Resumo

FRANGINI S, Patricia et al. Experience in the use of a new endocardial stimulation electrode. Rev. méd. Chile [online]. 2006, vol.134, n.6, pp.749-753. ISSN 0034-9887.  http://dx.doi.org/10.4067/S0034-98872006000600011.

Background: Since February 2002, Flextend^® electrode catheters are used at the Cardiovascular Unit of the Catholic University Clinical Hospital. These transvenous catheters have an IS-1 connector, silicone coating, active fixation and retractile helix with dexamethasone acetate. Aim: To report early and one year results using Flextend^® catheters. Material and methods: Retrospective analysis of all patients that received an implant of a Flextend^® catheter in the Unit. Results: Forty one Flextend^® catheters were implanted in 24 patients, without acute displacement or clinical pericarditis. In 18 electrode catheters located in the right atrium the mean values for p wave, stimulation threshold and impedance at the moment of placement, were 2.9±1.4 mV, 0.8±0.4 V and 522±86 Ohms, respectively. The figures 24 hours after placement were 3.6±2.1 mV, 0.8±0.3 V and 612±69 Ohms, respectively. In 23 electrode catheters in the right ventricle, mean values at the moment of placement for R wave, stimulation threshold and impedance were 11.3±3.6 mV, 0.8±0.2 V and 756±108 Ohms, respectively. The figures 24 hours after placement were 3.6±2.1 mV, 0.8±0.3 V and 612±69 Ohms, respectively. In one patient, the stimulation threshold increased two months after placement and required a new intervention. Conclusions: Flextend^® catheters ca be placed successfully with a low rate of complications and stable function parameters on follow up

Palavras-chave : Pacemaker; artificial; Electrodos, immplanted.

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