STS Ascending Aorta & Root Surgery Operative Risk Calculator

Terms of Service

Please read these Terms and Conditions carefully before clicking on the button at the end of this page. These are the Terms and Conditions upon which you will be permitted to enter and use The Society of Thoracic Surgeons' Online Risk Calculator and any of its variants (collectively, the "Risk Calculator"). By clicking on the "Accept" button at the end of this page, you are agreeing to become bound by these Terms and Conditions. If you do not agree to these Terms and Conditions, click on the "Decline" button below.

1. Ownership

The Risk Calculator is wholly owned by The Society of Thoracic Surgeons (STS).

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The Risk Calculator does not collect personally identifiable information from users, such as name, physical address, email address, or individually identifiable health information. The Risk Calculator may collect limited non-personally identifying information your browser makes available whenever you visit a Web site. This log information may include your Internet Protocol address, browser type, browser language, the date and time of your query and one or more "cookies" that may uniquely identify your browser. A "cookie" is a small file containing a string of characters that is sent to your computer when you visit a website. We may use this information to operate, develop and improve the Risk Calculator. We do not extract personal information in this process nor do we provide this information to third parties. We also do not contact you based on information in your cookie file.

Please note this Privacy Policy may change from time to time. We expect most such changes to be minor, but there may be changes that are more significant. Regardless, we will post those changes on this page and, if the changes are significant, we will also provide a more prominent notice.

7. General

These Terms and Conditions constitute the entire agreement between the parties user and STS with respect to the Risk Calculator and supersede and replace all prior or contemporaneous understandings or agreements, written or oral, regarding such subject matter. Any waiver of any provision of the Terms and Conditions will be effective only if in writing and signed by STS. These Terms and Conditions shall be governed and interpreted in accordance with the laws of the State of Illinois, applicable to contracts made and fully performed therein. If any provision of these Terms and Conditions is held by a court of competent jurisdiction to be contrary to law, that provision will be enforced to the maximum extent permissible and the remaining provisions will remain in full force and effect. STS may modify these Terms and Conditions without notice.

Calculator - Ascending Aorta & Root

Adult Cardiac Surgery

Short-Term Risk Calculator

Adult Cardiac Surgery

Surgery Type

Planned Surgery*

Ascending Aorta Only

Ascending Aorta + AVR

Bentall (AVR+Root+Asc)

Valve Sparing Root + Ascending Aorta

Planned Circulatory Arrest^*

Aorta Disease

Family Hx^*

Arch Anomalies^*

Patient Genetic Hx^*

Chronic Dissection (≥ 90 days)

Surgery Incidence^*

Surgical Priority^*

Previous CABG^*

Patent IMA Bypass Graft^*

Previous Other Cardiac Interventions^*

Previous PCI^*

Previous Transcatheter Valve Intervention

Demographics

Sex*

Age*

Value out of usual range, disregard if correct.

Height^*

Weight^*

Value out of usual range, disregard if correct.

Race/Ethnicity^*

Payor/Ins.^*

Laboratory Values

Creatinine^*

Value out of usual range, disregard if correct.

Hematocrit^*

Value out of usual range, disregard if correct.

WBC Count^*

Value out of usual range, disregard if correct.

Platelet Count^*

Value out of usual range, disregard if correct.

Total Albumin^*

Value out of usual range, disregard if correct.

Total Bilirubin^*

Value out of usual range, disregard if correct.

INR^*

Value out of usual range, disregard if correct.

Calculations

BMI (kg/m²)

BSA (m²)

MELD Score

Preoperative Medications

ACE Inhibitors/ARBs ≤ 48 hrs

GP IIb/IIIa Inhibitor ≤ 24 hrs

Inotropes ≤ 48 hrs^†

Steroids ≤ 24 hrs^*

ADP Inhibitors ≤ 5 days

ADP Inhib. Discontinued (when, days)

Coumadin ≤5 days

Beta Blocker ≤24 hrs*

Coronary Artery Disease

Prim. Coronary Symptom

Please answer Timing of MI field below

Myocardial Infarction-when

No. of Diseased Vessels^*

Left Main Stenosis ≥ 50%

Proximal LAD Stenosis ≥ 70%

Valve Disease

Aortic Stenosis^*

Mitral Stenosis^*

Aortic Root Abscess

Aortic Regurgitation

Mitral Regurgitation

Tricuspid Regurgitation^*

Arrhythmia

Atrial Fibrillation^*

Atrial Fib. Type^*

Atrial Flutter^*

V. Tach / V. Fib

Sick Sinus Syn.

