CEREBROVASCULAR ACCIDENT

Question 1

What is the main cause of CVA? (1)

Answer 1

Thrombotic Stroke

 The blockage of an artery in the brain by a clot (thrombosis) is the most common cause of a stroke.

Question 2

What is the cause of cerebrovascular perfusion? (1)

Answer 2

 Cerebral perfusion pressure, net pressure gradient between blood and brain perfusion

Question 3

23/F, radiographer, self-referred to your clinic to ask for extraction of wisdom teeth.
History: pain at wisdom teeth region for several times
Pan: 18, 28 vertical, fully erupted, 38 horizontal impaction, 48 horizontal/mesio angular impaction

a. More than 80% CVA is caused by what? Name one of the three factors causing this. (2)

Answer 3

 Cerebrovascular accident / stroke, 83% due to ischemic stroke
 By obstruction of artery supplying the brain like atherosclerosis, fatty plaque deposition on vessel wall
 Life style behavioural (high cholesterol diet, insufficient exercises) / medical (DM) / other factors
(aging), hypercholesterolemia, hypertension, atrial fibrillation, smoking, previous experience, atherosclerosis

Question 4

4. Hypertension. C/O: pain on the lower jaw and continued for a period of time and ceased. But recently pain experienced again and patient cannot fall asleep. Panoramic radiograph is provided. (Formative, 2011)
   a. What is the cause of over 80% of CVA? Can you name 1 of the three key factors? [2]

Answer 4

Cerebrovascular accident / stroke, 83% due to ischemic stroke
 By obstruction of artery supplying the brain like atherosclerosis, fatty plaque deposition on vessel wall
 Life style behavioural (high cholesterol diet, insufficient exercises) / medical (DM) / other factors
(aging), hypercholesterolemia, hypertension, atrial fibrillation, smoking, previous experience, atherosclerosis