Anesthesia, GeneralPhase 3NCT00724932
Comparison of Sugammadex With Neostigmine During Laparoscopic Cholecystectomy or Appendectomy (P05699)
A Phase 3 study testing Rocuronium, Sugammadex and Neostigmine in people with Anesthesia, General, run by Merck Sharp & Dohme LLC.
Trial summary
The current trial was designed to demonstrate faster recovery from a neuromuscular blockade (NMB) induced by rocuronium after reversal at 1-2 Post Tetanic Count (PTC) by 4.0 mg.kg-1 sugammadex compared to 50 µg.kg-1 neostigmine at reappearance of second twitch (T2) in participants undergoing laparoscopic… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Anesthesia, General
- What is being tested?
- Rocuronium, Sugammadex and Neostigmine
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 140 participants
- Where
- No sites listed yet
- Study dates
- 16 Jul 2008to 3 May 2009
- Phase
- Phase 3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Participants of American Society of Anesthesiologists class 1-3
- Participants of age above or equal to the age of 18 years
- Participants who are scheduled to undergo a laparoscopic cholecystectomy or appendectomy under general anesthesia requiring neuromuscular relaxation with rocuronium, and if applicable, maintenance of neuromuscular blockade
- Participants who have given written informed consent
Who cannot join
- Participants in whom a difficult intubation because of anatomical malformations is expected
- Participants known or suspected to have neuromuscular disorders affecting NMB
- Participants known or suspected to have a significant renal dysfunction
- Participants known or suspected to have a severe hepatic dysfunction
- Participants known or suspected to have (family) history of malignant hyperthermia
- Participants known or suspected to have an allergy to opioids, muscle relaxants or other medication used during general anesthesia
Show all 11Show fewer
- Participants in whom the use of neostigmine and/or atropine is contraindicated
- Female participants who are pregnant (pregnancy will be excluded for women both from medical history and by a human chorionic gonadotropin (hCG) test within 24h before surgery, except for women who are not of childbearing potential, i.e. at least 2 years menopausal or have undergone tubal ligation or a hysterectomy)
- Female participants who are breast-feeding
- Participants who participated in another clinical trial not pre-approved by the sponsor, within 30 days of entering into trial 19.4.318 (P05699)
- Participants who have already participated in a sugammadex trial
About this study
Official title: A Multi-center, Randomized, Parallel-group, Comparative, Active-controlled, Safety-assessor Blinded Trial in Adult Subjects Comparing the Efficacy and Safety of Sugammadex (SCH 900616, ORG 25969) Administered at 1-2 PTC With Neostigmine Administered at Reappearance of T2 in Subjects Undergoing Laparoscopic Cholecystectomy or Appendectomy Under Propofol Anesthesia
The current trial was designed to demonstrate faster recovery from a neuromuscular blockade (NMB) induced by rocuronium after reversal at 1-2 Post Tetanic Count (PTC) by 4.0 mg.kg-1 sugammadex compared to 50 µg.kg-1 neostigmine at reappearance of second twitch (T2) in participants undergoing laparoscopic cholecystectomy or appendectomy under propofol anesthesia, to compare safety and to evaluate operating room and Post Anesthetic Care Unit (PACU) length of stay.
Read the detailed description
In those surgical procedures where a neuromuscular block is desired for intubation and/or avoid unwanted muscular activity, anesthesiologists may use a more profound NMB until the end of surgery, e.g. in open abdominal procedures or during laparoscopic procedures in order to improve surgical conditions. Reversal with sugammadex at a dose of 4.0 mg.kg-1 at 1-2 PTC after an intubation dose of 0.6 mg.kg-1 or maintenance dosing rocuronium has been found to be both safe and efficacious in previous clinical trials but has never been investigated exclusively in participants undergoing laparoscopic cholecystectomy or appendectomy.
With sugammadex profound muscle relaxation may now be provided right up to the end of the surgical procedure. This may lead to improved Patient Outcomes, such as improvement in the time from end of surgery to the discharge to the PACU. In this multi-center, randomized, parallel-group, active-controlled, safety-assessor blinded trial such benefits will be further investigated.
- Conditions
- Anesthesia, General
- Being tested
- Rocuronium, Sugammadex, Neostigmine, Atropine
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
RocuroniumDrug
Also called rocuronium bromide, Esmeron®
Participants will receive an intravenous (i.v.) single bolus dose of 0.6 mg.kg-1 rocuronium. After this dose, maintenance doses of 0.1-0.2 mg.kg-1 rocuronium may be given.
