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Trial of Low Residue Diet Versus Clear Liquids Following Elective Colorectal Surgery

Prospective Randomized Controlled Trial Investigating Commencement of Low Residue Diet Versus Clear Liquids on Postoperative Zero Following Elective Colorectal Surgery

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03260426
Enrollment
100
Registered
2017-08-24
Start date
2017-08-16
Completion date
2018-07-31
Last updated
2020-01-31

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Nausea/Vomiting

Keywords

Tolerability diet after surgery

Brief summary

Prospective randomized controlled trial investigating commencement of low residue diet versus clear liquids on postoperative zero following elective colorectal surgery, with regards to patient tolerability, incidence of nausea and/or vomiting, and postoperative length of hospitalization stay.

Detailed description

Offering patients, a low residue diet on the first postoperative day (POD1) after colorectal surgery is safe and improves surgical outcomes and postoperative hospital stay. Early use of low solid is superior to clear liquid diet after elective colorectal surgery. The purpose of this study is to prospectively evaluate whether providing a patient a solid diet from postoperative day zero is superior to clear liquids. The primary endpoint measured will be patient tolerability, as evidenced by absence of vomiting. The secondary endpoints measured will be duration of supplemental intravenous hydration needed, length of hospital stay and postoperative complications, and intestinal rate measured by Abstats. Abstats™ consists of a disposable plastic device embedded with a microphone that adheres to the abdominal wall and connects to a computer measuring acoustic event rates. The monitor will be placed on the patient's abdomen 30 minutes prior to surgery in the preoperative holding area to obtain baseline intestinal rate. The monitor will be removed prior to surgery and replaced by the surgical team in the operating room and maintained until postoperative day 3. Daily intestinal rate will be calculated as mean and median acoustic events per minute. The raw data will be analyzed by an investigator blinded to the clinical data. Intestinal rates of patients offered immediate solid feeds will be compared with those offered clear feeds. In addition, patients not tolerating or consuming early solid meal will be compared with those who do to identify whether Abstat™ can be an early predictor of diet intolerance in patients undergoing colorectal surgery. Patients will be assigned into one of two groups: Group I - Clear liquids on postoperative day zero immediately upon return to the floor and subsequent days' advancement of enteral diet to regular diet is as per discretion of the attending physician. Group II - Regular diet from postoperative day zero immediately upon return to floor and onwards. Three questionnaires assessing quality of life are to be completed by the patient, during his/her hospital stay. On postoperative day one, a self-administered questionnaire is to be completed by the patient. Please see appendix A for the questionnaire details. The same questionnaire is administered on postoperative day two and again on the last day of hospitalization.

Interventions

DIETARY_SUPPLEMENTClear Liquids

Clear liquids on postoperative day zero immediately upon return to the floor and subsequent days' advancement of enteral diet to regular diet is as per discretion of the attending physician.

DIETARY_SUPPLEMENTRegular Solid

Regular diet from postoperative day zero immediately upon return to floor and onwards

DEVICEAbstats

Intestinal rate measured by Abstats™ in patients offered immediate solid versus clear liquids after colorectal surgery

Sponsors

Cedars-Sinai Medical Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Able to freely give written informed consent to participate in the study and have signed the Informed Consent Form; 2. Males or females, \>18 years of age inclusive at the time of study screening; 3. American Society of Anesthesiologists (ASA) Class I-III; 4. Colorectal surgery (open and/or robotic/laparoscopic); 5. Elective Surgery

Exclusion criteria

1. Mentally incompetent or unable or unwilling to provide informed consent or comply with study procedures. 2. Children \<18 years of age. 3. Pre-operative clinical diagnosis of intestinal obstruction. 4. Pre-existing known upper gastrointestinal disorders including hiatus hernia, gastroesophageal reflux disease, peptic ulcer disease. 5. Pre-existing oropharyngeal disorders such as stomatitis, altered taste sensations. 6. Colorectal surgery with concomitant resectional surgery of the stomach or proximal jejunum (small bowel). 7. Pregnant patients. 8. Bedbound or moribund patients. 9. Pre-existing history of clinical depression. 10. Epidural analgesia. 11. Surgical procedures completed after 4pm 12. Patients taking narcotics prior to elective colorectal surgery

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants Who Experienced Emesis on Post Operative Day 2POD 2Patient tolerability, as evidenced by development of vomiting on postoperative day two.

