The Experts below are selected from a list of 186 Experts worldwide ranked by ideXlab platform

Elisabeth Hultcrantz - One of the best experts on this subject based on the ideXlab platform.

Elisabeth Ericsson - One of the best experts on this subject based on the ideXlab platform.

Ninos J Joseph - One of the best experts on this subject based on the ideXlab platform.

  • staging of obstructive sleep apnea hypopnea syndrome a guide to appropriate treatment
    Laryngoscope, 2004
    Co-Authors: Michael Friedman, Hani Ibrahim, Ninos J Joseph
    Abstract:

    OBJECTIVE: Early studies by Friedman et al. have demonstrated the value of staging obstructive sleep apnea/hypopnea syndrome (OSAHS) patients for the prediction of success for uvulopalatopharyngoplasty (UPPP) on the basis of short-term follow up. The goal of this study is to test the value of this staging system in a prospective study. STUDY DESIGN: This is a prospective study of two cohorts of patients: one was treated with the benefit of a clinical staging system and the other without. METHODS: Patients with symptoms of OSAHS were assessed by polysomnography and were staged according to a previously described staging system. The staging system is based on palate position, tonsil size, and body mass index (BMI). The control group was treated without the benefit of staging. All patients in the control group were treated with UPPP only. Patients in the experimental group were treated based on their clinical stage. Patients with stage I disease, regardless of the severity of disease, were treated with UPPP only. Selected patients with stage II and stage III disease were treated with UPPP in addition to a staged tongue-base reduction using a Radiofrequency Technique (TBRF). RESULTS: Follow-up at 6 months showed significant improvement compared with a group of patients treated without the benefit of a staging system. Successful treatment of patients with stage II disease improved from 37.9% to 74.0%. The overall success rate improved from 40% to 59.1%. CONCLUSION: Clearly, patients with stage I disease had the best success rate, but a selective protocol based on clinical staging improves the overall success rate. In addition, it can eliminate as surgical candidates those patients with whom the procedure is likely to fail.

Michael Friedman - One of the best experts on this subject based on the ideXlab platform.

  • staging of obstructive sleep apnea hypopnea syndrome a guide to appropriate treatment
    Laryngoscope, 2004
    Co-Authors: Michael Friedman, Hani Ibrahim, Ninos J Joseph
    Abstract:

    OBJECTIVE: Early studies by Friedman et al. have demonstrated the value of staging obstructive sleep apnea/hypopnea syndrome (OSAHS) patients for the prediction of success for uvulopalatopharyngoplasty (UPPP) on the basis of short-term follow up. The goal of this study is to test the value of this staging system in a prospective study. STUDY DESIGN: This is a prospective study of two cohorts of patients: one was treated with the benefit of a clinical staging system and the other without. METHODS: Patients with symptoms of OSAHS were assessed by polysomnography and were staged according to a previously described staging system. The staging system is based on palate position, tonsil size, and body mass index (BMI). The control group was treated without the benefit of staging. All patients in the control group were treated with UPPP only. Patients in the experimental group were treated based on their clinical stage. Patients with stage I disease, regardless of the severity of disease, were treated with UPPP only. Selected patients with stage II and stage III disease were treated with UPPP in addition to a staged tongue-base reduction using a Radiofrequency Technique (TBRF). RESULTS: Follow-up at 6 months showed significant improvement compared with a group of patients treated without the benefit of a staging system. Successful treatment of patients with stage II disease improved from 37.9% to 74.0%. The overall success rate improved from 40% to 59.1%. CONCLUSION: Clearly, patients with stage I disease had the best success rate, but a selective protocol based on clinical staging improves the overall success rate. In addition, it can eliminate as surgical candidates those patients with whom the procedure is likely to fail.

Chang Hyung Lee - One of the best experts on this subject based on the ideXlab platform.

  • The Efficacy of Two Electrodes Radiofrequency Technique: Comparison Study Using a Cadaveric Interspinous Ligament and Temperature Measurement Using Egg White
    Pain Physician, 2010
    Co-Authors: Chang Hyung Lee
    Abstract:

    Background: One Technique in Radiofrequency neurotomies uses 2 electrodes that are simultaneously placed to lie parallel to one another. Comparing lesions on cadaveric interspinous ligament tissue and measuring the temperature change in egg white allows us to accurately measure quantitatively the area of the lesion. Methods: Fresh cadaver spinal tissue and egg white tissue were used. A series of samples were prepared with the electrodes placed 1 to 7 mm apart. Using Radiofrequency, the needle electrodes were heated in sequential or simultaneous order and the distance of the escaped lesion area and temperature were measured. Results: Samples of cadaver interspinous ligament showed sequential heating of the needles limits the placement of the needle electrodes up to 2 mm apart from each other and up to 4 mm apart when heated simultaneously. The temperature at the escaped lesion area decreased according to the distance for egg white. There was a significant difference in temperature at the escaped lesion area up to 6 mm apart and the temperature was above 50 ºC up to 5 mm in simultaneous lesion and 3 mm in the sequential lesion. Limitations:: The limitations of this study include cadaveric experimentation and use of intraspinous ligament rather than medial branch of the dorsal ramus which is difficult to identify. Conclusion: Heating the 2 electrodes simultaneously appears to coagulate a wider area and potentially produce better results in less time. Key words: Rhizotomy, Radiofrequency neurotomy, 2 needles, facet joint pain, low back pain, cadaveric tissue

  • The efficacy of two electrodes Radiofrequency Technique: comparison study using a cadaveric interspinous ligament and temperature measurement using egg white.
    Pain physician, 2010
    Co-Authors: Chang Hyung Lee, Richard Derby, Hyun Seok Choi, Sang Heon Lee, Hoon Kim, Yoon Kyu Kang
    Abstract:

    BACKGROUND One Technique in Radiofrequency neurotomies uses 2 electrodes that are simultaneously placed to lie parallel to one another. Comparing lesions on cadaveric interspinous ligament tissue and measuring the temperature change in egg white allows us to accurately measure quantitatively the area of the lesion. METHODS Fresh cadaver spinal tissue and egg white tissue were used. A series of samples were prepared with the electrodes placed 1 to 7 mm apart. Using Radiofrequency, the needle electrodes were heated in sequential or simultaneous order and the distance of the escaped lesion area and temperature were measured. RESULTS Samples of cadaver interspinous ligament showed sequential heating of the needles limits the placement of the needle electrodes up to 2 mm apart from each other and up to 4 mm apart when heated simultaneously. The temperature at the escaped lesion area decreased according to the distance for egg white. There was a significant difference in temperature at the escaped lesion area up to 6 mm apart and the temperature was above 50 degrees celsius up to 5 mm in simultaneous lesion and 3 mm in the sequential lesion. LIMITATIONS The limitations of this study include cadaveric experimentation and use of intraspinous ligament rather than medial branch of the dorsal ramus which is difficult to identify. CONCLUSION Heating the 2 electrodes simultaneously appears to coagulate a wider area and potentially produce better results in less time.