SugammadexDrug
Also called Org 25969, SCH 900616, MK-8616, Bridion®
After the last dose of rocuronium has been administered, participants will receive, according to the randomization, a single bolus dose of 4.0 mg.kg-1 sugammadex at 1-2 PTC.
NeostigmineDrug
Also called Prostigmin®
After the last dose of rocuronium has been administered, participants will receive, according to the randomization, 50 μg.kg-1 neostigmine (with atropine in a ratio of 5:1 for neostigmine:atropine) at reappearance of T2.
AtropineDrug
Also called atropine sulfate
After the last dose of rocuronium has been administered, participants will receive, according to randomization, 10 μg.kg-1 atropine (with neostigmine in a ratio of 5:1 for neostigmine:atropine) at reappearance of T2.
| Study group | Role | What they receive |
|---|---|---|
| Sugammadex | Experimental | 4.0 mg.kg-1 sugammadex at 1-2 PTC Receives: Drug: Rocuronium; Drug: Sugammadex |
| Neostigmine | Experimental | 50 µg.kg-1 neostigmine (with atropine in a ratio of 5:1 for neostigmine:atropine) at reappearance of T2 Receives: Drug: Rocuronium; Drug: Neostigmine; Drug: Atropine |
What is being measured
The primary outcome is the main question the study is designed to answer.
Time From Start of Administration of Investigational Medicinal Product (IMP, Sugammadex or Neostigmine) to Recovery of the Fourth Twitch/First Twitch (T4/T1) Ratio to 0.9
Neuromuscular functioning was monitored by applying repetitive Train-Of-Four (TOF) electrical stimulations to the ulnar nerve every 15 seconds \& assessing twitch response at the adductor pollicis muscle. T1 and T4 refer to the magnitudes (heights) of the first and fourth twitches, respectively, after TOF nerve stimulation. The T4/T1 Ratio (expressed as a decimal of up to 1.0) indicates the extent of recovery from neuromuscular blockade (NMB). In this study, twitch responses were recorded until the T4/T1 Ratio reached >= 0.9, the minimum acceptable ratio that indicated recovery from NMB. A faster time to recovery of the T4/T1 Ratio to 0.9 indicates a faster recovery from NMB.
Measured: From start of IMP administration to recovery of T4/T1 ratio to 0.9 (ranging from ~2 minutes to ~9 minutes)
Secondary outcomes (4)
Time From Start of Administration of IMP to Recovery of the T4/T1 Ratio to 0.7
Neuromuscular functioning was monitored by applying repetitive TOF electrical stimulations to the ulnar nerve every 15 seconds \& assessing twitch response at the adductor pollicis muscle. T1 and T4 refer to the magnitudes (heights) of the first and fourth twitches, respectively, after TOF nerve stimulation. The T4/T1 Ratio (expressed as a decimal of up to 1.0). A faster time to recovery of the T4/T1 Ratio to 0.7 indicates a faster recovery from NMB.
Measured: From start of IMP administration to recovery of T4/T1 Ratio to 0.7 (ranging from ~2 minutes to ~5 minutes)
Time From Start of Administration of IMP to Recovery of the T4/T1 Ratio to 0.8
Neuromuscular functioning was monitored by applying repetitive TOF electrical stimulations to the ulnar nerve every 15 seconds \& assessing twitch response at the adductor pollicis muscle. T1 and T4 refer to the magnitudes (heights) of the first and fourth twitches, respectively, after TOF nerve stimulation. The T4/T1 Ratio (expressed as a decimal of up to 1.0). A faster time to recovery of the T4/T1 Ratio to 0.8 indicates a faster recovery from NMB.
Measured: From start of IMP administration to recovery of T4/T1 Ratio to 0.8 (ranging from ~2 minutes to ~6 minutes)
Number of Participants Who Experienced Pre-treatment Serious Adverse Events (SAEs) and Post-treatment SAEs
An SAE is defined as any untoward medical occurrence that at any dose: results in death; is life-threatening; requires in-patient hospitalization or prolongation of existing hospitalization; results in persistent or significant disability/incapacity; or is a congenital anomaly/birth defect.
