Specialties
Joshua Hermsen, MD
Associate Professor
- Section of Pediatric Cardiothoracic Surgery
- Division of Cardiothoracic Surgery
hermsen@surgery.wisc.edu
(608) 262-3858
Education
- MD, Medical University of South Carolina
- General Surgery Residency, University of Wisconsin Madison, Madison, WI
- Cardiothoracic Surgery Fellowship, University of Washington Medical Center, Seattle, WA
- Congenital Cardiac Surgery Fellowship, Seattle Children’s Hospital, Seattle, WA
Clinical Specialties
Dr. Hermsen specializes in the care of patients of all ages with congenital heart disease ranging from repairs in the neonatal period to multiple re-do operations and transplants in adult patients of all ages. He also has interest and expertise in treating patients with hypertrophic cardiomyopathy complicated by obstruction of the left ventricular outflow tract, mitral valve problems and heart rhythm problems. He also has extensive experience in treating patients with congenital and acquired heart disease complicated by infectious endocarditis.
Dr. Hermsen led a team that completed a successful heart transplant surgery. Read more here.
Research Interests
Dr. Hermsen’s research interests focus on demonstrating utility of medical 3D printing related to septal myectomy surgery, cardiomyopathy, and examining the effects of using cardiac surgical simulation for resident education.
Recent Publications
Native Tricuspid Valve Endocarditis Delayed Glenn Procedure: A Case Report.
Argo MB, Hermsen JL, Lamers L, Wilhelm M, Bergstrom C, Anagnostopoulos PV
World J Pediatr Congenit Heart Surg 2025 Feb 20; 21501351251316231
[PubMed ID: 39973211]Primary inferior vena cava synovial sarcoma treated with caval replacement during cardiopulmonary bypass and ante situm liver perfusion.
Frenkel M, Guenther T, Hermsen J, Collins K, Mezrich J, Al-Adra D, Xia Y
J Surg Case Rep 2024 Dec; 2024(12): rjae760
[PubMed ID: 39678485]Standardized Temporary Atrial Epicardial Wire Locations Lead to Enhanced Atrial Signal Identification.
Atlas N, Zhang X, Torgeson JN, Hermsen J, Gibson WJ, Harmon AM, Von Bergen NH
J Intensive Care Med 2024 Sep 19; 8850666241279229
[PubMed ID: 39295470]Invited Commentary: Pulmonary Artery Stenosis After the Arterial Switch Operation: Ounces of Prevention Better Than Pounds of Cure.
Hermenson JL, Anagnostopoulos PV
World J Pediatr Congenit Heart Surg 2024 Jul; 15(4): 430-431
[PubMed ID: 39056453]Surgically induced aortic coarctation in a neonatal porcine model allows for longitudinal assessment of cardiovascular changes.
Stellon M, Gober L, Culver MA, Hermsen J, Irrer D, Witzenburg C, Roldán-Alzate A, Lamers L
Am J Physiol Heart Circ Physiol 2024 May 01; 326(5): H1117-H1123
[PubMed ID: 38488518]