Early in-bed cycling plus IV amino acids did not improve functional outcomes in the NEXIS ICU trial
AI-summarized from the linked source. Educational brief, not medical advice.
Brief summary
In a 115-patient multicenter randomized trial of acute respiratory failure, early in-bed cycling plus intravenous amino acids appeared safe but did not improve discharge walking distance, other functional outcomes, or 6-month outcomes versus usual care.
What NurseJet pulled from the source
Investigators at multiple centers randomized 115 adults with acute respiratory failure, more than 90% of whom were mechanically ventilated, to usual care alone or usual care plus 45 minutes per day of in-bed cycling and intravenous amino acids targeting total protein intake of 2.0 to 2.5 g/kg/day. The intervention delivered 40 plus or minus 7 minutes of cycling per day and 1.9 plus or minus 0.6 g/kg/day of protein, versus 0.9 plus or minus 0.6 g/kg/day with usual care. At hospital discharge, median 6-minute walk distance was 108 m in the intervention group and 95 m with usual care; the median difference was 10 m (95% CI -75 to 84; P=.51). Other ICU-discharge, hospital-discharge, and 6-month outcomes were also similar. Enrollment stopped early because recruitment was slow, not because of safety concerns. The combined strategy appeared safe but did not improve the trial's functional outcomes.
Why this matters for nurses
Early mobility and nutrition require coordinated bedside work and are intended to address long-lasting weakness after critical illness. This trial matters for ICU nurses because it tested an intensive combined protocol with blinded functional assessment and found no added functional benefit over usual care.
Bedside takeaway
Be aware that adding early in-bed cycling and IV amino acids to usual ICU care did not improve discharge walking distance or 6-month outcomes in this 115-patient trial, although the combined protocol appeared safe.
Key takeaways
- The multicenter phase 2 trial randomized 115 adults with acute respiratory failure, and more than 90% were mechanically ventilated.
- The intervention combined daily in-bed cycling with intravenous amino acids and approximately doubled achieved total protein intake.
- Discharge 6-minute walk distance did not differ significantly between intervention and usual-care groups.
- Secondary outcomes through 6 months were also similar, and enrollment stopped early because recruitment was slow.
Practice implications
- For ICU teams, the result supports reviewing goals, workload, tolerance, and local evidence before adding this exact combined protocol. It should not be read as a reason to stop ordered mobility or nutrition practices, because cycling and amino acids were tested together rather than separately.
Limitations & cautions
- The phase 2 trial randomized 115 patients and stopped before its planned 128 evaluable participants because of slow recruitment. The combined design cannot isolate cycling from amino acids, the confidence interval around walking distance was wide, and findings may not apply beyond adults with acute respiratory failure.
- AI-summarized from the linked source. Review the original article before applying to practice.
Citations
Exact source links
Public citations are filtered to exact credible source pages. Homepage-only or invalid links stay in admin review and are not shown here.
American Journal of Respiratory and Critical Care Medicine (PubMed)
American Journal of Respiratory and Critical Care Medicine (PubMed). Nutrition and Exercise in Critical Illness (NEXIS) trial: randomized trial of combined in-bed cycling and intravenous amino acid plus usual care.
https://pubmed.ncbi.nlm.nih.gov/42438140/
Professional education only
