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387158--G_GA_Lumax540_mul.book Page 5 Friday, February 1, 2013 5:38 PM
• For resynchronization of the ventricles, 3-chamber devices have functions for
multisite ventricular pacing with possible VV delays in either direction.
• To ensure that no additional surgery is necessary in case of a left-sided increase of
pacing threshold or undesired phrenic nerve stimulation by the CS lead, different
pacing polarites can be set for the CS lead with a triple-chamber device.
• Setting an upper pacing rate for the atrium prevents unspecific atrial pacing, thus
improving the termination of pacemaker-mediated tachycardia.
• Automatic threshold monitoring (ATM) for the left and right ventricle
Diagnostic functions
The device can record several types of arrhythmia episodes and store them in the
Holter memory:
• VT/VF therapy episodes
• SVT episodes (requirement SMART)
• VT monitoring zones
• AT/AF monitoring zones
The device stores diagnostic data about arrhythmia episodes:
• Detection counter and therapy counter
• Temporal characteristics of the episode
• Details on the last ATP and shock deliveries
• Shock data
• Therapy history
• Triple-channel IEGMs including marker channels, up to 30 min
Comprehensive memory functions such as histograms, Holter, mode switching long-
and short-term trends and the activity reports facilitate the evaluation of both patient
and device status.
The follow-up assistant functions have been largely automated.
The shock impedance is measured in an automatic procedure involving below-thresh-
old electrical pulses. This process is painless for the patient. The impedance values are
automatically measured 4 times a day. They are averaged and provided in a trend in the
device and via Home Monitoring.
Painless measurement of shock impedance can also be carried out manually with the
programmer.
• Lumax 540 VR-T DX is new (DX stands for diagnostics): Only one lead is required for
improved detection of AT and AF even with a single-chamber device. This enables
sensing in the atrium and ventricle as well as AV-sequential pacing. The SMART
algorithm helps distinguish more clearly between SVT and VT. The IEGM is
recorded in both chambers.
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All manuals and user guides at all-guides.com
Indications
Lumax ICDs can treat life-threatening ventricular arrythmias with antitachycardia
stimulation and defibrillation.
Single- and dual-chamber ICD
Lumax single and dual chamber ICDs are indicated for patients with the following risk:
• Sudden cardiac death caused by ventricular arrhythmias
Triple-chamber ICD
Lumax triple-chamber ICDs are indicated for patients with the following threats:
• Sudden cardiac death caused by ventricular arrhythmias
• Congestive heart failure with ventricular asynchrony
Lumax ICDs are also indicated for primary prophylaxis in congestive heart failure
patients.
Contraindications
Known contraindications:
• Tachyarrhythmia caused by temporary or reversible irritation e.g. poisoning,
• Such frequent VT or VF that the therapies would cause an unacceptably rapid
• VT with few or without clinically relevant symptoms
• VT or VF treatable by surgery
• Concomitant diseases that would substantially limit a positive prognosis
• Accelerated idioventricular rhythm
Shipping and Storage
Information on the package
The storage package for the device comprises a folded cardboard box with a quality
control seal and a label.
• Device name with serial number and PID number
• Technical details
• Details on sterility and use by date
• Ambient conditions during shipping and storage
5
Prior to Implantation
electrolyte imbalance, hypoxia, sepsis or acute myocardial infarction
depletion of the device batteries
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