| 1. |
- Blomström-Lundqvist, Carina
(författare)
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The safety of reusing ablation catheters with temperature control and the need for a validation protocol and guidelines for reprocessing
- 1998
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Ingår i: Pacing and Clinical Electrophysiology. - : Wiley. - 0147-8389 .- 1540-8159. ; 21:12, s. 2563-2570
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Tidskriftsartikel (refereegranskat)abstract
- The objective of this study was to evaluate the safety of reusing ablation catheters with temperature control, which has not previously been reported. A review of previously conducted studies on the feasibility of reusing electrode catheters is also presented. From September 1994 to December 1997, 74 deflectable ablation catheters with temperature control (Cordis-Websters and Osypkas) were used during mean 7.6 +/- 8.0 ablation sessions. The catheter tests included visual inspection for surface defects using a magnification glass, impedance measurements, evaluation of the catheter deflection capability, and the integrity of the thermistor and thermocouple. The catheters were sterilized by Sterrad after each use. A total of 41 catheters were rejected after an average 9.1 +/- 8.8 uses (range 1-31). The main reasons for rejection were inaccurate temperature measurements by the thermistor or thermocouple (19%), breakage of or defect in the internal pulling wire (12%), loss or disturbance of electrogram (9%), and loss of deflection capability (8%). The reuse of the catheters has not resulted in any major catheter failures or any major adverse clinical complications. There were no local or systemic infections. It can be concluded that these types of ablation catheters will sustain repeated uses and resterilizations without untoward harm to the patient provided that a thorough validation protocol and guidelines for quality control and rejection of catheters are used. There seems to be no rational for setting a limit for the number of reuses, since most failures occurred at any time of reuse.
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| 2. |
- Emilsson, Kent, 1963-, et al.
(författare)
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An unusual cause of high threshold values at pacemaker implantation
- 1997
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Ingår i: Pacing and Clinical Electrophysiology. - : John Wiley & Sons. - 0147-8389 .- 1540-8159. ; 20:Part: 1, s. 366-7
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Tidskriftsartikel (refereegranskat)abstract
- An 81-year old man with third-degree AV block and weakness underwent an unsuccessful attempt to DDD pacemaker implant caused by hypothyroidism. Administration of thyroxin until he was euthyroid permitted implantation with normal stimulation thresholds.
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| 7. |
- LINDE, C, et al.
(författare)
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Pacing in dilated cardiomyopathy
- 1995
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Ingår i: Pacing and clinical electrophysiology : PACE. - : Wiley. - 0147-8389 .- 1540-8159. ; 18:7, s. 1341-1345
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 8. |
- Michaëlsson, Magnus, et al.
(författare)
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Natural history of congenital complete atrioventricular block
- 1997
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Ingår i: Pacing and Clinical Electrophysiology. - : Wiley. - 0147-8389 .- 1540-8159. ; 20:8 Pt 2, s. 2098-2101
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Tidskriftsartikel (refereegranskat)abstract
- An update of studies on the natural history of congenital complete AV block is presented. A risk for heart failure, syncope, and sudden death is present at any age including fetal life. Unfavorable prognostic signs in utero are low and decreasing ventricular rate (VR), hydrops, AV valve regurgitation, and low aortic flow velocity. Indications for pacing in infancy are congestive heart failure, ventricular rate < 55 beats/min in isolated block and < 65 beats/min with associated disease, prolonged OTc, syncope attacks, frequent ventricular ectopic beats, and alternating ventricular pacemakers. Indications for immediate pacing in childhood and adult life are syncope, presyncope, VR rates lower than median for age, periods of junctional exit block, prolongation of QTc and mitral regurgitation, and change of ventricular pacemaker. Pacing is recommended to all patients older than 15 years.
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