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Abnormal posturing

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61: 328:. In decerebrate posturing, the head is arched back, the arms are extended by the sides, and the legs are extended. A hallmark of decerebrate posturing is extended elbows. The arms and legs are extended and rotated internally. The patient is rigid, with the teeth clenched. The signs can be present on only one side of the body or on both sides, and they may be present just in the arms, and they may be intermittent. 430:
is occurring or is about to occur. Brain herniation is an extremely dangerous condition in which parts of the brain are pushed past hard structures within the skull. In herniation syndrome, which is indicative of brain herniation, decorticate posturing occurs, and, if the condition is left untreated,
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which facilitates motor neurons in the lower spinal cord supplying flexor muscles of the lower extremities. Since the corticospinal tract is interrupted, the pontine reticulospinal and the medial and lateral vestibulospinal biased extension tracts greatly overwhelm the medullary reticulospinal biased
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Decorticate posturing is also called decorticate response, decorticate rigidity, flexor posturing, or, colloquially, "mummy baby". Patients with decorticate posturing present with the arms flexed, or bent inward on the chest, the hands are clenched into fists, and the legs extended and feet turned
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strokes. A patient with decorticate posturing may begin to show decerebrate posturing, or may go from one form of posturing to the other. Progression from decorticate posturing to decerebrate posturing is often indicative of uncal (transtentorial) or tonsilar
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causes the working set of muscles to contract. The posturing may also occur without a stimulus. Since posturing is an important indicator of the amount of damage that has occurred to the brain, it is used by medical professionals to measure the severity of a
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is thought to be important in decerebrate rigidity due to studies in animals showing that dorsal-root transection eliminates decerebrate rigidity symptoms. Transection releases the centres below the site from higher inhibitory controls.
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The effects on these two tracts (corticospinal and rubrospinal) by lesions above the red nucleus is what leads to the characteristic flexion posturing of the upper extremities and extensor posturing of the lower extremities.
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patients that display decerebrate or decorticate posturing have worse outcomes than those that do not. Changes in the condition of the patient may cause alternation between different types of posturing.
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De Rosa G, Delogu AB, Piastra M, Chiaretti A, Bloise R, Priori SG (2004). "Catecholaminergic polymorphic ventricular tachycardia: successful emergency treatment with intravenous propranolol".
304:, decerebrate posturing is usually indicative of more severe damage at the rubrospinal tract, and hence, the red nucleus is also involved, indicating a lesion lower in the brainstem. 1107: 195:
requiring immediate medical attention. Decerebrate and decorticate posturing are strongly associated with poor outcome in a variety of conditions. For example, near-
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Three types of abnormal posturing are decorticate posturing, with the arms flexed over the chest; decerebrate posturing, with the arms extended at the sides; and
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Obi, T; Takatsu M; Kitamoto T; Mizoguchi K; Nishimura Y (1996). "A case of Creutzfeldt–Jakob disease (CJD) started with monoparesis of the left arm".
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Decerebrate posturing is also called decerebrate response, decerebrate rigidity, or extensor posturing. It describes the involuntary extension of the
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Berne and Levy principles of physiology/ Matthew N. Levy, Bruce M. Koeppen, Bruce A. Stanton.-4th ed. Philadelphia, PA: Elsevier Mosby, 2006.
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In children younger than age two, posturing is not a reliable finding because their nervous systems are not yet developed. However,
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In competitive contact sports, posturing (typically of the forearms) can occur with an impact to the head and is termed the
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inward. A person displaying decorticate posturing in response to pain gets a score of three in the motor section of the
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A person displaying decerebrate posturing in response to pain receives a score of two in the motor section of the
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Idro, R; Otieno G; White S; Kahindi A; Fegan G; Ogutu B; Mithwani S; Maitland K; Neville BG; Newton CR (2005).
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For reasons that are poorly understood, but which may be related to high intracranial pressure, children with
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in the cervical spinal cord supplying the flexor muscles of the upper extremities. The rubrospinal tract and
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Nagel, FO; Kibel SM; Beatty DW (1990). "Childhood near-drowning—factors associated with poor outcome".
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Decorticate posturing, with elbows, wrists and fingers flexed, and legs extended and rotated inward
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Elovic E, Edgardo B, Cuccurullo S (2004). "Traumatic brain injury". In Cuccurullo SJ (ed.).
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Traumatic brain injury, Stroke, Intracranial hemorrhage, Brain tumors, and Encephalopathy.
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Decorticate posturing indicates that there may be damage to areas including the
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The second component of decorticate posturing is the disruption of the lateral
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and traumatic brain injury can both cause decorticate posturing in children.
