[Effect of high frequency application on the tongue base. In vitro results of "radiofrequency application" on the porcine tongue base].
OBJECTIVE
A newly developed radio-frequency monopolar needle electrode was evaluated in vitro on porcine tongues.


METHODS
Porcine tongues with different tissue temperatures (20+/-1) degrees C and (32+/-2) degrees C were coagulated for 90 s. In a second step, 23 coagulations at 7 W were applied (34+/-2) degrees C.


RESULTS
The volume of the lesion correlated well with increasing temperature. In step two, the mean energy was 238 J and the mean volume of the lesion was 507 mm(3) (100+/-15)%. Prolonged energy application did not correlate with a larger volume of the lesion.


CONCLUSIONS
The new radio-frequency needle electrode can reduce tongue volume in a precise and controlled manner (SD+/-15%).
Hammerschmitt
N
N
Universitäts-Hals-Nasen-Ohren-Klinik Mannheim. nicolas.hammerschm@hno.ma.uni-heidelberg.de
Huber
K
K
Farin
G
G
Schäller
D
D
Voigtländer
M
M
Bergler
W
W
Hörmann
K
K
D000818:Animals; D004553:Electric Conductivity; D004564:Electrocoagulation / Q000295:instrumentation*; D004867:Equipment Design; D066298:In Vitro Techniques; D013552:Swine; D013696:Temperature; D014059:Tongue / Q000473:pathology / Q000601:surgery*