Immune Modulation by Enhanced vs Standard Prehabilitation Program Before Major Surgery

April 21, 2024 updated by: Brice Gaudilliere, Stanford University

Immune System Modulation by Enhanced vs Standard Prehabilitation Program in Patients Undergoing Elective Major Surgery - a Prospective Monocentric Randomized Single-blinded Controlled Trial

Over 30 million surgeries are performed annually in the US. Up to 30% of surgical patients experience delayed surgical recovery, marked by prolonged post-surgical pain, opioid consumption, and functional impairment, which contributes $8 billion annually to US health care costs. Novel interventions that improve the resolution of pain, minimize opioid exposure, and accelerate functional recovery after surgery are urgently needed.

Multi-modal pre-operative optimization programs (or "prehab") integrating exercise, nutrition, and stress reduction have been shown to safely and effectively improve outcomes after surgery. However, no objective biological markers assess prehab effectiveness and are able to tailor prehab programs to individual patients. Surgery is a profound immunological perturbation, during which a complex network of innate and adaptive immune cells is mobilized to organize the recovery process of wound healing, tissue repair, and pain resolution. As such, the in-depth assessment of a patient's immune system before surgery is a promising approach to tailor prehab programs to modifiable biological markers associated with surgical recovery. The primary goal of this clinical trial is to determine the effect of a personalized prehab program on patients immunological status before surgery.

Study Overview

Detailed Description

The study design is a prospective monocenter single-blinded randomized controlled trial in patients undergoing elective major abdominal surgery.

  • Patients will be recruited during the surgical consultation, at least 14 days prior to surgery. If they choose to enroll, they will undergo randomization on the day of enrollment.
  • Prehabilitation (Day 0): personalized or standard prehabilitation program will be proposed to the patients for a period of 2 to 6 weeks. Immunological, nutritional, physical, cognitive, anxiety and quality of life status will be quantified at baseline by previously trained personnel.
  • From the beginning (Day 0) to the end of the prehabilitation program (Day 14 to Day 42): every 7 days, a compliance questionnaire will be filled by phone, by a trained member of the research team blinded to the treatment arm of the study
  • End of the prehabilitation period (Day 14 to Day 42): Immunological, nutritional, physical, cognitive and anxiety status after prehabilitation will be recorded by a trained member of the research team blinded to the treatment arm of the study.
  • Surgery (Day S)
  • Post operative period

    • From Day S (2 hours after surgery end) to discharge from the hospital, length of stay, pain and adverse clinical events will be measured and recorded.
    • Immunological status will be assessed at Day S+1 by blood draw.
    • Cognitive function, neuropathic pain and quality of life will be assessed at Day S + 30.

Study Type

Interventional

Enrollment (Actual)

55

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • California
      • Stanford, California, United States, 94305
        • Stanford University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Adult patients (≥ 18 years)
  • Competent to provide informed consent
  • Undergoing major elective surgery under general anesthesia in ≥14 days from enrollment (abdominal, thoracic, plastic and neurosurgeries).
  • Fluent in English

Exclusion Criteria:

  • Premorbid conditions or orthopedic impairments with contraindications to exercise
  • Cognitive disabilities defined as evolutive neurological or neurodegenerative disease
  • ASA score 4 or higher or patient under palliative care
  • Illiteracy (inability to read the English language).
  • Expected length of stay at hospital < 48 hours
  • Patient under tutorship or curatorship
  • Pregnant or breast-feeding woman
  • Absence of informed consent or request to not participate to the study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Supportive Care
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Personalized prehabilitation
Patients will participate in a personalized health optimization program combining one-on-one coaching, tailored to each patient's physical, nutritional, well-being and cognitive status baseline. Prehabilitation will last from a minimum of 14 days to a maximum of 42 days before surgery
First, an evaluation of patient's aerobic capacity, functional mobility, functional strength, ambulation, fall risk, and overall mobility will be done by a trained member of the research team. Based on their functional level and preexisting conditions, therapeutic exercises will be recommended to optimize their strength, endurance, flexibility, and functional mobility in preparation for surgery. Decisions about the interventions are based on the assessment, individual patient characteristics, environmental factors, surgical type, and monitoring of the client's response and progress. Weekly sessions are 30-45 minutes long to monitor the client's response and progress their program. Based on their response to exercise (evaluated also by 2 apps: Timed Walk App and Smart Metronome & Tuner App), re-evaluation via the assessments described above, change their plan of care (alter frequency, resistance, exercises) or discontinuation of treatment could be decided.
Participants will have the opportunity to learn techniques for mindfulness that have been established to reduce stress and assist with pain management with a member of the research team. Patients will be offered to listen to audio recording of relaxation sessions. Each session contains a relaxation technique that the patient practices while listening to the recording. Then the technique is used the next as a baseline to introduce a new technique more advanced. For some patients who struggle with the techniques the program will be adapted. Patients will choose 2 or 3 techniques and work on them.
Cognitive prehabilitation will consist on the daily use of Lumosity training program, an already existing free app built to increase memory skills. The program proposed by Lumosity is tailored to each patient. The use of Lumosity will be monitored at each in-person session. Patients will be expected to complete at least three 5-minute sessions of Lumosity training per day.
Nutrition prehabilitation will involve transitioning the patient to the Mediterranean diet with targets regarding hydration and the proportion of fruits, vegetables, whole grains, and healthy fats the patient will consume in a given day. This nutritional program is flexible, and it allows for specific physician and nutritionist-recommended dietary needs to be incorporated. The patient is also given tools to encourage success in healthier eating, including recipes, sample menus, healthy restaurant options, meal kit options, and local CSA box options
No Intervention: Standard prehabilitation
Patients in the control group will be provided with standard instructions in a hard-copy form specific to prehabilitation before surgery associating physical, nutritional, stress-reduction and cognitive recommendations without any personalized coaching for at least 14 days prior to surgery.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Composite immunological score
Time Frame: immediately preoperatively
Composite immunological score containing a combination of blood immune cell frequencies and intracellular signaling responses. This score will be normalized to "baseline" (i.e. before prehabilitation) score for each patient.
immediately preoperatively

