- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01545193
The Effect of Age on the Incidence of Postoperative Residual Neuromuscular Blockade
Study Overview
Status
Intervention / Treatment
Detailed Description
300 patients will be enrolled in this study. Patients will be selected for enrollment by reviewing the operating room schedule on the day prior to the procedure. Two groups of patients will be examined; group 1 will consist of patients ages 18-50 (n=150) and group 2 will consist of patients age 70-90 (n=150). Patients will be enrolled in blocks of 20 to ensure an equal distribution of subjects in each age group over time.
Anesthetic and neuromuscular management will be standardized in both study cohorts
Neuromuscular Monitoring:
On arrival to the PACU, a blinded research assistant will obtain a quantitative TOF measurement in all subjects. The TOF-Watch SX will be used to obtain these measurements. Two consecutive responses to TOF stimulation (separated by > 15 seconds) will be obtained, and the average of the two values recorded. If the measurements differ by greater than 10%, additional TOF ratios can be obtained (up to a total of 4 TOF values), and the closest two ratios averaged. The number of patients with TOF ratios < 0.7, 0.8, and 0.9 (which are levels of residual neuromuscular block associated with various adverse clinical outcomes) in each group will be compared.
Signs and Symptoms of Residual Neuromuscular Blockade After TOF data is collected on arrival to the PACU, the patients will be carefully examined for signs and symptoms of muscle weakness by a blinded research assistant. A standardized examination form will be used to determine the presence or absence of muscle weakness in a variety of muscle groups. The examination will be performed on arrival to the PACU and again 15 minutes after admission.
Respiratory Events Potentially Related to Residual Neuromuscular Blockade
Pulse oximetry will be used to continuously monitor arterial oxygen saturations (Sp02) during patient transport and in the PACU. Patients will be transported to the PACU without supplemental oxygen (unless the anesthesia care provider determines that oxygen therapy is required for patient safety-per standard practice). All patients will be placed on 2 liters nasal cannula oxygen in the PACU. In the PACU, pulse oximetry will be used to continuously measure Sp02. Oxygenation data will be stored and recorded every minute for the first 30 minutes of the PACU admission. In addition to oxygenation data, patients will be assessed during transportation to the PACU and during the first 30 minutes of the PACU admission for evidence of airway obstruction.
PACU Length of Stay The impact of age and residual blockade on length of PACU stay will be determined. The time required to meet discharge criteria and achieve actual discharge will be noted.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
-
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Illinois
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Evanston, Illinois, United States, 60201
- NorthShore University Healthsystem
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Patients presenting for elective surgical procedures with an expected duration greater than 45 minutes.
- ASA I to III patients ≥ 18 years of age, presenting for surgery requiring maintenance of neuromuscular blockade in the operating room, will be eligible for enrollment.
Exclusion Criteria:
- presence of an underlying neuromuscular disease
- use of drugs known to interfere with neuromuscular transmission (antiseizure medications, anticholinesterases, magnesium sulfate)
- renal insufficiency (serum creatinine > 1.8 mg/dL) or renal failure.
Study Plan
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Age 18-50
This is a younger study cohort who is anticipated to have a lower incidence of residual neuromuscular blockade
|
An older cohort is anticipated to have a higher incidence of residual neuromuscular blockade
|
Age 70-90
This is a older study cohort who is anticipated to have a higher incidence of residual neuromuscular blockade
|
An older cohort is anticipated to have a higher incidence of residual neuromuscular blockade
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Incidence of Residual Neuromuscular Blockade
Time Frame: Early postoperative period, up to 24 hours
|
The TOF-Watch SX will be used to determine the incidence of residual neuromuscular blockade.
The TOF-Watch SX consists of a nerve stimulator and a sensor to quantify the TOF ratio.
Two consecutive responses to train-of-four (TOF) stimulation will be obtained, and the average of the two values recorded.
If the measurements differ by greater than 10%, additional TOF ratios can be obtained (up to a total of 4 TOF values), and the closest two ratios averaged.
The number of patients with TOF ratios < 0.9 in each group will be compared.
|
Early postoperative period, up to 24 hours
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Signs and Symptoms of Residual Neuromuscular Blockade
Time Frame: Early postoperative period, up to 24 hours
|
A standardized examination form will be used to determine the presence or absence of muscle weakness in a variety of muscle groups.
The examination will be performed on arrival to the PACU and again 15 minutes after admission.
Reported data is the total number of symptoms (0-16) at PACU admission
|
Early postoperative period, up to 24 hours
|
Respiratory Events Potentially Related to Residual Neuromuscular Blockade
Time Frame: Early postoperative period, up to 24 hours
|
Pulse oximetry will be used to continuously monitor arterial oxygen saturations (Sp02) during patient transport and in the PACU.
Data reported are the number of patients developing hypoxemia (oxygen saturation < 94% on pulse oximetry) in the PACU
|
Early postoperative period, up to 24 hours
|
PACU Length of Stay
Time Frame: Early postoperative period, up to 24 hours
|
The time required to meet discharge criteria and achieve actual discharge will be noted.
|
Early postoperative period, up to 24 hours
|
Collaborators and Investigators
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- EH11-045
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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