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Anesthesia or anaesthesia is a state of controlled, temporary loss of sensation or awareness that is induced for medical or veterinary purposes. It may include some or all of analgesia, paralysis, amnesia, and unconsciousness. An individual under the effects of anesthetic drugs is referred to as being anesthetized.
Local anesthesia is any technique to induce the absence of sensation in a specific part of the body, generally for the aim of inducing local analgesia, i.e. local insensitivity to pain, although other local senses may be affected as well. It allows patients to undergo surgical and dental procedures with reduced pain and distress. In many situations, such as cesarean section, it is safer and therefore superior to general anesthesia.
Eye surgery, also known as ophthalmic surgery or ocular surgery, is surgery performed on the eye or its adnexa. Eye surgery is part of ophthalmology and is performed by an ophthalmologist or eye surgeon. The eye is a fragile organ, and requires due care before, during, and after a surgical procedure to minimize or prevent further damage. An eye surgeon is responsible for selecting the appropriate surgical procedure for the patient, and for taking the necessary safety precautions. Mentions of eye surgery can be found in several ancient texts dating back as early as 1800 BC, with cataract treatment starting in the fifth century BC. It continues to be a widely practiced class of surgery, with various techniques having been developed for treating eye problems.
An anesthetic or anaesthetic is a drug used to induce anesthesia — in other words, to result in a temporary loss of sensation or awareness. They may be divided into two broad classes: general anesthetics, which result in a reversible loss of consciousness, and local anesthetics, which cause a reversible loss of sensation for a limited region of the body without necessarily affecting consciousness.
Awareness under anesthesia, also referred to as intraoperative awareness or accidental awareness during general anesthesia (AAGA), is a rare complication of general anesthesia where patients regain varying levels of consciousness during their surgical procedures. While anesthesia awareness is possible without resulting in any long-term memory of the experience, it is also possible for victims to have awareness with explicit recall, where they can remember the events related to their surgery.
A nurse anesthetist is an advanced practice nurse who administers anesthesia for surgery or other medical procedures. They are involved in the administration of anesthesia in a majority of countries, with varying levels of autonomy. Nurse anesthetists provide all services of anesthesia for patients before, during, and after surgery. Certified Registered Nurse Anesthetists, (CRNA) are dedicated to the safe administration of anesthesia delivery and work within a diverse team. They are dedicated to patient advocacy, safety and professional development. In some localities, nurse anesthetists provide anesthesia to patients independently; in others they do so under the supervision of physicians. In the United States, the physician may be an anesthesiologist, surgeon, or podiatrist. The International Federation of Nurse Anesthetists was established in 1989 as a forum for developing standards of education, practice, and a code of ethics.
A chalazion or meibomian cyst is not a cyst but a granuloma in the eyelid that results from a blocked meibomian gland. It typically occurs in the middle of the eyelid, red, and not painful. They tend to come on gradually over a few weeks.
Oral and maxillofacial surgery is a surgical specialty focusing on reconstructive surgery of the face, facial trauma surgery, the mouth, head and neck, and jaws, as well as facial plastic surgery including cleft lip and cleft palate surgery.
Remifentanil, marketed under the brand name Ultiva is a potent, short-acting synthetic opioid analgesic drug. It is given to patients during surgery to relieve pain and as an adjunct to an anaesthetic. Remifentanil is used for sedation as well as combined with other medications for use in general anesthesia. The use of remifentanil has made possible the use of high-dose opioid and low-dose hypnotic anesthesia, due to synergism between remifentanil and various hypnotic drugs and volatile anesthetics.
Closed-eye hallucinations and closed-eye visualizations (CEV) are hallucinations that occur when one's eyes are closed or when one is in a darkened room. They should not be confused with phosphenes, perceived light and shapes when pressure is applied to the eye's retina, or some other non-visual external cause stimulates the eye. Some people report CEV under the influence of psychedelics; these are reportedly of a different nature than the "open-eye" hallucinations of the same compounds. Similar hallucinations that occur due to loss of vision are called "visual release hallucinations".
Awake is a 2007 American conspiracy thriller film written and directed by Joby Harold. It stars Hayden Christensen, Jessica Alba, Terrence Howard and Lena Olin. The film was released in the United States and Canada by The Weinstein Company and Metro-Goldwyn-Mayer on November 30, 2007.
A retrobulbar block is a regional anesthetic nerve block in the retrobulbar space, which is the area located behind the globe of the eye. Injection of local anesthetic into this space constitutes the retrobulbar block. This injection provides akinesia of the extraocular muscles by blocking cranial nerves II, III, and VI, thereby preventing movement of the globe. Cranial nerve IV lies outside the muscle cone, and therefore is not affected by the local anesthesia. As a result, intorsion of the eye is still possible. It also provides sensory anesthesia of the conjunctiva, cornea and uvea by blocking the ciliary nerves. This block is most commonly employed for cataract surgery, but also provides anesthesia for other intraocular surgeries.
Anorectal abscess is an abscess adjacent to the anus. Most cases of perianal abscesses are sporadic, though there are certain situations which elevate the risk for developing the disease, such as diabetes mellitus, Crohn's disease, chronic corticosteroid treatment and others. It arises as a complication of paraproctitis. Ischiorectal, inter- and intrasphincteric abscesses have been described.
Shoulder replacement is a surgical procedure in which all or part of the glenohumeral joint is replaced by a prosthetic implant. Such joint replacement surgery generally is conducted to relieve arthritis pain or fix severe physical joint damage.
In periodontics, there are four reasons to seek medication. Those four reasons include infection, swelling, pain, and sedation. Although some patients may experience pain, swelling, and infection as a result of an acute periodontal problem such as advanced periodontal disease, periodontic patients usually do not need medication until they are faced with surgery. For successful surgery, medication is then introduced prior to the operation, usually the morning before the procedure and is continued for up to two weeks after.
Perianesthesia nursing is a nursing specialty practice area concerned with providing nursing care to patients undergoing or recovering from anesthesia. Perianesthesia nursing encompasses several subspecialty practice areas and represents a diverse number of practice environments and skill sets.
Brachial plexus block is a regional anesthesia technique that is sometimes employed as an alternative or as an adjunct to general anesthesia for surgery of the upper extremity. This technique involves the injection of local anesthetic agents in close proximity to the brachial plexus, temporarily blocking the sensation and ability to move the upper extremity. The subject can remain awake during the ensuing surgical procedure, or they can be sedated or even fully anesthetized if necessary.
The history of neuraxial anaesthesia dates back to the late 1800s and is closely intertwined with the development of anaesthesia in general. Neuraxial anaesthesia, in particular, is a form of regional analgesia placed in or around the Central Nervous System, used for pain management and anaesthesia for certain surgeries and procedures.
Kathryn Ann Kelly "Kelly" McQueen is an American anesthesiologist and global health expert. She currently practices anesthesiology at the UW Health University Hospital in Madison, Wisconsin and serves as the chair for the Department of Anesthesiology at the University of Wisconsin School of Medicine and Public health.
Joel D. Katz is a Canadian psychologist and researcher. He is a Distinguished Research Professor and Canada Research Chair in Health Psychology at York University. He also serves as the Research Director of the Pain Research Unit in the Department of Anesthesia and Pain Management at the Toronto General Hospital and is a professor in the Department of Anesthesia at the University of Toronto.
References
- 1 2 "Obituary information for Carol J. Weihrer". www.collinsfuneralhome.com. Retrieved 2024-12-15.
- 1 2 CNN.com Operation was wake-up call. October 25, 2005.
- ↑ BBCNews.com. 'I was awake during eye surgery'. June 2, 2004.