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The Diagnosis of Thalamic Stroke - Oren Zarif - Thalamic Stroke


A thalamic stroke is a type of brain injury affecting the thalamus, which is an area that regulates movement. The affected area includes the striatum, which is part of the ventral nuclei of the thalamus. It is considered a negative regulator of the cortico-striato-pallido-thalamo-cortical loop. In addition, it receives input from the pedunculopontine nucleus, which affects the ventral nuclei of the thalamus. Its lesions result in increased thalamocortical drive and are associated with thalamic dystonia.

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A male patient with fluctuating consciousness and facial paresis, hemi-ataxia, and arterial hypertension was diagnosed with a right thalamic paramedian infarct. The causes of thalamic stroke are unclear, but they often involve small arteries in the posterior circulation. Clinical manifestations of thalamic lesions and connectional studies in monkeys support a diagnosis of thalamic stroke.

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The role of the MD in memory consolidation is becoming clearer. However, there is still a lot of work to do to define the role of the thalamic tract in memory and learning. Older models that attribute a critical role to the MD may need to be revised. Nevertheless, the findings of this study are encouraging and point to a more definitive understanding of how the brain works. This study also supports the importance of memory consolidation and recovery in patients with thalamic stroke.

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The diagnosis of thalamic stroke is important for identifying its causes and possible treatment. The main cause is a clot on a blood vessel. There are two types of thalamic strokes, namely ischemic and hemorrhagic. To diagnose this disease, doctors may order an MRI or CT scan of the brain. In some cases, blood samples may also be taken to check blood glucose levels and platelet counts.

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In addition to stroke symptoms, the thalamus also helps regulate sleep and wakefulness. It is responsible for relaying sensory and motor information to the cerebral cortex. Damage to the thalamic nuclei of the anterior lobe causes neurological disorders. The symptoms of thalamic stroke are characterized by cognitive impairment. At first, patients may experience a decrease in consciousness. This effect may persist for hours or days. Later, the patient may experience agitation, aggression, and confusion.

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Patients with suspected thalamic infarct should undergo MRI and DWI. The DWI is useful in determining underlying vascular pathologies. The images should be aligned with T1-weighted MRI data and segmented white matter. In some cases, neuropsychological deficits may be missed by the stroke physician. The lesion-overlap map should also be interpreted in light of the cumulative overlay of all the larger lesions in the thalamus.

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Patients with thalamic infarcts in the posterior choroidal arteries have varying clinical manifestations. In three patients with LGN infarcts, the patient presented with quadrantanopsia, impaired fast phase of the optic nerve response to the opposite side, and a mild aphasia. Infarcts in the medial posterior choroidal artery territory have been associated with hemisensory loss, memory deficits, and eye movement disorders.

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The most common causes of thalamic strokes include vascular syndromes of the brain and a vascular disorder in the thalamus. Fortunately, thalamic infarcts are rare but are not without risk. Prevention measures and treatment methods are essential. It is important to follow recommendations from your doctor to reduce your risk of a thalamic infarct and preserve your quality of life.

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Lesions of the thalamus cause language disturbances. Left thalamic lesions result in decreased verbal output, impaired fluency, and poor comprehension. A person may also display phonetic or semantic errors, which may result in impaired speech. Left thalamic aphasia is associated with acalculia. As such, a thalamic stroke can be a frightening and frustrating experience.

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Although more recognizable symptoms of left anterior ITS have been described, this subgroup of thalamic stroke patients may be missed in the prehospital setting. This could impact the number of patients who receive proper stroke treatment. In addition, there are currently no specific neuropsychological assessments for this subgroup of patients. To improve the identification of thalamic stroke, more research is needed to define and validate diagnostic instruments. It is essential to know that the clinical symptoms of ITS should be consistent and accurate, so that patients receiving treatment will have the same outcome.

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