Prashanth Vallabhajosyula, MD, MS
ProfessorCards
About
Research
Publications
2025
Endovascular Repair vs Medical Therapy for Uncomplicated Acute Type B Dissection: Aortic Remodeling
Higaki A, Hameed I, Erez E, Hu K, Asmelash S, Chatterjee D, Shou B, Zafar M, Assi R, Vallabhajosyula P. Endovascular Repair vs Medical Therapy for Uncomplicated Acute Type B Dissection: Aortic Remodeling. Annals Of Thoracic Surgery Short Reports 2025, 3: 555-560. DOI: 10.1016/j.atssr.2025.01.012.Peer-Reviewed Original ResearchUncomplicated acute type B aortic dissectionThoracic endovascular aortic repairOptimal medical therapyMedical therapyAortic remodelingAortic levelsClinical outcomesClinical outcomes of thoracic endovascular aortic repairLumen diameterPatients treated with thoracic endovascular aortic repairOutcomes of thoracic endovascular aortic repairUncomplicated acute type B dissectionAcute type B aortic dissectionOMT patientsAcute type B dissectionType B aortic dissectionFavorable aortic remodelingOptimal initial managementInitial treatment modalityMedian Follow-UpType B dissectionEndovascular aortic repairB aortic dissectionFalse lumen thrombosisLeft subclavian arteryInstruction-Tuned Large Language Models for Clinical Data Extraction: Creating an Aortic Measurement Database from CT Radiology Reports
Erez E, Dankwa S, Tuttle M, Nasir A, Vallabhajosyula P, Schneider E, Assi R, Ong C. Instruction-Tuned Large Language Models for Clinical Data Extraction: Creating an Aortic Measurement Database from CT Radiology Reports. Journal Of Healthcare Informatics Research 2025, 1-19. DOI: 10.1007/s41666-025-00210-y.Peer-Reviewed Original ResearchLanguage modelFew-shotZero-ShotInformation extraction tasksMacro F1-scoreBERT-based modelsExtraction taskBERT modelChest Computed TomographyF1 scoreElectronic health recordsMinimal annotationStructure extractionTest setAortic measurementsAortic diameterHealth recordsThoracic aortic dilatationCT radiology reportsRelevant informationChest CT reportsHigh performanceAortic dilatationCT reportsAortic diseaseProgressive Hyperglycemia in Tolerant Miniature Swine Recipients of Composite Islet-Kidney Grafts is Not Due to Islet Loss but Rather to Increased Insulin Demand with Growth
Chauhan I, Llore N, Hirakata A, Ishikawa Y, Vallabhajosyula P, Weiner J, Yamada K, Sachs D, Griesemer A. Progressive Hyperglycemia in Tolerant Miniature Swine Recipients of Composite Islet-Kidney Grafts is Not Due to Islet Loss but Rather to Increased Insulin Demand with Growth. American Journal Of Transplantation 2025, 25: s546. DOI: 10.1016/j.ajt.2025.07.1268.Peer-Reviewed Original ResearchProgressive Hyperglycemia in Tolerant Miniature Swine Recipients of Composite Islet-kidney Grafts Is not due to Islet Loss but Rather to Increased Insulin Demand With Growth.
