Ketamine and Changes of the Short Portable Mental Status Questionnaire

NCT ID: NCT02049411

Last Updated: 2014-11-25

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

PHASE2

Total Enrollment

80 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-06-30

Study Completion Date

2014-05-31

Brief Summary

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\- Cognitive changes are related to aging, affecting the performance of older patients in the solution of problems and the execution of tasks.

This phenomenon has been observed as a decline of neurophysiological domains, especially memory, and the velocity of thought.

* Anesthesia and surgery performed contributes to its development then, is named post-operative cognitive dysfunction (POCD). The incidence varies due to conditions of:

1. Anesthesia and surgery.
2. The time elapsed after surgery.
3. The population studied, and the type of cognitive test employed.
* The aim of this study is to evaluate the changes around the Short Portable Mental Status Questionnaire (SPMSQ-E) after ketamine administration on ophthalmic surgery on the common conditions of geriatric patients, -comorbid and settings as minor surgery-.

Detailed Description

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Participants will be patients programmed for a vitrectomy or cataract surgery involving a retrobulbar block, to be carried out with a local anesthesia.

\- Administration of ketamine will be suspended during the study for any cause considered as a risk to the patient according to the judgment of the researchers.

Conditions

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Postoperative Cognitive Dysfunction

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

SUPPORTIVE_CARE

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Ketamine group

Ketamine: (dose 0.3 mcg/kg) included in physiological solution at 0.9% (250 ml) during 2 hours, intravenously.

Group Type EXPERIMENTAL

Ketamine

Intervention Type DRUG

Ketamine: (dose 0.3 mcg/kg) included in physiological solution at 0.9% (250 ml) during 2 hours, intravenously.

physiological solution

Intervention Type DRUG

physiological solution at 0.9% (250 ml) during 2 hours, intravenously, with the same physical characteristics of ketamine.

physiological solution

Control group: only physiological solution at 0.9% (250 ml) during 2 hours, intravenously.

Group Type SHAM_COMPARATOR

physiological solution

Intervention Type DRUG

physiological solution at 0.9% (250 ml) during 2 hours, intravenously, with the same physical characteristics of ketamine.

Interventions

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Ketamine

Ketamine: (dose 0.3 mcg/kg) included in physiological solution at 0.9% (250 ml) during 2 hours, intravenously.

Intervention Type DRUG

physiological solution

physiological solution at 0.9% (250 ml) during 2 hours, intravenously, with the same physical characteristics of ketamine.

Intervention Type DRUG

Other Intervention Names

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Ketalin Ketalar Ketanest Control Placebo

Eligibility Criteria

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Inclusion Criteria

* Patients be over 60 years and older.
* Intraocular pressure less than 20 millimeter of mercury.
* American Society of Anaesthesiologists (ASA) physical status classification, I-III.

Exclusion Criteria

* History of psychosis or schizophrenia.
* Nephropathy.
* Difficult to control hypertension.
* Uncontrolled hepatic disorders.
* Allergy to ketamine.
* Moderate to severe depression.
* Post-operative delirium.
* Needed to use medications other than those contemplated in the study.
Minimum Eligible Age

60 Years

Maximum Eligible Age

85 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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National Polytechnic Institute, Mexico

OTHER

Sponsor Role collaborator

Instituto Mexicano del Seguro Social

OTHER_GOV

Sponsor Role lead

Responsible Party

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Dulce Maria Rascon Martinez

Anesthesiology - Pain Clinical professor.

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Dulce M. Rascon, M.D

Role: PRINCIPAL_INVESTIGATOR

Instituto Mexicano del Seguro Social

Maria E. Ocharan, PhD.

Role: STUDY_DIRECTOR

Instituto Politecnico Nacional

Ana Fresan, PhD.

Role: STUDY_CHAIR

Instituto Nacional de Psiquiatria

Jorge H. Genis, Geriatrician

Role: STUDY_CHAIR

Instituto Mexicano del Seguro Social

Antonio Castellanos, M.D.

Role: STUDY_CHAIR

Instituto Mexicano del Seguro Social

Locations

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Centro Medico Nacional Siglo XXI. UMAE Hospital de Especialidades

Mexico City, Mexico City, Mexico

Site Status

Countries

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Mexico

References

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Other Identifiers

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R-2012-3601-56

Identifier Type: -

Identifier Source: org_study_id