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Myocardial Injury After Non-cardiac SurgeryEnhanceMINSNCT06474754

Submaximal Cardiopulmonary Exercise Testing for Detection of Myocardial Injury After Noncardiac Surgery

A study testing High-sensitivity troponin, serum, Submaximal Cardiopulmonary Exercise Testing and Duke Activity Status Index in people with Myocardial Injury After Non-cardiac Surgery and Submaximal Exercise Performance, run by Yale University at 1 site in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

The goal of this clinical trial is to learn whether physicians can associate evidence of myocardial injury after surgery with findings obtained from submaximal cardiopulmonary exercise testing. Read more about this study

Who is it for?
Ages 45 years and olderHealthy volunteers can take part
What is being tested?
High-sensitivity troponin, serum, Submaximal Cardiopulmonary Exercise Testing and Duke Activity Status Index
Could I receive a placebo?
No, everyone receives an active treatment
How many people
10 participants
Where
1 siteUnited States
Study dates
30 Mar 2025to 30 Apr 2026
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 45 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Provision of signed and dated informed consent form.
  • Stated willingness to comply with all study procedures and availability for the duration of the study.
  • Biological male or female, aged 45 years or older.
  • In good general health as evidenced by medical history or diagnosed with metabolic equivalents (self-reported ability to climb 1 flight of stairs).
  • Revised Cardiac Risk Index less than or equal to three.
  • Willing to accept phlebotomy on operative day 0, 1, 2, and 3, as part of usual care.
  • Scheduled for moderate to high-risk elective non-cardiac surgery with an expected 24-72 hour stay within 60 days of enrollment in the study.

Who cannot join

  • Inability to perform study procedures as defined by inability to achieve greater than 4 metabolic equivalents (cannot climb 1 flight of stairs reliably).
  • Pregnancy or lactation.
  • Inability to give independent informed consent.
  • Revised cardiac risk index greater than 3.
  • Recent myocardial infarction (less than 6 weeks).
  • Recent anginal symptoms (stable or unstable) within past 6 months.
Show all 20Show fewer
  • Recent admission or endorsement for congestive heart failure within 6 months
  • Recent admission or endorsement for syncope within 6 months.
  • Symptomatic tachy- or bradyarrhythmia (supraventricular tachcardia, ventricular tachycardia with symptoms of intermittent dizziness, pre- syncopal events)
  • Uncorrected severe valvular heart disease (severe aortic, tricuspid or mitral stenosis)
  • Acute pulmonary embolism or deep vein thrombosis (within past 6 months)
  • Uncontrolled pulmonary edema
  • Uncontrolled symptomatic cardiac arrhythmias.
  • Active endocarditis
  • Active myocarditis or pericarditis
  • Active wheezing or recent exacerbation of chronic obstructive pulmonary disease admission in past 6 months.
  • Inability to perform components of the SHAPE test (severe hip flexion limitation, severe osteoarthritis of knee or hip, limb immobilization, ambulation requires cane or crutches, baseline balance irregularities.
  • Diagnosis of symptomatic vertigo
  • Known allergic reactions to components of the SHAPE medical system apparatus disposable mouthpiece.
  • Active enrollment in an interventional clinical trial within the enrollment period of the study.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Yale University; Yale New Haven Hospital

    New Haven, Connecticut, 06510

Other trials in United States

About this study

Official title: Enhancing Precise Perioperative Risk Surveillance: Validation of Submaximal Cardiopulmonary Exercise Testing to Usual Care for Detection of Myocardial Injury After Noncardiac Surgery

The goal of this clinical trial is to learn whether physicians can associate evidence of myocardial injury after surgery with findings obtained from submaximal cardiopulmonary exercise testing. The main questions are:

Is detection of postoperative myocardial injury with submaximal cardiopulmonary exercise testing superior to using usual care?

Read more

And which submaximal cardiopulmonary exercise testing measure is better?

Participants will undergo evaluation with a short submaximal cardiopulmonary exercise test, then undergo surgery. Myocardial injury will be measured on postoperative days 0, 1, 2, and 3 (during and up to 3 days after surgery). These results will analyzed by comparing it to findings from the submaximal cardiopulmonary exercise test.

