Abstract
Severe bradyarrhythmias are a rare but potentially life threatening complication of percutaneous transluminal coronary angioplasty (PTCA). Previous work has outlined a technique for coronary pacing using the angioplasty guidewire. To examine the effectiveness of this technique during severe ischemia, seven swine underwent placement of an unmodified 0.014 inch angioplasty guidewire and 3.0 mm balloon catheter in the left anterior descending (LAD) artery. Baseline pacing thresholds were obtained. Pacing was begun at twice diastolic threshold and ischemia was produced by balloon inflation. Repeat capture thresholds were obtained after 1 and 8 minutes of ischemia. Transcoronary pacing was successfully performed in all seven animals and was continued for a mean of 13.8 ± 1.5 minutes. The baseline capture threshold was 4.0 ± 0.5 mA. The mean capture threshold was 3.3 ± 0.3 mA and 4.5 ± 0.9 mA at 1 and 8 minutes of ischemia, respectively. We conclude that transcoronary pacing using the angioplasty guidewire can be successfully performed during myocardial ischemia and may serve as a reliable backup system during interventional procedures complicated by bradyarrhythmias.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 162-165 |
| Number of pages | 4 |
| Journal | Catheterization and Cardiovascular Diagnosis |
| Volume | 30 |
| Issue number | 2 |
| State | Published - 1993 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
Cite this
Transcoronary cardiac pacing during myocardial ischemia. / Laird, J. R.; Hull, R.; Stajduhar, K. C.; Weston, L. T.; Kufs, W.; Wortham, D. C.
In: Catheterization and Cardiovascular Diagnosis, Vol. 30, No. 2, 1993, p. 162-165.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Transcoronary cardiac pacing during myocardial ischemia
AU - Laird, J. R.
AU - Hull, R.
AU - Stajduhar, K. C.
AU - Weston, L. T.
AU - Kufs, W.
AU - Wortham, D. C.
PY - 1993
Y1 - 1993
N2 - Severe bradyarrhythmias are a rare but potentially life threatening complication of percutaneous transluminal coronary angioplasty (PTCA). Previous work has outlined a technique for coronary pacing using the angioplasty guidewire. To examine the effectiveness of this technique during severe ischemia, seven swine underwent placement of an unmodified 0.014 inch angioplasty guidewire and 3.0 mm balloon catheter in the left anterior descending (LAD) artery. Baseline pacing thresholds were obtained. Pacing was begun at twice diastolic threshold and ischemia was produced by balloon inflation. Repeat capture thresholds were obtained after 1 and 8 minutes of ischemia. Transcoronary pacing was successfully performed in all seven animals and was continued for a mean of 13.8 ± 1.5 minutes. The baseline capture threshold was 4.0 ± 0.5 mA. The mean capture threshold was 3.3 ± 0.3 mA and 4.5 ± 0.9 mA at 1 and 8 minutes of ischemia, respectively. We conclude that transcoronary pacing using the angioplasty guidewire can be successfully performed during myocardial ischemia and may serve as a reliable backup system during interventional procedures complicated by bradyarrhythmias.
AB - Severe bradyarrhythmias are a rare but potentially life threatening complication of percutaneous transluminal coronary angioplasty (PTCA). Previous work has outlined a technique for coronary pacing using the angioplasty guidewire. To examine the effectiveness of this technique during severe ischemia, seven swine underwent placement of an unmodified 0.014 inch angioplasty guidewire and 3.0 mm balloon catheter in the left anterior descending (LAD) artery. Baseline pacing thresholds were obtained. Pacing was begun at twice diastolic threshold and ischemia was produced by balloon inflation. Repeat capture thresholds were obtained after 1 and 8 minutes of ischemia. Transcoronary pacing was successfully performed in all seven animals and was continued for a mean of 13.8 ± 1.5 minutes. The baseline capture threshold was 4.0 ± 0.5 mA. The mean capture threshold was 3.3 ± 0.3 mA and 4.5 ± 0.9 mA at 1 and 8 minutes of ischemia, respectively. We conclude that transcoronary pacing using the angioplasty guidewire can be successfully performed during myocardial ischemia and may serve as a reliable backup system during interventional procedures complicated by bradyarrhythmias.
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M3 - Article
C2 - 8221872
AN - SCOPUS:0027383709
VL - 30
SP - 162
EP - 165
JO - Catheterization and Cardiovascular Interventions
JF - Catheterization and Cardiovascular Interventions
SN - 1522-1946
IS - 2
ER -