Essay A case of cerebrovascular accident

1435 Words Nov 11th, 2014 6 Pages
1. Define the terms ischemia and infarction. Ischemia- local decrease in blood supply Infarction- death & deterioration of tissue resulting from lack of blood supply.
2. What is a stroke? Name the two main types of strokes and describe the mechanism(s) by which each type occurs.
Cerebrovascular Accident- condition in which brain tissue is deprived of blood supply. The most common stroke symptoms are:
Numbness or weakness (paresis) of the face, arm, or leg, sometimes only on one side;
Confusion, trouble speaking or understanding speech (aphasia)
Trouble seeing
Trouble walking or dizziness; loss of balance or coordination (ataxia)
Severe headache with no known cause
1. Ischemic stroke (~83%) - blood vessel supplying brain
…show more content…
Contralateral refers to body functions associated with areas of the brain hemisphere on the opposite side (R body: L hemisphere).
8. Explain the significance of the findings of brisk deep tendon reflexes and Babinski sign on the affected side of Samuel’s body.
Deep Tendon Reflexes (DTRs, aka Stretch Reflexes) - are all ipsilateral and monosynaptic the fact that his are normal indicates that there is no peripheral nerve damage or spinal cord damage at the level tested.
Babinski- gently strokes the outer soles of the patient's feet with the mallet while checking to see whether or not the big toe extends out as a result. In children under the age of one and a half years, the big toe will extend out with or without the other toes. This is due to the fact that the fibers in the spinal cord and cerebral cortex have not been completely covered in myelin, the protein and lipid sheath that aids in processing neural signals. In adults and children over the age of one and a half years, the myelin sheath should be completely formed, and, as a result, all the toes will curl under (planter flexion reflex). An adult or older child who responds to the Babinski with an extended big toe may have a lesion in the spinal cord or cerebral cortex. Different responses on the two sides of the body may indicate unilateral cortical or spinal damage.
9. Based upon the historical and physical exam

Related Documents