Johnny Yi, M.D.

Closed for Enrollment

• Advanced Biomarker Assessment of Adipose Derived Stem Cells and Fibroblasts in Patients with and without Pelvic Organ Prolapse Scottsdale/Phoenix, Ariz.

  This study will assess advanced biomarkers in patients with and without vaginal prolapse.  Assessments will be directed at vaginal fibroblasts and adipose derived stem cells (ASC’s). 

• Comparison of Urinary Tract Infections Rates using 50% Dextrose plus Washout Versus Normal Saline as Cystoscopy Fluid: A Prospective Study Scottsdale/Phoenix, Ariz.

  The purpose of this study is to compare the rates of postoperative urinary tract infections (UTI) between patients who undergo cystoscopy using 50% dextrose injection plus bladder washout versus normal saline after hysterectomy for benign indications

• Evolution of the Vaginal and Bladder Microbiome in Patients Undergoing Vaginal Estrogen or Vaginal LASER Therapy Scottsdale/Phoenix, Ariz.

  The purpose of this study is to evaluate vaginal microbiome at baseline and at 3 months in menopausal women with either vaginal atrophy (with or without rUTI) or rUTI, following treatment of vaginal estrogen and LASER therapy, to evaluate the bladder microbiome at baseline and at 3 months in menopausal women with vaginal atrophy with rUTI undergoing treatment of vaginal estrogen or LASER therapy, and to compare the microbial communities between women who undergo vaginal estrogen with those who undergo LASER therapy.

   

• Fractional CO2 Vaginal LASER Therapy for Recurrent Urinary Tract Infection Jacksonville, Fla., Scottsdale/Phoenix, Ariz.

  The purpose of this study is to evaluate the clinical difference between the LASER and topical vaginal estrogen in treating patients with recurrent urinary tract infections (rUTI). 

• Improving Proper Disposal of Unused Opioid Medications After Surgery Scottsdale/Phoenix, Ariz.

  The purpose of this study is to evaluate the impact of education for proper disposal and rate of utility of disposal bag.

• Patient-Directed Postoperative Opioid Prescribing for Gynecologic Surgery Scottsdale/Phoenix, Ariz.

  The purpose of this study is to evaluate the impact of patient input on opioid prescribing and overall opioid use following gynecologic surgery.

• Patient-Reported Outcome Measures and Satisfaction for Same-Day Discharge Following Robotic Hysterectomy. A Patient-Centered Approach in Evaluating Surgical Success Scottsdale/Phoenix, Ariz.

  The purpose of this study is to measure patient-reported outcomes regarding symptoms, function, and patient satisfaction following a simple robotic hysterectomy, and compare these measures between patients who are discharged on the day of surgery and patients who stay overnight in the hospital.

• Robotic Single Port Gynecologic Surgery with da Vinci SP1098: Prospective Analysis of Safety and Patient Satisfaction Scottsdale/Phoenix, Ariz.

  The purpose of this study is to describe patient outcomes after benign hysterectomy performed with the da Vinci Single port surgical system (SPORT), assess patient satisfaction with this surgical modality, and document operative learning curve markers for surgeons using the platform.

• The Effect of Hip Arthroscopy on Female Pelvic Floor Symptoms Scottsdale/Phoenix, Ariz.

  The purpose of this study is to assess for improvement after recovering from hip surgery in the symptoms of pelvic floor disorders that existed prior to hip arthroscopy.