Biomedical subjects

P Adoue

Publications and source records attributed to P Adoue.

2 recordsLinked to original sources

PubMed1990

[An informatics program for the management of patients with pacemakers].

We are introducing a software package (Dbase III application) for the management of patients wearing cardiac pacemakers. It runs on any IBM compatible microcomputer with a minimum of 512 Kb RAM and a 10 Mb hard-disk. It works with 6 separate databases: 1) identification-indications; 2) implants; 3) explant-closure; 4) follow-up; 5) pacemakers, and 6) electrodes. The program runs completely by menus, tasks being started by one key stroke. The patient databases are structured following the European Pacemaker Patient Card, including its codes. Data introduction is facilitated by friendly screen formats. The pacemaker database contains 495 models and 304 electrodes of all brands. Automatic searches include: 1) hospital number (from last and/or first name); 2) complete pacing history; 3) listing of patients by stimulation mode, loss of follow-up or proximity of expected battery end of life; 4) pacemaker or electrode definition, and 5) pacemaker models contained in the database. The program has been applied by nurses for over 6 months in our service, proving its efficacy with an easier and better follow-up. The accuracy of the automatic searches has been confirmed manually.

Computers↗

PubMed1990

[Chronic stimulation thresholds using carbon and platinum electrodes].

Low-output pacemaker programming depends on the absolute value of the chronic pacing threshold. To assess the chronic threshold with three different types of leads we have used Siemens-Vario pacemakers which allow us to measure the chronic voltage threshold noninvasively. Forty six patients had a 12 mm2 platinum tip lead; 38, 12 mm2 carbon tip lead an 15, 9 mm2 carbon tip lead (Siemens, 414-415, 412 and 423). Platinum leads longevity was 45 +/- 15.9 months; 12 mm2 carbon tip leads, 28 +/- 6.5 and 9 mm2 carbon tip leads, 17 +/- 4.5. Forty two months postimplantation chronic threshold (measured at 0.5 msec pulse-width) was 1.6 +/- 0.6 V for platinum electrodes and 1 +/- 0.3 V for 12 mm2 carbon tip leads (p less than 0.001). Twenty four months postimplantation 9 mm2 carbon electrodes chronic threshold was 1 +/- 0.4 V, and 1.7 +/- 0.5 V for platinum electrodes (p less than 0.001). There were no differences between carbon tip leads with 9 and 12 mm2 pacing area. The new activated carbon tip leads have lower chronic pacing thresholds than platinum electrodes with the same pacing area. Pacemaker-patients with these new type of leads can benefit of reduced output programming and increase their pacemaker longevity.

Aged↗