Participants were monitored for occurrence SAEs for up to 7 days after last dose IMP. Pre-treatment refers to the period from signing of the informed consent up to start of IMP administration. Post-treatment refers to the period from start of IMP administration to 7 days after IMP administration.
Measured: From signing of informed consent to end of trial (7 days after surgery)
Number of Participants Who Experienced Pre-treatment Non-serious Adverse Events (AEs) and Post-treatment Non-serious AEs
An AE is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body, whether or not considered related to the use of the product. Participants were monitored for occurrence AEs for up to 7 days after last dose IMP. Pre-treatment refers to the period from signing of the informed consent up to start of IMP administration. Post-treatment refers to the period from start of IMP administration to 7 days after IMP administration.
Measured: From signing of informed consent to end of trial (7 days after surgery)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted30 Jul 2008 (estimated)
- Study start16 Jul 2008
- Primary completion1 Apr 2009
- Study completion3 May 2009
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (7)Papers the sponsor has linked to this study.
- Other trials for Anesthesia, GeneralStudies of the same condition, open and under way.
- More trials run by Merck Sharp & Dohme LLCThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Outcomes assessor
- Enrolment
- 140 participants (actual)
Sponsor and investigators
- Lead sponsor
- Merck Sharp & Dohme LLC
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00724932
- Sponsor's protocol ID
- P05699
- Other IDs
- 19.4.318, MK-8616-002, 2007-007951-14
- Status last verified
- Apr 2017
- First submitted
- 28 Jul 2008
- Last updated
- 16 May 2017
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
Publications
Suresh D, Carter JA, Whitehead JP, Goldhill DR, Flynn PJ. Cardiovascular changes at antagonism of atracurium. Effects of different doses of premixed neostigmine and glycopyrronium in a ratio of 5:1. Anaesthesia. 1991 Oct;46(10):877-80. doi: 10.1111/j.1365-2044.1991.tb09609.x.
PubMed 1952007Caldwell JE. Reversal of residual neuromuscular block with neostigmine at one to four hours after a single intubating dose of vecuronium. Anesth Analg. 1995 Jun;80(6):1168-74. doi: 10.1097/00000539-199506000-00018.
PubMed 7762847Irie T, Uekama K. Pharmaceutical applications of cyclodextrins. III. Toxicological issues and safety evaluation. J Pharm Sci. 1997 Feb;86(2):147-62. doi: 10.1021/js960213f.
PubMed 9040088Apfel CC, Kranke P, Eberhart LH, Roos A, Roewer N. Comparison of predictive models for postoperative nausea and vomiting. Br J Anaesth. 2002 Feb;88(2):234-40. doi: 10.1093/bja/88.2.234.
PubMed 11883387Apfel CC, Laara E, Koivuranta M, Greim CA, Roewer N. A simplified risk score for predicting postoperative nausea and vomiting: conclusions from cross-validations between two centers. Anesthesiology. 1999 Sep;91(3):693-700. doi: 10.1097/00000542-199909000-00022.
PubMed 10485781Aldrete JA, Kroulik D. A postanesthetic recovery score. Anesth Analg. 1970 Nov-Dec;49(6):924-34. No abstract available.
PubMed 5534693Geldner G, Niskanen M, Laurila P, Mizikov V, Hubler M, Beck G, Rietbergen H, Nicolayenko E. A randomised controlled trial comparing sugammadex and neostigmine at different depths of neuromuscular blockade in patients undergoing laparoscopic surgery. Anaesthesia. 2012 Sep;67(9):991-8. doi: 10.1111/j.1365-2044.2012.07197.x. Epub 2012 Jun 14.
