Transcoronary pacing: are the modern wires effective?
OBJECTIVE
Coronary guide wires can be used for pacing the left ventricle during coronary angioplasty, however the experience with modern coronary guide wires as pacing wires is limited. The aim of this study was to determine the safety and efficacy of currently used coronary guide wires for transcoronary pacing.


RESULTS
Transcoronary pacing was tested in 25 patients who were scheduled to undergo elective coronary angioplasty. Four different coronary guide wires were tested using an adaptive alligator clip connecting the guide wire to the pulse generator. Resistance of various guide wires was also measured ex vivo at 150, 175 and 190 cms from the tip respectively. BMW and Galeo wires were used in 12 and 11 patients respectively while Couger and Magic wire were used in one patient each. Pacing was successful in all patients with no pacing related complication. Most patients had unifocal ventricular ectopics. Mean threshold varied between 4 mA to 5.54 mA. Resistance varied from 12 ohms to 31 ohms depending upon the wire and distance from the tip.


CONCLUSIONS
Transcoronary pacing using modern coronary guide wires appears to be dependable, well tolerated and safe temporary measure for significant bradyarrhythmias.
Parakh
Neeraj
N
Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India.
Asotra
Sanjeev
S
Singh
Sandeep
S
Ramakrishnan
S
S
Karthikeyan
Ganeshan
G
Seth
Sandeep
S
Bhargava
Balram
B
D001919:Bradycardia / Q000628:therapy*; D002304:Cardiac Pacing, Artificial / Q000009:adverse effects / Q000379:methods* / Q000592:standards; D004566:Electrodes / Q000592:standards; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged