226 Participants Needed

Pre-Operative Diet for Vascular Disease

CK
Overseen ByCharles K Ozaki, MD
Age: 18+
Sex: Any
Trial Phase: Academic
Sponsor: Brigham and Women's Hospital
No Placebo GroupAll trial participants will receive the active study treatment (no placebo)

What You Need to Know Before You Apply

What is the purpose of this trial?

A randomized, controlled trial to evaluate patient compliance and biologic mechanisms of a short-term pre-operative Protein-Calorie Restriction (PCR) diet in comparison to a normal ad libitum diet for 4 days before elective vascular surgery involving a major operation. After a pilot study exploring the safety and feasibility of the PCR diet conducted inpatient before carotid endarterectomy titled Short-Term Endogenous Hydrogen Sulfide Upregulation, and a follow-up study titled Dietary Restriction in Vascular Surgery, the investigators now aim to expand the study to at home diet among a variety of vascular surgery procedures. This study will further elucidate not only the practicality of pre-operative short term dietary restriction, but also provide early data to inform biologic mechanisms and to inform future efficacy trails.

Will I have to stop taking my current medications?

The trial information does not specify whether you need to stop taking your current medications. It's best to discuss this with the trial coordinators or your doctor.

How does the treatment Scandi-Shake differ from other treatments for vascular disease?

The treatment Scandi-Shake, used as part of a pre-operative diet, focuses on reducing calorie and protein intake to decrease surgery-related risks by improving metabolic fitness and insulin sensitivity. This approach is unique as it aims to modulate the body's response to surgical stress, unlike other treatments that may not specifically target dietary changes before surgery.12345

What data supports the effectiveness of the treatment Scandi-Shake for vascular disease?

Research suggests that short-term dietary interventions, like protein-calorie restriction, can improve surgical outcomes by reducing complications and enhancing recovery in vascular surgery patients. Additionally, targeted nutritional support has been shown to improve nutritional status and reduce hospital stays in similar surgical contexts.15678

Who Is on the Research Team?

CK

Charles K Ozaki, MD

Principal Investigator

Brigham and Women's Hospital

Are You a Good Fit for This Trial?

This trial is for adults over 18 who are scheduled for non-emergency lower extremity vein bypass surgery and expected to live at least one more year. They must understand the study, have an albumin level of 3.0 or higher, not be pregnant, and have no allergies to Scandi-Shake ingredients.

Inclusion Criteria

Ability to provide informed consent
Your albumin level is 3.0 or higher, and if it applies to you, you have had a negative pregnancy test.
You are not allergic to any of the ingredients in Scandi-Shake.
See 2 more

Exclusion Criteria

Your albumin level is lower than 3.0.
I had emergency surgery on the blood vessels in my leg.
Doctors think you may live for less than one year.
See 2 more

Timeline for a Trial Participant

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

Pre-operative Diet Intervention

Participants follow a 4-day pre-operative dietary intervention with either a protein-calorie restriction diet or an ad libitum diet before elective vascular surgery.

4 days
No in-person visits, diet logging via mobile app

Surgery

Participants undergo elective vascular surgery involving an open major operation.

1 day

Immediate Post-operative Monitoring

Participants are monitored for immediate post-operative outcomes and complications.

1 day

Follow-up

Participants are monitored for safety, effectiveness, and compliance with dietary interventions, including assessment of biological markers and complications.

1 month
Multiple assessments including blood tests and questionnaires

Long-term Follow-up

Participants are monitored for long-term outcomes such as major adverse limb events and survival.

1 year

What Are the Treatments Tested in This Trial?

Interventions

  • Scandi-Shake
Trial Overview The trial tests a short-term Protein-Calorie Restriction (PCR) diet called Scandi-Shake against a normal diet before elective vascular surgery. It's randomized and controlled, aiming to see if patients will follow the diet at home and how it affects their body before surgery.
How Is the Trial Designed?
2Treatment groups
Experimental Treatment
Active Control
Group I: Protein-calorie restrictionExperimental Treatment1 Intervention
Four day dietary intervention immediately before surgery of Scandi-Shake \[any of 4 flavors - vanilla, strawberry, banana cream, and caramel\] mixed with almond milk (85 grams Scandi-Shake mix to 240 cc almond milk) calculated individually for a total daily volume to achieve 30% caloric restriction and 70% protein restriction, based on gender, age, height, weight, and activity level.
Group II: ControlActive Control1 Intervention
Ad libitum diet for four days immediately before surgery

Find a Clinic Near You

Who Is Running the Clinical Trial?

Brigham and Women's Hospital

Lead Sponsor

Trials
1,694
Recruited
14,790,000+

Published Research Related to This Trial

In the OMEGA-PAD I Trial involving 80 patients with peripheral artery disease, high-dose fish oil supplementation did not significantly improve endothelial function compared to placebo, indicating that it may not be effective for this specific outcome.
However, fish oil supplementation did lead to a significant reduction in triglycerides and an increase in omega-3 fatty acids in the blood, suggesting potential benefits in lipid profiles and inflammation management for patients with PAD.
Short-Term, High-Dose Fish Oil Supplementation Increases the Production of Omega-3 Fatty Acid-Derived Mediators in Patients With Peripheral Artery Disease (the OMEGA-PAD I Trial).Grenon, SM., Owens, CD., Nosova, EV., et al.[2018]

Citations

Targeted nutritional intervention with enhanced recovery after surgery for carotid endarterectomy: A prospective clinical trial. [2023]
Reducing elective vascular surgery perioperative risk with brief preoperative dietary restriction. [2022]
Nutritional status of patients admitted to a metropolitan tertiary care vascular surgery unit. [2019]
Insights From a Short-Term Protein-Calorie Restriction Exploratory Trial in Elective Carotid Endarterectomy Patients. [2022]
NutriCatt Protocol Improves Body Composition and Clinical Outcomes in Elderly Patients Undergoing Colorectal Surgery in ERAS Program: A Retrospective Cohort Study. [2021]
Short-Term Pre-Operative Protein Caloric Restriction in Elective Vascular Surgery Patients: A Randomized Clinical Trial. [2021]
Short-Term, High-Dose Fish Oil Supplementation Increases the Production of Omega-3 Fatty Acid-Derived Mediators in Patients With Peripheral Artery Disease (the OMEGA-PAD I Trial). [2018]
Feasibility and Tolerability of Daily Pulse Consumption in Individuals with Peripheral Artery Disease. [2018]
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