Fluke-biomedical MPS450 User Manual download pdf (Page 43)

Cardiac Functions

Arrhythmia Functions 2

2-11

gje016.eps

3. Scroll to the LCD screen for the desired condition: ATRIAL FIB COARSE or

ATRIAL FIB FINE.

4. Select RUN. The selected simulation runs continuously (repeats) until another

arrhythmia selection is made.

Alternatively, in the Numeric-Control Mode, press the number keys for atrial-fibrillation

amplitude according to Table 2-9, and select RUN:

Table 2-9. Numeric Codes for Atrial-Fibrillation-Amplitude Settings

Atrial-Fibrillation-Amplitude Setting Numeric Code

ATRIAL FIB COARSE 012

ATRIAL FIB FINE 013

Atrial Flutter

A repeating sequence of large, irregular P waves at 300 BPM; an irregular ventricular

response.

Atrial flutter occurs when a single, ectopic, atrial pacemaker that is non-SA (usually low,

near the AV node) fires repeatedly and (usually) regularly, producing large, pointed P

waves at an approximate rate of 400 BPM (between 240 and 480 BPM). Not all of the

atrial impulses conduct through to the ventricles. On the ECG readout the waveform

generally exhibits a “saw tooth” appearance. This type of arrhythmia can reduce cardiac

output by as much as 25 %, due in many cases to the lack of an atrial “kick” and the

accompanying failure of the ventricles to fill completely with blood prior to ventricle

contraction.

The MPS450 simulates atrial flutter in the following (repeating) sequence: beats at a ratio

of 5:1 (five atrial beats for every one ventricular beat) for twelve seconds, followed by

beats at a ratio of 3:1 for six seconds, followed by beats at a 2:1 ratio for six seconds.

Action in the Menu-Control Mode

1. Press the top-menu key labeled ARRHY.

2. Select SV.

3. Scroll to the LCD screen ATRIAL FLUTTER.

4. Select RUN. The atrial-flutter simulation runs continuously (repeats) until another

arrhythmia selection is made.

Alternatively, in the Numeric-Control Mode, press the number keys 014, and select

RUN.

Sinus Arrhythmia

Beats that are normal, but triggered at an irregular rate, from 60 BPM to 100 BPM.

Sinus arrhythmia occurs when the SA node paces the heart irregularly. Typically, the

heartbeat increases with each intake of breath and decreases with each exhalation (a

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 125 126

No comments

Fluke-biomedical MPS450 User Manual Page 43