Michele Barnhill

Dr. Michele Barnhill

orcid

Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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3 July 2025 in Journal of Fungi
Verified
Journal Article
Open access
PDF file
APAaron Pulsipher
Aaron Pulsipher
MBMichele Barnhill
Michele Barnhill
HVHolenarasipur Vikram
Holenarasipur Vikram
MGMichael Gotway
Michael Gotway
RCRodrigo Cartin-Ceba
Rodrigo Cartin-Ceba
KHKealy Ham
Kealy Ham
Pneumocystis pneumonia (PCP) is a serious fungal infection affecting immunocompromised hosts. Decompensated cirrhosis leads to cirrhosis-associated immune dysfunction (CAID), a form of impaired cellular immunity that may predispose patients to opportunistic infections such as PCP. We conducted a retrospective review of 727 patients with proven or probable PCP from 2017 to 2025. Of these, 33 had decompensated cirrhosis. These patients were stratified into two groups: Cirrhosis Only (n = 16) and Cirrhosis with Additional Immunocompromising Conditions (n = 17). Among the patients with cirrhosis, the overall mortality was 48%, with the 90-day mortality reaching 57.6% (95% CI: 39.2–74.5%). Compared with those without cirrhosis, the patients with cirrhosis had a higher risk of mortality (OR: 4.08, 95% CI: 2.01–8.30, p < 0.001), increased intensive care unit (ICU) admission (87% vs. 42%, p < 0.001), and greater need for renal replacement therapy (54.6% vs. 7.5%, p < 0.001). These findings suggest that decompensated cirrhosis alone may represent a sufficient and underrecognized risk factor for PCP, with a high associated mortality. Given the preventable nature of this infection, future studies are needed to assess the incidence, define the risk, and investigate the role of prophylaxis in this vulnerable population.

10 February 2024 in Current Hepatology Reports
Verified
Journal Article
Closed access
PDF file
MBMichele Barnhill
Michele Barnhill
CJChanna R Jayasekera
Channa R Jayasekera

1 December 2023 in ACG Case Reports Journal
Verified
Journal Article
Open access
MBMichele Barnhill
Michele Barnhill
RYReena Nazek Yaman
Reena Nazek Yaman
KRKrystal Renszel
Krystal Renszel
SASadeer J. Alzubaidi
Sadeer J. Alzubaidi
HVHugo Vargas
Hugo Vargas
DCDavid Chascsa
David Chascsa
Hyperammonemia in adults is most often due to cirrhosis. Ammonia is metabolized through the urea cycle. With liver disease, this pathway is altered, and urea is unable to be formed, creating a buildup of ammonia with numerous side effects, including encephalopathy. A less common presentation is hyperammonemia in the absence of liver disease. We present a rare case of non-cirrhotic hyperammonemia due to a splenogonadal shunt.

15 June 2023 in Journal of Medical Case Reports
Verified
Journal Article
Open access
PDF file
MBMichele Barnhill
Michele Barnhill
BLBlanca Lizaola-Mayo
Blanca Lizaola-Mayo
SNSailendra G. Naidu
Sailendra G. Naidu
SSSurbhi Shah
Surbhi Shah
DCDavid M. H. Chascsa
David M. H. Chascsa
Background: In the 1990s, transjugular intrahepatic portosystemic shunts (TIPS) were performed using bare metal stents, and stent-induced hemolysis was a complication noted in 10% of patients. This was due to the mechanical stress created by turbulent flow from the uncovered interstices. Polytetrafluoroethylene (PTFE) stents came into regular use in the early 2000s becoming the standard equipment for TIPS placements, which are predominately covered. Due to this, stent-induced hemolysis has become a rare phenomenon. Case presentation: We describe a case of TIPS-induced hemolysis in a 53-years-old Caucasian female patient without cirrhosis. The patient had a history of heterozygous factor 5 Leiden mutation and abnormal lupus anticoagulant profile with development of a portal vein thrombus. She had undergone previous TIPS placement complicated by a TIPS thrombosis 3 years after initial placement requiring venoplasty and extension of the stent. Within one month, the patient developed hemolytic anemia with extensive evaluation that did not yield an alternative cause. Due to temporal association and clinical symptoms, the hemolytic anemia was attributed to the recent TIPS revision. Conclusion: This particular case of TIPS-induced hemolysis in a patient who does not have cirrhosis has not been previously described in the literature. Our case highlights that TIPS-induced hemolysis should be considered in anyone who could have potential underlying red blood cell dysfunction, not just those with cirrhosis. Further, the case demonstrates an important point that mild hemolysis (i.e., not requiring blood transfusion) can likely be managed conservatively, without stent removal.

3 January 2023 in Liver Transplantation
Verified
Journal Article
Closed access
MBMichele Barnhill
Michele Barnhill
ECElizabeth J. Carey
Elizabeth J. Carey

8 May 2026 in Liver Transplantation
Verified
Journal Article
Closed access
CJChanna R Jayasekera
Channa R Jayasekera
PEPedro Henrique de Borba Engster
Pedro Henrique de Borba Engster
ETEmma C. Terwilliger
Emma C. Terwilliger
SSShirshendu Sinha
Shirshendu Sinha
LLLpc Julie Lankton
Lpc Julie Lankton
RDRolland C. Dickson
Rolland C. Dickson
An abstract is unavailable. This article is available as a PDF only.