Abstract
Objectives
The aim of this study was to evaluate the feasibility of cryoablation of renal tumours without sedation.
Materials and methods
We prospectively evaluated 149 computed tomography-guided renal cryoablation procedures that were performed at our institution between 2009 and 2013. The patients received only 1 g of IV paracetamol prior to the procedure; intraprocedural, local anaesthesia was administered. We recorded the date and duration of the procedure, size and location of the tumour, number of cryoneedles used, need for dissection with saline or carbon dioxide and intraprocedural degree of pain, which was scored using an established visual analogue pain score (VAS) (0–10). Multivariate analysis was used to identify the associations between the recorded parameters and VAS.
Results
An interventional radiologist and a technician could perform all procedures without the help of anaesthesiologists and with adequate analgesia. The pain level ranged from 0 to 8 (mean, 2.0). It did not correlate with the tumour size or with the number of cryoneedles. It was significantly greater when the ice ball involved renal cavities (p = .0033) and when carbon dioxide was used for dissection (p < .0001). Conversely, the team experience was positively correlated with lower pain levels (p = .0381).
Conclusion
This study demonstrates that the cryoablation of renal tumours is feasible by interventional radiologists alone using a combination of IV paracetamol and local anaesthesia.
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Conflict of Interest
Eric de Kerviler is consultant for Galil Medical, Constance de Margerie-Mellon has no conflict of interest, Alexandre Coffin has no conflict of interest, Guillaume Legrand has no conflict of interest, Matthieu Resche-Rigon has no conflict of interest, Guillaume Ploussard has no conflict of interest, Paul Meria has no conflict of interest, Pierre Mongiat-Artus has no conflict of interest, François Desgrandchamps has no conflict of interest, Cédric de Bazelaire has no conflict of interest.
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Informed consent was obtained from all individual participants included in the study.
Statement of Human and Animal Rights
Ethical approval: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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de Kerviler, E., de Margerie-Mellon, C., Coffin, A. et al. The Feasibility of Percutaneous Renal Cryoablation Under Local Anaesthesia. Cardiovasc Intervent Radiol 38, 672–677 (2015). https://doi.org/10.1007/s00270-014-0995-x
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DOI: https://doi.org/10.1007/s00270-014-0995-x