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Hemodynamic InstabilityEarly Phase 1TOPIACNCT02955524

Topical Anesthesia and Intra-arterial Chemotherapy for Retinoblastoma

A Early Phase 1 study testing Tetracaine 0.5% and Lidocaine hydrochloride ophthalmic gel 3.5% in people with Hemodynamic Instability, run by University of Miami.

Withdrawn

Withdrawn. The study stopped before anyone enrolled.

Official record
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Trial summary

The objective of this study is to use local topical anesthesia to numb the sensory input, captured by branches of the Trigeminal nerve found on the skin in and around the eye, to decrease a hemodynamic reflex seen during placement of a catheter for intra-arterial chemotherapy (IAC) for eye tumors in children. Read more about this study

Who is it for?
Ages 8 weeks and older
Conditions the study is for
Hemodynamic Instability
What is being tested?
Tetracaine 0.5% and Lidocaine hydrochloride ophthalmic gel 3.5%
Could I receive a placebo?
No, everyone receives an active treatment
How many people
0 participants
Where
No sites listed yet
Study dates
Mar 2018to Dec 2020
Phase
Early Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 8 weeks and older
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Who may be able to join

  • Children with Retinoblastoma diagnosis scheduled for Intra-arterial chemotherapy under general anesthesia

Who cannot join

  • any candidate with history of allergy to anesthetics or preservatives used in local anesthetics any candidate that has a history of allergic dermatitis any candidate that has an open wound in and around the eye to be treated

About this study

Official title: Topical Anesthesia to Decrease the Trigeminal-Cardiac Reflex During Intra-arterial Injection of Chemotherapy for Retinoblastoma in Children.

The objective of this study is to use local topical anesthesia to numb the sensory input, captured by branches of the Trigeminal nerve found on the skin in and around the eye, to decrease a hemodynamic reflex seen during placement of a catheter for intra-arterial chemotherapy (IAC) for eye tumors in children. This Trigeminal-cardiac reflex brings about hemodynamic instability during general anesthesia.

Normally, one could block this sensorial input with ophthalmic peribulbar placement of local anesthetics, but these eyes have malignant growth and invasive procedures may cause more harm. The investigators are aiming to numb the sensory branches of the trigeminal nerve non-invasively and observe for any decrease in these events.

Read the detailed description

Retinoblastoma is a rare tumor of the eye and accounts for 6% of malignancies in children less than 5 years of age. Pediatric anesthesiologists have observed a series of hemodynamic instability following the insertion of a catheter into the cavernous segment of the internal carotid artery or during manipulation of a micro-catheter into the ophthalmic artery for intra-arterial chemotherapy (IAC) of retinoblastoma cases by neuroradiologists. This reaction has been recently published in case reports and observational studies as the treatment of these tumors have moved into the interventional imaging suites. This reaction closely resembles the "diving reflex" seen when a person is submerged in cold water; known as the trigeminal-cardiac reflex. It manifests as a sudden hemodynamic disturbance in arterial blood pressure, heart rate, arrhythmia and changes in pulmonary compliance.Rescue from a trigeminal-cardiac reflex entails increasing intravascular volume, administrating mild to resuscitative doses of epinephrine and ventilatory support.

Catheter manipulation around the ophthalmic artery can stimulate the afferent pathway of the trigeminal nerve, branches V1 and V2, originating around the eye to be treated.The ethmoidal nerve, from the nasal passage on the same side, is also stimulated. This in turn triggers a response by the vagus nerve with hemodynamic instability.

Method: Participants are placed under general endotracheal anesthesia for this scheduled procedure. One drop of ocular antiseptic (betadine 5%) will be placed in the eye to be treated followed by a drop of topical FDA approved local anesthetic, Tetracaine 0.5%, to the nasolacrimal duct ( inner corner of the eye) on the eye to be treated. This will numb the ethmoidal nerve in the nasal passage. This is followed by 1 ml of 3.5% Lidocaine gel to the surface of the eye. This gel is placed on the surface of the eye and skin around the eye to numb V1 and V2 fibers of the trigeminal nerve. The study will observe if there is any decrease in the intensity of the reflex or incidence of the reflex during placement of the micro-catheter.

