13 12-Lead ECG Preview Screen
138
Preview Screen
The 12-lead function’s Preview Screen allows you to see real-time 12-lead ECG data and verify signal
quality before acquiring the ECG. As shown in Figure 65, it displays patient information and
approximately 2.5 seconds of each of the 12 leads acquired. Waveforms are presented at a rate of
25mm/sec and the configured wave size. A dashed line is displayed if a lead cannot be derived. The
message (Lead-Wire) Lead Off is displayed if an electrode is not making adequate contact with the
patient.
The Preview Screen’s patient information includes ID, age, and sex. The Event ID is displayed until
you enter the patient’s ID. Age and sex are displayed once entered (see “Entering Patient Information”
on page 27).
Although waveforms for monitored parameters such as ECG, SpO
2
, Invasive Pressures and CO
2
are
not visible on the Preview Screen, related alarms, measurements and INOP messages remain active and
are reported in Parameter Blocks 1 and 2 and the general status area.
Preparation
Proper patient preparation and electrode placement are the most important elements in producing a
high quality 12-lead ECG. The patient should be supine and relaxed when an ECG is acquired. In
preparation for acquiring the ECG:
1 Connect the 10-lead cable to the HeartStart MRx, as described in “Connecting the ECG Cable”
on page 35.
2 Prepare the patient and apply electrodes, as described in “Preparing to Monitor ECG” on page 49.
3 Turn the Therapy Knob to Monitor.
4 Enter the patient’s ID, name, age and sex as described in “Entering Patient Information” on
page 27.
5 Confirm the patient’s pacing status is correct.