Dataset Information

Ipsilateral Hemichorea-hemiballism in a Case of Postoperative Stroke.

ABSTRACT: Ipsilateral hemiballismus refers to the rare occurrence of hemiballism developing on the same side of a brain lesion.We describe a rare case of postoperative ipsilateral hemiballism in a patient who underwent pituitary adenoma resection and experienced a right internal cerebral artery territory infarct. We review the literature on hemichorea hemiballismus (HCHB) and explore various mechanisms for its occurrence.Only three cases of ipsilateral hemiballism have been described, and the exact pathophysiology remains unknown. A dominant left hemisphere with corpus callosal connections to the right basal ganglia is the most probable explanation for this unusual event.

SUBMITTER: Kannepalli NR

PROVIDER: S-EPMC4825330 | biostudies-other | 2016

REPOSITORIES: biostudies-other

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Ipsilateral Hemichorea-hemiballism in a Case of Postoperative Stroke.

Kannepalli Narasinga Rao V L NR Yadav Ravi R Vazhayil Vikas V Somanna Sampath S Pal Pramod Kumar PK

Tremor and other hyperkinetic movements (New York, N.Y.) 20160414

<h4>Background</h4>Ipsilateral hemiballismus refers to the rare occurrence of hemiballism developing on the same side of a brain lesion.<h4>Case report</h4>We describe a rare case of postoperative ipsilateral hemiballism in a patient who underwent pituitary adenoma resection and experienced a right internal cerebral artery territory infarct. We review the literature on hemichorea hemiballismus (HCHB) and explore various mechanisms for its occurrence.<h4>Discussion</h4>Only three cases of ipsilat ...[more]

PMID: 27127720

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Project description:BackgroundStroke rehabilitation may be improved with a better understanding of the contribution of ipsilateral motor pathways to the paretic limb and alterations in transcallosal inhibition. Few studies have evaluated these factors during dynamic, bilateral lower limb movements, and it is unclear whether they relate to functional outcomes.ObjectiveDetermine if lower limb ipsilateral excitability and transcallosal inhibition after stroke depend on target limb, task, or number of limbs involved, and whether these factors are related to clinical measures.MethodsIn 29 individuals with stroke, ipsilateral and contralateral responses to transcranial magnetic stimulation were measured in the paretic and nonparetic tibialis anterior during dynamic (unilateral or bilateral ankle dorsiflexion/plantarflexion) and isometric (unilateral dorsiflexion) conditions. Relative ipsilateral excitability and transcallosal inhibition were assessed. Fugl-Meyer, ankle movement accuracy, and walking characteristics were assessed.ResultsRelative ipsilateral excitability was greater during dynamic than isometric conditions in the paretic limb (P ≤ .02) and greater in the paretic than the nonparetic limb during dynamic conditions (P ≤ .004). Transcallosal inhibition was greater in the ipsilesional than contralesional hemisphere (P = .002) and during dynamic than isometric conditions (P = .03). Greater ipsilesional transcallosal inhibition was correlated with better ankle movement accuracy (R2 = 0.18, P = .04). Greater contralateral excitability to the nonparetic limb was correlated with improved walking symmetry (R2 = 0.19, P = .03).ConclusionsIpsilateral pathways have increased excitability to the paretic limb, particularly during dynamic tasks. Transcallosal inhibition is greater in the ipsilesional than contralesional hemisphere and during dynamic than isometric tasks. Ipsilateral pathways and transcallosal inhibition may influence walking asymmetry and ankle movement accuracy.

Dataset Information

Ipsilateral Hemichorea-hemiballism in a Case of Postoperative Stroke.

Publications

Ipsilateral Hemichorea-hemiballism in a Case of Postoperative Stroke.

Similar Datasets

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