Document Detail

Optimal ECG monitoring during percutaneous transluminal coronary angioplasty of the left anterior descending artery.
MedLine Citation:
PMID:  2957059     Owner:  NLM     Status:  MEDLINE    
During percutaneous transluminal coronary angioplasty (PTCA) frontal ECG leads are routinely monitored. The detection of ST segment deviation during the procedure is important for decisions regarding guiding catheter seating and the timing of balloon inflation and deflation. ST segment deviation appears on intracoronary electrograms in the absence of changes on the surface ECG in many patients, while the reverse is true in some individuals. When a precordial lead is employed, V5 or V6 is most commonly selected. The surface ECG leads most sensitive for monitoring ischemia during left anterior descending angioplasty are not known. In nine lead surface ECGs recorded during balloon inflation, a small degree of ST segment elevation occurred in leads I, aVL, and V5. Lead V2 demonstrated an increase in ST displacement from 0.0 +/- 0.03 mV to 0.29 +/- 0.25 mV during coronary occlusion (p less than 0.01). We conclude that if V5 or V6 is used as a single precordial lead, surface ECG alterations are easily overlooked. During left anterior descending occlusion the most sensitive surface lead is V2. Optimal ECG monitoring during PTCA in some cases should involve surface lead V2 or the intracoronary lead.
T Feldman; R W Childers; K G Chua
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Catheterization and cardiovascular diagnosis     Volume:  13     ISSN:  0098-6569     ISO Abbreviation:  Cathet Cardiovasc Diagn     Publication Date:    1987 Jul-Aug
Date Detail:
Created Date:  1987-10-08     Completed Date:  1987-10-08     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7508512     Medline TA:  Cathet Cardiovasc Diagn     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  271-4     Citation Subset:  IM    
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MeSH Terms
Angioplasty, Balloon / methods*
Coronary Disease / physiopathology,  therapy*
Electrocardiography / instrumentation*
Middle Aged
Monitoring, Physiologic / instrumentation

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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