NCT03806270

Brief Summary

Oculocardiac reflex (OCR) is usually happening in pediatric strabismus surgery and observed just when the surgent pulls the ocular muscles. The reflex is one of the trigemino-vagal reflexes, and causes bradycardia, arrhythmia, and even cardiac arrest during eye surgery. Premedication for relaxation with drugs like hydroxyzine dihydrochloride or midazolam before surgery of the pediatric population is often used in Turkey, although it is not recommended in foreign countries. Some recent studies showed that when midazolam and hydroxyzine dihydrochloride used together not only, they lessen agitation before surgery but also they prevent emergence agitation. The primary aim of this prospective observational study is to show the effect of hydroxyzine dihydrochloride on preventing the pediatric patient from Oculocardiac reflex related to strabismus surgery.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
45

participants targeted

Target at P25-P50 for all trials

Timeline
Completed

Started Oct 2018

Shorter than P25 for all trials

Geographic Reach
1 country

2 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

October 1, 2018

Completed
3 months until next milestone

First Submitted

Initial submission to the registry

December 24, 2018

Completed
23 days until next milestone

First Posted

Study publicly available on registry

January 16, 2019

Completed
1 month until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 15, 2019

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 15, 2019

Completed
8 months until next milestone

Results Posted

Study results publicly available

October 4, 2019

Completed
Last Updated

October 22, 2019

Status Verified

October 1, 2019

Enrollment Period

5 months

First QC Date

December 24, 2018

Results QC Date

February 25, 2019

Last Update Submit

October 9, 2019

Conditions

Keywords

Strabismus surgeryOculocardiac reflexHydroxyzine dihydrochlorideMidazolamPremedicationThe Ramsay Scale

Outcome Measures

Primary Outcomes (4)

  • Heart Rate-1

    The lowest heart rate observed from EKG monitorization at the "time-out" after the anesthesia induction, and just before the surgery starts. Heart rate-1 is a data, not an assessing change, which is recoded during the "time-out". "The time-out" is when the patient's name, the procedure, the surgent name is repeated before the operation starts.

    1 minute, at the "time out", through study completion an average of 6 months

  • Heart Rate-2

    The heart rate observed from EKG monitorization at the time operator warns the investigator just before the traction of the orbital muscle. Heart rate-2 is a data, not an assessing change, which is recorded during the operation at the time operator warns. The heart rate observed from EKG monitorization, before every orbital muscle traction at the time the operator's warning before traction.

    1 minute, at the strabismus surgery operation, through study completion an average of 6 months

  • Heart Rate-3

    The lowest heart rate observed from EKG monitorization, after every orbital muscle traction within 120 seconds. Heart rate-3 is a data, not an assessing change, which is recorded within 120 seconds after traction applied.

    within 120 seconds after the orbital muscle traction, at the strabismus surgery operation, through study completion an average of 6 months

  • Number of Observed Oculocardiac Reflex(OCR)

    The OCR is a heartbeat anomaly(bradycardia, any arrhythmia, or cardiac arrest) associated with traction applied to the extraocular muscles during strabismus surgery. The specific criteria were as follows: the lowest heart rate observed within 120 seconds from EKG monitorization, after every orbital muscle traction, was less than 20% of the heart rate observed directly preceding traction of the orbital muscle. Additionally, any kind of arrhythmia or cardiac arrest occurrence within 120 seconds after orbital muscle traction was also defined as an OCR.

    2 minutes, at the strabismus surgery operation after recording Heart Rate-3, through study completion an average of 6 months

Secondary Outcomes (1)

  • Ramsay Sedation Score

    After patient transferred into the operation theatre and before anesthesia induction, through study completion an average of 6 months

Other Outcomes (2)

  • Number of Orbital Muscles of the Participants With Different Considerations Taken With Respect to the Treatment of OCR

    within 5 minutes after defining the OCR occurrence, at the strabismus surgery operation, through study completion an average of 6 months

  • The Orbital Muscle Name Which OCR Occurred During it's Traction

    within 5 minutes after defining the OCR occurrence, at the strabismus surgery operation, through study completion an average of 6 months

Study Arms (3)

Midazolam

Demizolam, once on the operation day, usually ordered 15 minutes before strabismus operation by another anesthesiologist who is charged to perform anesthesia who is not related with the trial.The maximum dose of 0.5 mg/kg midazolam is given orally with cherry juice of maximum 5 ml. in Yeditepe University Hospital to the pediatric patients by the anesthesiologists. In all groups patients are not selected to the groups and premedication and doses are not given by the investigator, they grouped according to the premedication given by the anesthesiologists, after the operation retrospectively.

