Clinician's Roundtable

What happens when vitreous hemorrhage (VH) secondary to non-tractional PDR doesn't clear on its own? And does preoperative anti-VEGF actually change surgical outcomes? Maria Berrocal, MD, speaks with Sumit Sharma, MD, about a retrospective case series of 360 patients who underwent vitrectomy for non-clearing VH without tractional elements, examining whether preoperative anti-VEGF injection affects the risk of postoperative rebleeding, when to consider repeat vitrectomy, and how both physicians approach these cases in their own practices.

Host: Peter Buch, MD, FACG, AGAF, FACP

Guest: Mallik Greene, PhD

Guest: Jordan Karlitz, MD


A study published in the Journal of the National Comprehensive Cancer Network examined follow-up colonoscopy rates after positive stool-based colorectal cancer screening tests, finding notably higher and faster completion rates with multi-target stool DNA testing compared to fecal immunochemical testing. These findings highlight the critical role of patient navigation in closing follow-up gaps and reducing disparities across racial and ethnic groups.
Joining Dr. Peter Buch to discuss their research and its implications for everyday practice are Dr. Mallik Greene and Dr. Jordan Karlitz. Dr. Greene is a health economics and outcome research expert at Abbott Cancer Diagnostics, and Dr. Karlitz is a volunteer gastroenterology professor at the University of Colorado School of Medicine and a Senior Medical Officer at Abbott Cancer Diagnostics.
Read the JNCCN study: Multitarget Stool DNA Versus Fecal Immunochemical Testing: A National Assessment of Follow-Up Colonoscopy by Race and Ethnicity

Host: Shelina Ramnarine, PhD

Guest: David A. Johnson, MD, FACG, FACP


Noninvasive colorectal cancer screening is only effective when abnormal results lead to timely, high-quality colonoscopy, but recent data shows significant gaps in follow-up. Join Dr. Shelina Ramnarine and Dr. David Johnson, Chief of Gastroenterology at Eastern Virginia Medical School at Old Dominion University, as they explore how primary acre clinicians can set expectations with patients, address barriers to follow-up, and strengthen workflows and care coordination to close the loop.

Host: Brian P. McDonough, MD, FAAFP

Guest: David A. Lieberman, MD


Long-term effectiveness of colorectal cancer (CRC) screening depends on more than the performance of an individual test; it requires sustained adherence to recommended screening intervals and timely follow-up after abnormal results. But real-world data shows that many patients fall off track over time. Learn more about how we can improve adherence, reduce disparities, and strengthen continuity across the screening pathway as Dr. Brian McDonough sits down with Dr. David Lieberman, Professor Emeritus in the Department of Medicine and former Chief of the Division of Gastroenterology and Hepatology at Oregon Health & Science University in Portland.

Host: Shelina Ramnarine, PhD

Guest: Samuel Ubanyionwu, PharmD, EMBA


Accurate IV medication delivery depends on more than proper pump programming alone. It requires a comprehensive understanding of smart pump drug libraries, dose error reduction software (DERS), infusion mechanics, and system-level safety procedures. To explore how these elements work together to support IV medication accuracy, patient safety, and clinical decision-making, Dr. Shelina Ramnarine speaks with Dr. Samuel Ubanyionwu, Medication Management Informaticist in Pharmacy Services and an Assistant Professor of Pharmacy at the Mayo Clinic College of Medicine.