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47 Possible Causes for Decorticate Posture, Fixed Pupils

  • Brain Stem Herniation

    Decorticate posturing (figure top) is recognized as bilateral flexion at the elbows and wrists, shoulder adduction and extension of the lower extremities occurring with lesions[] The result is usually fatal. [9] Other symptoms of this type of herniation include small, fixed pupils with [10] paralysis of upward eye movement giving the characteristic[] Hyperventilation or Cheyne-Stokes Absent (eyes fixed) Decerebrate posturing, or nothing Lower pons and medilla Both pupils fixed and unreactive Apnoea Absent (eyes fixed)[]

  • Brain Death

    Criteria for establishing brain death (BD) require absence of all brainstem-mediated reflexes including motor (ie, decerebrate or decorticate) posturing.[] A 28-year-old man was admitted following a road traffic accident with a Glasgow Coma Score (GCS) of 3/15 and fixed pupils.[] Components of a complete neurological examination are: Examination of the patient-absence of spontaneous movement, decerebrate or decorticate posturing, seizures, shivering[]

  • Bacterial Meningitis

    posturing Bilaterally dilated and fixed pupils Loss of vestibulo-ocular reflexes (tested by calorie stimulation or Doll's eye maneuver) Loss of deep tendon reflexes Isoelectric[] The pupils may be unequal and react sluggishly; they may even become dilated and fixed as the disease progresses. Squint and diplopia with ptosis are common.[] […] false-localizing sign in 20% of cases) Cortical blindness (rare) Coma Irregular respiration (Cheyne- Stokes, central neurogenic hyperventilation) Unilateral or bilateral decorticate[]

  • Coma

    A decorticate posturing indicates a lesion (a point of damage) at or above the red nucleus , whereas a decerebrate posturing indicates a lesion at or below the red nucleus[] A 70-year-old man with coma (Glasgow Coma Scale score of 6) with fixed dilated pupils because of severe intracranial hypotension is described.[] […] dilated pupil, and brainstem signs, who had emergency DC, is presented.[]

  • Metabolic Encephalopathy

    posturing. • Respiratory patterns, along with blood gas (acid-base balance) testing can narrow the differential diagnosis considerably.[] […] results in mid- to large-sized sluggish or fixed pupils [ 2 ].[] Decorticate and decerebrate reflex posturings with noxious stimulation are commonly seen with progressive metabolic suppression of any type.[]

  • Dysautonomia

    posturing.[] pupils, excessive sweating, loss of pain and temperature sensation, and absent reflexes; pathologic features include reduced numbers of small diameter peripheral nerve fibers[] Features of the syndrome include severe, paroxysmal increases in heart rate, respiratory rate, temperature, and blood pressure, with decerebrate or decorticate posturing,[]

  • Hematoma

    Decorticate and decerebrate posturing or lack of any motor function should also be recorded. Assess the size and reactivity of both pupils.[] Some of the above may occur later in the clinical course; for instance, coma with a dilated fixed pupil usually indicates unilateral transtentorial herniation.[]

  • Reye Syndrome

    […] and decerebrate posturing Seizures Flaccidity Fixed dilated pupils Respiratory arrest Focal neurologic findings usually are not present.[] , large pupils, and loss of corneal reflexes Brainstem dysfunction Minimal liver dysfunction Manifestations of Stage 5 Hypotonia Seizures Respiratory arrest Absence of liver[] There is decorticate (flexor) posturing with intact pupillary light reflexes. . . . . .[]

  • Encephalopathy

    posturing. • Respiratory patterns, along with blood gas (acid-base balance) testing can narrow the differential diagnosis considerably.[] Involvement of the midbrain (midposition and fixed pupils) would have occurred as part of the rostrocaudal process with the exception of the rare intraventricular hemorrhage[] […] and decerebrate posturing, muscle spasticity, and bilateral extensor plantar reflexes.[]

  • Basilar Skull Fracture

    posturing (abnormal flexion) Responds to pain with decorticate posturing (abnormal flexion) 3 Responds to pain with decerebrate posturing (abnormal extension) Responds to[] (midbrain) -decerebrate posturing; fixed pupils (pons) Fixed pupils, flaccid (medulla) Intracranial Pressure (ICP) -3 Components: -Brain Tissue -Blood -CSF -Normal ICP 5-[] […] or flexor posturing (3 points); decerebrate or extensor posturing (2 points); none (1 point).[]

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