Being tested
Tetracaine 0.5%, Lidocaine hydrochloride ophthalmic gel 3.5%

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Tetracaine 0.5%Drug

    One drop of 0.5% Proparacaine to nasolacrimal Duct to numb the ethmoidal nerve in the nasal passage on the side of the eye to be treated.

  • Lidocaine hydrochloride ophthalmic gel 3.5%Drug

    Also called Akten

    1ml of lidocaine gel is placed over the conjunctivae of the eye to be treated after the patient is under general anesthesia and before the procedure

Study groups in NCT02955524
Study groupRoleWhat they receive
Treatment session 1aExperimentalTopical ophthalmic anesthesia to participants (#) on each session (letter) of intra-arterial chemotherapy. where #1 is the participant identifier and letter-a is the start session with study protocol (most candidates will receive more than 4 sessions in a 6 month period)
Receives: Drug: Tetracaine 0.5%; Drug: Lidocaine hydrochloride ophthalmic gel 3.5%

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Decrease in systolic Blood Pressure

    Interventionalist will communicate to the investigator of the catheter placement and our outcome measure will be recorded soon after.

    Measured: 5 seconds

  2. Drop in end-tidal C02

    Interventionalist will communicate to the investigator of the catheter placement and our outcome measure will be recorded soon after.

    Measured: 5 seconds

  3. Decrease in lung compliance

    Interventionalist will communicate to the investigator of the catheter placement and our outcome measure will be recorded soon after.

    Measured: 5 seconds

  4. Decrease in oxygen saturation

    Interventionalist will communicate to the investigator of the catheter placement and our outcome measure will be recorded soon after.

    Measured: 5 seconds

  5. Cardiac arrythmia

    Interventionalist will communicate to the investigator of the catheter placement and our outcome measure will be recorded soon after.

    Measured: 5 seconds

Secondary outcomes (1)
  1. Recovery from Trigeminal-cardiac event

    Investigator will communicate when the event is over or rescue drugs given.

    Measured: 2 minutes

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted4 Nov 2016 (estimated)
  2. Study startMar 2018 (estimated)
  3. Primary completionJun 2020 (estimated)
  4. Study completionDec 2020 (estimated)

Why it stopped: I discontinued this study because I transferred to another institution.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Early Phase 1
Primary purpose
Prevention
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
0 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02955524
Sponsor's protocol ID
20161001
Acronym
TOPIAC
Status last verified
Apr 2018
First submitted
2 Nov 2016
Last updated
20 Apr 2018
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Publications

  • Scharoun JH, Han JH, Gobin YP. Anesthesia for Ophthalmic Artery Chemosurgery. Anesthesiology. 2017 Jan;126(1):165-172. doi: 10.1097/ALN.0000000000001381. No abstract available.

    PubMed 27748655
  • Jabbour P, Chalouhi N, Tjoumakaris S, Gonzalez LF, Dumont AS, Chitale R, Rosenwasser R, Bianciotto CG, Shields C. Pearls and pitfalls of intraarterial chemotherapy for retinoblastoma. J Neurosurg Pediatr. 2012 Sep;10(3):175-81. doi: 10.3171/2012.5.PEDS1277. Epub 2012 Jul 13.

    PubMed 22793160

Questions about this trial

What is this clinical trial studying?

A Early Phase 1 study testing Tetracaine 0.5% and Lidocaine hydrochloride ophthalmic gel 3.5% in people with Hemodynamic Instability, run by University of Miami.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: withdrawn, as of the sponsor's last update on 20 Apr 2018. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Early Phase 1 (sometimes called Phase 0) studies give a very small amount of a treatment to a few people, mainly to see how the body handles it.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study was withdrawn before enrolling participants, so there are no results.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Decrease in systolic Blood Pressure (time frame: 5 seconds). The study lists 5 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02955524, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 Apr 2018.

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