Supplemental Parenteral Nutrition in Critically Ill Adults: A Pilot Randomised Controlled Trial
Multiple Organ Failure, Critical Illness
About this trial
This is an interventional supportive care trial for Multiple Organ Failure
Eligibility Criteria
Inclusion Criteria:
Patients in intensive care who meet all of the following:
- Admitted to intensive care between 48 hours and 72 hours previously
- Mechanically ventilated at the time of enrollment and expected to remain ventilated until the day after tomorrow
- At least 16 years of age
- Have central venous access suitable for PN solution administration
Have 1 or more organ system failure (respiratory, cardiovascular or renal) related to their acute illness defined as:
- Partial pressure of oxygen (PaO2) / Fraction of Inspired oxygen (FiO2) ratio ≤ 300 mmHg
Currently on 1 or more continuous vasopressor infusion which were started at least 4 hours ago at a minimum dose of :
- Dopamine greater than 5 mcg/kg/min
- Noradrenaline ≥ 0.1mcg/kg/min
- Adrenaline ≥ 0.1 mcg/kg/min
- Any dose of total vasopressin
- Milrinone >0.25mcg/kg/min)
Renal dysfunction defined as
In patients without known renal disease:
- serum creatinine > 171 mmol/l OR
Currently receiving renal replacement therapy
In patients with known renal disease:
- an absolute increase of > 50% in creatinine from baseline OR
- Currently receiving renal replacement therapy
- Currently has an intracranial pressure monitor or ventricular drain in situ
- Currently receiving extracorporeal membrane oxygenation
- Currently has a ventricular assist device
Exclusion Criteria:
- Both EN and PN cannot be delivered at enrollment (i.e. either an enteral tube or a central venous catheter cannot be placed or clinicians feel that EN or PN cannot be safely administered due to any other reason).
- Currently receiving PN
- Standard PN solutions cannot be delivered at enrolment (i.e. clinicians believe that a patient definitely needs a specific parenteral nutrition formulation (e.g. glutamine-supplementation or specific lipid formulation).
- Death is imminent or deemed highly likely in the next 96 hours.
- There is a current treatment limitation in place or the patient is unlikely to survive to 6 months due to underlying illness
- More than 80% of energy requirements have been satisfactorily delivered via the enteral route in the last 24 hours.
- Are known to be pregnant
Sites / Locations
- The Alfred Hospital
- Geelong Hospital
- Auckland City Hospital (CVICU)
- Auckland City Hospital (DCCM)
- Christchurch Hospital
- Wellington Hospital
Arms of the Study
Arm 1
Arm 2
Other
Experimental
Standard Care
Supplemental PN
Standard care: Nutrition will be managed as per best practice and local policy including the use of small bowel feeding tubes, prokinetics and PN if required to meet nutrition needs.
Supplemental PN to complete inadequate EN provision Patients allocated to the supplemental PN (intervention) group will have PN commenced within 2 hours of randomisation. The starting dose of PN will be determined by the amount of energy received in the 24 hours prior to randomisation. EN will be managed as per local protocol however EN must not be reduced based on the supplemental PN being administered. The adequacy of nutrition provision from both PN and EN will be assessed at midday each day for 7 days or until ICU discharge. The dose of PN will be adjusted according to a prespecified schedule.