Secondary

MeasureTime frameDescription
Antiemetic Usage30 daysIf antiemetics were used in
Hospital Stay30 daysLength of postoperative stay
Post-operative Ileus30 daysDevelopment of post-operative ileus
Number of Participants Able to Tolerate a Regular Diet as Compared to a Clear Liquid Diet on Post Operative Day 0 (POD 0).POD 0Tolerability of regular diet will be determined by the patients ability to eat more than 50% of a solid meal on post operative day zero.
Nausea ScorePOD 1 and POD 2 and DischargeInstrument title: Quality of Life Assessment Visual Analogue scale.Higher scores mean a worse outcome. Nausea Score on POD 1 and POD 2 and Discharge by using a self reported quality of life measure at regular intervals using a visual analog scale (0-10). A higher score means worse outcome and lower score means better outcome.
Bloating ScorePOD 1 and POD 2 and DischargeInstrument title: Quality of Life Assessment Visual Analogue scale.Higher scores mean a worse outcome. Bloating Score on POD 1 and POD 2 and Discharge by using a self reported quality of life measure at regular intervals using a visual analog scale (0-10). A higher score means worse outcome and lower score means better outcome.
Pain ScorePOD 1 and POD 2 and DischargeInstrument title: Quality of Life Assessment Visual Analogue scale.Higher scores mean a worse outcome. Pain score evaluated POD 1 and POD 2 and Discharge by using a self reported quality of life measure at regular intervals using a visual analog scale (0-10). A higher score means worse outcome and lower score means better outcome.

Countries

United States

Participant flow

Participants by arm

ArmCount
Clear Liquid Diet
Clear liquids on postoperative day zero and intestinal rate measured by Abstats Clear Liquids: Clear liquids on postoperative day zero immediately upon return to the floor and subsequent days' advancement of enteral diet to regular diet is as per discretion of the attending physician. Abstats: Intestinal rate measured by Abstats™ in patients offered immediate solid versus clear liquids after colorectal surgery
50
Regular Solid Diet
Regular diet from postoperative day zero and intestinal rate measured by Abstats Regular Solid: Regular diet from postoperative day zero immediately upon return to floor and onwards Abstats: Intestinal rate measured by Abstats™ in patients offered immediate solid versus clear liquids after colorectal surgery
50
Total100

Baseline characteristics

CharacteristicClear Liquid DietTotalRegular Solid Diet
Age, Continuous47.5 years
STANDARD_DEVIATION 50
46.5 years
STANDARD_DEVIATION 100
45.5 years
STANDARD_DEVIATION 50
Anastomosis
Anastomosis formed
35 Participants71 Participants36 Participants
Anastomosis
No Anastomosis
15 Participants29 Participants14 Participants
Body Mass Index23.6 kg/m^2
STANDARD_DEVIATION 4.3
23.1 kg/m^2
STANDARD_DEVIATION 4.1
22.7 kg/m^2
STANDARD_DEVIATION 4.9
Diagnosis
Cancer
8 Participants14 Participants6 Participants
Diagnosis
IBD
39 Participants76 Participants37 Participants
Diagnosis
Other
3 Participants10 Participants7 Participants
Ostomy Use
Colostomy
2 Participants3 Participants1 Participants
Ostomy Use
Ileostomy
24 Participants46 Participants22 Participants
Ostomy Use
No ostomy
24 Participants51 Participants27 Participants
Prior abdominal surgery21 Participants41 Participants20 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
50 Participants100 Participants50 Participants
Race (NIH/OMB)
White
0 Participants0 Participants0 Participants
Sex: Female, Male
Female
28 Participants56 Participants28 Participants
Sex: Female, Male
Male
22 Participants44 Participants22 Participants
Site of surgery
pelvis
14 Participants31 Participants17 Participants
Site of surgery
Right colon
13 Participants25 Participants12 Participants
Site of surgery
Small bowel
9 Participants21 Participants12 Participants
Site of surgery
Subtotal/left
14 Participants23 Participants9 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 500 / 50
other
Total, other adverse events
0 / 500 / 50
serious
Total, serious adverse events
11 / 5011 / 50

Outcome results

Primary

Number of Participants Who Experienced Emesis on Post Operative Day 2

Patient tolerability, as evidenced by development of vomiting on postoperative day two.

