Depressive SymptomsPhase 4NCT02305394
Effect of Subanesthetic Dose of Ketamine Combined With Propofol on Cognitive Function in Depressive Patients Undergoing Electroconvulsive Therapy
A Phase 4 study testing ketamine and propofol and propofol and normal saline in people with Depressive Symptoms and Impaired Cognition, run by First Affiliated Hospital of Chongqing Medical University at 1 site in China.
Trial summary
Electroconvulsive therapy (ECT) is an effective treatment for depression compared with the current antidepressant agents,but the most important side effect is cognitive dysfunction. Read more about this study
- Who is it for?
- Ages 18 to 65 years
- Conditions the study is for
- Depressive Symptoms, Impaired Cognition, Electroconvulsive Therapy
- What is being tested?
- ketamine and propofol and propofol and normal saline
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 132 participants
- Where
- 1 siteChina
- Study dates
- Jan 2015to Feb 2017
- Phase
- Phase 4
- Are there results?
- None posted in the registry
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 to 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- diagnosed with moderate or severe depression according to Diagnostic and Statistical Manual of Mental Disorders
- aged from 18 to 65 years old
Who cannot join
- cerebrovascular malformation, arterial aneurysm, hypertension, or glaucoma;
- classification of American Society of Anesthesiologists physical status score IV or V;
- complications such as respiratory disease, cardiovascular disease, intracranial hypertension, cerebral vascular disorder;
- presence of a foreign body such as pacemaker, intracranial electrode, and clips;
- history of seizures;
- history of drug abuse;
Show all 11Show fewer
- concomitant presence of a mental disorder;
- pregnancy;
- history of serious adverse effects related to anesthetics;
- refusal to consent for the study, or refusal to undergo one single ECT during the first week of therapy.
- hyperthyreosis
Trial locations and contacts
1 site in 1 country.
China1 site
China,Chongqing The First Affiliated Hospital of Chongqing Medical University
Chongqing, Chongqing Municipality, 400016
Su Min, MD, +86-23-89011068, ms89011068@163.com
About this study
Official title: Effect of Subanesthetic Dose of Ketamine Combined With Propofol on Cognitive Function in Depressive Patients Undergoing Electroconvulsive Therapy ---a Randomized Control Double-Blind Clinical Trial
Electroconvulsive therapy (ECT) is an effective treatment for depression compared with the current antidepressant agents,but the most important side effect is cognitive dysfunction. The purpose of this study is to determine whether subanesthetic dose of ketamine combined with propofol is superior to propofol anesthesia alone in improving cognitive function in depressive patients undergoing ECT.
Read the detailed description
Depression is one of the most debilitating and widespread illnesses affecting up to 20% of individuals in their lifetime. However, the current antidepressant agents take weeks to work, and fail to help at least 40% of depressed patients. Electroconvulsive therapy (ECT) is a remarkably effective treatment for depression, but its use is limited by cognitive dysfunction.
As a result, it is becoming a clinical problem which need to be settled urgently. Previous clinical study showed that subanesthetic dose of ketamine could play a role in antidepressant effects with safety and minimal positive psychotic symptoms.The investigators also found that subanesthetic dose of ketamine combined with other anesthetics could improve cognitive function in depressive rats receiving electroconvulsive shock (a model for analogy with ECT). Few clinical researches concerned the effects of subanesthetic dose of ketamine combined with propofol anesthesia on cognitive function in patients after ECT, therefore the investigators conduct this randomized controlled double-blind trial. In this study, cognitive function will be rated by Mini-Mental State examination score.
- Being tested
- ketamine and propofol, propofol and normal saline
- Keywords
- ketamine, Electroconvulsive Therapy, Cognitive Function
- Medical subject headings
- Depression, Cognition Disorders
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
ketamine and propofolDrug
propofol 1.5 mg/kg and ketamine 0.3 mg/kg will be administered to participants separately by intravenous infusion.
propofol and normal salineDrug
propofol 1.5 mg/kg and normal saline [weight(kg)×0.3÷10]ml will be administered to participants separately by intravenous infusion.
| Study group | Role | What they receive |
|---|---|---|
| PK group (ketamine and propofol) | Experimental | propofol 1.5 mg/kg and ketamine 0.3 mg/kg will be administered to participants separately by intravenous infusion.When patients become unconscious, succinylcholine 1 mg/kg (a muscle relaxant) will be administered intravenously. After 1 minute of succinylcholine infused, ECT will be performed with bitemporal electrode placement using a stimulus dose of 1.0-millisecond pulse width, 60-Hz frequency, 6.0-second stimulus duration, and 0.8-A maximal stimulus intensity. Receives: Drug: ketamine and propofol |
| P group (propofol group) | Active comparator | propofol 1.5 mg/kg and normal saline [weight(kg)×0.3÷10]ml will be administered to participants separately by intravenous infusion.When patients become unconscious, succinylcholine 1 mg/kg (a muscle relaxant) will be administered intravenously. After 1 minute of succinylcholine infused, ECT will be performed with bitemporal electrode placement using a stimulus dose of 1.0-millisecond pulse width, 60-Hz frequency, 6.0-second stimulus duration, and 0.8-A maximal stimulus intensity. Receives: Drug: propofol and normal saline |
What is being measured
The primary outcome is the main question the study is designed to answer.
