User's Manual

12
Indications and Contraindications
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Indications and Contraindications
Indications for Closed Loop Stimulation
Closed Loop Stimulation uses ventricular sense (Vs) and ventricular
pace (Vp) events in calculating the pacing rate. The indications for
Closed Loop Stimulation are summarized in the following:
— Patients with intermittent AV conduction disorders or intact AV
conduction. The algorithm is based on an AV hysteresis that can
be turned off for patients with high-degree AV blocks.
— Patients with a permanent AV block can be paced in the ventricle
with the required V
P
parameter set to “yes”.
— Patients with vasovagal syncope can be optimally supported with
the programmable “dynamic runaway protection” parameter.
— Patients who would benefit from a constant AV delay are better
treated when the “CLS dynamics” parameter is turned off.
The following information includes general indications and
contraindications for the use of cardiac pacemakers. Please refer to
the appropriate medical literature for detailed information. The
guidelines of the American College of Cardiology (ACC),
1
the American
Heart Association (AHA), and the German Society for Cardiology and
Cardiovascular Research
2
are particularly good sources of information.
1
Guidelines for Implantation of Cardiac Pacemakers and Antiarrhythmia Devices,
Gregoratos et al., ACC/AHA Task Force Report, Circulation 2002; 106: 2145-2151,
October 15, 2002
2
Richtlinien zur Herzschrittmachertherapie; Indikationen, Systemwahl, Nachkontrolle.
[Guidelines for Cardiac Pacemaker Therapy; Indications, System Selection, Follow-up
Care]. Reports by the Commission for Clinical Cardiology at the German Society for
Cardiology - Cardiovascular Research] (DGK), B. Lemke, W. Fischer, H. K. Schulten,
Steinkopff Verlag 1996