Acetazolamide to Prevent Post Operative CSF Leak

Study Overview
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Brief Summary
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The purpose of this research is to test the use of Acetazolamide in preventing post-operative cerebrospinal fluid leak in patients having endoscopic skull base surgery (it is a surgery performed through the nose and sinus).

Official Title
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Pilot Study of Acetazolamide to Prevent Post Operative Cerebrospinal Fluid (CSF) Leak in Patients Undergoing Endoscopic Skull Base Surgery

Conditions
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Cerebrospinal Fluid Leak

Intervention / Treatment
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* Drug: Acetazolamide


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Elective transsphenoidal resection of a tumor expected to result in an intraoperative high flow CSF leak; such tumors include craniopharyngioma, meningioma, and Rathke cleft cyst. Elective transsphenoidal resection of a pituitary adenoma, with BMI >25, or with observed low or high flow CSF leak during surgery, conferring an elevated risk of postoperative CSF leak. Patients who voluntarily sign Informed Consent Male subjects and female subjects of childbearing potential and at risk for pregnancy must agree to use a highly effective method of contraception during study treatment and for at least 1 month after stopping study treatment. Male subjects should refrain from donating semen during treatment and 1 month after stopping treatment. Exclusion Criteria: Adults unable to consent Individuals who are not yet adults (infants, children, teenagers) Pregnant women Prisoners Patients with prior adverse reactions to acetazolamide or who are taking aspirin concomitantly (which may increase the risk of adverse reactions to acetazolamide) Patients with moderate to severe chronic obstructive pulmonary disease (which may increase the risk of adverse effects of acetazolamide) Acetazolamide therapy is contraindicated in situations in which sodium and/or potassium blood serum levels are depressed, in cases of marked kidney and liver disease or dysfunction, in suprarenal gland failure, and in hyperchloremic acidosis. It is contraindicated in patients with cirrhosis because of the risk of development of hepatic encephalopathy Sulfonamide allergy Pregnant females, breastfeeding females, and males and females of childbearing potential who are unwilling or unable to use a highly effective method of contraception

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: Acetazolamide Arm<br>Acetazolamide 500 mg twice per day for 5 consecutive days post standard-of-care endoscopic skull base surgery | Drug: Acetazolamide<br>* Acetazolamide 500 mg by mouth twice per day for 5 days<br>* Other names: Diamox;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence of CSF Leakage | Occurrence of postoperative CSF leak within 30 days of surgery confirmed on clinical exam as well as on CT scan, endoscopic visualization, or confirmation via beta transferrin testing. | 30 days | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence of suspected drug adverse events | Treatment emergent adverse events as assessed by treating physician discretion. | 14 days |