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CompletedNCT03440593Updated Oct 22, 2020

Indirect Calorimetry Usage and Effect in Ventilator-free Days and Muscle Thickness in Septic Ventilated Patients

An interventional study of Caloric delivery will target results of IC measurement. in Sepsis, Critical Illness and Respiratory Failure, sponsored by Baylor Research Institute. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-10-22.

Sponsored by Baylor Research Institute · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
25
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 517 studies in Sepsis with a site in United States — 75 open to participants now, 99 under way, 3 of them phase 3. Sepsis · United States.

Enrollment
233rd of 310
25 · median 84
Started
2018
with 24 others
No phase
140 of 517
22 open now
Registered
289th of 517
by date

Among the 517 studies in Sepsis with a site in United States, this one is the 233rd largest by enrollment of the 310 interventional ones that give a count, is one of 25 that started in 2018, is one of 140 with no phase, and was the 289th registered.

Sepsis

2,417 studies on the registry are indexed under Sepsis; 542 are open to participants now.

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Open to participants now

75 of the 517 studies in Sepsis with a site in United States are open now. Recruiting first, the newest first:

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A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 318 Sepsis studies recruiting now, 213 (67%) set no upper age limit and 53 (17%) stop at 75 or younger; 68 take children under 18; 42 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

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02

Study summary

Patients admitted to the ICU with diagnosis of sepsis and requiring mechanical ventilation for at least 24-hours and receiving enteral or parenteral nutrition will be prospectively randomized to one of two arms. Patients allocated to the estimated energy expenditure group will receive nutrition with caloric intake calculated based on the Penn State equation. Patients randomized to the measured group will receive nutrition with caloric intake calculated based on IC measurement present in the GE ventilator. Patients in the estimated group will have IC performed, but these data will not be used for prescription of nutrition. An equal number of beds within the ICU will be allocated to the measured group and the estimated group. The primary objective is to assess whether the utilization of indirect calorimetry for caloric goal calculation results in improvement in muscular structure, and consequent reduction of mechanical ventilation duration in patients with sepsis in comparison to utilizing the Penn State estimation equation for caloric goal calculation. The secondary objective is to assess whether the utilization of indirect calorimetry for caloric goal calculation results in improved adequacy of nutritional delivery in comparison to the adequacy of nutritional delivered when utilizing the Penn State estimation equation. Adult patients (> 18 years of age) admitted to the hospital with diagnosis of sepsis, and who require mechanical ventilation during hospitalization will be considered. Patients newly ventilated for at least one day but less than three days will be included in the study. Informed consent will be obtained from the legal authorized representative (LAR).

Read the detailed description

Mechanically ventilated septic patients admitted to the ICU receiving enteral and or parenteral nutrition will be randomly allocated to one of the aforementioned groups. Demographic information, parameters obtained from the ventilator, muscle measurements through ultrasonography, and clinical information, such as time spent on the mechanical ventilation, time spent in ICU and in the hospital will be collected. Participants will enroll in the study upon admission to the ICU until one of the following occurs-patient is extubated, discharged from the ICU, or death with a maximum of 14 days of ICU admission. Upon inclusion, IC will be assessed at baseline in all patients and then twice weekly. Bedside ultrasonography of the diaphragm and quadricep muscle thickness will be performed upon enrollment of the study (within 3 days of MV and within 1 day of study enrollment) and repeated every 3-5 days with a minimum of twice weekly while on the MV. Severity of illness score (APACHE IV), cause of sepsis, ventilator data, such as average tidal volumes and plateau pressures, cumulative and equivalent doses of sedatives (propofol, midazolam, lorazepam) and analgesics (fentanyl, hydromorphone) will be collected. Presence of delirium during ventilation, based on ICU-CAM scores will be included, as well.

03

Conditions studied

  • Sepsis
  • Critical Illness
  • Respiratory Failure
  • Nutrition Disorders
  • Calorie Deficiency
  • Diaphragm Injury
  • Quadriceps Muscle Atrophy

Keywords

  • sepsis
  • nutrition
  • indirect calorimetry
  • muscle thickness
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • New Medical ICU admits
  • Mechanically ventilated for one day and less than 3 days upon enrollment
  • Adults 18 years or older
  • Expected length of ICU stay greater than 3 days
  • Initiated on nutrition support (parenteral/or enteral nutrition)
  • Sepsis diagnosis documented by physician within one day of ICU admit
  • Signed

Exclusion criteria

Exclusion Criteria:

  • Does not meet all criteria of valid indirect calorimetry test for baseline -measurement
  • Receiving pulmonary inhaled vasodilator
  • Extracorporeal Membrane, Oxygenation (ECMO)
  • Pregnancy
  • Patients required to be in prone position
  • Reintubation
  • DNR/AND
  • Prisoner
  • Employee of BSWH
  • Students in contractual agreement with BSWH entity
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
25 participants (actual)

Study arms

  • Experimental
    Measured Arm

    Patients allocated to the measured energy expenditure (group M) will receive the intervention. Caloric delivery will target results of IC measurement.

