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Surgery​


The purpose of the General and Vascular Surgery specialty research group is to organize research-oriented surgeons in order to stimulate collaboration and evidence based improvements in the field. Some topic areas of interest include: improving melanoma outcomes, examining outcomes for complicated diverticulitis, examining Colon ERAS data, and laparoscopic cholecystectomy management retrospective analysis. 


Physicians Involved in Research


Ongoing and Completed Surgery Projects, All Funding Mechanisms

A randomized, double-blind noninferiority trial of adductor canal catheters for postoperative pain management among patients undergoing elective unilateral total knee arthroplasty
Adrian Hinman, Andy Avins | Surgery Orthopedic | DSGP | Ongoing

A study on the effect of nerve block on transgender patients undergoing top surgery
Tong, Winnie MD | Surgery Plastic | CB | Ongoing

An Evaluation of the KPNC Abdominal Aortic Aneurysm Screening Program 1275277-12]
Andrew Avins, Robert Chang  | Surgery Vascular | CESR | Ongoing

BEST-CLI
Robert Chang, Osvaldo Yano, Hong Hua, Aaron Baker, Jeffry Cardneau Michael Peterson, Joy Garg, Kian Mostafavi, Tazo Inui Owen Palmer, Rishad Faruqi, Nayan Sivamurthy, Abed Joseph " | Surgery Vascular | NIH | Ongoing

Carotid Revasuscularization trial (CREST-2)
Robert Chang, Mai Nguyen-Huynh | Surgery Vascular | NIH | Ongoing

Developing a TPMG Pathway for Selective Oncotype Testing in Early Breast Cancer
Veronica Shim, Laurie Habel | Surgery Oncologic | DSGP | Ongoing

Does timing to surgery for lung cancer have an effect on outcomes?
Jeffrey Velotta, Julie Schmittdiel | Surgery Thoracic | RAU | Ongoing

How COVID Changed Our Practice: Telehealth in TPMG Surgical Cancer Care
Gillian Kuehner , Mary Reed | Surgery | RAU | Ongoing

Impact of Metformin use on Benign Prostate Hyperplasia
Robert Chang, Osvaldo Yano, Hong Hua, Aaron Baker, Jeffry Cardneau, Michael Peterson, Joy Garg, Kian Mostafavi, Tazo Inui, Owen Palmer, Rishad Faruqi, Nayan Sivamurthy, Abed Joseph, Matt Solomon | Surgery Vascular | Other | Ongoing

Lymphatic Microsurgical Preventative Healing Approach to Prevent Lymphedema in Patients Undergoing Axillary Lymph Node Dissection for Breast Cancer
Amanda Graff-Baker, Marilyn Kwan | Surgery | DSGP | Ongoing

Natural history assessment of abdominal aortic aneurysms under surveillance in KPNC [1283137-3]
Robert Chang | Surgery Vascular | Not funded (support from CESR) | Ongoing

Optimizing Abdominal Aortic Aneurysm Surveillance and Intervention to Prevent Rupture
Robert Chang, MD | Surgery Vascular | PRP | Ongoing

PAN #3: Efficacy and Value
Kourosh Kojouri, Lisa Herrinton | Surgery Oncologic | RAU | Ongoing

Predictors of Therapeutic Benefits, Surgical Outcomes, and Complications of Endovascular Stent Grafts for Repair of Abdominal Aortic Aneurysm INTERREGIONAL
Robert Chang | Surgery Vascular | Not funded (support from Implant registry) | Ongoing

Safety and Efficacy of Corticosteroid Choice in Trigger Finger Injection
Todd Theman, Julie Schmittdiel | Surgery Plastic | RAU | Ongoing

Breast reconstruction surgery: comparison of three techniques
Dan Jacobs, Lisa Herrinton | Surgery | RAU | Not Started

A Natural History of Descending Thoracic Aortic Dissections in Northern California Kaiser Permanente: An analysis of incidence, interventions and outcomes during longitudinal follow-up.
Aaron Baker | Surgery Vascular | CB | Completed

Aspirin Exacerbated Respiratory Disease:  Challenges in Diagnosis and Treatment
Jonathan Liang | Surgery Head and Neck | CB | Completed

Clinical and Demographic Characteristics of Adults Undergoing Surgery for Obstructive Sleep Apnea: Identification of Potential Barriers to Access to Care
Megan Durr | Surgery Head and Neck | CB | Completed

Comparison of Repair vs. Meniscectomy for Bucker Handle Meniscal Tears
David Ding | Surgery | CB | Completed

Current outcomes & management of asymptomatic carotid stenosis
Bobby Chang, Mai Nguyen-Huynh | Surgery Vascular | PRP | Completed

Disparities in Speech Therapy for Voice Disorders in English versus Non-English-Speaking Patients
Nancy Jiang | Surgery Head and Neck | CB | Completed

Does Previous Knee Arthroscopy Affect the Outcomes of Total Knee Replacement?
Ronald Wyatt | Surgery Orthopedic | CB | Completed

Effect of Consolidating Thoracic Surgery Care within an Integrated Healthcare System on Outcomes for Lung Cancer Patients Undergoing Pulmonary Lobectomy
Thomas Tung | Surgery Thoracic | CB | Completed

Factors Predicting Failure of Radial Head Arthroplasty
Mark Dillon | Surgery Orthopedic | CB | Completed

Impact of thoracic regionalization on outcomes for esophageal cancer patients undergoing esophagectomy
Jeffrey Velotta | Surgery Thoracic | Other | Completed

Implementation and Outcomes Following Regionalization of Adrenal Surgery
Reza Rahbari, Lisa Herrinton | Surgery | RAU | Completed

Implementation of Evidence-Based Surgery for Pediatric Hernia Repair
Albert Chong, Lisa Herrinton | Surgery Pediatrics | RAU | Completed

Implementation of Post-Mastectomy Home Recovery Program in a Large, Integrated Health Delivery System
Brooke Vuong, Julie Schmittdiel | Surgery | RAU | Completed

Long term Follow up of endovascular aortic aneurysm repair in the Kaiser Permanente Northern California region 2000-2009
Robert Chang | Surgery Vascular | CB | Completed

Management of Anterior Cruciate Ligament Injuries and Risk of Subsequent Surgical Interventions
David Ding | Surgery Orthopedic | CB | Completed

Minimally invasive esophagectomy
Simon Ashiku, Andy Avins | Surgery | RAU | Completed

Natural history of body weight changes with gastrostomy feeding tube, jejunostomy feeding tube, esophageal stent, or no intervention in patients with esophageal cancer who start chemotherapy and chemoradiation
Jeffrey Velotta, Lisa Herrinton | Surgery Thoracic | RAU | Completed

Outcomes of laparoscopic pediatric hernia repair compared with the open approach
Albert Chong, Lisa Herrinton | Surgery Pediatrics | RAU | Completed

Risk factors for conversion of hip arthroscopy to total hip arthroplasty
David Ding, Adrian Hinman, Andy Avins | Surgery Orthopedic | RAU | Completed

Surgical resection of hepatic metastasis in patients with colorectal cancer
CK Chang, Andy Avins | Surgery | RAU | Completed

The Adult Neck Mass: Predictors of Malignancy
Kevin Wang | Surgery Head and Neck | CB | Completed

Validation Study of Kids Hearing Game - a Self-Administered Pediatric Audiometry Application
Brian Kung  | Surgery Head and Neck | CB | Completed