title: A randomized trial comparing monopolar electrodes using glycine 1.5% with two different types of bipolar electrodes (TCRis, Versapoint) using saline, in hysteroscopic surgery.
abstract: OBJECTIVE
  To compare three types of equipment during hysteroscopic resection.
  
  
  METHODS
  A randomized study.
  
  
  METHODS
  Women's clinic at Ullevaal University Hospital, Oslo, Norway.
  
  
  METHODS
  Two hundred premenopausal women with menorrhagia caused by dysfunctional bleedings, fibroids, or polyps.
  
  
  METHODS
  Hysteroscopic resection was performed either with monopolar electrodes using glycine 1.5% as irrigant or with two different types of bipolar electrodes (TCRis; Olympus, Hamburg, Germany and Versapoint; Gynecare, Menlo Park, CA) using saline as irrigant.
  
  
  METHODS
  Change in serum sodium as a result of irrigant consumption, operating time, and amount of tissue removed.
  
  
  RESULTS
  A statistically significant reduction in mean serum sodium from 138.7 mmol/L to 133.8 mmol/L was seen in the monopolar group, compared with the case of the saline groups with no reduction. The amount of resected tissue in the monopolar and TCRis group was approximately 1.00 g/min, compared with 0.65 g/min in the Versapoint group. Loss of fluid during the procedure was significantly higher in the two bipolar groups.
  
  
  CONCLUSIONS
  Bipolar electrodes appear to have a safer profile compared with monopolar electrodes because of the unchanged serum sodium. Irrigant consumption was significantly higher in the two bipolar groups, without any side effects during or after the procedure. Furthermore, the TCRis loop appears to be superior to the Versapoint loop, as regards operating time and amount of tissue removed.
authors: Department of Gynecology and Obstetrics, Ullevaal University Hospital Oslo, Oslo, Norway. anette.berg@uus.no
authors: Anette
authors: A
authors: Berg
authors: Leiv
authors: L
authors: Sandvik
authors: Anton
authors: A
authors: Langebrekke
authors: Olav
authors: O
authors: Istre
mesh_terms: D000328:Adult; D004566:Electrodes; D005260:Female; D005998:Glycine / Q000737:chemistry / Q000494:pharmacology*; D006801:Humans; D020702:Hysteroscopes; D015907:Hysteroscopy / Q000009:adverse effects / Q000379:methods*; D007889:Leiomyoma / Q000150:complications / Q000601:surgery; D008875:Middle Aged; D009994:Osmolar Concentration; D011183:Postoperative Complications / Q000453:epidemiology / Q000209:etiology; D012965:Sodium Chloride / Q000494:pharmacology*; D016896:Treatment Outcome; D014592:Uterine Hemorrhage / Q000209:etiology / Q000601:surgery*; D014594:Uterine Neoplasms / Q000150:complications / Q000601:surgery; D014595:Uterine Perforation / Q000453:epidemiology / Q000209:etiology
chemical_list: D012965:Sodium Chloride; D005998:Glycine