Clinical trial NCT06501716: ICG Angiogram as a Predictor of Postoperative Visual Function After EEA Surgery
Official title: I See G: Superior Hypophyseal Artery Intraoperative Indocyanine Green Angiogram as a Predictor of Postoperative Visual Function After Endoscopic Endonasal Surgery
Study type: OBSERVATIONAL
Overall status: NOT_YET_RECRUITING
Conditions: Indocyanine Green
Skull Base Neoplasms
Lead sponsor: University of California, San Francisco
Sponsor class: OTHER
First posted: 2024-07-15
Enrollment: 40
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Participants diagnosed in the clinic with sellar or suprasellar pituitary tumors and scheduled for an endoscopic endonasal surgical resection will be approached to obtain consent to participate in this study. These patients will be identified by the PI of this study who will recommended the use of ICG based in the tumor characteristics and risk-benefit potential for the patient.

Brief summary: Endonasal endoscopic approaches are an established treatment for suprasellar lesions compromising the optic nerves (ON). Surgery often involves dissecting tumors from the optic nerves and its blood supply, which can result in nerve damage and visual loss after surgery. To date, there are no reliable methods to monitor the optic nerve function during surgery and thus, post-surgical visual outcomes is unknown until the patients are fully awake after surgery for a visual exam. This delay in diagnosis prevents early therapeutic measures and can result in further harm to the ON. We have recently recognized that when ICG is routinely injected during these cases to check for patency of the big arteries the sub millimetric superior hypophyseal arteries supplying (SHA) the ON are also visible and that lack of visualization of these vessels is associated with worse visual deficits after surgery. Thus, ICG may be a tool to intraoperative predict visual outcomes after endonasal approach for suprasellar lesions and fill the nondiagnostic gap. This study will assess whether endoscopic ICG angiography before and after resection of suprasellar lesions can predict post-operative visual deficits. Successful completion will provide surgeons a novel tool to assess visual function during surgery. The ICG endoscopic angiograms suggested in this study are noninvasive and currently routinely performed at the end of surgery to check for patency of big brain arteries.


Eligibility criteria: Inclusion Criteria:

* The study will enroll adult (18 y.o. and older) participants undergoing endonasal endoscopic surgery for suprasellar tumors including meningiomas, craniopharyngiomas and pituitary adenomas.

Exclusion Criteria:

* Underage patients (younger than 18 y.o).

Primary outcomes:
measure: Percentage of Patients with Post Operative Visual Acuity Impairment and Visual Field Defect
timeFrame: From the surgery to first post-operative follow up (6 weeks)
Secondary outcomes:
Other outcomes:
Locations:
city: San Francisco
country: United States
facility: University of California, San Francisco
state: California
Study officials:
affiliation: University of California, San Francisco
name: Ezequiel Goldschmidt, MD, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Osorio RC, Aabedi AA, El-Sayed IH, Gurrola J 2nd, Goldschmidt E. Superior Hypophyseal Artery Intraoperative Indocyanine Green Angiogram as a Predictor of Postoperative Visual Function After Endoscopic Endonasal Surgery. Oper Neurosurg (Hagerstown). 2023 Oct 1;25(4):379-385. doi: 10.1227/ons.0000000000000809. Epub 2023 Jun 27.
citation: Shahein M, Prevedello DM, Beaumont TL, Ismail K, Nouby R, Palettas M, Prevedello LM, Otto BA, Carrau RL. The role of indocyanine green fluorescence in endoscopic endonasal skull base surgery and its imaging correlations. J Neurosurg. 2020 Nov 13;135(3):923-933. doi: 10.3171/2020.6.JNS192775. Print 2021 Sep 1.
citation: Ramesh R, Gurrola JG 2nd, Goldschmidt E. Use of Real-Time Superior Hypophyseal Artery Indocyanine Green Angiogram During Endoscopic Resection of a Third Ventricular Craniopharyngioma: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). 2025 Jan 1;28(1):123-124. doi: 10.1227/ons.0000000000001225. Epub 2024 Jun 7. No abstract available.
citation: Lee MH, Lee TK. Application of fusion-fluorescence imaging using indocyanine green in endoscopic endonasal surgery. J Clin Neurosci. 2022 Apr;98:45-52. doi: 10.1016/j.jocn.2022.01.023. Epub 2022 Feb 4.