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 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…

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 completed study looked at 309 adults with heart failure to see if increased pressure in the brain is linked to atrial fibrillation (an irregular heartbeat). Researchers measured eye nerve sheath diameter as a sign of brain pressure and used echocardiography to check heart fu…

This study looked at whether ultrasound measurements of the optic nerve sheath (the lining around the eye nerve) can detect increased brain pressure during laparoscopic (keyhole) surgery. Researchers measured the nerve sheath diameter in 55 adults undergoing laparoscopic surgery.…

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 how different ventilator pressure levels (PEEP) affect the optic nerve sheath diameter, which is a noninvasive way to estimate brain pressure. Researchers measured this in 105 patients undergoing spine surgery while lying face down. The goal was to see if hig…

This completed Phase 4 trial looked at how two common anesthetics—desflurane and propofol—affect the optic nerve sheath diameter (a measure of pressure around the eye) in 146 adults undergoing laparoscopic gallbladder removal. The goal was simply to observe differences between th…

This study looked at whether ultrasound measurements of the optic nerve sheath (the lining around the eye nerve) can detect changes in brain pressure during open-heart surgery when patients are on a heart-lung machine. Researchers measured the optic nerve sheath diameter in 40 ad…

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…