If there is a relationship, this will help anesthesiologists and surgeons assign certain treatments that may reduce the risk of developing myocardial injury after surgery.

Read the detailed description

Among the 50 million US adults undergo non-cardiac surgery each year, an estimated 1.4-3.9% of patients experience perioperative myocardial infarction with another 6-18% showing evidence of myocardial injury. These cardiac insults, known as myocardial injury after noncardiac surgery (MINS) are associated with a 2.7-3.2 fold higher odds of 30-day mortality, 2.2 fold higher odds of nonfatal myocardial infarction (MI), 1.55 fold increase in 30-day congestive heart failure events, and 5.2 times higher risk of stroke, highlighting the importance of predicting and treating their occurrence. MINS is treatable, and potentially preventable, by a combination of tailored intraoperative monitoring and appropriate post-operative care.

The current approach to preoperative risk stratification is predominately derived from patient-reported functional capacity associated with history, physical examination and select laboratory investigations. This approach results in significant healthcare worker time and cost expenditures, without improved perioperative outcomes. In contrast, a technological approach utilizing conventional cardiopulmonary exercise testing (CPET) has been shown to improve individualized identification of high-risk patients prior to surgery. Widespread cardiopulmonary exercise test adoption in the perioperative setting, however, has been limited by cost, technical requirements, and time investment despite its documented utility in cardiopulmonary risk assessment. However, brief submaximal cardiopulmonary exercise testing (smCPET) addresses the limitations of conventional CPET including low cost, low time investment, small footprint, and ease of operator efficiency. In our pilot (under review), we demonstrated the feasibility and performance of implementing smCPET within a high-volume pre-surgical evaluation clinic.

This proposal seeks to continue work in characterizing smCPET and its role in individualized preoperative risk identification. The aim of this study proposal is to validate two clinically relevant questions: 1) Are smCPET measures superior to usual care (Duke Activity Status Index) in patients undergoing moderate to high-risk noncardiac surgery and 2) to determine which smCPET measure is more sensitive to MINS as described by abnormalities in postoperative high-sensitivity troponin measurements.

Using a smCPET-guided approach, this study seeks to characterize its value in identifying high-risk patients for MINS, provide further validation of smCPET utility as a preoperative risk stratification approach, and preliminarily identify smCPET measures with highest association with MINS.

If validated, this would provide the foundation for a smCPET-guided clinical decision support system of preoperative identification and perioperative monitoring that could 1) enhance patient outcomes by providing early prediction and detection of MINS and 2) characterize a research methodology to stratify participants for further research in assessing perioperative strategies to reduce MINS. These findings will provide one of the first examples of quantitative and individualized preoperative risk identification methods for a common and deleterious perioperative outcome.

Being tested
High-sensitivity troponin, serum, Submaximal Cardiopulmonary Exercise Testing, Duke Activity Status Index
Keywords
submaximal cardiopulmonary exercise testing, MINS, myocardial injury after noncardiac surgery, perioperative myocardial injury, anesthesiology

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • High-sensitivity troponin, serumDiagnostic test

    Also called HST

    A serum derived measure of myocardial injury. Threshold value of 14ng/L.

  • Submaximal Cardiopulmonary Exercise TestingDiagnostic test

    Also called smCPET

    FDA-approved device uses breath by breath sampling during calibration and exercise challenge. Analysis is performed using a differential pressure pneumotach method for volume calibration and measurement, an infrared sensor for CO2 and a paramagnetic sensor for O2 measurements. Automated calibration using a calibration gas mixture (15.6% O2/5% CO2) is performed at regular intervals. The Shape II calculations used to differentiate causes of exertional dyspnea are Artificial Intelligence (AI) based algorithms and measurements have been previously validated to conventional cardiopulmonary exercise testing methods. Brief smCPET is comprised of a 2-minute calibration phase, 3 minutes of graded exercise using a stair-step and a 1 minute recovery phase for a total of 6 minutes. An instant report is then generated.

  • Duke Activity Status IndexDiagnostic test

    Also called DASI

    A validated measure of preoperative functional capacity which will be utilized to cross-validate smCPET peak VO2. Low DASI score has been found to estimate peak oxygen uptake (VO2), predict MINS, myocardial infarction, and inducible myocardial ischemia on myocardial perfusion scintigraphy.

