How much water can the ommaya sac store

What is an Ommaya reservoir?

An Ommaya reservoir is a soft, plastic, dome-shaped device that’s placed under your scalp, about the size of a quarter. It consists of two parts: the reservoir dome, which sits on top of your skull under your scalp and has a space inside to hold liquid, and the catheter, a thin, flexible tube connected to the dome.

How does an Ommaya reservoir work?

An Ommaya reservoir is tapped by your healthcare provider in your exam room or hospital room. You won’t need to get out of your bed. Your healthcare provider will pump some of your CSF into the reservoir by gently pressing on it. This is done during the tapping process.

How long does Ommaya reservoir procedure take?

• The whole procedure takes 15 to 20 minutes. • Side efects of the procedure may include headache, nausea, or vomiting, and pressure or pain when the needle is put into your reservoir. What happens after my Ommaya Reservoir is used? • You may be asked to lie flat for a period of time after your reservoir is used.

How long does a ventricle last after Ommaya reservoir?

After the Ommaya Reservoir is put in, you'll have to avoid contact sports for 6 weeks while the area heals. After that, it won't need any special care. A ventricle is one of four hollow areas in your brain that contain CSF.

Are Ommaya reservoirs used in cancer treatment?

Yes, doctors often use Ommaya reservoirs in patients with leptomeningeal disease (LMD), specifically solid tumor LMDs such as breast cancer, lung cancer, and melanoma. To learn about Ommaya reservoirs and how they’re used in cancer treatment, we tapped the experts: neuro-oncologist Barbara O’Brien, M.D., and neurosurgeon Jeffrey Weinberg, M.D.

How is Ommaya used in intracavitary delivery?

The Ommaya reservoir has been extensively used for intracavitary delivery. It is composed of a mushroom-shaped reservoir, which is implanted subcutaneously, connected to an outlet catheter, which is positioned within the tumor bed through a burr hole in the skull .