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Cardiac Mapping: Utility or Futility?

Gupta, Anoop Kumar and Maheshwari, Alok and Thakur, Ranjan and Lokhandwala, Yash Y. (2002) Cardiac Mapping: Utility or Futility? [Journal (Paginated)]

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Abstract

Cardiac mapping is a broad term that covers several modes of mapping such as body surface,1 endocardial,2 and epicardial3 mapping. The recording and analysis of extracellular electrograms, reported as early as 1915, forms the basis for cardiac mapping.4 More commonly, cardiac mapping is performed with catheters that are introduced percutaneously into the heart chambers and sequentially record the endocardial electrograms with the purpose of correlating local electrogram to cardiac anatomy. These electrophysiological catheters are navigated and localized with the use of fluoroscopy. Nevertheless, the use of fluoroscopy for these purposes may be problematic for a number of reasons, including: 1) the inability to accurately associate intracardiac electrograms with their precise location within the heart; 2) the endocardial surface is invisible using fluoroscopy and the target sites can only be approximated by their relationship with nearby structures such as ribs, blood vessels, and the position of other catheters; 3) due to the limitations of two-dimensional fluoroscopy, navigation is not exact, time consuming, and requires multiple views to estimate the three-dimensional location of the catheter; 4) inability to accurately return the catheter precisely to a previously mapped site; and 5) exposure of the patient and medical team to radiation.

Item Type:Journal (Paginated)
Keywords:Cardiac mapping
Subjects:JOURNALS > Indian Pacing and Electrophysiology Journal
ID Code:4324
Deposited By:Indian Pacing and Electrophysiology, Journal
Deposited On:02 May 2005
Last Modified:11 Mar 2011 08:56

References in Article

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