Study groups in NCT06474754
Study groupRoleWhat they receive
Submaximal cardiopulmonary exercise testingExperimentalSingle arm design; selected participants will receive both usual care (Duke Activity Status Index) and submaximal cardiopulmonary exercise testing. All participants will receive high-sensitivity troponin measurements on operative day 1 and postoperative day 1,2,3
Receives: Diagnostic Test: High-sensitivity troponin, serum; Diagnostic Test: Submaximal Cardiopulmonary Exercise Testing; Diagnostic Test: Duke Activity Status Index

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. MINS

    Myocardial Injury after noncardiac surgery. Measurement: High-Sensitivity Troponin assay with an abnormal value defined as 14 nanograms per liter or greater.

    Measured: Operative Day 0, Postoperative Day 1, 2 or 3

Secondary outcomes (3)
  1. 30-day Major Adverse Cardiovascular Events

    30-day recorded events of atrial fibrillation, angina, stroke, myocardial infarction, congestive heart failure as defined by International Classification of Disease (Version 10) coding.

    Measured: Postoperative Day 1 through Postoperative Day 30

  2. Length of Stay

    Measurement of patient inpatient status from operative day 0 through physical discharge from the hospital.

    Measured: From operative day 0 through hospital discharge up to postoperative day 180

  3. Readmission

    Readmission of any type from the time of surgical procedure discharge through postoperative day 60.

    Measured: Postoperative Day One through Postoperative Day 60.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted26 Jun 2024
  2. Study start30 Mar 2025
  3. Primary completion30 Apr 2026
  4. Study completion30 Apr 2026

Why it stopped: Funding limitations.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Diagnosis
Allocation
Not applicable
Intervention model
Single group
Model description
Single-blinded Phase IV diagnostic clinical trial study design
Masking
None (open label)
Enrolment
10 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06474754
Sponsor's protocol ID
2000037991
Acronym
EnhanceMINS
Status last verified
May 2026
First submitted
14 Jun 2024
Last updated
22 May 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
Yes
Individual data sharing
Yes: The study protocol, statistical analysis plan, informed consent and human study record will be provided. A deidentified dataset will be uploaded to the data sharing repository NIBIB physionet website.

Publications

  • Snowden CP, Prentis JM, Anderson HL, Roberts DR, Randles D, Renton M, Manas DM. Submaximal cardiopulmonary exercise testing predicts complications and hospital length of stay in patients undergoing major elective surgery. Ann Surg. 2010 Mar;251(3):535-41. doi: 10.1097/SLA.0b013e3181cf811d.

    PubMed 20134313
  • Le Manach Y, Perel A, Coriat P, Godet G, Bertrand M, Riou B. Early and delayed myocardial infarction after abdominal aortic surgery. Anesthesiology. 2005 May;102(5):885-91. doi: 10.1097/00000542-200505000-00004.

    PubMed 15851872
  • Devereaux PJ, Goldman L, Cook DJ, Gilbert K, Leslie K, Guyatt GH. Perioperative cardiac events in patients undergoing noncardiac surgery: a review of the magnitude of the problem, the pathophysiology of the events and methods to estimate and communicate risk. CMAJ. 2005 Sep 13;173(6):627-34. doi: 10.1503/cmaj.050011.

    PubMed 16157727
  • Patel AY, Eagle KA, Vaishnava P. Cardiac risk of noncardiac surgery. J Am Coll Cardiol. 2015 Nov 10;66(19):2140-2148. doi: 10.1016/j.jacc.2015.09.026.

    PubMed 26541926

Questions about this trial

What is this clinical trial studying?

A study testing High-sensitivity troponin, serum, Submaximal Cardiopulmonary Exercise Testing and Duke Activity Status Index in people with Myocardial Injury After Non-cardiac Surgery and Submaximal Exercise Performance, run by Yale University at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 20 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 22 May 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study was stopped early (reason given: Funding limitations.). Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

MINS (time frame: Operative Day 0, Postoperative Day 1, 2 or 3). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06474754, which also lists 4 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 22 May 2026.

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