Fluke-biomedical MPS450 User Manual download pdf (Page 38)

MPS450

Operators Manual

2-6

Table 2-3. Numeric Codes for Patient-Type Settings

Patient-Type Setting Numeric Code

ADULT 010

PEDS 011

Adjusting the ST Segment

On the ECG output, the ST segment is that portion of line between the end of the QRS

complex and the T wave. The T wave is caused by the return of the ventricular mass of

the heart to a state of electrical rest (repolarization). The deviation of the ST segment is

indicative of a variety of conditions, with the baseline being set by the P-R segment.

The MPS450 adjusts (elevates or depresses) the ST segment for adult normal-sinus waves

at or below 180 BPM. The nineteen preprogrammed settings (mV) include a range from

-0.8 mV to +0.8 mV (0.1 mV steps) as well as +0.05 and -0.05. The elevation/depression

amount specified is for Lead II, per millivolt of ECG amplitude, with other leads being

proportional.

Action in the Menu-Control Mode

1. Press the top-menu key labeled NSR.

2. Select > to display the LCD screen NORMAL SINUS RHYTHM ST.

3. To adjust the ST segment to the desired setting, select DOWN or UP.

4. The ST-segment setting identified on the LCD screen is active when displayed and

remains active until the setting is changed.

Alternatively, in the Numeric-Control Mode, press the number keys for an ST-segment

setting according to Table 2-4, and select RUN:

Table 2-4. Numeric Code for ST-Segment Settings

ST-Segment Setting Numeric code

+0.8 mV 222

+0.7 mV 223

+0.6 mV 224

+0.5 mV 225

+0.4 mV 226

+0.3 mV 227

+0.2 mV 228

+0.1 mV 229

+0.05 mV 219

0 mV 220

-0.05 mV 221

-0.1 mV 230

-0.2 mV 231

-0.3 mV 232

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 125 126

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Fluke-biomedical MPS450 User Manual Page 38