title: [Effect of high frequency application on the tongue base. In vitro results of "radiofrequency application" on the porcine tongue base].
abstract: 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%).
authors.affiliation: Universitäts-Hals-Nasen-Ohren-Klinik Mannheim. nicolas.hammerschm@hno.ma.uni-heidelberg.de
authors.forename: N
authors.initials: N
authors.lastname: Hammerschmitt
authors.forename: K
authors.initials: K
authors.lastname: Huber
authors.forename: G
authors.initials: G
authors.lastname: Farin
authors.forename: D
authors.initials: D
authors.lastname: Schäller
authors.forename: M
authors.initials: M
authors.lastname: Voigtländer
authors.forename: W
authors.initials: W
authors.lastname: Bergler
authors.forename: K
authors.initials: K
authors.lastname: Hörmann
mesh_terms: 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*