Related Experiment Video
Updated: Mar 26, 2026

02:58
Measurement of Compressive Stress-Strain Response at Small-Strains
Published on: December 5, 2025
405
Can we measure surgical resilience?
David Graham1, Guillermo Becerril-Martinez2, Lena Quinto1
1Faculty of Medicine, The University of Sydney, Australia.
Medical Hypotheses
|January 26, 2016
Summary
This study explores surgical resilience, linking psychological resilience to improved patient recovery. It investigates if biomarkers like neuropeptide Y (NPY), testosterone, and dehydroepiandrosterone (DHEA) predict surgical outcomes.
Area of Science:
- Investigates the intersection of psychological resilience and surgical outcomes.
- Focuses on identifying biological correlates of surgical resilience.
Background:
- Surgical resilience, or psychological resilience in surgical patients, is associated with better recovery and wound healing.
- The hypothesis suggests that endogenous biomarkers, including neuropeptide Y (NPY), testosterone, and dehydroepiandrosterone (DHEA), are altered in resilient patients.
- This research explores the potential of these biomarkers to predict enhanced surgical recovery.
Purpose of the Study:
- To determine the prognostic value of resilience biomarkers in surgical recovery.
- To compare recovery outcomes in patients with high versus low titres of resilience biomarkers.
- To assess the correlation between psychometric resilience testing and biomarker levels.
Main Methods:
- A cohort of patients undergoing major surgery will be psychometrically tested for resilience.
- Biomarker levels (NPY, testosterone, DHEA) will be measured and compared to resilience scores.
- Primary outcome: length of hospital stay; Secondary outcomes: complications, rehabilitation time, readmission.
Main Results:
- The study aims to establish a link between specific biomarker levels and surgical recovery metrics.
- It will analyze the predictive power of neuropeptide Y (NPY), testosterone, and dehydroepiandrosterone (DHEA) for patient outcomes.
- Results will indicate whether high biomarker titres correlate with improved recovery.
Conclusions:
- If the hypothesis is supported, resilience biomarkers could enable individualized perioperative management.
- Biomarker identification may lead to more efficient healthcare resource allocation.
- This research could pave the way for personalized surgical recovery strategies based on biological markers.
Related Concept Videos
Measurements of Strain
2.8K
Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
2.8K
Yield Criteria for Ductile Materials under Plane Stress
707
In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
The Maximum Shearing Stress Criterion, also known as...
The Maximum Shearing Stress Criterion, also known as...
707
Mechanical Characteristics of Steel
1.2K
The mechanical characteristics of steel are assessed through various tests that evaluate its strength, toughness, and flexibility. These tests include tension, torsion, impact, bending, and hardness assessments, each providing crucial information about steel's suitability for specific applications.
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
1.2K

