Britt Tonnessen, MD
Associate Professor of Surgery (Vascular)Cards
About
Research
Publications
2026
49. Tibial Artery Stenting In The VQI Database
Wells N, Slade M, Huang Y, Cardella J, Tonnessen B, Guzman R, Chaar C. 49. Tibial Artery Stenting In The VQI Database. Annals Of Vascular Surgery 2026, 126: 254-255. DOI: 10.1016/j.avsg.2025.11.104.Peer-Reviewed Original ResearchFrailty is associated with increased risk for upper arm arteriovenous fistula abandonment
Li J, Kumi M, Loh S, Aboian E, Ochoa Chaar C, Tonnessen B. Frailty is associated with increased risk for upper arm arteriovenous fistula abandonment. Journal Of Vascular Surgery 2026 PMID: 41866096, DOI: 10.1016/j.jvs.2026.03.436.Peer-Reviewed Original ResearchAutogenous arteriovenous fistulaComposite poor outcomeRetrospective chart reviewPoor outcomeFive-factor modified frailty indexMFI-5Retrospective chart review of patientsMaturation outcomesChart review of patientsAutogenous arteriovenous fistula creationAcademic tertiary referral centerEnd-stage renal disease patientsReview of patientsTertiary referral centerNon-maturationHigher frailtyMultivariate logistic regression modelSevere frailtyAVF abandonmentChronic obstructive pulmonary diseaseRenal disease patientsObstructive pulmonary diseaseImpact of frailtyFistula abandonmentUnassisted maturationSmoking cessation after Lower Extremity Revascularization in the Vascular Quality Initiative
Carter W, Schwartz A, Zwibelman H, Aboian E, Tonnessen B, Cardella J, Guzman R, Ochoa Chaar C. Smoking cessation after Lower Extremity Revascularization in the Vascular Quality Initiative. Journal Of Vascular Surgery 2026 PMID: 41825793, DOI: 10.1016/j.jvs.2026.03.006.Peer-Reviewed Original ResearchLower extremity bypassLower extremity revascularizationPeripheral vascular interventionsSmoking cessation effortsSmoking cessationCessation effortsPeripheral arterial diseaseCurrent smokersDisadvantaged neighborhoodsEndovascular lower extremity revascularizationSocioeconomically disadvantaged neighborhoodsHigher rates of adverse outcomesInfrainguinal bypassExtremity revascularizationProportion of smokersSurvival analysisRates of adverse outcomesLong-term outcomesVascular Quality InitiativePercentage of active smokersSociety for Vascular SurgeryLower-extremity revascularizationStop smokingHigher RatesSmoking statusThe Best of 2025 - Peripheral and Splanchnic Aneurysms and Mesenteric Vascular Disease
Tonnessen B. The Best of 2025 - Peripheral and Splanchnic Aneurysms and Mesenteric Vascular Disease. Journal Of Vascular Surgery Cases And Innovative Techniques 2026, 102231. DOI: 10.1016/j.jvscit.2026.102231.Peer-Reviewed Original ResearchInfrainguinal Bypass with Alternative Conduits in Diabetic Patients with Chronic Limb-Threatening Ischemia
Williams Z, Pinto-Rodriguez P, Zwibelman H, Strosberg D, Aboian E, Tonnessen B, Ochoa Chaar C, Cardella J. Infrainguinal Bypass with Alternative Conduits in Diabetic Patients with Chronic Limb-Threatening Ischemia. Journal Of Vascular Surgery 2026 PMID: 41654038, DOI: 10.1016/j.jvs.2026.01.037.Peer-Reviewed Original ResearchChronic limb-threatening ischemiaGreat saphenous veinGreat saphenous vein groupsDiabetes mellitusAmputation-free survivalInfrainguinal bypassLimb-threatening ischemiaAlternative conduitVascular Quality Initiative databaseRates of amputation-free survivalLong-term freedomOutcomes of patientsKaplan-Meier analysisAmputation-free survival rateAutologous great saphenous veinVascular Quality InitiativeAcceptable limb salvageAdverse limb eventsMultivariate regression analysisPerioperative mortalityInferior outcomesSurgical revascularizationBaseline characteristicsGraft occlusionKaplan-Meier
2025
Smoking cessation duration is associated with the risk of amputation after revascularization for chronic limb-threatening ischemia Presented at the Annual Spring Meeting of the Vascular and Endovascular Surgery Society, New Orleans, LA, June 4, 2025.
