Using ephedrine to speed up rocuronium effects in elderly patients

A Blinded Randomized Study of Ephedrine 0.15 Mg/kg for Reducing Onset Time of Rocuronium 0.6 Mg/kg in Elderly Patients (≥ 80 Years)

Phase 4 Interventional Rigshospitalet, Denmark · NCT06681662

This study is testing if giving ephedrine can help older patients get the effects of a muscle relaxant called rocuronium faster during surgery.

Quick facts

PhasePhase 4
Study typeInterventional
Enrollment80 (estimated)
Ages80 Years and up
SexAll
SponsorRigshospitalet, Denmark Academic / other
Locations2 sites (Copenhagen and 1 other locations)
Trial IDNCT06681662 on ClinicalTrials.gov

What this trial studies

This study aims to evaluate the effect of ephedrine on the onset time of rocuronium in patients aged 80 and older undergoing elective surgeries requiring general anesthesia. The hypothesis is that administering ephedrine at a dose of 0.15 mg/kg will result in a shorter onset time for rocuronium compared to a placebo. Given the increased risk of complications in elderly patients, this research seeks to improve anesthesia management by potentially reducing the time to secure the airway. The study will measure the onset time of neuromuscular blockade objectively in this population.

Who should consider this trial

Good fit: Ideal candidates for this study are elderly patients aged 80 and older scheduled for elective surgeries under general anesthesia.

Not a fit: Patients with known allergies to rocuronium or ephedrine, or those with neuromuscular diseases, may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could lead to safer and more efficient anesthesia practices for elderly patients.

How similar studies have performed: Previous studies have shown that ephedrine can reduce the onset time of rocuronium in younger adults, suggesting potential applicability in the elderly, though this specific approach is less tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥ 80
* Scheduled for elective operations under general anesthesia with intubation
* American Society of Anesthesiologists physical status classification (ASA) I to III
* Informed consent
* Read and understand Danish

Exclusion Criteria:

* Known allergy to rocuronium or ephedrine
* Neuromuscular disease that may interfere with neuromuscular data
* Indication for rapid sequence induction
* Daily use of beta-blocking agents
* Known cardiac arrythmia (atrial fibrillation, supraventricular or ventricular)

Where this trial is running

Copenhagen and 1 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Neuromuscular Blockade
Last reviewed 2026-06-09 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.