| Continuous vectorcardiographic monitoring of ischemia during coronary angioplasty in patients with bundle-branch block. | |
| | |
MedLine Citation:
|
PMID: 10562918 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
BACKGROUND: Patients with the combination of bundle-branch block and ischemic heart disease have a poor outcome. There is no established criterion for detection of transient ischemia when bundle-branch block is present. OBJECTIVE: To elucidate vectorcardiographic changes during coronary angioplasty of patients with bundle-branch block. DESIGN AND METHODS: The QRS complex and ST-segment changes of 29 patients with bundle-branch block were studied during elective coronary angioplasty using continuous vectorcardiography. Data for the patients with bundle-branch block were compared with data for narrow-QRS-complex controls, matched for the vessel dilated, sex, and age. RESULTS: Patients with bundle-branch block were found to have more pronounced changes in the QRS-vector difference as a response to coronary occlusion than did controls. ST-vector magnitude responded in a similar way during coronary occlusion of patients with and without bundle-branch block but from different baselines. ST change-vector magnitude was found to be the most sensitive parameter for detection of ischemia in patients with bundle-branch block as well as for controls. CONCLUSION: Monitoring of transient ischemia during coronary angioplasty for patients with bundle-branch block is feasible using continuous vectorcardiography. A change in ST vector magnitude > 100 microV is suggested to indicate significant ischemia in the presence of bundle-branch block. |
| | |
Authors:
|
P Eriksson; P Albertsson; L Ekstr?m; M Dellborg |
Related Documents
:
|
6846118 - Bundle branch block in acute myocardial infarction. 15216208 - Nonsurgically-acquired complete atrioventricular block in endocardial cushion defect. 20394028 - Left bundle branch block (lbbb) masks changes due to hyperkalemia: a myth. 7942438 - Side-branch occlusion with directional coronary atherectomy: incidence and risk factors. 20589198 - The correlation between left ventricular failure and right ventricular systolic dysfunc... 17873488 - Effects of bariatric surgery on early myocardial alterations in adult severely obese su... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Coronary artery disease Volume: 10 ISSN: 0954-6928 ISO Abbreviation: Coron. Artery Dis. Publication Date: 1999 Oct |
Date Detail:
|
Created Date: 1999-12-02 Completed Date: 1999-12-02 Revised Date: 2010-03-01 |
Medline Journal Info:
|
Nlm Unique ID: 9011445 Medline TA: Coron Artery Dis Country: ENGLAND |
Other Details:
|
Languages: eng Pagination: 501-7 Citation Subset: IM |
Affiliation:
|
Clinical Experimental Research Laboratory, Sahlgrenska University Hospital, Ostra, Sweden. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Aged Angioplasty, Transluminal, Percutaneous Coronary / methods* Bundle-Branch Block / physiopathology* Female Humans Lown-Ganong-Levine Syndrome / physiopathology Male Middle Aged Monitoring, Intraoperative / methods* Myocardial Ischemia / physiopathology* Sensitivity and Specificity Tachycardia, Sinus / physiopathology Vectorcardiography / methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Intravascular ultrasound classification of atherosclerotic lesions according to American Heart Assoc...
Next Document: Outcomes of patients hospitalized after out-of-hospital cardiac arrest in relation to sex.