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A vitrectomy is a type of eye surgery to treat problems with the retina and vitreous.

A vagus nerve stimulator (VNS) is a device that can help prevent seizures. It can also treat depression, obesity, and other conditions. The pulse generator sits in your chest under your skin, and the leads run from the generator to a vagus nerve in your neck. The device is put in during a surgery.

A pericardial window is a surgery done on the sac around the heart. A small part of the sac is removed to let extra fluid drain from the sac.

Pericardial effusion is the buildup of extra fluid in the sac around the heart (pericardium). If too much fluid builds up, it can put pressure on the heart and prevent it from pumping normally.

Pericardial effusion is the buildup of extra fluid in the sac around the heart. If too much fluid builds up, it can put pressure on the heart and prevent it from pumping normally.

Here are images that show the steps of using a nebulizer with a mouthpiece.

Here are images to help you understand how to put on thigh-high compression stockings.

Endovascular repair is a type of treatment for an abdominal aortic aneurysm (AAA). An AAA is a bulge in the wall of the large artery below your heart.

A foraminotomy is a surgery to widen an area in 1 of your spinal bones (vertebrae). This takes pressure off a nerve that is compressed by the bone.