Effects of Dexmedetomidine on Postoperative Cognitive Dysfunction During One-lung Ventilation in Elder Patients

NCT ID: NCT02134093

Last Updated: 2014-07-11

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

PHASE4

Total Enrollment

120 participants

Study Classification

INTERVENTIONAL

Study Start Date

2014-07-31

Study Completion Date

2015-12-31

Brief Summary

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This study is to explore the effects of dexmedetomidine on postoperative cognitive dysfunction during one-lung ventilation in elder patients.

Detailed Description

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Conditions

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Postoperative Confusion

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Normal saline

Continuous pump infusion of normal saline with identical volume, compared with the low dose and high dose group,until the end of surgery

Group Type PLACEBO_COMPARATOR

Induction of anesthesia,midazolam ,sufentanil,etomidate and rocuronium

Intervention Type DRUG

Anesthesia induction:midazolam (0.03\~0.05 mg/kg), sufentanil(0. 5\~0.8 μg/kg), etomidate ( 0.2\~0.6mg/kg) and rocuronium(0.6mg/kg)

Normal saline

Intervention Type DRUG

Continuous pump infusion normal saline with identical volume of dexmedetomidine.

Maintenance of anesthesia , propofol, remifentanil,vecuronium

Intervention Type DRUG

Continuous infusion of propofol (3\~6 mg/kg/h), remifentanil (0.05\~0.3 μg/kg/min)is required to maintain Entropy within 40\~60,Mean Arterial Blood Pressure more than 20% of baseline level , Oxygen Saturation more than 90% , airway pressure less than 40 cm H2O, intermittent injection vecuronium (0.05\~0.1mg/kg) as needed to maintain muscle relaxation.

High dose group, dexmedetomidine

Continuous pump infusion dexmedetomidine at 1μg/kg for 15 minutes before anesthesia induction ,then continuous pump infusion dexmedetomidine at 0.4μg/kg/h until the end of surgery

Group Type EXPERIMENTAL

Induction of anesthesia,midazolam ,sufentanil,etomidate and rocuronium

Intervention Type DRUG

Anesthesia induction:midazolam (0.03\~0.05 mg/kg), sufentanil(0. 5\~0.8 μg/kg), etomidate ( 0.2\~0.6mg/kg) and rocuronium(0.6mg/kg)

Dexmedetomidine

Intervention Type DRUG

Continuous pump infusion dexmedetomidine at 0.5μg/kg (low dose group)or 1μg/kg (high dose group)for 15 minutes before anesthesia induction,then followed by a continuous pump infusion at 0.2 μg/kg/h(low dose group)or 0.4μg/kg/h(high dose group) until the end of surgery.

Maintenance of anesthesia , propofol, remifentanil,vecuronium

Intervention Type DRUG

Continuous infusion of propofol (3\~6 mg/kg/h), remifentanil (0.05\~0.3 μg/kg/min)is required to maintain Entropy within 40\~60,Mean Arterial Blood Pressure more than 20% of baseline level , Oxygen Saturation more than 90% , airway pressure less than 40 cm H2O, intermittent injection vecuronium (0.05\~0.1mg/kg) as needed to maintain muscle relaxation.

Low dose group, dexmedetomidine

Continuous pump infusion dexmedetomidine at 0.5μg/kg for 15 minutes before anesthesia induction ,then continuous pump infusion dexmedetomidine at 0.2μg/kg/h until the end of surgery

Group Type EXPERIMENTAL

Induction of anesthesia,midazolam ,sufentanil,etomidate and rocuronium

Intervention Type DRUG

Anesthesia induction:midazolam (0.03\~0.05 mg/kg), sufentanil(0. 5\~0.8 μg/kg), etomidate ( 0.2\~0.6mg/kg) and rocuronium(0.6mg/kg)

Dexmedetomidine

Intervention Type DRUG

Continuous pump infusion dexmedetomidine at 0.5μg/kg (low dose group)or 1μg/kg (high dose group)for 15 minutes before anesthesia induction,then followed by a continuous pump infusion at 0.2 μg/kg/h(low dose group)or 0.4μg/kg/h(high dose group) until the end of surgery.

Maintenance of anesthesia , propofol, remifentanil,vecuronium

Intervention Type DRUG

Continuous infusion of propofol (3\~6 mg/kg/h), remifentanil (0.05\~0.3 μg/kg/min)is required to maintain Entropy within 40\~60,Mean Arterial Blood Pressure more than 20% of baseline level , Oxygen Saturation more than 90% , airway pressure less than 40 cm H2O, intermittent injection vecuronium (0.05\~0.1mg/kg) as needed to maintain muscle relaxation.

Interventions

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Induction of anesthesia,midazolam ,sufentanil,etomidate and rocuronium

Anesthesia induction:midazolam (0.03\~0.05 mg/kg), sufentanil(0. 5\~0.8 μg/kg), etomidate ( 0.2\~0.6mg/kg) and rocuronium(0.6mg/kg)

Intervention Type DRUG

Dexmedetomidine

Continuous pump infusion dexmedetomidine at 0.5μg/kg (low dose group)or 1μg/kg (high dose group)for 15 minutes before anesthesia induction,then followed by a continuous pump infusion at 0.2 μg/kg/h(low dose group)or 0.4μg/kg/h(high dose group) until the end of surgery.

Intervention Type DRUG

Normal saline

Continuous pump infusion normal saline with identical volume of dexmedetomidine.

Intervention Type DRUG

Maintenance of anesthesia , propofol, remifentanil,vecuronium

Continuous infusion of propofol (3\~6 mg/kg/h), remifentanil (0.05\~0.3 μg/kg/min)is required to maintain Entropy within 40\~60,Mean Arterial Blood Pressure more than 20% of baseline level , Oxygen Saturation more than 90% , airway pressure less than 40 cm H2O, intermittent injection vecuronium (0.05\~0.1mg/kg) as needed to maintain muscle relaxation.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Written informed consent.
* Ongoing one-lung ventilation surgery.
* American Society of Anesthesiologists class I to III.
* Aged between 55 and 75 years old.
* Body Mass Index between 18 and 25 kg/m2.

Exclusion Criteria

* Systolic blood pressure more than 180 mmHg or lower than 90 mmHg,diastolic blood pressure more than 110 mmHg or lower than 60 mmHg.
* Serious heart,liver,kidney, pulmonary, and endocrine disease or serious infection.
* Suspected or confirmed difficult airway.
* History of abnormal anesthesia.
* Suspected of malignant hyperthermia.
* Use of sedative and antidepressant drug or serious alcoholism
* Mini-mental State Examination less than 17.
* Highest academic degree below grade 6 in primary schools
* Patients inability to exchange with serious visual and hearing impairment or mental disability.
* History of shock.
* Carotid artery stenosis and central nervous system disease such as stroke, epilepsy.
* Allergic to investigational products or with other contraindication.
* Participated in other study within 30 days .
Minimum Eligible Age

55 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Tang-Du Hospital

OTHER

Sponsor Role lead

Responsible Party

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YangLu

physician

Responsibility Role PRINCIPAL_INVESTIGATOR

Other Identifiers

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Tangdu sedation

Identifier Type: -

Identifier Source: org_study_id

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