spinal anaesthesia

spinal anaesthesia
1. suppression of sensation, usually in the lower part of the body, by the injection of a local anaesthetic into the subarachnoid space. A very fine needle is used to reduce the amount of cerebrospinal fluid that escapes as the needle penetrates the dura. The technique has complications (headache, sepsis, paraplegia). The injection site for spinal anaesthetics is most often in the lumbar region of the vertebral column, the needle being inserted between the vertebrae (anywhere between the second and fifth). The extent of the area anaesthetized depends upon the amount and strength of local anaesthetic injected. Dilute local anaesthetic solutions are used when the sensory nerves are targeted rather than the motor nerves. Spinal anaesthesia is useful in patients whose condition makes them unsuitable for a general anaesthetic, perhaps because of chest infection; to reduce the requirements for general anaesthetic drugs; or in circumstances where a skilled anaesthetist is not readily available to administer a general anaesthetic.
2. loss of sensation in part of the body as a result of injury or disease to the spinal cord. The area of the body affected depends upon the site of the lesion: the lower it is in the cord the less the sensory disability.

Medical dictionary. 2011.

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  • spinal anaesthesia — noun anesthesia of the lower half of the body; caused by injury to the spinal cord or by injecting an anesthetic beneath the arachnoid membrane that surrounds the spinal cord • Syn: ↑spinal anesthesia, ↑spinal • Hypernyms: ↑regional anesthesia,… …   Useful english dictionary

  • spinal anaesthesia — 1) suppression of sensation, usually in the lower part of the body, by the injection of a local anaesthetic into the subarachnoid space. A very fine needle is used to reduce the amount of cerebrospinal fluid that escapes as the needle penetrates… …   The new mediacal dictionary

  • Spinal anaesthesia — Spinal analgesia, (or commonly called spinal anesthesia or sub arachnoid block (S.A.B.)) is a form of regional anaesthesia involving injection of a local anaesthetic into the cerebrospinal fluid (CSF), generally through a fine needle, usually 3.5 …   Wikipedia

  • spinal anesthesia — noun anesthesia of the lower half of the body; caused by injury to the spinal cord or by injecting an anesthetic beneath the arachnoid membrane that surrounds the spinal cord • Syn: ↑spinal anaesthesia, ↑spinal • Hypernyms: ↑regional anesthesia,… …   Useful english dictionary

  • anaesthesia — n. loss of feeling or sensation in a part or all of the body. Anaesthesia of a part of the body may occur as a result of injury to or disease of a nerve; for example in leprosy. The term is usually applied, however, to the technique of reducing… …   Medical dictionary

  • anaesthesia — n. loss of feeling or sensation in a part or all of the body. Anaesthesia of a part of the body may occur as a result of injury to or disease of a nerve; for example in leprosy. The term is usually applied, however, to the technique of reducing… …   The new mediacal dictionary

  • Anaesthesia —     Anæsthesia     † Catholic Encyclopedia ► Anæsthesia     (From Greek a, privative, and aisthesis, feeling).     A term in medicine, and the allied sciences, signifying a state of insensibility to external impressions, consequent upon disease,… …   Catholic encyclopedia

  • Анестезия Спинномозговая (Spinal Anaesthesia) — 1. Обезболивание (обычно нижней части тела) с помощью инъекции местного анестетика в пространство, окружающее спинной мозг. Существуют два вида спинномозговой анестезии, применяемых в хирургии: это подпаутинная (субарахноидальная (subarachnoid))… …   Медицинские термины

  • Combined spinal and epidural anaesthesia — (CSE) is a regional anaesthetic technique, which combines the benefits of both spinal anaesthesia and epidural anaesthesia and analgesia. The spinal component gives a rapid onset of a predictable block. The indwelling epidural catheter gives the… …   Wikipedia

  • Regional anaesthesia — Regional anaesthesia, is anesthesia affecting only a large part of the body, such as a limb. Regional anaesthetic techniques can be divided into central and peripheral techniques. The central techniques include so called neuroaxial blocks… …   Wikipedia

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