Chauhan I, Llore N, Hirakata A, Ishikawa Y, Vallabhajosyula P, Weiner J, Yamada K, Sachs D, Griesemer A. Progressive Hyperglycemia in Tolerant Miniature Swine Recipients of Composite Islet-kidney Grafts Is not due to Islet Loss but Rather to Increased Insulin Demand With Growth. Transplantation 2025 PMID: 40658951, PMCID: PMC12262162, DOI: 10.1097/tp.0000000000005447.Peer-Reviewed Original ResearchMulticenter Experience With the Unitary Stent Graft System for Endovascular Debranched Aortic Repair of Various Thoracoabdominal Aortopathies
Pupovac S, Restrepo-Espinosa V, Chen J, Zaky M, Answini G, Kelly P, Vallabhajosyula P, Nassiri N. Multicenter Experience With the Unitary Stent Graft System for Endovascular Debranched Aortic Repair of Various Thoracoabdominal Aortopathies. The Annals Of Thoracic Surgery 2025, 120: 442-449. PMID: 40484210, DOI: 10.1016/j.athoracsur.2025.05.026.Peer-Reviewed Original ResearchThoracoabdominal aortic aneurysmsAortic repairOpen surgeryTechnical successAortic aneurysmPatency ratesShort-neck infrarenal aneurysmsTarget vessel patency rateMedian hospital stayThirty-day mortalityClinical follow-upMajor adverse eventsStent Graft SystemMulti-center experienceMulti-center studyMedian followChronic dissectionInfrarenal aneurysmsReintervention rateEndoluminal bypassInfrarenal EVARThirty-dayStent graftHospital stayAdverse eventsCirculating Tissue Specific Extracellular Vesicles for Noninvasive Monitoring of Acute Cellular Rejection in Clinical Heart Transplantation
Korutla L, Hu R, Liu Y, Romano C, Habertheuer A, Abedi P, Wang H, Molugu S, Rostami S, Naji A, Nuqali A, Beasley M, Maulion C, Hahn S, Ahmad T, Wang Z, Sen S, Vallabhajosyula P. Circulating Tissue Specific Extracellular Vesicles for Noninvasive Monitoring of Acute Cellular Rejection in Clinical Heart Transplantation. Transplantation 2025, 109: 1540-1550. PMID: 40238644, DOI: 10.1097/tp.0000000000005369.Peer-Reviewed Original ResearchModerate acute cellular rejectionAcute cellular rejectionT cellsHeart transplantationSmall extracellular vesiclesCellular rejectionAntibody-mediated rejectionEndomyocardial biopsy samplesHeart transplant patientsWilcoxon rank sum testExtracellular vesiclesClinical heart transplantationRank sum testCardiac allograftsExternal validation studyCTnT proteinTransplant patientsPostoperative dayDiagnostic accuracyBiopsy samplesSuccessful treatmentCargo of small extracellular vesiclesTransplantationPatientsDiagnostic potentialB-cell extracellular vesicle biomarkers for detection of antibody-mediated rejection in lung transplantation
Korutla L, Bai Y, DeMarais N, Talapaneni S, Hu R, Burke V, Kreisel D, Vallabhajosyula P. B-cell extracellular vesicle biomarkers for detection of antibody-mediated rejection in lung transplantation. JTCVS Techniques 2025, 31: 224-232. PMID: 40641786, PMCID: PMC12237748, DOI: 10.1016/j.xjtc.2025.03.005.Peer-Reviewed Original ResearchDirect perfusion for mesenteric ischaemia in acute type A aortic dissection: a glimpse into the mist of uncertainties
Ma W, Gao X, Ni B, Vallabhajosyula P. Direct perfusion for mesenteric ischaemia in acute type A aortic dissection: a glimpse into the mist of uncertainties. European Journal Of Cardio-Thoracic Surgery 2025, 67: ezaf044. PMID: 39951261, DOI: 10.1093/ejcts/ezaf044.Peer-Reviewed Original ResearchThe healthcare burden of isolated aortic valve insufficiency
Sultan I, Ryan M, Gunnarsson C, Heidrich N, Vallabhajosyula P. The healthcare burden of isolated aortic valve insufficiency. Scientific Reports 2025, 15: 4771. PMID: 39922868, PMCID: PMC11807181, DOI: 10.1038/s41598-025-87179-1.Peer-Reviewed Original ResearchConceptsHealthcare utilizationSAI patientsAnnual healthcare utilizationHealth care databasesYears post-diagnosisEstimate healthcare utilizationHome healthBaseline periodCare databaseMonths of continuous enrollmentCox proportional modelsPost-diagnosisAAI patientsMeasured outcomesHealthcareAI claimEstimate mortalityHealthcare burdenContinuous enrollmentExclusion criteriaUS patientsDiagnosis of aortic stenosisAortic valve insufficiencyProportional modelAnnual costSex differences in patterns of cardiovascular referral in patients with Marfan, Ehlers-Danlos, and Loeys-Dietz syndromes