Carter W, Schwartz A, Sumpio B, Strosberg D, Tonnessen B, Cardella J, Guzman R, Chaar C. Smoking cessation duration is associated with the risk of amputation after revascularization for chronic limb-threatening ischemia Presented at the Annual Spring Meeting of the Vascular and Endovascular Surgery Society, New Orleans, LA, June 4, 2025. European Journal Of Vascular And Endovascular Surgery 2025, 70: e308-e309. DOI: 10.1016/j.ejvs.2025.11.022.Peer-Reviewed Original ResearchLetter regarding “Vascular Procedures Are Increasingly Performed By Women”
Nasir A, Loh S, Tonnessen B. Letter regarding “Vascular Procedures Are Increasingly Performed By Women”. Journal Of Vascular Surgery 2025, 82: 1917-1918. PMID: 41110861, DOI: 10.1016/j.jvs.2025.07.039.Peer-Reviewed Original ResearchAssociation of 5-Factor Modified Frailty Index With Arteriovenous Fistula Maturation Outcomes
Li J, Kumi M, Loh S, Aboian E, Chaar C, Tonnessen B. Association of 5-Factor Modified Frailty Index With Arteriovenous Fistula Maturation Outcomes. Journal Of Vascular Surgery 2025, 82: e110-e111. DOI: 10.1016/j.jvs.2025.06.105.Peer-Reviewed Original ResearchPreoperative smoking cessation impacts presentation and neurologic outcomes of carotid endarterectomy
Schwartz A, Carter W, Tonnessen B, Arhuidese I, Cardella J, Dardik A, Ochoa Chaar C. Preoperative smoking cessation impacts presentation and neurologic outcomes of carotid endarterectomy. Journal Of Vascular Surgery 2025, 83: 461-470.e6. PMID: 40992521, DOI: 10.1016/j.jvs.2025.09.032.Peer-Reviewed Original ResearchVascular Quality InitiativeTransient ischemic attackSmoking cessation durationLong-term outcomesChronic obstructive pulmonary diseaseCessation durationCarotid endarterectomyNeurological outcomeNeurological eventsFollow-upFormer smokersCurrent smokersGroup of former smokersStatistically significant risk reductionDuration of smoking cessationSmoking cessationKaplan-Meier analysisOutcomes of carotid endarterectomyIpsilateral neurologic eventsSignificant risk reductionChronic kidney diseaseDuration of quittingAssociated with outcomeObstructive pulmonary diseasePerioperative mortalitySmoking cessation duration is associated with the risk of amputation after revascularization for chronic limb-threatening ischemia
Carter W, Schwartz A, Sumpio B, Strosberg D, Tonnessen B, Cardella J, Guzman R, Ochoa Chaar C. Smoking cessation duration is associated with the risk of amputation after revascularization for chronic limb-threatening ischemia. Journal Of Vascular Surgery 2025, 83: 256-264.e2. PMID: 40912340, DOI: 10.1016/j.jvs.2025.08.037.Peer-Reviewed Original ResearchChronic limb-threatening ischemiaCurrent smokersFormer smokersSmoking cessationMajor amputationLower extremity revascularizationCessation durationLimb-threatening ischemiaDuration of smoking cessationQuality InitiativeStandardized follow-up periodsRisk of amputationSmoking cessation durationVascular Quality InitiativeFormer smokingCurrent smokingPerioperative outcomesBlack racePeripheral vascular interventionsAmputationSmokingEnd-stage renal diseaseMonths of surgeryKaplan-Meier analysisFollow-up period
Clinical Trials
Current Trials
Drug-Eluting Registry: Real-World Treatment of Lesions in the Peripheral Vasculature (ELEGANCE)
IRB ID2000031921REGRoleSub InvestigatorPrimary Completion Date01/01/2028Recruiting ParticipantsGenderBothAge18+ years
Academic Achievements & Community Involvement
Clinical Care
Overview
Britt H. Tonnessen, MD, FACS is a vascular surgeon who treats patients with a variety of conditions that affect the arteries and veins, including carotid disease, peripheral vascular disease, venous disease, and thoracic outlet syndrome. As a vascular expert, she cares for older patients with hardening of the arteries, as well as younger patients who may develop different types of problems, such as varicose veins or chronic wounds on the legs.
Dr. Tonnessen says the decision to become a doctor came naturally to her. “I wanted to help people. It's as simple as that.” She was inspired by excellent mentorship and early exposure to vascular surgery as a medical student at the Mayo Clinic in the 1990s.
She ultimately became a vascular surgeon for three reasons. “One, you have continuity of patient care over time—these are patients you follow for many years. Two, the science behind the work I do is logical and interesting. Three, minimally invasive “endovascular” techniques have really revolutionized the field," she says. "When I was an intern, all of the patients had large incisions on their abdomens. Traditional surgery is still appropriate for some, but now we can do many procedures through a small puncture in the groin or even in the foot.”
Vascular surgery can be demanding, but there are many rewards, Dr. Tonnessen says. “It's so gratifying for me to get a cold foot back to a warm foot (because circulation has improved), to relieve pain for someone whose leg has been swollen for years, or to repair someone's potentially life-threatening aneurysm through a couple of small groin punctures," she says. "In medicine, we're never looking for a thank you, but the satisfaction from patients whose lives were transformed has made it all worthwhile.”
Clinical Specialties
Fact Sheets
Vascular Surgery
Learn More on Yale MedicineThoracic Outlet Syndrome
Learn More on Yale MedicinePeripheral Vascular Disease (PVD)
Learn More on Yale MedicinePreparing for Dialysis (AV Fistula)
Learn More on Yale Medicine
Board Certifications
Vascular Surgery
- Certification Organization
- AB of Surgery
- Original Certification Date
- 2008
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Vascular Surgery & Endovascular Therapy
330 Cedar Street, Boardman 204
New Haven, CT 06510
United States
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