Mini-Mental State examination score
Mini-Mental State examination score will be measured at 24 hours after the sixth ECT.
Measured: at 24 hours after the sixth ECT
Secondary outcomes (5)
Mini-Mental State examination score
Mini-Mental State examination score will be measured at 24 hours before the first ECT and 24 hours after each ECT, except the sixth ECT.
Measured: at 24 hours before the first ECT and 24 hours after each ECT, except the sixth ECT.
Effects on Antidepression (Hamilton Depression Rating Scale(HDRS)
Effect on antidepression will be measured by 24-item Hamilton Depression Rating Scale(HDRS)
Measured: at 24 hours before the first ECT and 24 hours after each ECT
Seizure Duration and Seizure Energy Index
Seizure duration and Seizure energy index will be recorded by the ECT apparatus.
Measured: at 30 seconds after each ECT
Brief Psychiatric Rating Scale(BPRS)
Brief Psychiatric Rating Scale is related to psychotomimetic side-effect.
Measured: 60 minutes prior to the first ECT and at 40, 80, 110, and 230 minutes after each ECT
Adverse Effects include nausea, vomit, headache, tachycardia and increased blood pressure.
Adverse effects include nausea, vomit, headache, tachycardia and increased blood pressure.
Measured: at 40 minutes after each ECT
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted2 Dec 2014 (estimated)
- Study startJan 2015
- Primary completionDec 2016 (estimated)
- Study completionFeb 2017 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (15)Papers the sponsor has linked to this study.
- Other trials for Depressive SymptomsStudies of the same condition, open and under way.
- More trials run by First Affiliated Hospital of Chongqing Medical UniversityThe 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 4
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Outcomes assessor
- Enrolment
- 132 participants (estimated)
Sponsor and investigators
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Min Su, First Affiliated Hospital of Chongqing Medical University
- Investigators
- Su Min, Principal investigator, First Affiliated Hospital of Chongqing Medical University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02305394
- Sponsor's protocol ID
- CYYYMZ-006
- Status last verified
- Nov 2014
- First submitted
- 19 Nov 2014
- Last updated
- 2 Dec 2014
- Results posted
- No
- Data monitoring committee
- No
Publications
Machado-Vieira R, Salvadore G, Diazgranados N, Zarate CA Jr. Ketamine and the next generation of antidepressants with a rapid onset of action. Pharmacol Ther. 2009 Aug;123(2):143-50. doi: 10.1016/j.pharmthera.2009.02.010. Epub 2009 May 3.
PubMed 19397926Garcia LS, Comim CM, Valvassori SS, Reus GZ, Barbosa LM, Andreazza AC, Stertz L, Fries GR, Gavioli EC, Kapczinski F, Quevedo J. Acute administration of ketamine induces antidepressant-like effects in the forced swimming test and increases BDNF levels in the rat hippocampus. Prog Neuropsychopharmacol Biol Psychiatry. 2008 Jan 1;32(1):140-4. doi: 10.1016/j.pnpbp.2007.07.027. Epub 2007 Aug 8.
PubMed 17884272Berton O, Nestler EJ. New approaches to antidepressant drug discovery: beyond monoamines. Nat Rev Neurosci. 2006 Feb;7(2):137-51. doi: 10.1038/nrn1846.
PubMed 16429123Pigot M, Andrade C, Loo C. Pharmacological attenuation of electroconvulsive therapy--induced cognitive deficits: theoretical background and clinical findings. J ECT. 2008 Mar;24(1):57-67. doi: 10.1097/YCT.0b013e3181616c14.
PubMed 18379337aan het Rot M, Collins KA, Murrough JW, Perez AM, Reich DL, Charney DS, Mathew SJ. Safety and efficacy of repeated-dose intravenous ketamine for treatment-resistant depression. Biol Psychiatry. 2010 Jan 15;67(2):139-45. doi: 10.1016/j.biopsych.2009.08.038.
