- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02123355
The Effect of Dexmedetomidine to Cognition of Geriatrics in Prolonged Surgery
The Effect of Dexmedetomidine to Cognition of Geriatrics in Prolonged Surgery,A Randomized Controlled Study
The incidence of postoperative cognitive dysfunction (POCD) is high and POCD affect the life quality and the prognosis of patients. Geriatrics is the independent risk factor of POCD, and POCD is also correlated with many other factors such as type of surgery, the duration of anesthesia and the anesthesia drugs used et al. So, the prevention and treatment of POCD in geriatrics is important.
Dexmedetomidine is found to have the effect of neuro-protection, but it is controversy whether Dexmedetomidine has the effect of neuro-protection in geriatrics, especially the prolonged surgery.
The purpose of this study is to explore the effect of Dexmedetomidine to the cognitive function at prolonged surgery in geriatrics in geriatrics.
Study Overview
Status
Conditions
Study Type
Enrollment (Anticipated)
Phase
- Phase 4
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Written informed consent
- Scheduled for elective abdominal surgery
- Age≥65 yrs
- Weight is within the range of ±20% of standard weight [standard weight=Height(cm)-80)×70﹪ for male and(Height(cm)-70)×60﹪] for female
- American society of anesthesia classification I~III
- Expected time of surgery is more than 4 hours -
Exclusion Criteria:
- Systolic blood pressure≥180 mm Hg or <90 mm Hg,diastolic blood pressure≥110 mm Hg or < 60 mm Hg;
- Serious cardiac,liver,kidney,lung, endocrine disease or sepsis.
- Allergy to trial drug or other contraindication;
- Difficult airway occurred before,or difficult airway possibly occurred and difficult to extubation
- History of mental illness and cerebral vascular disease
- History of unstable angina or myocardial infarction
- Education level<7 yrs
- Factors existed that affect cognition assessment such as language, visual sense,auditory sense disorders.
- Abuse of narcotic analgesia or suspected;
- Neuromuscular diseases;
- Mentally unstable or has a mental illness;
- Pregnant or breast-feeding women;
- Attended other trial past 30 days; -
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Triple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Dexmedetomidine
Dexmedetomidine is given at 0.5μg/kg/h by continuous infusion and is stopped to given 30 minutes before the surgery is over.
|
Midazolam 0.05 mg/kg、Propofol 1.0 mg/kg、Sufentanyl 3μg/kg、Victracurium 0.1 mg/kg sequential intravenous injection
After muscle relaxed and loss of eyelash reflex of the patients, intubation is done,then mechanical ventilation is performed, and maintain the PETCO2于35~40 mmHg,pulse oxygen saturation is more than 95%.
Sevoflurane(1%-2%)is inspirated, and remifentanil 0.1-0.5μg/kg//min is continuously pumped,vecuronium 0.03 mg/kg is injected intermittently.
Dexmedetomidine is given at 0.5μg/kg/h by continuous infusion and is stopped to given 30 minutes before the surgery is over.
|
Sham Comparator: Normal saline
Normal saline is given at 0.5μg/kg/h by continuous infusion and is stopped to given 30 minutes before the surgery is over.
|
Midazolam 0.05 mg/kg、Propofol 1.0 mg/kg、Sufentanyl 3μg/kg、Victracurium 0.1 mg/kg sequential intravenous injection
After muscle relaxed and loss of eyelash reflex of the patients, intubation is done,then mechanical ventilation is performed, and maintain the PETCO2于35~40 mmHg,pulse oxygen saturation is more than 95%.
Sevoflurane(1%-2%)is inspirated, and remifentanil 0.1-0.5μg/kg//min is continuously pumped,vecuronium 0.03 mg/kg is injected intermittently.
Normal saline is given at 0.5μg/kg/h by continuous infusion and is stopped to given 30 minutes before the surgery is over.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change from baseline in cognitive function at 7 days
Time Frame: Baseline, the 7th day after the surgery
|
|
Baseline, the 7th day after the surgery
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Brain injury assessment
Time Frame: From entering the operating room to 48 hours after the surgery
|
|
From entering the operating room to 48 hours after the surgery
|
Inflammatory responsive assessment
Time Frame: From entering the operating room to 48 hours after the surgery
|
|
From entering the operating room to 48 hours after the surgery
|
Heart rate
Time Frame: From the induction of anesthesia to the right moment of extubation, up to 1 day.
|
Heart rate are monitored every 15 min from the induction of anesthesia to the right moment of extubation.
|
From the induction of anesthesia to the right moment of extubation, up to 1 day.
|
Depth of anesthesia
Time Frame: From the induction of anesthesia to the right moment of extubation, up to 1 day.
|
Bispectral index(BIS) monitor are performed every 15 min from the induction of anesthesia to the right moment of extubation.
|
From the induction of anesthesia to the right moment of extubation, up to 1 day.
|
Recovery of anesthesia
Time Frame: From the induction of anesthesia to the right moment of extubation, up to 1 day.
|
Time of anesthetic ceased,time of call to open eyes,time to extubation, time to leave the PACU are recorded.
|
From the induction of anesthesia to the right moment of extubation, up to 1 day.
|
Central venous pressure(CVP)
Time Frame: From the induction of anesthesia to the right moment of extubation, up to 1 day.
|
Central venous pressure(CVP) are monitored every 15 min from the induction of anesthesia to the right moment of extubation.
|
From the induction of anesthesia to the right moment of extubation, up to 1 day.
|
Blood pressure
Time Frame: From the induction of anesthesia to the right moment of extubation, up to 1 day.
|
systolic blood pressure, Diastolic blood pressure are monitored every 15 min from the induction of anesthesia to the right moment of extubation.
|
From the induction of anesthesia to the right moment of extubation, up to 1 day.
|
Respiration rate
Time Frame: From the induction of anesthesia to the right moment of extubation, up to 1 day.
|
Respiration rate are monitored every 15 min from the induction of anesthesia to the right moment of extubation.
|
From the induction of anesthesia to the right moment of extubation, up to 1 day.
|
Pulse blood oxygen saturation
Time Frame: From the induction of anesthesia to the right moment of extubation, up to 1 day.
|
Pulse blood oxygen saturation are monitored every 15 min from the induction of anesthesia to the right moment of extubation.
|
From the induction of anesthesia to the right moment of extubation, up to 1 day.
|
Number of Participants with Serious and Non-Serious Adverse Events
Time Frame: Up to 7 days
|
Up to 7 days
|
Collaborators and Investigators
Collaborators
Study record dates
Study Major Dates
Study Start
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Brain Diseases
- Central Nervous System Diseases
- Nervous System Diseases
- Wounds and Injuries
- Craniocerebral Trauma
- Trauma, Nervous System
- Brain Injuries
- Physiological Effects of Drugs
- Adrenergic Agents
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Central Nervous System Depressants
- Peripheral Nervous System Agents
- Cholinergic Antagonists
- Cholinergic Agents
- Analgesics
- Sensory System Agents
- Anesthetics, General
- Anesthetics
- Analgesics, Non-Narcotic
- Platelet Aggregation Inhibitors
- Adrenergic alpha-2 Receptor Agonists
- Adrenergic alpha-Agonists
- Adrenergic Agonists
- Analgesics, Opioid
- Narcotics
- Hypnotics and Sedatives
- Anesthetics, Inhalation
- Neuromuscular Agents
- Nicotinic Antagonists
- Neuromuscular Nondepolarizing Agents
- Neuromuscular Blocking Agents
- Remifentanil
- Dexmedetomidine
- Sevoflurane
- Vecuronium Bromide
Other Study ID Numbers
- SPPHA01
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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