| posttraumatic psychosis | Psychosis following trauma, especially to the head. Compare: traumatic psychosis. (05 Mar 2000) |
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| posttraumatic stress | A psychological disorder that develops in some individuals who have had major traumatic experiences (and, for example, have been in a serious accident or through a war). The person is typically numb at first but later has symptoms including depression, excessive irritability, guilt (for having survived while others died), recurrent nightmares, flashbacks to the traumatic scene, and overreactions to sudden noises. Posttraumatic stress became known in the 70s due to the adjustment problems of some vietnam veterans. It was listed as a diagnostic category by the american psychiatric association in 1980. Although the name post-traumatic stress was new, the condition was not. It was known as shell shock in world war i and battle fatigue during world war II. (12 Dec 1998) |
| posttraumatic stress disorder | Development of characteristic symptoms following a psychologically traumatic event that is generally outside the range of usual human experience; symptoms include numbed responsiveness to environmental stimuli, a variety of autonomic and cognitive dysfunctions, and dysphoria. (05 Mar 2000) |
| posttraumatic stress syndrome | <syndrome> A disorder appearing after a physically or psychologically traumatic event outside the range of usual human experience, (e.g., a serious threat to one's life or seeing a loved one killed), characterised by symptoms of re-experiencing the event, numbing of responsiveness to the environment, exaggerated startle response, guilt feelings, impairment of memory, and difficulties in concentration and sleep. (05 Mar 2000) |
| posttraumatic syndrome | <syndrome> A clinical disorder that often follows head injury, characterised by headache, dizziness, neurasthenia, hypersensitivity to stimuli, and diminished concentration. Synonym: traumatic neurasthenia. (05 Mar 2000) |
| neoplasms, posttraumatic | Cancers, tumours, or other neoplasms caused by or resulting from trauma or other non-radiation injuries. (12 Dec 1998) |
| stress disorders, posttraumatic | Anxiety disorders manifested by the development of characteristic symptoms following a psychologically traumatic event that is outside the normal range of usual human experience. Symptoms include re-experiencing the traumatic event and numbing of responsiveness to or reduced involvement with the external world. (12 Dec 1998) |
| immediate posttraumatic automatism | A posttraumatic state in which the patient performs automatically without immediate or later memory of that behaviour. (05 Mar 2000) |
| immediate posttraumatic convulsion | A convulsion beginning very soon after injury. (05 Mar 2000) |
| early posttraumatic epilepsy | Seizures beginning within one week after severe head injury. (05 Mar 2000) |
| epilepsy, posttraumatic | Epileptic seizures occurring as the result of trauma such as a gunshot wound or other injury to the brain. (12 Dec 1998) |
| acromial arterial network | A vascular network between the acromion and the skin of the shoulder, formed by anastomoses of the acromial branch of the suprascapular artery with the acromial branch of the thoracoacromial artery. Synonym: rete acromiale, acromial plexus. (05 Mar 2000) |
| alveolar-arterial oxygen difference | The difference or gradient between the partial pressure of oxygen in the alveolar spaces and the arterial blood: P(A-a)02. Normally in young adults this value is less than 20 mm Hg. See: alveolar gas equation. (05 Mar 2000) |
| arterial | <anatomy> Pertaining to an artery or to the arteries. (18 Nov 1997) |
| arterial arcades | A series of anastomosing arterial arches, as the intestinal arterial arcades between the branches of the jejunal and ileal arteries in the mesentery and the pancreaticoduodenal arteries on the head of the pancreas. (05 Mar 2000) |