Ice burn: protecting the flank during renal cryotherapy.
Title | Ice burn: protecting the flank during renal cryotherapy. |
Publication Type | Journal Article |
Year of Publication | 2010 |
Authors | Young, J. L., Sountoulides P., Kolla S. B., Pick D. L., Kaufmann O. B., Huynh V. B., Kaplan A. G., Ortiz C., Louie M. K., Andrade L. A., Osann K. E., McDougall E. M., & Clayman R. V. |
Journal | J Endourol |
Volume | 24 |
Issue | 8 |
Pagination | 1249-53 |
Date Published | 2010 Aug |
ISSN | 1557-900X |
Keywords | Animals, Body Temperature, Burns, Catheterization, Cryosurgery, Freezing, Ice, Kidney, Laparoscopy, Swine |
Abstract | INTRODUCTION AND OBJECTIVES: Cryoablation is a viable minimally invasive strategy for the treatment of small renal masses. One of the most common postoperative complaints is pain or paresthesia at the cryoprobe insertion site. The use of a 14-gauge angiocatheter to insulate the flank during renal cryotherapy was investigated.MATERIALS AND METHODS: Six Yorkshire swine underwent laparoscopy-guided percutaneous cryoablation of the upper and lower poles of both kidneys with a 1.47 mm (17 gauge) cryoneedle. Treatment consisted of a double 10-minute freeze separated by a 5-minute active thaw. Trials were randomized to placement of the cryoneedle directly through the flank or through a 14-gauge angiocatheter as an insulating sheath. Temperatures were recorded adjacent to the cryoneedle at two depths in the flank with a Multi-Point Thermal Sensor.RESULTS: Twelve trials were completed each with a bare and sheathed cryoneedle. The coldest temperature observed was -26 degrees C for the bare cryoneedle and -21 degrees C for the sheathed cryoneedle. At the outer sensor, there was a 4.1 degrees C increase in mean temperature for freeze 1, and 6.2 degrees C increase in mean temperature for freeze 2 with sheath use. At the inner sensor, there was a 3.0 degrees C increase in mean temperature for freeze 1, and 9.4 degrees C increase in mean temperature for freeze 2 with sheath use. There was a trend toward statistical significance of sheath insulation at the outer (p = 0.07) and inner (p = 0.08) temperature sensors.CONCLUSIONS: A 14-gauge angiocatheter may provide some insulation and thereby might help protect against "ice burn" during renal cryotherapy. |
DOI | 10.1089/end.2009.0434 |
Alternate Journal | J Endourol |
PubMed ID | 20092414 |