Objective- To evaluate the clinical safety and superiority of monopolar and bipolar electrocauter in laparoscopic ovariohysterectomy in dogs. Design-Elective experimental study Animals- Twenty four mixed breed healthy adult female dogs. Procedures-The dogs divided into two equal groups. Laparoscopic ovariohysterectomy performed using either monopolar (n=12) or bipolar (n=12) electrocoagulati...

BACKGROUND In certain medical applications, it is necessary to be able to determine the position of a needle inside the body, specifically with regards to identifying certain tissue types. By measuring the electrical impedance of specific tissue types, it is possible to determine the type of tissue the tip of the needle (or probe) is at. MATERIALS AND METHODS Two methods have been investigate...

OBJECTIVE To compare the efficacy of intraturbinate monopolar cautery, bipolar cautery, high frequency monopolar and high frequency bipolar cautery in inferior turbinate hypertrophy. STUDY DESIGN Prospective randomized single blinded clinical study METHOD The study comprised of 80 patients divided in 4 groups each of 20 patients who underwent monopolar cautery, Bipolar cautery, high frequen...

The additive genetic heritability of both monopolar and bipolar EEG spectral power in a sample of 305 non-twin sibships comprising 690 individuals (age range 7-65) was estimated in order to investigate their regional variation. The heritabilities of the bipolar EEG spectral power ranged from 0.10 to 0.63 in 38 electrode-pairs, and those of monopolar power ranged from 0.23 to 0.68 in 19 electrod...

This paper is devoted to the desynchronizing effects of bipolar stimuli on a synchronized cluster of globally coupled phase oscillators. The bipolar pulses considered here are symmetrical and consist of a positive and a negative monopolar pulse. A bipolar single pulse with the right intensity and duration desynchronizes a synchronized cluster provided the stimulus is administered at a vulnerabl...

Cortex-muscle coherence (CMC) reflects coupling between magnetoencephalography (MEG) and surface electromyography (sEMG), being strongest during isometric contraction but absent, for unknown reasons, in some individuals. We used a novel nonmagnetic high-density sEMG (HD-sEMG) electrode grid (36 mm × 12 mm; 60 electrodes separated by 3 mm) to study effects of sEMG recording site, electrode deriv...

PURPOSE To compare bipolar resection with the conventional monopolar transurethral resection of the prostate (TURP) with respect to peri- and postoperative complications and long-term outcome. PATIENTS AND METHODS Patients with consecutive benign prostatic hyperplasia needing surgery (n=185) from the hospital's waiting list were randomized to TURP using either a bipolar or a monopolar system....

We compare results of a hybrid monopolar vs. a hybrid bipolar thoracoscopic approach employing radiofrequency (RF) sources for the surgical treatment of lone atrial fibrillation (LAF). From January 2008 to June 2010, 19 patients (35.1%) underwent RF monopolar/monolateral RF ablation, whereas 35 (64.9%) had RF bipolar/bilateral thoracoscopic ablation. One-year time-related prevalence of postoper...

PURPOSE Bipolar energy has recently been used for transurethral resection of bladder tumor (TURBT). Although this modality is thought to be safe, there are some controversies concerning the pathologic accuracy of the biopsy specimens. We compared clinical efficacy, safety, and pathologic characteristics of deep biopsy specimens between bipolar and monopolar devices. MATERIALS AND METHODS From...

OBJECTIVE To compare the in-vitro efficiency of a hypertonic saline (HS)-enhanced bipolar radiofrequency (RF) system with monopolar RF applications by assessing the temperature profile and dimensions of RF-created coagulation necrosis in bovine liver. MATERIALS AND METHODS A total of 27 ablations were performed in explanted bovine livers. After placement of two 16-gauge open-perfused electrod...