"Septal deviation" redirects here. For the malformation of the nose, see Nasal septum deviation.
Midline shift (arrow) is present in this brain after a stroke (infarct depicted in shaded area).
Midline shift is a shift of the brain past its center line.[1] The sign may be evident on neuroimaging such as CT scanning.[1] The sign is considered ominous because it is commonly associated with a distortion of the brain stem that can cause serious dysfunction evidenced by abnormal posturing and failure of the pupils to constrict in response to light.[1] Midline shift is often associated with high intracranial pressure (ICP), which can be deadly.[1] In fact, midline shift is a measure of ICP; presence of the former is an indication of the latter.[2] Presence of midline shift is an indication for neurosurgeons to take measures to monitor and control ICP.[1] Immediate surgery may be indicated when there is a midline shift of over 5 mm.[3][4] The sign can be caused by conditions including traumatic brain injury,[1] stroke, hematoma, or birth deformity that leads to a raised intracranial pressure.
^ abcdefGruen P (May 2002). "Surgical management of head trauma". Neuroimaging Clinics of North America. 12 (2): 339–43. doi:10.1016/S1052-5149(02)00013-8. PMID 12391640.
^Maas AI, Stocchetti N, Bullock R (August 2008). "Moderate and severe traumatic brain injury in adults". Lancet Neurology. 7 (8): 728–41. doi:10.1016/S1474-4422(08)70164-9. PMID 18635021. S2CID 14071224.
^Cite error: The named reference Tu2 was invoked but never defined (see the help page).
^Valadka AB (2004). "Injury to the cranium". In Moore EJ, Feliciano DV, Mattox KL (eds.). Trauma. New York: McGraw-Hill, Medical Pub. Division. p. 389. ISBN 0-07-137069-2. Retrieved 2008-08-15.
Midlineshift is a shift of the brain past its center line. The sign may be evident on neuroimaging such as CT scanning. The sign is considered ominous...
woman. The grey area in the top right is organizing hematoma, causing midlineshift and compression of the ventricle. Non-contrast CT scan of a traumatic...
haemorrhage Subdural hematoma as marked by the arrow with significant midlineshift Specialty Neurosurgery, Neurology Causes Head injury, alcoholism, reduction...
deviation, or movement of the trachea away from its midline position can be used as a sign of a shift. Other structures, like the heart, can also be used...
individual's mandibular teeth are shifted over to the left in a mesial-distal dimension, by 2 mm, for example, that individual's midline would be said to be deviated...
published a study that found that intracerebral hemorrhage volume and shift of midline structures correlate with NPi, and abnormalities in NPi can be predicted...
lesions such as contusions or hematomas causing a significant mass effect (shift of intracranial structures) are considered emergencies and are removed surgically...
longer right posterior horns. A severe asymmetry, or an asymmetry with midlineshift or diffuse enlargement, may indicate brain injury early in life, particularly...
Hemimandibular elongation - Chin deviation towards contralateral side - Midlineshift towards contralateral side - Posterior crossbite on contralateral side...
the peritoneal cavity). The test is performed by first percussing the midline of the abdomen to elicit a resonant note due to gas in the abdomen. If...
spacing Unilateral or bilateral premature loss of deciduous canines with midlineshift Malpositioned or impacted lateral incisors that erupt palatally out...
nontraumatic epidural hematoma in a young woman. The grey area in the top left is organising hematoma, causing midlineshift and compression of the ventricle....
affected by structural changes to the brain such as brain swelling or midlineshift. IPMs can be placed not only in the parenchyma but also in the ventricular...
down on the midline of the abdomen. The examiner then taps one flank, while feeling on the other flank for the tap. The pressure on the midline prevents...
darker towards the edges. They are about two scales wide or less at the midline of the back, but expand to a width of 6–10 scales on the sides of the body...
by lesions of the cerebellar hemispheres. Truncal ataxia is caused by midline damage to the cerebellar vermis. There are at least 34 conditions that...
When one shifts the gaze horizontally, one eye will move laterally (toward the side) and the other will move medially (toward the midline). This may...
symmetrical cone. In typical cases, there is a symmetrical depression near the midline (such as the crater of a volcano), due to intact bridging veins. Its occurrence...
a motion that pulls a structure or part towards the midline of the body, or towards the midline of a limb, carried out by one or more adductor muscles...
their midline with a neon bulb and found that they tended to point it straight ahead but position it rightward of their true midline. This shift may account...
visual fields, with the latter receiving inputs from areas located in the midline cortex and retrosplenial region. A standard view is that V1 provides the...
the thighs apart. Hip adduction occurs when the femur moves back to the midline. Many muscles contribute to these movements: The psoas is the primary hip...
Movement usually switches from one side to the other but doesn't cross the midline. In the Basic Neurocellular Patterns this relates to homolateral movement...
the internal carotid: internal carotid the supratrochlear artery to the midline forehead. The supratrochlear artery is a branch of the ophthalmic branch...
Global Information