressur
essuree
The Wireless Blood Pressure Sensor uses the oscillometric technique
to estimate blood pressure. When the oscillations of pressure in a
blood pressure cuff are recorded during gradual deflation, the point
of maximal oscillation corresponds to the mean intra-arterial
pressure. The oscillations begin at approximately systolic pressure
and continue below diastolic, so that systolic and diastolic pressure
can only be estimated indirectly according to an empirically derived
algorithm.
Systolic pressure is the pressure of the blood on the artery walls
when it leaves the ventricles at peak ventricular contraction, when the
heart is emptying its chambers of blood. It is the “top number” of the
blood pressure ratio. Normal systolic pressure for a male is
approximately 120 mmHg and for a female is approximately
110 mmHg.
Diastolic pressure is the pressure of the blood on the artery walls
when the ventricles relax and the heart's chambers fill with blood. It is
the “bottom number” of the blood pressure ratio. Normal diastolic
pressure for a male is approximately 80 mmHg and for females is
approximately 70 mmHg.
To find the systolic and diastolic blood pressure manually:
1. Zoom in on an area of the pressure measurement between 120
and 60 mmHg.
2. Identify when your data
begins to form small oscillations. This is
your systolic pressure.
3. Identify when your data
stops forming small oscillations. This is
your diastolic pressure.
Figure 2. Example data showing how to find systolic and diastolic
pressure manually.
Wireless Blood Pressure Sensor | 3
