A phase 3, randomized, double-blind study to assess the efficacy and safety of fospropofol disodium injection for moderate sedation in patients undergoing flexible bronchoscopy

Chest. 2009 Jan;135(1):41-47. doi: 10.1378/chest.08-0623. Epub 2008 Jul 18.


Background: Fospropofol disodium is a water-soluble prodrug of propofol with unique pharmacokinetic/pharmacodynamic properties. This randomized, double-blind, multicenter study evaluated the use of fospropofol in patients undergoing flexible bronchoscopy.

Methods: Patients >or= 18 years of age were randomized (2:3) to receive fospropofol, 2 mg/kg or 6.5 mg/kg, after pretreatment with fentanyl, 50 microg. Supplemental doses of each were given per protocol. The primary end point was sedation success, which was defined as follows: three consecutive Modified Observer's Assessment of Alertness/Sedation scores of <or= 4 plus procedure completion without alternative sedative medication and/or mechanical ventilation. Other end points included treatment success, patient/physician satisfaction, and safety.

Results: Of 252 patients, 150 were randomized to receive 6.5 mg/kg fospropofol; 102 were randomized to receive 2 mg/kg fospropofol. Sedation success rates were 88.7% and 27.5%, respectively (p < 0.0001). Treatment successes (91.3% vs 41.2%, respectively; p < 0.001), willingness to be treated again (94.6% vs 78.2%, respectively; p < 0.001), and absence of procedural recall (83.3% vs 55.4%, respectively; p < 0.001) were significantly better with the administration of 6.5 mg/kg fospropofol. The median time to full alertness was slightly longer for the 6.5 mg/kg dose (5.5 vs 3.0 min, respectively). The proportion of patients requiring supplemental therapy with analgesics (16.7% vs 37.3%, respectively) and the use of alternative sedative medications (8.0% vs 58.8%, respectively) were lower for patients in the 6.5 mg/kg dose group (all comparisons, p < 0.001). The most frequent adverse events (AEs) were transient and self-limited paresthesias and pruritus of mild-to-moderate severity. Hypoxemia (predominantly mild-to-moderate) was the most common sedation-related AE, and occurred in 15.4% and 12.6% of patients, respectively, in the 6.5 and 2 mg/kg fospropofol dose groups.

Conclusions: Fospropofol provided safe and effective sedation for patients undergoing flexible bronchoscopy.

Trial registration: Clinical Trials.gov Identifier: NCT00306722.

Publication types

  • Clinical Trial, Phase III
  • Multicenter Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Bronchoscopes*
  • Bronchoscopy*
  • Conscious Sedation*
  • Double-Blind Method
  • Female
  • Humans
  • Hypnotics and Sedatives / administration & dosage*
  • Hypnotics and Sedatives / adverse effects
  • Injections, Intravenous
  • Male
  • Middle Aged
  • Patient Satisfaction
  • Propofol / administration & dosage
  • Propofol / adverse effects
  • Propofol / analogs & derivatives*
  • Treatment Outcome
  • Young Adult


  • Hypnotics and Sedatives
  • fospropofol
  • Propofol

Associated data

  • ClinicalTrials.gov/NCT00306722