PubMed 19897179Chen J, Peng LH, Luo J, Liu L, Lv F, Li P, Ao L, Hao XC, Min S. Effects of low-dose ketamine combined with propofol on phosphorylation of AMPA receptor GluR1 subunit and GABAA receptor in hippocampus of stressed rats receiving electroconvulsive shock. J ECT. 2015 Mar;31(1):50-6. doi: 10.1097/YCT.0000000000000148.
PubMed 24831997Berman RM, Cappiello A, Anand A, Oren DA, Heninger GR, Charney DS, Krystal JH. Antidepressant effects of ketamine in depressed patients. Biol Psychiatry. 2000 Feb 15;47(4):351-4. doi: 10.1016/s0006-3223(99)00230-9.
PubMed 10686270Zarate CA Jr, Singh JB, Carlson PJ, Brutsche NE, Ameli R, Luckenbaugh DA, Charney DS, Manji HK. A randomized trial of an N-methyl-D-aspartate antagonist in treatment-resistant major depression. Arch Gen Psychiatry. 2006 Aug;63(8):856-64. doi: 10.1001/archpsyc.63.8.856.
PubMed 16894061Price RB, Nock MK, Charney DS, Mathew SJ. Effects of intravenous ketamine on explicit and implicit measures of suicidality in treatment-resistant depression. Biol Psychiatry. 2009 Sep 1;66(5):522-6. doi: 10.1016/j.biopsych.2009.04.029. Epub 2009 Jul 9.
PubMed 19545857Ibrahim L, Diazgranados N, Luckenbaugh DA, Machado-Vieira R, Baumann J, Mallinger AG, Zarate CA Jr. Rapid decrease in depressive symptoms with an N-methyl-d-aspartate antagonist in ECT-resistant major depression. Prog Neuropsychopharmacol Biol Psychiatry. 2011 Jun 1;35(4):1155-9. doi: 10.1016/j.pnpbp.2011.03.019. Epub 2011 Apr 3.
PubMed 21466832McDaniel WW, Sahota AK, Vyas BV, Laguerta N, Hategan L, Oswald J. Ketamine appears associated with better word recall than etomidate after a course of 6 electroconvulsive therapies. J ECT. 2006 Jun;22(2):103-6. doi: 10.1097/00124509-200606000-00005.
PubMed 16801824Krystal AD, Weiner RD, Dean MD, Lindahl VH, Tramontozzi LA 3rd, Falcone G, Coffey CE. Comparison of seizure duration, ictal EEG, and cognitive effects of ketamine and methohexital anesthesia with ECT. J Neuropsychiatry Clin Neurosci. 2003 Winter;15(1):27-34. doi: 10.1176/jnp.15.1.27.
PubMed 12556568Kranaster L, Kammerer-Ciernioch J, Hoyer C, Sartorius A. Clinically favourable effects of ketamine as an anaesthetic for electroconvulsive therapy: a retrospective study. Eur Arch Psychiatry Clin Neurosci. 2011 Dec;261(8):575-82. doi: 10.1007/s00406-011-0205-7. Epub 2011 Mar 13.
PubMed 21400226Wang X, Chen Y, Zhou X, Liu F, Zhang T, Zhang C. Effects of propofol and ketamine as combined anesthesia for electroconvulsive therapy in patients with depressive disorder. J ECT. 2012 Jun;28(2):128-32. doi: 10.1097/YCT.0b013e31824d1d02.
PubMed 22622291Kellner CH, Briggs MC, Pasculli RM, Bryson EO. Antidepressant effect of the first electroconvulsive therapy with ketamine and/or propofol. J ECT. 2013 Jun;29(2):149. doi: 10.1097/YCT.0b013e3182702980. No abstract available.
PubMed 23703230
Study at a glance
From the registry record, last updated by the sponsor on 2 Dec 2014. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effect of Subanesthetic Dose of Ketamine Combined With Propofol on Cognitive Function in Depressive Patients Undergoing Electroconvulsive Therapy ---a Randomized Control Double-Blind Clinical Trial
- ClinicalTrials.gov ID
- NCT02305394
- Acronym / sponsor ID
- CYYYMZ-006
- Keywords
- ketamine, Electroconvulsive Therapy, Cognitive Function
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 132 participants (estimated)
- Lead sponsor
- First Affiliated Hospital of Chongqing Medical UniversityUniversity, hospital or other
- Study start
- Jan 2015
- Primary completion
- Dec 2016 (estimated)
- Study completion
- Feb 2017 (estimated)
- First posted
- 2 Dec 2014 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Electroconvulsive therapy (ECT) is an effective treatment for depression compared with the current antidepressant agents,but the most important side effect is cognitive dysfunction. The purpose of this study is to determine whether subanesthetic dose of ketamine combined with propofol is superior to propofol anesthesia alone in improving cognitive function in depressive patients undergoing ECT.