    Other: Caloric delivery will target results of IC measurement.

  • No intervention
    Estimated Arm

    Patients allocated to the estimated energy expenditure (group E) will receive nutrition with caloric intake calculated based on the Penn State equation.

Interventions

  • OtherCaloric delivery will target results of IC measurement.

    The prescribed calories to be delivered will be set to target the measurement obtained from performing indirect calorimetry (IC). IC measures the gas exchange of oxygen consumption and carbon dioxide production to determine the true metabolic needs for cellular respiration. The expenditure of calories will be measured utilizing the gas module incorporated within the General Electric Carescape R860 ventilators.

06

What researchers measure

Primary outcomes

  1. Ventilator free days (VFD)

    The number of days from day 1 to day 28 (of hospital admission) on which the patient was not on the mechanical ventilator. If the patient expired or requires more than 28 days of mechanical ventilation, the value is zero.

    Time frame: From current hospital admission date until the date of hospital discharge, date of death from any cause, whichever came first, assessed up to 28 days.

Secondary outcomes

  1. Calorie and protein adequacy

    Nutritional adequacy of caloric and protein delivery is measured as a ratio of the calories and protein received by the patient compared to the calories and protein prescribed during mechanical ventilation. The ratios are determined individually for calories and protein.

    Time frame: Nutritional adequacy will be assessed from day one of ventilation in all patients until extubation from the MV or date of death, whichever came first, assessed up to 14 days.

  2. Change in quadricep muscle thickness

    Evaluation of the change in muscle thickness during study enrollment in correlation with the adequacy of nutrition delivery.

    Time frame: Quadricep muscle thickness will be measured upon enrollment to the study (within 72 hours of MV) and every 3-5 days with a minimum of two times per 7 days until extubation from the MV or date of death, whichever came first, assessed up to 14 days.

  3. Change in diaphragm muscle thickness

    Evaluation of the change in muscle thickness during study enrollment in correlation with the adequacy of nutrition delivery.

    Time frame: Diaphragm muscle thickness will be measured upon enrollment to the study (within 72 hours of MV) and then every 3-5 days with a minimum of two times per 7 days until extubation from the MV or date of death, whichever came first, assessed up to 14 days.

Other outcomes

  1. Hospital Mortality

    Expiration of the participant will be classified as "yes" if patient expired during the current hospital admission.

    Time frame: From current hospital admission date until the date of hospital discharge or date of death from any cause, whichever came first, assessed up to 24 months.

  2. Hospital length of stay

    Total number of days patient was admitted to the hospital for the current admission.

    Time frame: From current hospital admission date until the date of hospital discharge or date of death from any cause, whichever came first, assessed up to 24 months.

  3. Intensive care unit length of stay

    Total number of days patient was admitted in the intensive care unit for the current hospital admission.

    Time frame: From current hospital admission date until the date of hospital discharge or date of death from any cause, whichever came first, assessed up to 24 months.

07

Study locations

1 site
  • Baylor University Medical Center
    Dallas, Texas 75246, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Sep 2018 to primary completion in May 2019, 8 months.

Of 301 non-industry interventional studies with no phase under Sepsis, half reached primary completion within 23 months of starting (the median), counting those still running; a quarter within 12 and three quarters within 42. This study's 8 months is below that.

Counting every sponsor, half of 324 studies reached it within 22 months; a quarter within 12 and three quarters within 40.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 17, 2018
First posted
Feb 22, 2018
StartActual
Sep 10, 2018
Primary completionActual
May 31, 2019
CompletionActual
Oct 3, 2019
Last update
Oct 22, 2020
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Oct 22, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03440593
Responsible party
Sponsor
First posted
Feb 22, 2018
Start date
Sep 10, 2018
Primary completion
May 31, 2019
Completion
Oct 3, 2019
Last update
Oct 22, 2020

Study contacts

Ashley Mullins, MS
study chair · Baylor Health Care System
Ariel Modrykamien, MD
principal investigator · Baylor Health Care System

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jan 2019. You cannot join it, but the record below documents what was studied.

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