07b_Stroke and Seizure Disorders Flashcards
Cerebrovascular Accident (“stroke”)
Overview
Sudden or gradual onset of neurological symptoms
Caused by disruption of blood supply to the brain
Cerebrovascular Accident (CVA):
Three Major Causes
Thrombosis
Embolism
Hemorrhage
Cerebrovascular Accident (CVA):
Major risk factors
Hypertension
Artherosclerosis
Cerebrovascular Accident (CVA):
Common Symptoms
Contralateral Hemiplegia (paralysis)
Contralateral Hemianesthesia (loss of sensation)
Contralateral Visual Field Loss
Cerebrovascular Accident (CVA):
Dominant (left) hemisphere damage
Aphasia
Ideomotor Apraxia
Cerebrovascular Accident (CVA):
Nondominant (right) Hemisphere Damage
Contralateral Neglect
Dressing Apraxia
Cerebrovascular Accident (CVA):
Most Common Psychiatric Symptom
Depression = 40% of patients
*Depressive symptoms may not occur until several months later
Cerebrovascular Accident (CVA):
Neuropsychiatric symptoms
Depression, Apathy, Anxiety
Pathological crying or laughter
Mania
Psychosis
Dementia
Seizure Disorders (Epilepsy):
Abnormal electrical activity in the brain causes…
Aura that signals onset of seizure
Loss of consciousness
Abnormal movements
Seizure Disorders:
Two basic types of seizures
Generalized
Partial
Seizure Disorders:
Two types of Generalized seizures
Tonic-clonic (grand mal)
Absence (petit mal)
Tonic-clonic (grand mal) Seizure:
Tonic stage
Muscles contract and the body stiffens
Tonic-clonic (grand mal) Seizure:
Clonic stage
Rhythmic shaking of the limbs
Tonic-clonic (grand mal) Seizure:
Post-seizure
Depression
Confusion
Amnesia of the seizure event
Absence (petit mal) seizure:
Overview
Brief attacks
Loss of consciousness without prominent motor symptoms
Absence (petit mal) seizure:
Characteristic facial expression
Blank stare with frequent eye blinking
Simple vs Complex Partial Seizures
Simple = No loss of consciousness
Complex = Alteration in Consciousness
Simple Partial Seizures:
Most Common Cause
Temporal Lobe Epilepsy
Seizure Disorders:
Temporal Lobe Symptoms
Automatisms
Hallucinations
Alteration of emotion
Déjà vu
Changes in personality
Hypo-or hypersexuality
ANS arousal
Seizure Disorders:
Automatisms
Lipsmacking
Chewing
Stereotyped swimming movements
Seizure Disorders:
Frontal Lobe Symptoms
Motor symptoms (jerky movements)
Speech disturbances
Olfactory hallucinations
Autonomic symptoms
Seizure Disorders:
Parietal Lobe Symptoms
Unusual contralateral physical sensations such as:
Numbing, tingling, burning
Seizure Disorders:
Occipital Lobe Symptoms
Rapid eye blinking
Unusual visual phenomena
- flashing lights
- balls of light
- strange colors in visual field