Drug: Midazolam

Midazolam&Hydroxyzine dihydrochloride1/2

Midazolam and Hydroxyzine dihydrochloride, once on the operation day, usually ordered 15 minutes before strabismus operation by another anesthesiologist who is charged to perform anesthesia who is not related with the trial.The maximum dose of 0.5 mg/kg midazolam is given orally with hydroxyzine dihydrochloride (dose of 0.5 mg/kg) in Yeditepe University Hospital to the pediatric patients by the anesthesiologists. In all groups patients are not selected to the groups and premedication doses are not given by the investigator, they grouped according to the premedication given by the anesthesiologists, after the operation retrospectively.

Drug: MidazolamDrug: Hydroxyzine Dihydrochloride

Midazolam&Hydroxyzine dihydrochloride

Midazolam and Hydroxyzine dihydrochloride, once on the operation day, usually ordered 15 minutes before strabismus operation by another anesthesiologist who is charged to perform anesthesia who is not related with the trial.The maximum dose of 0.5 mg/kg midazolam is given orally with the maximum dose of 1mg/kg hydroxyzine dihydrochloride in Yeditepe University Hospital to the pediatric patients by the anesthesiologists. In all groups patients are not selected to the groups and premedication doses are not given by the investigator, they grouped according to the premedication given by the anesthesiologists, after the operation retrospectively.

Drug: MidazolamDrug: Hydroxyzine Dihydrochloride

Interventions

Demizolam 15mg/ml ampules, given orally with cherry juice

Also known as: Dormicum,8699505751689,N05CD08, Demizolam,8699769750077,N05CD08, Zolamide,8680184750025,N05CD08
MidazolamMidazolam&Hydroxyzine dihydrochlorideMidazolam&Hydroxyzine dihydrochloride1/2

Atarax 2mg/ml syrup, given orally

Also known as: ATARAX 200 ml syrup,8699624570062,N05BB01, VALIDOL,8699705590019,N05BB01
Midazolam&Hydroxyzine dihydrochlorideMidazolam&Hydroxyzine dihydrochloride1/2

Eligibility Criteria

Age1 Year - 10 Years
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17)
Sampling MethodNon-Probability Sample
Study Population

Pediatric patients aged between 1 to 10 years who are diagnosed as strabismus or esotropia, and scheduled for strabismus surgery.

You may qualify if:

  • Strabismus, surgery needed
  • Esotropia, surgery needed

You may not qualify if:

  • Chronic disease
  • Arrhythmia
  • Glaucoma(narrow-angle)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

Yeditepe University Ophtalmology Research Center

Istanbul, Beşiktaş, 34349, Turkey (Türkiye)

Location

Yeditepe University Hospital

Istanbul, İçerenköy, Turkey (Türkiye)

Location

Related Publications (3)

  • Oh JN, Lee SY, Lee JH, Choi SR, Chin YJ. Effect of ketamine and midazolam on oculocardiac reflex in pediatric strabismus surgery. Korean J Anesthesiol. 2013 Jun;64(6):500-4. doi: 10.4097/kjae.2013.64.6.500. Epub 2013 Jun 24.

    PMID: 23814649BACKGROUND
  • Koner O, Ture H, Mercan A, Menda F, Sozubir S. Effects of hydroxyzine-midazolam premedication on sevoflurane-induced paediatric emergence agitation: a prospective randomised clinical trial. Eur J Anaesthesiol. 2011 Sep;28(9):640-5. doi: 10.1097/EJA.0b013e328344db1a.

    PMID: 21822077BACKGROUND
  • Kartufan FF, Kizilcik N, Ziylan S, Menda F. Hydroxyzine Dihydrochloride Premedication Is a Necessity for Pediatric Patients Undergoing Strabismus Surgery: An Observational Prospective Clinical Trial. J Ophthalmol. 2022 Sep 21;2022:4137144. doi: 10.1155/2022/4137144. eCollection 2022.

MeSH Terms

Conditions

Strabismus

Interventions

MidazolamHydroxyzineValidol

Condition Hierarchy (Ancestors)

Ocular Motility DisordersCranial Nerve DiseasesNervous System DiseasesEye Diseases

Intervention Hierarchy (Ancestors)

BenzodiazepinesBenzazepinesHeterocyclic Compounds, 2-RingHeterocyclic Compounds, Fused-RingHeterocyclic CompoundsPiperazinesHeterocyclic Compounds, 1-Ring

Limitations and Caveats

this current trial is not a prospective randomized study

Results Point of Contact

Title
Dr. Ferda F. Kartufan
Organization
Yeditepe U

Study Officials

  • Ferda F Kartufan, Assist.Prof

    Yeditepe University Hospital

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
observational
Observational Model
CASE CONTROL
Time Perspective
CROSS SECTIONAL
Target Duration
1 Day
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Assistant Professor

Study Record Dates

First Submitted

December 24, 2018

First Posted

January 16, 2019

Study Start

October 1, 2018

Primary Completion

February 15, 2019

Study Completion

February 15, 2019

Last Updated

October 22, 2019

Results First Posted

October 4, 2019

Record last verified: 2019-10

Data Sharing

IPD Sharing
Will not share

No individual data will be shared.

Locations