Waldron C, Nasir A, Wang K, Chou A, Erez E, Vallabhajosyula P, Assi R. Sex differences in patterns of cardiovascular referral in patients with Marfan, Ehlers-Danlos, and Loeys-Dietz syndromes. JTCVS Open 2025, 24: 1-15. PMID: 40309713, PMCID: PMC12039419, DOI: 10.1016/j.xjon.2025.01.002.Peer-Reviewed Original ResearchCardiothoracic surgeryConnective tissue diseaseFemale patientsEhlers-DanlosAortic pathologyLoeys-DietzCardiovascular medicineMale patientsTissue diseaseRetrospective review of patientsReview of patientsLoeys-Dietz syndromeDiagnosis of MFSReferral ratesSex differencesMFS patientsRetrospective reviewAortic diseaseRate of referralSurgeryPatientsMedical recordsClinical diagnosisElectronic medical recordsObjective diagnosis
Clinical Trials
Current Trials
Anticoagulation for New-Onset Post-Operative Atrial Fibrillation after Coronary Artery Bypass Surgery
HIC ID2000027269RoleSub InvestigatorPrimary Completion Date12/31/2022Recruiting ParticipantsGenderBothAge18+ yearsCorMatrix Cor TRICUSPID ECM Valve Replacement Study
HIC ID2000028726RoleSub InvestigatorPrimary Completion Date12/31/2022Recruiting ParticipantsGenderBothAge1 year - 70 years
Clinical Care
Overview
Prashanth Vallabhajosyula, MD, MS, is surgical director of the Aortic Institute, which is part of the Yale New Haven Health Heart & Vascular Center. He is a cardiothoracic surgeon who performs the entire spectrum of heart surgeries, including coronary artery bypass grafting, valve surgery, and heart transplantation. His primary focus is endovascular and open surgeries of the aorta, and hybrid surgeries that combine the two.
Dr. Vallabhajosyula is skilled in complex procedures, such as thoracic endovascular aortic repair (TEVAR), a minimally invasive procedure that uses a stent graft to reinforce an aneurysm and prevent it from bursting. He also introduced pulmonary thromboendarterectomy to Yale. The latter is a highly specialized surgical procedure that removes chronic blood clots from the arteries in the lung.
As director of the Aortic Institute, Dr. Vallabhajosyula says a large part of his work is coordinating and integrating a variety of services. “A multidisciplinary approach is important, because what we can offer patients for a particular aortic disease is rapidly evolving,” Dr. Vallabhajosyula says, explaining this that can change how different specialists can contribute to a case. “People draw arbitrary lines around what vascular surgery will do, what cardiology will do, and what a heart surgeon will do, but patients don't always understand that or come in that way. Our goal is to integrate all the services and provide a single place for patients to come if they have an aortic problem.”
Dr. Vallabhajosyula says one thing that led him to medicine was a lifelong love of science. “When I was in sixth grade, growing up in India, my mother took me to a medical university for a show they had where kids from elementary school could see human bones,” he says. “There was an anatomy lab going on, and I snuck into it and saw some cadavers. I wasn’t scared at all. I was fascinated by the human body and with seeing all these parts, and truly understanding that there is such an organic basis to everything that we do. I was hooked from the very beginning.”
He also enjoyed any experience that involved helping people, which led to his decision to be a surgeon. “Patient care is a phenomenal thing,” he says. While patients and their families are grateful for what he can do for them, he also gets a lot back, he adds. “I really try to understand patients for who they are and where they are coming from. If you approach patient care that way, you come to realize that we're all pretty similar. I think that’s made me a better person,” he says.
Clinical Specialties
Fact Sheets
Aortic Aneurysm
Learn More on Yale MedicineEndovascular Debranching Aortic Repair for Thoracoabdominal Aortic Aneurysms
Learn More on Yale MedicinePulmonary Thromboendarterectomy
Learn More on Yale MedicineReoperative Heart Surgery
Learn More on Yale Medicine
Board Certifications
Thoracic & Cardiac Surgery
- Certification Organization
- AB of Thoracic Surgery
- Original Certification Date
- 2012
Yale Medicine News
News
News
- June 26, 2025
For Heart Transplant Patients, Blood Test May Detect Rejection Earlier and More Easily
- March 11, 2025Source: New Haven Register
How Yale doctors used a balloon in surgery to treat heart issue
- January 14, 2025
Yale Team Performs State’s First BATMAN Procedure
- June 04, 2024
Surgery Research Presented at Blavatnik Fund for Innovation at Yale
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Cardiac Surgery
PO Box 208062
New Haven, CT 06520-8062
United States
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