Magnesium Sulfate and Neuroendocrine Hormone

NCT ID: NCT04514731

Last Updated: 2021-09-24

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

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-01-21

Study Completion Date

2021-12-15

Brief Summary

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Total knee arthroplasty is a procedure that relieves pain in patients with severe symptomatic osteoarthritis, but it can be associated with postoperative pain, which hinders recovery. In the previous study, we reported evidence of increased pain in patients undergoing staged total knee arthroplasty, in whom the second operated knee had greater sensitivity (tertiary hyperalgesia) as a result of the surgical injury to the first operated knee.

Magnesium sulfate is an effective analgesic adjuvant for postoperative pain. Its analgesic property seems to be associated with the regulation of calcium influx into the cells, or antagonism of N-methyl-D-aspartate receptors in the central nervous system. Additionally, magnesium is known to have an anti-inflammatory effect. Inflammatory state may accompany with pain via peripheral or central sensitization.

Recently, we reported that magnesium sulfate effectively attenuates not only postoperative pain but also increased pain intensity without serious adverse effects in the bilateral staged total knee arthroplasty. However, the exact mechanism regarding these effects of magnesium sulfate remains unclear.

In the present study, we will investigate the analgesic mechanism of magnesium sulfate via analysis of endocrine neurosteroid levels in patients undergoing bilateral staged total knee arthroplasty.

Detailed Description

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Conditions

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Arthropathy of Knee Magnesium Sulfate Cortisol Dehydroepiandrosterone

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Group M

Patients in the magnesium sulfate group received magnesium sulfate 50 mg/kg for 15 minutes after spinal anesthesia and then 15 mg/kg/hour by continuous intravenous infusion until the end of surgery

Group Type EXPERIMENTAL

Magnesium sulfate

Intervention Type DRUG

Magnesium group receives magnesium sulfate (50 mg/kg) in 100 mL of isotonic saline over 15 minutes after spinal anesthesia, followed by a continuous magnesium sulfate infusion (15 mg/kg/hour) until the end of surgery.

Group S

Patients in the saline group received the same volume of isotonic saline over the same period with magnesium infusion protocol

Group Type PLACEBO_COMPARATOR

Isotonic Saline

Intervention Type DRUG

Isotonic saline group receives the same volume of isotonic saline, administered according to the same methods as in the magnesium group.

Interventions

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Magnesium sulfate

Magnesium group receives magnesium sulfate (50 mg/kg) in 100 mL of isotonic saline over 15 minutes after spinal anesthesia, followed by a continuous magnesium sulfate infusion (15 mg/kg/hour) until the end of surgery.

Intervention Type DRUG

Isotonic Saline

Isotonic saline group receives the same volume of isotonic saline, administered according to the same methods as in the magnesium group.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Patients who undergo staged bilateral total knee arthroplasty
* Spinal anesthesia
* American Society of Anesthesiologists physical status 1 and 2

Exclusion Criteria

* Patients who undergo unilateral total knee arthroplasty
* General anesthesia
* Musculoskeletal disease
* Hypermagnesemia
* Atrioventricular block
* Previous history of administration of calcium channel blockers
Minimum Eligible Age

30 Years

Maximum Eligible Age

80 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Seoul National University Bundang Hospital

OTHER

Sponsor Role collaborator

Seoul National University Hospital

OTHER

Sponsor Role lead

Responsible Party

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Hyun-Jung Shin

Associate Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Hyun-Jung Shin, MD., PhD.

Role: PRINCIPAL_INVESTIGATOR

Seoul National University Bundang Hospital

Locations

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Seoul National University Bundang Hospital

Seongnam-si, , South Korea

Site Status RECRUITING

Countries

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South Korea

Central Contacts

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Hyun-Jung Shin, MD., PhD.

Role: CONTACT

0317877508

Facility Contacts

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Hyun-Jung Shin, Ph.D., M.D.

Role: primary

82317877499

Other Identifiers

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B-2008/631-002

Identifier Type: -

Identifier Source: org_study_id

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