Detailed description
Depression is one of the most debilitating and widespread illnesses affecting up to 20% of individuals in their lifetime. However, the current antidepressant agents take weeks to work, and fail to help at least 40% of depressed patients. Electroconvulsive therapy (ECT) is a remarkably effective treatment for depression, but its use is limited by cognitive dysfunction.
As a result, it is becoming a clinical problem which need to be settled urgently. Previous clinical study showed that subanesthetic dose of ketamine could play a role in antidepressant effects with safety and minimal positive psychotic symptoms.The investigators also found that subanesthetic dose of ketamine combined with other anesthetics could improve cognitive function in depressive rats receiving electroconvulsive shock (a model for analogy with ECT). Few clinical researches concerned the effects of subanesthetic dose of ketamine combined with propofol anesthesia on cognitive function in patients after ECT, therefore the investigators conduct this randomized controlled double-blind trial. In this study, cognitive function will be rated by Mini-Mental State examination score.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| PK group (ketamine and propofol) | Experimental | Drug: ketamine and propofolpropofol 1.5 mg/kg and ketamine 0.3 mg/kg will be administered to participants separately by intravenous infusion.When patients become unconscious, succinylcholine 1 mg/kg (a muscle relaxant) will be administered intravenously. After 1 minute of succinylcholine infused, ECT will be performed with bitemporal electrode placement using a stimulus dose of 1.0-millisecond pulse width, 60-Hz frequency, 6.0-second stimulus duration, and 0.8-A maximal stimulus intensity. |
| P group (propofol group) | Active comparator | Drug: propofol and normal salinepropofol 1.5 mg/kg and normal saline [weight(kg)×0.3÷10]ml will be administered to participants separately by intravenous infusion.When patients become unconscious, succinylcholine 1 mg/kg (a muscle relaxant) will be administered intravenously. After 1 minute of succinylcholine infused, ECT will be performed with bitemporal electrode placement using a stimulus dose of 1.0-millisecond pulse width, 60-Hz frequency, 6.0-second stimulus duration, and 0.8-A maximal stimulus intensity. |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- diagnosed with moderate or severe depression according to Diagnostic and Statistical Manual of Mental Disorders
- aged from 18 to 65 years old
Key exclusion criteria (11 listed)
- cerebrovascular malformation, arterial aneurysm, hypertension, or glaucoma;
- classification of American Society of Anesthesiologists physical status score IV or V;
- complications such as respiratory disease, cardiovascular disease, intracranial hypertension, cerebral vascular disorder;
- presence of a foreign body such as pacemaker, intracranial electrode, and clips;
- history of seizures;
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 |
|---|---|---|
| ketamine and propofolpropofol 1.5 mg/kg and ketamine 0.3 mg/kg will be administered to participants separately by intravenous infusion. | Drug | PK group (ketamine and propofol) |
| propofol and normal salinepropofol 1.5 mg/kg and normal saline [weight(kg)×0.3÷10]ml will be administered to participants separately by intravenous infusion. | Drug | P group (propofol group) |
Primary outcome
Mini-Mental State examination score
Time frame: at 24 hours after the sixth ECT
Mini-Mental State examination score will be measured at 24 hours after the sixth ECT.
5 secondary outcomes
Mini-Mental State examination score
Time frame: at 24 hours before the first ECT and 24 hours after each ECT, except the sixth ECT.
Effects on Antidepression (Hamilton Depression Rating Scale(HDRS)
Time frame: at 24 hours before the first ECT and 24 hours after each ECT
Seizure Duration and Seizure Energy Index
Time frame: at 30 seconds after each ECT
Brief Psychiatric Rating Scale(BPRS)
Time frame: 60 minutes prior to the first ECT and at 40, 80, 110, and 230 minutes after each ECT
Adverse Effects include nausea, vomit, headache, tachycardia and increased blood pressure.
Time frame: at 40 minutes after each ECT
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 2 Dec 2014.
- Background: PubMed 19397926Machado-Vieira R, Salvadore G, Diazgranados N, Zarate CA Jr. Ketamine and the next generation of antidepressants with a rapid onset of action. Pharmacol Ther. 2009 Aug;123(2):143-50. doi: 10.1016/j.pharmthera.2009.02.010. Epub 2009 May 3.
