The Effect of Povidone-iodine Ophthalmic Surgical Prep Solution on Respiration in Children Undergoing Strabismus Surgery With General Anesthesia.

September 13, 2019 updated by: Michelle Rovner, MD, Medical University of South Carolina

Determine whether the application of povidone-iodine ophthalmic solution onto the ocular surface causes a change in respiration in children undergoing strabismus surgery with general anesthesia.

Hypothesis: The application of povidone-iodine ophthalmic solution to the ocular surface causes a change in respiration in children during general anesthesia prior to strabismus surgery.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The study is randomized and single blind. One hundred children were randomly assigned to have either povidone-iodine (group A) or balanced salt solution (BSS) (group B) eye drops instilled into their eyes during anesthesia just prior to strabismus surgery. After induction of anesthesia and insertion of an LMA while the patient was at a steady state of anesthesia and spontaneously breathing sevoflurane in oxygen, 3 drops of either povidone-iodine or BSS was instilled into each eye (right eye first). Respiratory rate was determined by measuring the peak-to-peak interval on the capnograph. This is similar to calculating heart rate by measuring the R-R interval on an ECG. HR, BP, SaO2, EtCO2, and expired sevoflurane were measured in each patient. Medical history information collected included history of prior surgeries, co-existing diseases, or apnea. Appropriate statistical analyses were performed for comparisons between the groups with respect to respiratory rate, HR, BP, expired sevoflurane, and co-existing diseases.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
106

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • South Carolina
      • Charleston, South Carolina, United States, 29425
        • Medical University of South Carolina

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

1 year to 17 years (CHILD)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

  • Inclusion Criteria

    • Children between the ages of 1 year and 17 years
    • Scheduled for strabismus surgery
    • Anesthesia plan includes inhalational induction with sevoflurane and the use of a laryngeal mask airway (LMA) with spontaneous ventilation, per the attending anesthesiologist.

Exclusion Criteria

  • History of an adverse reaction to iodine
  • History of any thyroid disease
  • Patients who require tracheal intubation, as determined by the attending anesthesiologist; e.g. craniofacial anomalies.
  • Patients with a contraindication to sevoflurane, such as malignant hyperthermia or severe left ventricular dysfunction.
  • Inability or unwillingness of the subject or legal guardian/ representative to give informed consent.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: OTHER
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: SINGLE

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
ACTIVE_COMPARATOR: Group A - povidone-iodine ophthalmic solution.
Group A will receive three drops of povidone-iodine ophthalmic solution in each eye, with the right eye to receive the drops first.
Drug: Provodine-Iodine Solution
Group A will receive three drops of povidone-iodine ophthalmic solution in each eye, with the right eye to receive the drops first. The eye drops will be administered by the study anesthesiologist. After application of either solution to the eyes of the patient, any change in ventilation can be detected and timed by observation of the capnography (end-tidal carbon dioxide) and direct observation of the chest wall with use of the iPhone stopwatch feature again. The capnograph is a standard monitor of respiration used during the administration of general anesthesia. Data collected at this time will include whether or not there was a change in respiration, what this change in respiration was, if assisted ventilation was required, how long assisted ventilation was required (if applicable), HR, BP, RR, SaO2 , ETCO2, InspSevo, and ExpSevo. This study intervention and data collection will take less than 5 minutes.
ACTIVE_COMPARATOR: Group B - ophthalmic balanced salt solution.
Group B will receive three drops in each eye of ophthalmic balanced salt solution, with the right eye to receive the drops first.
Drug: Group B will receive three drops in each eye of ophthalmic balanced salt solution.
Group B will receive three drops in each eye of ophthalmic balanced salt solution. The eye drops will be administered by the study anesthesiologist. After application of either solution to the eyes of the patient, any change in ventilation can be detected and timed by observation of the capnography (end-tidal carbon dioxide) and direct observation of the chest wall with use of the iPhone stopwatch feature again. The capnograph is a standard monitor of respiration used during the administration of general anesthesia. Data collected at this time will include whether or not there was a change in respiration, what this change in respiration was, if assisted ventilation was required, how long assisted ventilation was required (if applicable), HR, BP, RR, SaO2 , ETCO2, InspSevo, and ExpSevo. This study intervention and data collection will take less than 5 minutes

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Breath Duration
Time Frame: 5 minutes
The iPhone stopwatch application will be used and its 'lap button' feature to collect the respiration peak intervals (in seconds) for 5 breaths. Specifically, at the patient's peak inspiration (as seen on the capnography), the study member will start the stopwatch and proceed to hit the 'lap' button for the next 5 consecutive inspiration peaks. These data intervals will be recorded on the data sheet after the 5 breaths are over, as the intervals are conveniently stored and numbered below the stopwatch in the app
5 minutes

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Medical University of South Carolina

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (ACTUAL)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 2, 2017

Primary Completion (ACTUAL)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 19, 2018

Study Completion (ACTUAL)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
September 19, 2018

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 23, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 16, 2017

First Posted (ACTUAL)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 21, 2017

Study Record Updates

Last Update Posted (ACTUAL)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 16, 2019

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 13, 2019

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
September 1, 2019

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • Pro00067331

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

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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