SSEP Fluctuations Due to Dexmedetomidine During Posterior Spine Fusion

NCT ID: NCT03236727

Last Updated: 2017-08-03

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

COMPLETED

Clinical Phase

PHASE3

Total Enrollment

25 participants

Study Classification

INTERVENTIONAL

Study Start Date

2014-03-31

Study Completion Date

2016-06-30

Brief Summary

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Intravenous anesthetic agents as far as inhaled agents produce a dose depended increase in latency and decrease in amplitude of SomatoSensory Evoked Potential (SSEP). Dexmetedomidine, a highly selective a2 adrenergic agonist, not only minimizes the anesthetic agents but also the opioids, reducing the analgesic demands. The effect of dexmedetomidine on SSEP has not been elucidated. We aimed to investigate alterations on somatosensory SSEP in adults during posterior spinal fusion surgery before and after Dexmedetomidine administration.

Detailed Description

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Patients 18-75 years old, ASA (physical status classification system) I-III, scheduled for elective posterior spinal fusion surgery were enrolled in this prospective study. After induction in anesthesia, it was applied SSEP monitoring and a baseline test was performed after 15min (in order to wash out the propofol used for induction). Infusion of Dexmedetomidine was started at a bolus dose of 1mcg/Kg following by 0.7mcg/Kg. Bispectral Index (BIS) monitored the depth of anesthesia and an adequate level (40-50) of anesthesia was maintained by sevoflurane. SSEP were recorded intraoperatively from the tibial nerve (P37) and data were analyzed over that period.

Conditions

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Spinal Fusion

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

SUPPORTIVE_CARE

Blinding Strategy

NONE

Study Groups

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Control

Data of SSEPs (amplitude and latency) before dexmedetomidine infusion.

Group Type NO_INTERVENTION

No interventions assigned to this group

Dexmedetomidine

Data of SSEPs (amplitude and latency) after dexmedetomidine infusion.

Group Type ACTIVE_COMPARATOR

Dexmedetomidine

Intervention Type DRUG

Changes of both amplitude and latency of SSEPs during dexmedetomidine infusion.

Interventions

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Dexmedetomidine

Changes of both amplitude and latency of SSEPs during dexmedetomidine infusion.

Intervention Type DRUG

Other Intervention Names

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Control-no dexmedetomidine

Eligibility Criteria

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Inclusion Criteria

* Patients with ASA physical status 1-3

Exclusion Criteria

* Patients with ASA physical status \>3,
* Body Mass Index (BMI) over 30,
* indication for rapid sequence induction,
* any contraindication for receiving b-blocker,
* Glasgow Coma Scale (GCS) \<13,
* history of drug abuse,
* neurologic deficit or preoperatively foreseen delayed extubation,
* preoperative heart rate\<45.
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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George Papanicolaou Hospital

OTHER

Sponsor Role lead

Responsible Party

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Asouhidou Irene

Assistant Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Other Identifiers

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GeorgePHT

Identifier Type: -

Identifier Source: org_study_id

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