Hemorrhagic Stroke in Emergency Medicine Clinical Presentation
- Author: David S Liebeskind, MD; Chief Editor: Rick Kulkarni, MD more...
History
Obtaining an adequate history includes the onset and progression of symptoms as well as an assessment for risk factors and possible causative events. These include previous transient ischemic attack (TIA) and stroke, hypertension, diabetes, smoking, arrhythmia and valvular disease, illicit drug use, and risk factors for thrombosis. History of trauma, even if minor, may be important, as extracranial arterial dissections can result in ischemic stroke.
Symptoms alone are not specific enough to distinguish ischemic from hemorrhagic infarction. However, generalized symptoms, including nausea, vomiting, and headache as well as an altered level of consciousness may indicate increased intracranial pressure and are more common with hemorrhagic strokes or large ischemic strokes. Seizures are more common in hemorrhagic stroke than in ischemic stroke and occur in up to 28% of hemorrhagic strokes, generally at the onset of the intracerebral hemorrhage or within the first 24 hours.
Other, more focal, symptoms of stroke include weakness or paresis that may affect a single extremity, one half of the body, or all 4 extremities; facial droop; monocular or binocular blindness; blurred vision or visual field deficits; dysarthria and trouble understanding speech; vertigo or ataxia; and aphasia. The neurologic deficits reflect the area of the brain typically involved, and stroke syndromes for specific vascular lesions have been described.
Symptoms of subarachnoid hemorrhage may include sudden onset of headache, signs of meningismus with nuchal rigidity, photophobia and pain with eye movements, nausea, and vomiting. The most common clinical scoring systems for grading aneurysmal subarachnoid hemorrhage are the Hunt and Hess grading scheme and the World Federation of Neurosurgeons (WFNS) grading scheme, which incorporates the Glasgow Coma Scale. The Fisher Scale incorporates findings from noncontrast CT (NCCT) scans.
Physical Examination
Intracerebral hemorrhage may be clinically indistinguishable from ischemic stroke. Hypertension is commonly a prominent finding. An acute onset of neurologic deficit, altered level of consciousness/mental status, or coma is more common with hemorrhagic stroke than with ischemic stroke. Often, this is due to an increase in intracranial pressure. Meningismus may result from blood in the ventricles.
Focal neurologic deficits
The type of deficit depends upon the area of brain involved. If the dominant hemisphere (usually the left) is involved, a syndrome consisting of right hemiparesis, right hemisensory loss, left gaze preference, right visual field cut, and aphasia may result. If the nondominant (usually the right) hemisphere is involved, a syndrome of left hemiparesis, left hemisensory loss, right gaze preference, and left visual field cut may result. Nondominant hemisphere syndrome may also result in neglect when the patient has left-sided hemi-inattention and ignores the left side. If the cerebellum is involved, the patient is at high risk of herniation and brainstem compression. Herniation may cause a rapid decrease in the level of consciousness, apnea, and death.
Specific brain sites and deficits involved in hemorrhagic stroke include the following:
- Putamen - Contralateral hemiparesis, contralateral sensory loss, contralateral conjugate gaze paresis, homonymous hemianopia, aphasia, neglect, or apraxia
- Thalamus - Contralateral sensory loss, contralateral hemiparesis, gaze paresis, homonymous hemianopia, miosis, aphasia, or confusion
- Lobar - Contralateral hemiparesis or sensory loss, contralateral conjugate gaze paresis, homonymous hemianopia, abulia, aphasia, neglect, or apraxia
- Caudate nucleus - Contralateral hemiparesis, contralateral conjugate gaze paresis, or confusion
- Brainstem - Quadriparesis, facial weakness, decreased level of consciousness, gaze paresis, ocular bobbing, miosis, or autonomic instability
- Cerebellum - Ataxia (usually beginning in the trunk), ipsilateral facial weakness, ipsilateral sensory loss, gaze paresis, skew deviation, miosis, or decreased level of consciousness
Other signs of cerebellar or brainstem involvement include the following:
- Gait or limb ataxia
- Vertigo or tinnitus
- Nausea and vomiting
- Hemiparesis or quadriparesis
- Hemisensory loss or sensory loss of all 4 limbs
- Eye movement abnormalities resulting in diplopia or nystagmus
- Oropharyngeal weakness or dysphagia
- Crossed signs (ipsilateral face and contralateral body)
Many other stroke syndromes are associated with intracerebral hemorrhage and range from mild headache to neurologic devastation. At times, a cerebral hemorrhage may present as a new-onset seizure.
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