stroke-clinical features and clinical management Flashcards
hemiplegia and hemiparesis
paralysis of 1 side of the body, Rt CVA= left hemiplegia, hemiparesis- slight weakness/ loss of function
clinical features of stroke
motor symptoms, sensory symptoms, speech symptoms, cognitive symtoms
motor pathways
motor information originates from motor cortex in frontal lobe, the main descending pathway is corticospinal tract, in the medulla 80% fibres cross, at the spinal cord, synapses with alpha motor neuron, the peripheral motor nerve/ lower motor neuron takes messages to neurons
motor symptoms
alterations in tonem low tone (flaccidity), high tone (spasticity), ataxia, weakness, asymmetry, loss of normal movement patterns- to make movements easier, loss of postural adjustment- loss of balance, compensation- to counterbalance
typical patterns- flexion pattern in upper limb
shoulder elevation and retraction, internal rotation and adduction, elbow flexion and pronation, wrist and finger flexion
typical patterns- extensor pattern in lower limb
hip retraction/ flexion and extension, knee extension,ankle plantarflexion and inversion
sensory pathways
sensory messages are initiated in sensory receptors, sensory messages are transferred to the spinal cord via sensory peripheral nerves- FON, they are transferred to the cortex via specific tracts, they synapse at the thalamus before going to cortex, the sensory messages are perceived in the sensory cortex in the front of parietal lobe
sensory symptoms- sensory impairment
impaired cutaneous sensation, stereognosis, proprioceptive impairment,
sensory symptoms-visual problems
visual field loss, homonymous hemianopia
speech symptoms- speech problems
dysphasia/ aphasia (complete lack of speech), global aphasia, dysarthria
speech symptoms- expressive dysphasia and receptive
damage to broca’s area, usually associated with Rt hemiplegia, lose ability to produce speech
receptive- damage to wernicke’s area in temporal lobe, lose ability to understand speech
what are cognitive problems related to
parietal lobe
cognitive problems- perceptual problems- agonisa
inability to recognise objects when using a specific sense, astereognosis- cant recognise objects without seeing it, visual agnosia- cant recognise what an object is ,auditory agnosia- patients dont recognise peoples voices, can be dangerous- dont recognise alarms- safety issues
cognitive problems- other
depth perception- driving?, apraxia- put things out of order, anosognosia- not recognising you’ve had a stroke
cognitive problems- inattention/ neglect
more common with left hemiplegia, patients fails to attend stimuli from left side, poor prognosis if persist, results in many functional problems- self care, eating, dressing, walking