GEORGE YANNI, M.D.

LOMA LINDA, CA

Research Active
Pediatrics NPI registered 20+ years 4 publications 1995 – 2023 NPI: 1942223425

Practice Location

11370 ANDERSON ST
LOMA LINDA, CA 92354-3450

Phone: (909) 558-2848

What does GEORGE YANNI research?

G S Yanni studies the impact of liver transplantation on children suffering from serious liver diseases like autoimmune hepatitis and ornithine transcarbamylase deficiency. Autoimmune hepatitis can damage the liver and often leads to the need for a transplant, while ornithine transcarbamylase deficiency affects the body's ability to process proteins, resulting in dangerous ammonia build-up. His research aims to improve treatment strategies and understand the long-term effects of these surgeries on children's health, particularly in assessing the likelihood of disease recurrence.

Key findings

  • In a study of 65 children with autoimmune hepatitis or cryptogenic chronic hepatitis, 62% needed a liver transplant, with 33% experiencing a return of their disease post-surgery.
  • For children with ornithine transcarbamylase deficiency, three boys who received liver transplants saw their ammonia levels drop to safe levels within 24 hours, and two continued to develop normally afterward.
  • The study on gastrointestinal blood flow measurements showed that while changing light intensity slightly lowered oxygen readings, these changes were not significant for patient care.

Frequently asked questions

Does Dr. Yanni study liver diseases in children?
Yes, Dr. Yanni focuses on serious liver diseases such as autoimmune hepatitis and how liver transplants can help children with these conditions.
What treatments has Dr. Yanni researched?
He has researched liver transplantation as a treatment for various liver diseases and metabolic disorders in pediatric patients.
Is Dr. Yanni's work relevant to families with children needing a liver transplant?
Yes, his research provides important information on the outcomes and effectiveness of liver transplants for children facing serious liver conditions.
What should I know about the risk of disease recurrence after a liver transplant?
Dr. Yanni's studies indicate that the risk of disease recurrence, such as in autoimmune hepatitis, can be significant, affecting about one-third of children after transplant.

Publications in plain English

Advancing the Field of Pediatric Liver Transplantation: Urgent Action Items Identified During the 2022 Society of Pediatric Liver Transplantation Meeting.

2023

Transplantation

Feldman AG, Adams M, Griesemer AD, Horslen S, Kelly B +9 more

PubMed

Orthotopic liver transplantation for autoimmune hepatitis and cryptogenic chronic hepatitis in children.

2001

Transplantation

Bahar RJ, Yanni GS, Martín MG, McDiarmid SV, Vargas JH +7 more

Plain English
This study looked at 65 children with autoimmune hepatitis (AIH) or cryptogenic chronic hepatitis (CCH), two serious liver diseases that often lead to liver transplants. It found that 62% of the children needed a liver transplant, and 33% of those who received transplants experienced a return of their disease afterwards. The research highlights that CCH is more severe than type 1 AIH in children, and that African-American children had a higher chance of their disease coming back after surgery compared to Hispanic children.

PubMed

The role of orthotopic liver transplantation in the treatment of ornithine transcarbamylase deficiency.

1998

Liver transplantation and surgery : official publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society

Busuttil AA, Goss JA, Seu P, Dulkanchainun TS, Yanni GS +2 more

Plain English
This study looked at how well liver transplants help children with ornithine transcarbamylase deficiency, a condition that affects the body’s ability to process certain proteins. Three boys under one year old received liver transplants and saw their ammonia levels drop to a safe range within 24 hours, and two of them continued to develop normally after the surgery. This is important because it shows that early liver transplants can effectively treat this condition and help prevent serious brain injury from high ammonia levels.

PubMed

Factors influencing reflectance spectrophotometric measurements of gastrointestinal mucosal blood flow.

1995

Gastrointestinal endoscopy

Leung FW, Lo SK, Phan QQ, Leung JW, Yanni GS +1 more

Plain English
This study looked at how different conditions, like light intensity and probe angle, affect measurements of blood flow in the gut using a special light-based technique. Researchers found that changing the light strength lowered oxygen measurements slightly, but this change is not significant for patient care. They also discovered that adding supplemental oxygen improved oxygen levels in some patients, and minor changes in the angle of the measuring tool did not seriously affect results, which means paying attention to these factors can improve the accuracy of this medical testing method.

PubMed

Frequent Co-Authors

S V McDiarmid Amy G Feldman Megan Adams Adam D Griesemer Simon Horslen Beau Kelly Alisha M Mavis George V Mazariegos Vicky L Ng Emily R Perito

Physician data sourced from the NPPES NPI Registry . Publication data from PubMed . Plain-English summaries generated by AI. Not medical advice.