Aggravation of Pre-Existing Atrioventricular Block, Wenckebach Type, Provoked by Application of X-Ray Contrast Medium
- Medizinische Universitaet Graz, Division of Angiology, Department of Internal Medicine (Austria)
- LKH Deutschlandsberg, Department of Internal Medicine (Austria)
Background. Significant bradycardia followed by cardiac arrest related to single bolus administration of X-ray contrast medium into a peripheral artery has not, to our knowledge, been described in the literature. Methods and Results. While performing a percutaneous transluminal angioplasty of the left superficial femoral artery in a 68-year old patient with a pre-existing atrioventricular (AV) block, Wenckebach type, he developed an AV block III after a single bolus injection of intra-arterial X-ray contrast medium. Conclusion. We believe that application of contrast medium causes a transitory ischemia in the obstructed vessel and therefore elevation of endogenous adenosine. In the case of a previously damaged AV node this elevation of endogenous adenosine may be responsible for the development of a short period of third-degree AV block.
- OSTI ID:
- 21091113
- Journal Information:
- Cardiovascular and Interventional Radiology, Vol. 29, Issue 6; Other Information: DOI: 10.1007/s00270-005-0133-x; Copyright (c) 2006 Springer Science+Business Media, Inc.; www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 0174-1551
- Country of Publication:
- United States
- Language:
- English
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