When patients undergo general anesthesia, their brain activity often slows down as they sink into unconsciousness. Higher doses of anesthetic drugs can induce an even deeper state of unconsciousness known as burst suppression, ...
Jul 17, 2023
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Ketamine is useful for treating depression, but unfortunately, it can cause dissociative symptoms—such as having an out-of-body experience or feeling emotionally numb.
May 2, 2023
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Giving patients excess levels of oxygen during surgery is associated with a higher risk of subsequent kidney, heart, and lung injury, finds a large U.S. study published by The BMJ today.
Nov 30, 2022
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The purpose of anesthesia is to put the brain into an unconscious state in which stimuli such as sounds are not perceived. In this state, the neurons in the auditory cortex are still stimulated by sounds, but the latter are ...
Oct 12, 2022
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Fentanyl is used to supplement sedation and to relieve severe pain during and after surgery, but it's also one of the deadliest drugs of the opioid epidemic. In research conducted by investigators at Massachusetts General ...
Aug 30, 2022
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Science may be one step closer to understanding where consciousness resides in the brain. A new study shows the importance of certain types of neural connections in identifying consciousness.
Jul 29, 2022
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Most major surgeries would not be possible without anesthesia to render a patient unconscious and pain free and to ensure that their vital functions—including blood pressure, breathing, and heart rate and rhythm—remain ...
Jul 20, 2022
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The cerebral cortex is thought to be the seat of conscious processing in the brain. Rather than being inactivated, specific cells in the cortex show higher spontaneous activity during general anesthesia than when awake, and ...
May 12, 2022
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Imagine the conscious brain as a sea roiling with the collisions and dispersals of waves of different sizes and shapes, swirling around and flowing across in many different directions. Now imagine that an ocean liner lumbers ...
Apr 27, 2022
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Spinal anesthesia is not safer or more effective than general anesthesia in patients who undergo surgery for hip fractures, according to a major study.
Feb 7, 2022
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