Modern healthcare requires a refined approach to preoperative cardiac risk assessment to ensure patient safety. High-risk patients undergoing major noncardiac surgery often face significant perioperative challenges. Consequently, clinicians must accurately stratify risks to optimize clinical outcomes. A recent narrative review explores the integration of natriuretic peptides with the Duke Activity Status Index (DASI) for this purpose. Furthermore, this dual approach provides a comprehensive view of a patient’s cardiac reserve. It achieves this by merging objective biological data with functional performance.

Role of Biomarkers in Cardiac Reserve

Natriuretic peptides, specifically BNP and NT-proBNP, serve as powerful indicators of myocardial stress. When the heart experiences pressure or volume overload, it releases these biomarkers into the bloodstream. Therefore, elevated levels preoperatively can predict adverse events such as myocardial injury or vascular death. Studies like the VISION trial have already established clear thresholds for these markers. However, biomarkers alone may not reflect a patient's physical stamina or daily activity limits. Specifically, they provide a static measure of heart strain without showing how the heart performs under stress.

Utilizing the DASI for Functional Status

The Duke Activity Status Index (DASI) is a validated tool for measuring self-reported functional capacity. Patients answer a series of questions about their ability to perform daily tasks like climbing stairs or housework. Specifically, a DASI score below 34 indicates a significant risk of postoperative complications. Because the questionnaire is simple to administer, it fits easily into a standard preoperative workflow. Additionally, it adds a subjective layer of health assessment that blood tests might miss. Consequently, clinicians can better understand a patient's actual tolerance for the physical stress of surgery.

Benefits of Integrated Preoperative Cardiac Risk Assessment

Combining these two measures creates a more robust predictive model. Biomarkers offer a snapshot of subclinical cardiac dysfunction. Simultaneously, the DASI reflects how well the body compensates during physical exertion. This integration allows surgeons and anesthesiologists to identify high-risk individuals who might otherwise appear stable. Moreover, this combined strategy facilitates the implementation of prehabilitation programs. These programs help patients improve their physical condition before undergoing surgery. Ultimately, this proactive approach reduces the likelihood of poor outcomes.

Practical Implementation and Optimization

Clinicians should time these assessments carefully during the preoperative phase. Interpretation involves looking at both the biomarker thresholds and the functional score. If both indicators suggest high risk, then optimization strategies become mandatory. These strategies might include adjusting cardiovascular medications or recommending supervised exercise. Overall, this narrative review positions the natriuretic peptide/DASI approach as a promising standard for modern perioperative care. Thus, it offers a practical tool to improve patient safety and surgical success rates.

Frequently Asked Questions

What is the clinical significance of a DASI score below 34?

A DASI score below 34 suggests that a patient has limited functional capacity. This threshold correlates with a higher risk of 30-day myocardial injury and other major postoperative complications.

How do natriuretic peptides help in surgical planning?

Natriuretic peptides like NT-proBNP identify subclinical heart stress. High levels alert the surgical team to potential cardiac instability, allowing for better resource allocation and closer monitoring.

Disclaimer: This content is for informational and educational purposes only. It does not constitute professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition. Refer to the latest local and national guidelines for clinical practice.

References

Senussi Testa T et al. Integrated use of natriuretic peptides and DASI for cardiac reserve evaluation in high-risk surgical patients: a narrative review. J Anesth Analg Crit Care. 2026 Apr 24. doi: 10.1186/s44158-025-00314-2. PMID: 42032780.

Wijeysundera DN et al. Assessment of functional capacity before major non-cardiac surgery: an international, prospective cohort study (METS). Lancet. 2018;391(10131):2631-2640.

Duceppe E et al. Preoperative N-Terminal Pro-B-Type Natriuretic Peptide and Cardiovascular Events After Noncardiac Surgery: A Cohort Study. Ann Intern Med. 2020;172(2):96-104.