Pacemaker FAQ

From Computing and Software Wiki

This page contains answers to the Frequently Asked Questions about the Pacemaker.

Requirements

1. Section 2.5.2 – Implant Phase
   7. Testing the system sensing and pacing efficacy.
   • What kind of test is made?
   • Which of these parameters are evaluated?
     A: See #6 in the section above 2.5.2
2. Part 5.2 said URI is the min time between a ventricular event and the next ventricular pace. Then why is URI effective in modes without ventricular pacing nor sensing, such as AAT, AOO (Table 6, page 28)?
   A: “URI” should be “URL interval” in the question. For AAT, trigger paces must not be faster than URL. AOO is constant rate pacing at LRL. So long as LRL < URL (one of many implicit parameter constraints) AOO will pace slower than URL.
   The requirement could have been broadened to atrial-only modes. Alternatively, strict reading that URL does not apply to atrial-only modes is acceptable as well.
3. 2.5.3 - Predischarge Follow-up (Page 12)
   2. Reprogramming to final pre-discharge value
   • Is there any special values for parameters?
     A. No. This just means that the doctor can change parameters after implant, but before the patient leaves the hospital.
4. 3.6.1 - Permanent State (Page 17)
   The normal pacing parameters programmed shall be used in the permanent brady state.
   • Which are these normal pacing parameters?
     A. The ones that are currently programmed.
5. 3.6.2 - Temporary Bradycardia Pacing
   The temporary brady parameters programmed shall be used in the temporary brady state.
   • Which are these temporary brady parameters?
     A. An identical set of parameters to the permanent parameters, but changes in temporary parameters do not affect permanent parameters.
     

The temporary state shall be capable of being used to temporarily test various system parameters or provide patient diagnostic testing.

1. • Which parameters are tested?
     A. Any or all parameters that the physician wishes to try temporarily.
   • What is the "patient diagnostic testing".
     A. Testing impedance/amplitude/threshold.

Hardware Reference Platform