Time frame: POD 2

Population: All participants undergoing surgery

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Clear Liquid DietNumber of Participants Who Experienced Emesis on Post Operative Day 29 Participants
Regular Solid DietNumber of Participants Who Experienced Emesis on Post Operative Day 29 Participants
Secondary

Antiemetic Usage

If antiemetics were used in

Time frame: 30 days

Population: All participants undergoing surgery

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Clear Liquid DietAntiemetic Usage37 Participants
Regular Solid DietAntiemetic Usage30 Participants
Secondary

Bloating Score

Instrument title: Quality of Life Assessment Visual Analogue scale.Higher scores mean a worse outcome. Bloating Score on POD 1 and POD 2 and Discharge by using a self reported quality of life measure at regular intervals using a visual analog scale (0-10). A higher score means worse outcome and lower score means better outcome.

Time frame: POD 1 and POD 2 and Discharge

Population: All participants undergoing surgery.

ArmMeasureGroupValue (MEAN)
Clear Liquid DietBloating ScorePOD 13 score on a scale
Clear Liquid DietBloating ScorePOD 22 score on a scale
Clear Liquid DietBloating ScorePOD 32 score on a scale
Regular Solid DietBloating ScorePOD 12 score on a scale
Regular Solid DietBloating ScorePOD 22 score on a scale
Regular Solid DietBloating ScorePOD 32 score on a scale
Secondary

Hospital Stay

Length of postoperative stay

Time frame: 30 days

ArmMeasureValue (MEAN)Dispersion
Clear Liquid DietHospital Stay3 daysStandard Error 3.5
Regular Solid DietHospital Stay2.5 daysStandard Error 4
Secondary

Nausea Score

Instrument title: Quality of Life Assessment Visual Analogue scale.Higher scores mean a worse outcome. Nausea Score on POD 1 and POD 2 and Discharge by using a self reported quality of life measure at regular intervals using a visual analog scale (0-10). A higher score means worse outcome and lower score means better outcome.

Time frame: POD 1 and POD 2 and Discharge

Population: All participants undergoing surgery.

ArmMeasureGroupValue (MEAN)
Clear Liquid DietNausea ScorePOD 11 score on a scale
Clear Liquid DietNausea ScorePOD 21 score on a scale
Clear Liquid DietNausea ScoreDischarge1 score on a scale
Regular Solid DietNausea ScorePOD 21 score on a scale
Regular Solid DietNausea ScorePOD 11 score on a scale
Regular Solid DietNausea ScoreDischarge1 score on a scale
Secondary

Number of Participants Able to Tolerate a Regular Diet as Compared to a Clear Liquid Diet on Post Operative Day 0 (POD 0).

Tolerability of regular diet will be determined by the patients ability to eat more than 50% of a solid meal on post operative day zero.

Time frame: POD 0

Population: All participants undergoing surgery

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Clear Liquid DietNumber of Participants Able to Tolerate a Regular Diet as Compared to a Clear Liquid Diet on Post Operative Day 0 (POD 0).46 Participants
Regular Solid DietNumber of Participants Able to Tolerate a Regular Diet as Compared to a Clear Liquid Diet on Post Operative Day 0 (POD 0).34 Participants
Secondary

Pain Score

Instrument title: Quality of Life Assessment Visual Analogue scale.Higher scores mean a worse outcome. Pain score evaluated POD 1 and POD 2 and Discharge by using a self reported quality of life measure at regular intervals using a visual analog scale (0-10). A higher score means worse outcome and lower score means better outcome.

Time frame: POD 1 and POD 2 and Discharge

Population: All participants undergoing surgery

ArmMeasureGroupValue (MEAN)
Clear Liquid DietPain ScorePOD 14 score on a scale
Clear Liquid DietPain ScorePOD 23 score on a scale
Clear Liquid DietPain ScoreDischarge2 score on a scale
Regular Solid DietPain ScorePOD 14 score on a scale
Regular Solid DietPain ScorePOD 24 score on a scale
Regular Solid DietPain ScoreDischarge3 score on a scale
Secondary

Post-operative Ileus

Development of post-operative ileus

Time frame: 30 days

Population: All participants undergoing surgery

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Clear Liquid DietPost-operative Ileus11 Participants
Regular Solid DietPost-operative Ileus11 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026