OPTIC NERVE SHEATH DIAMETER

This study tested whether an injection of plasma-rich fibrin (a substance made from the patient's own blood) could relieve severe headaches that sometimes occur after a spinal tap or epidural. Sixty adults with this type of headache received the injection through a special cathet…

This completed Phase 4 trial at the All India Institute of Medical Sciences compared two common anesthetics—desflurane (a gas) and propofol (an IV drug)—to see how they affect the optic nerve sheath diameter, a marker of brain pressure. The study involved 146 adults aged 18-60 un…

This study looked at whether applying extra breathing pressure (PEEP) during laparoscopic gallbladder surgery changes the size of the optic nerve sheath, which can indicate brain pressure. Researchers measured the nerve sheath with ultrasound at three points during surgery in 34 …

This study looked at 80 adults having open gynecologic surgery to see if the amount of anesthesia gas affects the size of the nerve at the back of the eye. Researchers measured the optic nerve sheath using ultrasound before and during surgery with either minimal or high gas flow.…

This study looked at whether ultrasound can measure changes in the optic nerve sheath (a part of the eye) to monitor brain pressure during liposuction. Fifty-five adults having liposuction under sedation took part. The goal was to see if lying face-down during surgery affects eye…

This study looked at 309 older adults with a type of heart failure (HFpEF) to see if fluid pressure in the brain is linked to atrial fibrillation (AFib), an irregular heartbeat. Researchers used a simple eye ultrasound to measure brain pressure and found that higher pressure was …

This study looked at how different levels of pressure from a breathing machine (called PEEP) affect the optic nerve sheath diameter, which is a way to check pressure inside the skull. Researchers studied 105 adults having spine surgery while lying on their stomach. They measured …

This study looked at 40 adults having open-heart surgery to see if ultrasound measurements of the optic nerve sheath (the lining around the eye nerve) can detect changes in brain pressure during heart-lung bypass. Researchers measured the nerve sheath at several points during sur…

This study looked at whether a simple eye ultrasound can detect changes in brain pressure during laparoscopic (keyhole) surgery. 55 adults having laparoscopic surgery had their optic nerve sheath diameter measured with ultrasound during the procedure. The goal was to see if this …

This study looked at 63 women having laparoscopic hysterectomy to see if two different anesthetics (sevoflurane and desflurane) affect pressure inside the head differently. The researchers measured the optic nerve sheath diameter using ultrasound as a non-invasive way to check br…