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Effects of prednisone and ibuprofen on radio frequency volume tissue reduction in a rabbit model
Joseph K Han1, B Tucker Woodson
1Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee 53226, USA.
Abstract:
This study investigates whether acute anti-inflammatory medications (prednisone and ibuprofen) alter muscle volumetric reduction following radio frequency tissue ablation (RFTA). We used a rabbit model to measure changes in leg muscle volume using serial magnetic resonance imaging in 3 groups: RFTA without medication (group 1), RFTA with prednisone and ibuprofen (group 2), and no RFTA or medication (group 3). The mean volumetric changes for groups I and 2 differed on days 1 and 7 (+0.5 cm3 versus -0.4 cm3, p < .0001; and -0.03 cm3 versus -0.7 cm3, p < .05), but not on day 28 (-0.8 cm3 versus -1.0 cm3, not significant). Group 3 had no change in volume. The volumetric reduction varied. Impaired volumetric reduction (<50% mean change) occurred in 30% of extremities and correlated to lower tissue impedance (p < .04). Combined steroidal and nonsteroidal anti-inflammatory medications did decrease acute edema, but not the final volumetric reduction, following RFTA. Volumetric changes are variable and may be altered by tissue impedance.
Insights
Anti-inflammatory medications (prednisone and ibuprofen) reduced acute edema after radiofrequency tissue ablation (RFTA) in rabbits, but did not impact final muscle volume reduction. Muscle volume changes after RFTA can vary and may be linked to tissue impedance.
Area of Science:
- Biomedical Engineering
- Regenerative Medicine
- Musculoskeletal Research
Background:
- Radiofrequency tissue ablation (RFTA) is used for tissue removal.
- Understanding post-ablation tissue response is crucial for clinical applications.
- The role of anti-inflammatory medications in modulating RFTA outcomes requires investigation.
Purpose of the Study:
- To determine if prednisone and ibuprofen affect muscle volume reduction after RFTA.
- To analyze the temporal changes in muscle volume post-RFTA with and without anti-inflammatory intervention.
- To explore the relationship between tissue impedance and volumetric changes.
Main Methods:
- A rabbit model was used to assess leg muscle volume changes.
- Serial magnetic resonance imaging (MRI) was employed for volumetric measurements.
- Three groups were studied: RFTA alone, RFTA with combined anti-inflammatory drugs, and a control group.
Main Results:
- Groups receiving RFTA with anti-inflammatory medications showed reduced acute edema compared to RFTA alone.
- Significant differences in volumetric changes were observed on days 1 and 7, but not on day 28.
- Impaired volumetric reduction (<50% mean change) occurred in 30% of extremities and correlated with lower tissue impedance.
Conclusions:
- Combined steroidal and nonsteroidal anti-inflammatory medications reduce acute edema following RFTA.
- These medications do not alter the final muscle volumetric reduction after RFTA.
- Muscle volumetric changes post-RFTA are variable and potentially influenced by baseline tissue impedance.