PubMed 22698066
Study at a glance
From the registry record, last updated by the sponsor on 16 May 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Multi-center, Randomized, Parallel-group, Comparative, Active-controlled, Safety-assessor Blinded Trial in Adult Subjects Comparing the Efficacy and Safety of Sugammadex (SCH 900616, ORG 25969) Administered at 1-2 PTC With Neostigmine Administered at Reappearance of T2 in Subjects Undergoing Laparoscopic Cholecystectomy or Appendectomy Under Propofol Anesthesia
- ClinicalTrials.gov ID
- NCT00724932
- Acronym / sponsor ID
- P05699
- Conditions
- Anesthesia, General
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 140 participants (actual)
- Lead sponsor
- Merck Sharp & Dohme LLCIndustry (pharma, biotech, devices)
- Study start
- 16 Jul 2008 (actual)
- Primary completion
- 1 Apr 2009 (actual)
- Study completion
- 3 May 2009 (actual)
- First posted
- 30 Jul 2008 (estimated)
- Results
- Posted 29 Apr 2013
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The current trial was designed to demonstrate faster recovery from a neuromuscular blockade (NMB) induced by rocuronium after reversal at 1-2 Post Tetanic Count (PTC) by 4.0 mg.kg-1 sugammadex compared to 50 µg.kg-1 neostigmine at reappearance of second twitch (T2) in participants undergoing laparoscopic cholecystectomy or appendectomy under propofol anesthesia, to compare safety and to evaluate operating room and Post Anesthetic Care Unit (PACU) length of stay.
Detailed description
In those surgical procedures where a neuromuscular block is desired for intubation and/or avoid unwanted muscular activity, anesthesiologists may use a more profound NMB until the end of surgery, e.g. in open abdominal procedures or during laparoscopic procedures in order to improve surgical conditions. Reversal with sugammadex at a dose of 4.0 mg.kg-1 at 1-2 PTC after an intubation dose of 0.6 mg.kg-1 or maintenance dosing rocuronium has been found to be both safe and efficacious in previous clinical trials but has never been investigated exclusively in participants undergoing laparoscopic cholecystectomy or appendectomy.
With sugammadex profound muscle relaxation may now be provided right up to the end of the surgical procedure. This may lead to improved Patient Outcomes, such as improvement in the time from end of surgery to the discharge to the PACU. In this multi-center, randomized, parallel-group, active-controlled, safety-assessor blinded trial such benefits will be further investigated.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Sugammadex | Experimental | Drug: Rocuronium, Drug: Sugammadex4.0 mg.kg-1 sugammadex at 1-2 PTC |
| Neostigmine | Experimental | Drug: Rocuronium, Drug: Neostigmine, Drug: Atropine50 µg.kg-1 neostigmine (with atropine in a ratio of 5:1 for neostigmine:atropine) at reappearance of T2 |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
- Participants of American Society of Anesthesiologists class 1-3
- Participants of age above or equal to the age of 18 years
- Participants who are scheduled to undergo a laparoscopic cholecystectomy or appendectomy under general anesthesia requiring neuromuscular relaxation with rocuronium, and if applicable, maintenance of neuromuscular blockade
- Participants who have given written informed consent
Key exclusion criteria (11 listed)
- Participants in whom a difficult intubation because of anatomical malformations is expected
- Participants known or suspected to have neuromuscular disorders affecting NMB
- Participants known or suspected to have a significant renal dysfunction
- Participants known or suspected to have a severe hepatic dysfunction
- Participants known or suspected to have (family) history of malignant hyperthermia
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| RocuroniumAlso: rocuronium bromide, Esmeron®Participants will receive an intravenous (i.v.) single bolus dose of 0.6 mg.kg-1 rocuronium. After this dose, maintenance doses of 0.1-0.2 mg.kg-1 rocuronium may be given. | Drug | Neostigmine, Sugammadex |
| SugammadexAlso: Org 25969, SCH 900616, MK-8616, Bridion®After the last dose of rocuronium has been administered, participants will receive, according to the randomization, a single bolus dose of 4.0 mg.kg-1 sugammadex at 1-2 PTC. | Drug | Sugammadex |
| NeostigmineAlso: Prostigmin®After the last dose of rocuronium has been administered, participants will receive, according to the randomization, 50 μg.kg-1 neostigmine (with atropine in a ratio of 5:1 for neostigmine:atropine) at reappearance of T2. | Drug | Neostigmine |
| AtropineAlso: atropine sulfateAfter the last dose of rocuronium has been administered, participants will receive, according to randomization, 10 μg.kg-1 atropine (with neostigmine in a ratio of 5:1 for neostigmine:atropine) at reappearance of T2. | Drug | Neostigmine |
Primary outcome
Time From Start of Administration of Investigational Medicinal Product (IMP, Sugammadex or Neostigmine) to Recovery of the Fourth Twitch/First Twitch (T4/T1) Ratio to 0.9
Time frame: From start of IMP administration to recovery of T4/T1 ratio to 0.9 (ranging from ~2 minutes to ~9 minutes)
Neuromuscular functioning was monitored by applying repetitive Train-Of-Four (TOF) electrical stimulations to the ulnar nerve every 15 seconds \& assessing twitch response at the adductor pollicis muscle. T1 and T4 refer to the magnitudes (heights) of the first and fourth twitches, respectively, after TOF nerve stimulation. The T4/T1 Ratio (expressed as a decimal of up to 1.0) indicates the extent of recovery from neuromuscular blockade (NMB). In this study, twitch responses were recorded until the T4/T1 Ratio reached >= 0.9, the minimum acceptable ratio that indicated recovery from NMB. A faster time to recovery of the T4/T1 Ratio to 0.9 indicates a faster recovery from NMB.