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Proportion of compliant patients
Time Frame: immediately preoperatively
Patient's compliance to prehabilitation programs will be evaluated using a modified Rehabilitation Adherence Measure scale, that will be filled by phone every 7 days during the prehabilitation program, i.e. 2 to 6 times by patient. Compliant patient will be defined by a mean score >= 8/10.
immediately preoperatively
6 Min Walk Test
Time Frame: immediately preoperatively
Changes in physical status will be examined using 6 Min Walk Test. The evaluation should be based on differences between pre- and post prehabilitation performance.
immediately preoperatively
Timed Up and Go Test
Time Frame: immediately preoperatively
Changes in physical status will be examined using Timed Up and Go Test. The evaluation should be based on differences between pre- and post prehabilitation performance.
immediately preoperatively
Five Times Sit to Stand Test
Time Frame: immediately preoperatively
Changes in physical status will be examined using Five Times Sit to Stand Test. The evaluation should be based on differences between pre- and post prehabilitation performance.
immediately preoperatively
Wall Squat Test
Time Frame: immediately preoperatively
Changes in physical status will be examined using Wall Squat Test. The evaluation should be based on differences between pre- and post prehabilitation performance.
immediately preoperatively
Body Mass Index
Time Frame: immediately preoperatively
Body Mass Index will be recorded. The evaluation should be based on differences between pre- and post prehabilitation performance
immediately preoperatively
Amsterdam Preoperative Anxiety and Information Scale
Time Frame: immediately preoperatively
Prevalence and global severity of anxiety will be evaluated using the APAIS (Amsterdam Preoperative Anxiety and Information Scale). The evaluation should be based on differences between pre- and post prehabilitation performance.
immediately preoperatively
Pain Catastrophizing Scale
Time Frame: immediately preoperatively
Prevalence and global severity of anxiety will be evaluated using the Pain Catastrophizing Scale. The evaluation should be based on differences between pre- and post prehabilitation performance.
immediately preoperatively
Changes in diet
Time Frame: immediately preoperatively
Mediterranean Diet Score will be collected. The evaluation should be based on differences between pre- and post prehabilitation performance. A high intake of Mediterranean foods: cereals, legumes, fruit, vegetables, fish, Mon-unsaturated fatty acids to Saturated fatty acids (M/S) ratio, and wine were scored positive (1) and a high intake of the non-Mediterranean foods: dairy and meat negative (0). The score ranged from 0 to 9 and the higher the score the better the compliance to a traditional Mediterranean diet.
immediately preoperatively
Changes in cognitive functions
Time Frame: immediately preoperatively
Cognitive functions will evaluated by the qMCI test. The evaluation should be based on differences between pre- and post prehabilitation performance.
immediately preoperatively
Incidence of postoperative complications
Time Frame: Postoperatively through to 30 days after surgery
Postoperative complications will be scored by the Comprehensive Complication Index. The Comprehensive Complication Index (CCI®) is based on the complication grading by Clavien-Dindo Classification and implements every occurred complication after an intervention. The overall morbidity is reflected on a scale from 0 (no complication) to 100 (death).
Postoperatively through to 30 days after surgery
Postoperative pain
Time Frame: Postoperatively through to 7 days after surgery
Pain scores will be assessed daily by the patient-reported Visual Analog Scale. Visual analog scale to assess the perceived stress on a horizontal, non-calibrated line of 10 cm, ranging from very low (0) to very high (10)
Postoperatively through to 7 days after surgery
Cumulative opioid consumption
Time Frame: Postoperatively through to day 7
Cumulative opioid consumption will be obtained from the patients' charts up to 7 days after surgery or discharge from hospital if earlier.
Postoperatively through to day 7
Neuropathic pain
Time Frame: 30 days after surgery
Neuropathic pain will be measured by the Patient Reported Outcome Measurement Information System (PROMIS) Neuropathic Pain Quality scale (PROMIS-PQ-Neuro). The questionnaire contains 5 items questions. Scores are based on patient responses to questions about pain intensity. 0 indicates no pain; 5 indicates the most pain imaginable. The total score may be up to 25.
30 days after surgery
Hospital length of stay
Time Frame: 30 days after surgery
Hospital length of stay assessed from patients' medical administrative data in days
30 days after surgery
Changes in quality of life
Time Frame: 30 days after surgery
Quality of life evaluated thanks to the SF-36 scale is a 36-item patient-reported questionnaire that covers eight health domains: physical functioning (10 items), bodily pain (2 items), role limitations due to physical health problems (4 items), role limitations due to personal or emotional problems (4 items), emotional well-being (5 items), social functioning (2 items), energy/fatigue (4 items), and general health perceptions (5 items). Scores for each domain range from 0 to 100, with a higher score defining a more favorable health state. Results will be normalized on "baseline" (before prehab) scores.
30 days after surgery

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Brice Gaudillière, MD, PhD, Stanford University
  • Principal Investigator: Cindy Kin, MD, MS, Stanford University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

October 7, 2020

Primary Completion (Actual)

April 21, 2024

Study Completion (Actual)

April 21, 2024

Study Registration Dates

First Submitted

July 28, 2020

First Submitted That Met QC Criteria

July 30, 2020

First Posted (Actual)

August 4, 2020

Study Record Updates

Last Update Posted (Actual)

April 23, 2024

Last Update Submitted That Met QC Criteria

April 21, 2024

Last Verified

April 1, 2024

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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