It is a prospective, single center, single-arm clinical study to enroll a maximum of 25 subjects.
It is a prospective, single center, single-arm clinical study to enroll a maximum of 25 subjects. The objective of this study is to evaluate the clinical utility of the da Vinci® SP™ Surgical System, instruments and accessories in TORS benign base of tongue resection procedures for the treatment of moderate to severe OSA. da Vinci® SP™ Surgical System, instruments and accessories are the approved medical device product by MFDS (Ministry of Food and Drug Safety, Republic of Korea).
Study Type
OBSERVATIONAL
Enrollment
25
Subjects will undergo TORS benign base of tongue resection procedures (i.e., partial glossectomy, epiglottoplasty, epiglottectomy, and/or lingual tonsillectomy) for the treatment of OSA. Concomitant non-robotic surgical procedures may also be performed as part of the subject's treatment for OSA, and can include one or more of the following: uvulopalatopharyngoplasty (UPPP), lateral pharyngoplasty, expansion sphincter pharyngoplasty, palatine tonsillectomy, or a modified uvulopalatoplasty. Nasal surgery such as septoplasty or turbinoplasty can be combined if it is needed.
Severance Hospital, Yonsei University Health System
Seoul, South Korea
Type 1 Polysomnography (PSG)
Type I PSG measurements demonstrating Apnea Hypopnea Index (AHI) reduction.
Time frame: Pre-operative (within 12 months prior to surgery)
Type 1 Polysomnography (PSG)
Type I PSG measurements demonstrating Apnea Hypopnea Index (AHI) reduction.
Time frame: 90-150 days after surgery
Total operative time
defined as the time the patient spends in the operating room (OR), i.e. OR "In and Out" time. This includes the patient prep time, anesthesia time, robotic docking time, robotic procedure time and time taken for non-robotic concomitant procedures, which are part of the multi-level surgical treatment approach for that particular patient.
Time frame: Intra-Operative Assessment
Robotic procedure time
defined as time from docking the robot at the initiation of surgery to undocking at the completion of surgery.
Time frame: Intra-Operative Assessment
Estimated blood loss (EBL)
defined as the estimated amount of blood loss
Time frame: Intra-Operative Assessment
Postoperative hemorrhage
categorized using the Common Terminology Criteria for Adverse Events (CTCAE) v4.03
Time frame: Intra-Operative Assessment
Blood transfusions
defined as whether a blood transfusion was applied or not.
Time frame: Intra-Operative Assessment
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Length of hospital stay (LOS)
Duration of hospital say(from admission to discharge)
Time frame: Admission to the hospital to discharge from the hospital (check out time), up to an approximate of one week
Volume of resected tissue
measured using the volume displacement method
Time frame: Immediately after surgery
Conversion rate
from da Vinci SP surgery to any alternate method required to complete the indicated procedure.
Time frame: Intra-Operative Assessment
Change in Apnea index (AI)
at 3 months (+60 days) post-surgery compared to baseline
Time frame: Pre-operative Assessments & Post-Operative (3 months +60 days) Assessment
Change in Hypopnea index (HI)
at 3 months (+60 days) post-surgery compared to baseline
Time frame: Pre-operative Assessments & Post-Operative (3 months +60 days) Assessment
Change in Percentages of sleep stages (N1, N2, N3, R)
at 3 months (+60 days) post-surgery compared to baseline
Time frame: Pre-operative Assessments & Post-Operative (3 months +60 days) Assessment
Change in Lowest oxygen saturation (LSAT)
at 3 months (+60 days) post-surgery compared to baseline
Time frame: Pre-operative Assessments & Post-Operative (3 months +60 days) Assessment
Change in Percent sleep time below 90 percent oxygen saturation (ST90)
at 3 months (+60 days) post-surgery compared to baseline
Time frame: Pre-operative Assessments & Post-Operative (3 months +60 days) Assessment
Change in Epworth Sleepiness Scale (ESS)
at 3 months (+60 days) post-surgery compared to baseline
Time frame: Pre-operative Assessments & Post-Operative (3 months +60 days) Assessment
Change in Stanford Sleepiness Scale (SSS)
at 3 months (+60 days) post-surgery compared to baseline
Time frame: Pre-operative Assessments & Post-Operative (3 months, +60 days) Assessment
Change in Berlin Questionnaire
at 3 months (+60days) compared to baseline
Time frame: Pre-operative Assessments & Post-Operative (3 months, +60 days) Assessment
Change in MDADI (MD Anderson Dysphagia Inventory)
at 3 months (+60days) compared to baseline
Time frame: Pre-operative Assessments & Post-Operative (3 months, +60 days) Assessment
Adverse Events (AE)
Assessment of all reported adverse events (AE) within 3 months +60 days (90-150 days) post-surgery. Summarizing the incidence and frequency of all reported adverse events and categorizing them using CTCAE v4.03
Time frame: Through study conclusion (3 month follow up +60 days)
Change in Upper airway volume
measured by CT scan as optional
Time frame: Pre-operative Assessment, Post-operative (within 30days ±14 days from surgery) Assessment & Post-Operative (3 months, +60 days) Assessment