4 secondary outcomes
Time From Start of Administration of IMP to Recovery of the T4/T1 Ratio to 0.7
Time frame: From start of IMP administration to recovery of T4/T1 Ratio to 0.7 (ranging from ~2 minutes to ~5 minutes)
Time From Start of Administration of IMP to Recovery of the T4/T1 Ratio to 0.8
Time frame: From start of IMP administration to recovery of T4/T1 Ratio to 0.8 (ranging from ~2 minutes to ~6 minutes)
Number of Participants Who Experienced Pre-treatment Serious Adverse Events (SAEs) and Post-treatment SAEs
Time frame: From signing of informed consent to end of trial (7 days after surgery)
Number of Participants Who Experienced Pre-treatment Non-serious Adverse Events (AEs) and Post-treatment Non-serious AEs
Time frame: From signing of informed consent to end of trial (7 days after surgery)
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 16 May 2017.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 1952007Suresh D, Carter JA, Whitehead JP, Goldhill DR, Flynn PJ. Cardiovascular changes at antagonism of atracurium. Effects of different doses of premixed neostigmine and glycopyrronium in a ratio of 5:1. Anaesthesia. 1991 Oct;46(10):877-80. doi: 10.1111/j.1365-2044.1991.tb09609.x.
- Background: PubMed 7762847Caldwell JE. Reversal of residual neuromuscular block with neostigmine at one to four hours after a single intubating dose of vecuronium. Anesth Analg. 1995 Jun;80(6):1168-74. doi: 10.1097/00000539-199506000-00018.
- Background: PubMed 9040088Irie T, Uekama K. Pharmaceutical applications of cyclodextrins. III. Toxicological issues and safety evaluation. J Pharm Sci. 1997 Feb;86(2):147-62. doi: 10.1021/js960213f.
- Background: PubMed 11883387Apfel CC, Kranke P, Eberhart LH, Roos A, Roewer N. Comparison of predictive models for postoperative nausea and vomiting. Br J Anaesth. 2002 Feb;88(2):234-40. doi: 10.1093/bja/88.2.234.
- Background: PubMed 10485781Apfel CC, Laara E, Koivuranta M, Greim CA, Roewer N. A simplified risk score for predicting postoperative nausea and vomiting: conclusions from cross-validations between two centers. Anesthesiology. 1999 Sep;91(3):693-700. doi: 10.1097/00000542-199909000-00022.
- Background: PubMed 5534693Aldrete JA, Kroulik D. A postanesthetic recovery score. Anesth Analg. 1970 Nov-Dec;49(6):924-34. No abstract available.
- Results publication: PubMed 22698066Geldner G, Niskanen M, Laurila P, Mizikov V, Hubler M, Beck G, Rietbergen H, Nicolayenko E. A randomised controlled trial comparing sugammadex and neostigmine at different depths of neuromuscular blockade in patients undergoing laparoscopic surgery. Anaesthesia. 2012 Sep;67(9):991-8. doi: 10.1111/j.1365-2044.2012.07197.x. Epub 2012 Jun 14.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Rocuronium, Sugammadex and Neostigmine in people with Anesthesia, General, run by Merck Sharp & Dohme LLC.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 16 May 2017. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 29 Apr 2013). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Time From Start of Administration of Investigational Medicinal Product (IMP, Sugammadex or Neostigmine) to Recovery of the Fourth Twitch/First Twitch (T4/T1) Ratio to 0.9 (time frame: From start of IMP administration to recovery of T4/T1 ratio to 0.9 (ranging from ~2 minutes to ~9 minutes)). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00724932, which also lists 7 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 May 2017.