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- Title
A New Sock Electrode for Recording Epicardial Activation from the Human Heart: One Size Fits All.
- Authors
Worley, Seth J.; Ideker, Raymond E.; Mastrototaro, John; Smith, William M.; Vidaillet Jr., Humberto; Peng-Sheng Chen; Lowe, James E.
- Abstract
Simultaneous recording of epicardial activation from multiple sites during open surgery is essential for studying unstable ventricular arrhythmias. A previously described sock electrode array for this purpose requires custom-woven nylon sock material and expensive machined button electrodes. The limited compliance and elasticity of nylon requires that a new sock be individually fitted each heart. Despite careful fitting, 17-20% of electrodes do not make satisfactory epicardial contact dogs. Further, electrodes frequently dislodge from the sock and wires break at the button electrode solder joint. Recognizing these limitations, we formed a new sock from Xspan® tubular dressing material devised electrodes that attach securely to the sock. In six dogs. 90% ± 3% of electrodes made satisfactory contact using the same Xspan® sock. significantly (p < .01) more than with the nylon sock despite far labor. The same size X span® sock with 60 snap electrodes was used to record from 27 human hearts widely different dimensions. Satisfactory epicardial contact was obtained in 90% ± 14% of electrodes the 18 patients with Wolff-Parkinson-White syndrome (WPW) and 75% ± 15% of electrodes in the patients with coronary artery disease. In no case did an accessory pathway fail to conduct following placement. The hemodynamic effect of the Xspan® sock was evaluated in four dogs and was found to minimal. Both the Xspan® sock and the snap electrodes are easily made from inexpensive, readily available materials. The same Xspan® sock accommodates a wide range of heart sizes, and the electrodes supported by the Xspan® sock record significantly better and with less dislodgement and wire breakage than previous socks.
- Subjects
ARRHYTHMIA; ELECTROPHYSIOLOGY; ELECTROTHERAPEUTICS; WOLFF-Parkinson-White syndrome; CORONARY disease; HEMODYNAMICS; VENTRICULAR tachycardia
- Publication
Pacing & Clinical Electrophysiology, 1987, Vol 10, Issue 1, p21
- ISSN
0147-8389
- Publication type
Article
- DOI
10.1111/j.1540-8159.1987.tb05921.x