- Background: PubMed 17884272Garcia LS, Comim CM, Valvassori SS, Reus GZ, Barbosa LM, Andreazza AC, Stertz L, Fries GR, Gavioli EC, Kapczinski F, Quevedo J. Acute administration of ketamine induces antidepressant-like effects in the forced swimming test and increases BDNF levels in the rat hippocampus. Prog Neuropsychopharmacol Biol Psychiatry. 2008 Jan 1;32(1):140-4. doi: 10.1016/j.pnpbp.2007.07.027. Epub 2007 Aug 8.
- Background: PubMed 16429123Berton O, Nestler EJ. New approaches to antidepressant drug discovery: beyond monoamines. Nat Rev Neurosci. 2006 Feb;7(2):137-51. doi: 10.1038/nrn1846.
- Background: PubMed 18379337Pigot M, Andrade C, Loo C. Pharmacological attenuation of electroconvulsive therapy--induced cognitive deficits: theoretical background and clinical findings. J ECT. 2008 Mar;24(1):57-67. doi: 10.1097/YCT.0b013e3181616c14.
- Background: PubMed 19897179aan het Rot M, Collins KA, Murrough JW, Perez AM, Reich DL, Charney DS, Mathew SJ. Safety and efficacy of repeated-dose intravenous ketamine for treatment-resistant depression. Biol Psychiatry. 2010 Jan 15;67(2):139-45. doi: 10.1016/j.biopsych.2009.08.038.
- Background: PubMed 24831997Chen J, Peng LH, Luo J, Liu L, Lv F, Li P, Ao L, Hao XC, Min S. Effects of low-dose ketamine combined with propofol on phosphorylation of AMPA receptor GluR1 subunit and GABAA receptor in hippocampus of stressed rats receiving electroconvulsive shock. J ECT. 2015 Mar;31(1):50-6. doi: 10.1097/YCT.0000000000000148.
- Background: PubMed 10686270Berman RM, Cappiello A, Anand A, Oren DA, Heninger GR, Charney DS, Krystal JH. Antidepressant effects of ketamine in depressed patients. Biol Psychiatry. 2000 Feb 15;47(4):351-4. doi: 10.1016/s0006-3223(99)00230-9.
- Background: PubMed 16894061Zarate CA Jr, Singh JB, Carlson PJ, Brutsche NE, Ameli R, Luckenbaugh DA, Charney DS, Manji HK. A randomized trial of an N-methyl-D-aspartate antagonist in treatment-resistant major depression. Arch Gen Psychiatry. 2006 Aug;63(8):856-64. doi: 10.1001/archpsyc.63.8.856.
- Background: PubMed 19545857Price RB, Nock MK, Charney DS, Mathew SJ. Effects of intravenous ketamine on explicit and implicit measures of suicidality in treatment-resistant depression. Biol Psychiatry. 2009 Sep 1;66(5):522-6. doi: 10.1016/j.biopsych.2009.04.029. Epub 2009 Jul 9.
- Background: PubMed 21466832Ibrahim L, Diazgranados N, Luckenbaugh DA, Machado-Vieira R, Baumann J, Mallinger AG, Zarate CA Jr. Rapid decrease in depressive symptoms with an N-methyl-d-aspartate antagonist in ECT-resistant major depression. Prog Neuropsychopharmacol Biol Psychiatry. 2011 Jun 1;35(4):1155-9. doi: 10.1016/j.pnpbp.2011.03.019. Epub 2011 Apr 3.
- Background: PubMed 16801824McDaniel WW, Sahota AK, Vyas BV, Laguerta N, Hategan L, Oswald J. Ketamine appears associated with better word recall than etomidate after a course of 6 electroconvulsive therapies. J ECT. 2006 Jun;22(2):103-6. doi: 10.1097/00124509-200606000-00005.
- Background: PubMed 12556568Krystal AD, Weiner RD, Dean MD, Lindahl VH, Tramontozzi LA 3rd, Falcone G, Coffey CE. Comparison of seizure duration, ictal EEG, and cognitive effects of ketamine and methohexital anesthesia with ECT. J Neuropsychiatry Clin Neurosci. 2003 Winter;15(1):27-34. doi: 10.1176/jnp.15.1.27.
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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.
Su Min principal investigator
First Affiliated Hospital of Chongqing Medical University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing ketamine and propofol and propofol and normal saline in people with Depressive Symptoms and Impaired Cognition, run by First Affiliated Hospital of Chongqing Medical University at 1 site in China.
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 2 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: status not confirmed, as of the sponsor's last update on 2 Dec 2014. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
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 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Qibin Chen, Master (023-89011061, 403497559@qq.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Mini-Mental State examination score (time frame: at 24 hours after the sixth ECT). 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 NCT02305394, which also lists 15 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 2 Dec 2014.