The Effect of Percutaneous Superior Venae Cava Cannulation Clamping on Cerebral Near Infrared Spectroscopy in MICS

NCT ID: NCT01166841

Last Updated: 2013-05-15

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

NA

Total Enrollment

35 participants

Study Classification

INTERVENTIONAL

Study Start Date

2010-05-31

Study Completion Date

2011-09-30

Brief Summary

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The use of minimally invasive cardiac surgery has progressed over the last 5-10 years to allow access to the heart through a small incision in the right chest. This avoids the use of a sternotomy incision through the bone in the front of the chest. The benefits of such an approach are cosmetic (smaller incision not easily visible) and faster recovery. The minimally invasive approach also eliminates the risk of sternal wound infection. Minimally invasive cardiac surgery however poses additional challenges; one of the biggest is access to the large blood vessels which need to be cannulated to allow the heart lung machine to function. In conventional surgery, these vessels are easily accessed as they are entering or leaving the heart. In minimally invasive surgery, the cannula are placed into easily accessible arteries and veins, traditionally the femoral vessels. These vessels are smaller than those by the heart and so require smaller cannula, which provide challenges to the heart lung machine. One way around this is to use more cannulae and so cannulation of a vein in the neck is also performed. This cannula however, has been associated with neck hematoma, tearing of the vein and blood loss. While placement of the cannula in the neck is routine at LHSC now, when this surgery was first performed here 10 years ago, it was done so without the neck cannula and with no injury to patients. The purpose of this study therefore, is to more rigorously study the effect of the neck cannula on heart lung bypass, and more specifically to see if oxygen delivery to the organs, and the brain in particular is sufficient to avoid hypoxia.

Detailed Description

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Conditions

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Mitral Regurgitation

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Caregivers

Study Groups

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PSVC line clamped

Clamping of the percutaneously placed superior vena cava line placed for minimally invasive mitral valve repair/replacement.

Group Type EXPERIMENTAL

PSVC line clamped

Intervention Type PROCEDURE

A line clamp will be placed on the PSVC line while on cardiopulmonary bypass.

Unclamped PSVC

Unclamped percutaneously placed superior vena cava line placed for minimally invasive mitral valve repair/replacement.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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PSVC line clamped

A line clamp will be placed on the PSVC line while on cardiopulmonary bypass.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* 18-80 years of age
* Elective mitral valve repair or replacement.
* Scheduled to have minimally invasive approach (right thoracotomy)
* No contraindication to SVC line placement

Exclusion Criteria

* Emergency surgery
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's

OTHER

Sponsor Role lead

Responsible Party

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Daniel Bainbridge

Associate Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Daniel Bainbridge, MD FRCPC

Role: PRINCIPAL_INVESTIGATOR

Lawson Health research institute, University of Western Ontario

Locations

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London Health Sciences Centre, Univeristy Hospital

London, Ontario, Canada

Site Status

Countries

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Canada

References

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Bainbridge DT, Chu MW, Kiaii B, Cleland A, Murkin J. Percutaneous superior vena cava drainage during minimally invasive mitral valve surgery: a randomized, crossover study. J Cardiothorac Vasc Anesth. 2015 Feb;29(1):101-6. doi: 10.1053/j.jvca.2014.07.020. Epub 2014 Nov 7.

Reference Type DERIVED
PMID: 25440652 (View on PubMed)

Other Identifiers

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16992

Identifier Type: OTHER

Identifier Source: secondary_id

R-10-181

Identifier Type: -

Identifier Source: org_study_id

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