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are also known to cause the brain to swell and cause this posturing effect.
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Normally people displaying decerebrate or decorticate posturing are in a
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frequently exhibit decorticate, decerebrate, and opisthotonic posturing.
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Silverberg, Mark; Greenberg, Michael R.; Hendrickson, Robert A. (2005).
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Posturing can be caused by conditions that lead to large increases in
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becomes incapacitated while the opposing set is not, and an external
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Davis, RA; Davis, RL (May 1982). "Decerebrate rigidity in humans".
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Decorticate posture: Decorticate rigidity, abnormal flexor response
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was first to describe decerebrate posturing after transecting the
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of cats and monkeys, causing them to exhibit the posturing.
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Decerebrate and decorticate posturing can indicate that
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The presence of abnormal posturing indicates a severe
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Decerebrate rigidity or abnormal extensor posturing.
1741: 1659: 1626: 1528: 1444: 1357: 1292: 1134: 1066: 1018: 434:Posturing has also been displayed by patients with 346:damage, specifically damage below the level of the 136: 124: 119: 212:, in which the head and back are arched backward. 44:"Decorticate" redirects here. For other uses, see 707:Physical Medicine and Rehabilitation Board Review 803:Radiology Cases in Pediatric Emergency Medicine 449:It has also been observed in cases of hanging. 700: 698: 696: 694: 539: 537: 236:There are two parts to decorticate posturing. 1108: 8: 920:Sauvageau, Anny; Racette, StĂ©phanie (2007). 831:Ayling, J (2002). "Managing head injuries". 762:Greenberg's Text-Atlas of Emergency Medicine 709:. Demos Medical Publishing. pp. 54–55. 358:. Decerebrate posturing is commonly seen in 792: 790: 755: 753: 751: 749: 1115: 1101: 1093: 1015: 268:biased extension in the upper extremities. 116: 994: 984: 826: 824: 614:Medical Encyclopedia: Abnormal posturing. 102:Learn how and when to remove this message 835:. Vol. 31, no. 8. p. 42. 311: 159:of the arms and legs, indicating severe 568: 566: 564: 562: 560: 533: 728: 726: 240:The first is the disinhibition of the 639:. Lippincott Williams & Wilkins. 431:develops into decerebrate posturing. 296:. It may also indicate damage to the 7: 252:. The rubrospinal tract facilitates 1862:Symptoms and signs: Nervous system 1165:Festinating gait/Parkinsonian gait 899:10.1097/01.pec.0000117927.65522.7a 262:medial and lateral vestibulospinal 25: 27:Strange posture from brain injury 1759:Overpronation/Flexible flat feet 938:10.1111/j.1556-4029.2007.00459.x 677:10.1097/00006123-198205000-00017 342:Decerebrate posturing indicates 59: 623:Retrieved on September 3, 2007. 84:check for citation inaccuracies 258:medullary reticulospinal tract 1: 743:. Retrieved January 15, 2007. 633:Shah, Tilak (November 2008). 588:South African Medical Journal 554:. Retrieved January 15, 2007. 260:biased flexion outweighs the 1210:Myopathic gait/Waddling gait 926:Journal of Forensic Sciences 337:Pediatric Glasgow Coma Scale 266:pontine reticulospinal tract 186:Pediatric Glasgow Coma Scale 163:. It occurs when one set of 797:Yamamoto, Loren G. (1996). 619:September 11, 2007, at the 1878: 833:Emergency Medical Services 391:. Such conditions include 43: 36: 29: 1611:Lower motor neuron lesion 1606:Upper motor neuron lesion 1411:Myotonia / Pseudomyotonia 1126:relating to movement and 436:Creutzfeldt–Jakob disease 244:with facilitation of the 886:Pediatric Emergency Care 550:October 3, 2005, at the 324:in response to external 248:due to severment of the 37:Not to be confused with 32:Posture (disambiguation) 401:intracranial hemorrhage 986:10.1186/1475-2875-4-57 393:traumatic brain injury 317: 225: 138:Differential diagnosis 1718:Boutonniere deformity 734:"Decorticate Posture" 636:NMS Medicine Casebook 545:"Decorticate Posture" 389:intracranial pressure 335:(for adults) and the 315: 223: 184:(for adults) and the 18:Decorticate posturing 1789:Clasp-knife response 572:WrongDiagnosis.com, 286:cerebral hemispheres 30:For other uses, see 1821:Conversion disorder 1723:Swan neck deformity 1646:Locomotive syndrome 543:AllRefer.com. 2003 506:Charles Sherrington 494:respiratory failure 419:. Diseases such as 369:gamma motor neurons 354:and lesions in the 273:corticospinal tract 250:corticospinal tract 1558:Spastic paraplegia 1548:Spastic paraplegia 1543:Periodic paralysis 1452:Abnormal posturing 1317:Dysdiadochokinesia 1253:Asynchronous gait 1215:Trendelenburg gait 1175:Marche Ă  petit pas 1124:Signs and symptoms 1067:External resources 857:Rinsho Shinkeigaku 739:2008-10-14 at the 486:cardiac arrhythmia 417:spastic hemiplegia 333:Glasgow Coma Scale 318: 231:Glasgow Coma Scale 226: 182:Glasgow Coma Scale 151:is an involuntary 149:Abnormal posturing 120:Abnormal posturing 1849: 1848: 1538:Flaccid paralysis 1359:Abnormal movement 1349:Hemimotor neglect 1307:Cerebellar ataxia 1257:Gunslinger's gait 1155:Cerebellar ataxia 1090: 1089: 864:(11): 1245–1248. 484:, with risks for 322:upper extremities 246:rubrospinal tract 193:medical emergency 146: 145: 114:Medical condition 112: 111: 104: 16:(Redirected from 1869: 1553:Spastic diplegia 1520:Tonic immobility 1512:Waxy flexibility 1456:Stooped posture 1262:Hemiparetic gait 1243:Asymmetric gait 1142:Gait abnormality 1117: 1110: 1103: 1094: 1016: 1009: 1008: 998: 988: 964: 958: 957: 917: 911: 910: 880: 874: 873: 851: 845: 844: 828: 819: 818: 816: 814: 794: 785: 782: 776: 775: 757: 744: 730: 721: 720: 702: 689: 688: 660: 651: 650: 630: 624: 610: 604: 603: 583: 577: 570: 555: 541: 440:cerebral hypoxia 428:brain herniation 377:fencing response 367:. 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Index

Decorticate posturing
Posture (disambiguation)
poor posture
Decorticator
Decortication
citations
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Specialty
Neurology
Differential diagnosis
flexion
extension
brain injury
muscles
stimulus
pain
coma
Glasgow Coma Scale
Pediatric Glasgow Coma Scale
medical emergency
drowning
opisthotonus

Glasgow Coma Scale
red nucleus
rubrospinal tract
corticospinal tract
motor neurons

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