2ⁿᵈ Degree Block

3ʳᵈ Degree Block

* Risk Model Variable
† Selecting variable excludes from Risk Model

Clinical Summary
About

Simulated Patient Summary

Material to be added soon

This application was developed and implemented at the STS Research and Analytic Center;

Last Updated: April 18, 2025 (App Version: 1.0.0)

Contact the STS Research and Analytic Center

Next Generation Online STS Adult Cardiac Surgery Risk Calculator

Terms of Service

Calculator - Ascending Aorta & Root Adult Cardiac Surgery Reset

Calculator - Ascending Aorta & Root

Adult Cardiac Surgery

Short-Term Risk Calculator

Adult Cardiac Surgery

Surgery Type

Ascending Aorta SurgeryAorta Disease & Surgery Detail

Aorta Disease

Surgery Incidence*

Surgical Priority*

Previous Valve Surgery (Select all that apply)

Aortic Valve

Mitral Valve

Tricuspid Valve

Pulmonic Valve

Previous Other Cardiac Interventions*

Previous PCI*

Previous Transcatheter Valve Intervention

Demographics

Sex*

Age*

Height*

Weight*

Value out of usual range, disregard if correct.

Race/Ethnicity*

Payor/Ins.*

Laboratory Values

Creatinine*

Hematocrit*

WBC Count*

Platelet Count*

Total Albumin*

Total Bilirubin*

INR*

Calculations

BMI (kg/m²)

BSA (m²)

MELD Score

Preoperative Medications

ADP Inhib. Discontinued (when, days)

Risk Factors/Comorbidities

Diabetes*

Endocarditis†

Illicit Drug Use*

Alcohol Use*

Tobacco Use*

Pulmonary

Chronic Lung Disease*

Vascular

Cerebrovascular Dis.*

Cardiac Status

Heart Failure*

NYHA Classification*

PreOp Mech Circ Support†

Ejection Fraction * (%)

Coronary Artery Disease

Prim. Coronary Symptom

Please answer Timing of MI field below

Myocardial Infarction-when

No. of Diseased Vessels*

Valve Disease

Aortic Regurgitation

Mitral Regurgitation

Tricuspid Regurgitation*

Arrhythmia

Atrial Fibrillation*

Atrial Fib. Type*

Atrial Flutter*

V. Tach / V. Fib

Sick Sinus Syn.

2ⁿᵈ Degree Block

3ʳᵈ Degree Block

Simulated Patient Summary

Material to be added soon

Calculator - Ascending Aorta & Root

Adult Cardiac Surgery

Ascending Aorta Surgery
Aorta Disease & Surgery Detail

Surgery Incidence^*

Surgical Priority^*

Previous Valve Surgery
(Select all that apply)

Previous Other Cardiac Interventions^*

Previous PCI^*

Height^*

Weight^*

Race/Ethnicity^*

Payor/Ins.^*

Creatinine^*

Hematocrit^*

WBC Count^*

Platelet Count^*

Total Albumin^*

Total Bilirubin^*

INR^*

Diabetes^*

Endocarditis^†

Illicit Drug Use^*

Alcohol Use^*

Tobacco Use^*

Chronic Lung Disease^*

Cerebrovascular Dis.^*

Heart Failure^*

NYHA Classification^*

PreOp Mech Circ Support^†

Ejection Fraction ^* (%)

No. of Diseased Vessels^*

Tricuspid Regurgitation^*

Atrial Fibrillation^*

Atrial Fib. Type^*

Atrial Flutter^*