Dräger Infinity Vista, Инструкция по эксплуатации, Страница: 132 / 280

8-2 Infinity Vista VF6
8 ECG
AND
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EART
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ATE
Overview
The monitor can:
z
Display one or two ECG leads.
z Calculate the average heart rate per minute.
z Identify a number of arrhythmia events, including asystole, ventricular
fibrillation, bradycardia, and ventricular tachycardia (see the chapter
Arrhythmia ).
z Analyze ST segment deviations for the displayed ECG leads (option -- see the
chapter
ST-Segment Analysis ).
Electrodes applied to the patient’s chest pick up the electrical impulses initiated by the
heart. The monitor amplifies these electrical signals and displays them on the screen.
The monitor accepts 3, 5, and 6-lead ECG cable sets. With a 3-lead set you can
monitor the leads I, II, and III. With a 5-lead set you can monitor the leads I, II, III,
aVR, aVL, aVF and V (chest). With a 6-lead set you can monitor the leads I, II, III,
aVR, aVL, aVF, V (chest) and V+ (additional chest).
When you first turn on the monitor, it calculates heart rate within 15 seconds or 3
beats, whichever is longer, and displays the value in the HR parameter box.
Thereafter, the heart rate is updated after every detected beat. The heart symbol
j
pulsates with every detected QRS complex. When the HR alarm is turned off, a
crossed bell appears beside the HR value. When monitoring a paced patient, the letter
“P” is added to the heart symbol.
Patient Preparation
Selecting and Preparing the Electrodes
There is a wide selection of reusable and prepackaged, pre-gelled, and disposable
electrodes to choose from.
Always select the best electrode for your particular monitoring situation. Because of
their stability, the use of Ag/AgCl reusable or disposable electrodes is recommended.
If using reusable electrodes, place a ¼ to ½ inch (½ to 1 cm) of conductive gel in the
spacer before application and attach the electrodes to the skin with an adhesive ring.
NOTE: If voltage to the monitored ECG lead(s) is too high, the waveform goes blank
until the input voltage returns to a range that can be monitored.