[MCQ] Cerebrovascular Diseases Ischemic stroke- Part 1

I. Start the exam by click the “Start” button

Cerebrovascular Diseases Ischemic stroke- Part 1

Please wait while the activity loads.
If this activity does not load, try refreshing your browser. Also, this page requires javascript. Please visit using a browser with javascript enabled.

If loading fails, click here to try again

Start

Congratulations - you have completed Cerebrovascular Diseases Ischemic stroke- Part 1. You scored %%SCORE%% out of %%TOTAL%%. Your performance has been rated as %%RATING%%

Your answers are highlighted below.

Question 1

By definition, neurologic signs and symptoms of TIA last for less than ?

A	< 1 hour
B	< 6 hours
C	< 12 hours
D	< 24 hours

Question 1 Explanation:

Typically the neurologic signs and symptoms of a TIA last for 5 to 15 minutes but, by definition, must last for <24 hours. Newly proposed definition classifies those with new brain infarction as ischemic strokes regardless of whether symptoms persist.

Question 2

Focal brain ischemia or infarction is usually caused by ?

A	Thrombosis of cerebral vessels
B	Emboli from a proximal arterial source
C	Emboli from the heart
D	All of the above

Question 2 Explanation:

Focal brain ischemia or infarction is caused by thrombosis of cerebral vessels or by emboli from a proximal arterial source or heart.

Question 3

The average duration of a TIA is ?

A	~ 1 minute
B	~ 12 minutes
C	~ 35 minutes
D	~ 56 minutes

Question 3 Explanation:

The average duration of a TIA is ~12 minutes.

Question 4

Brain infarction occurs in what percentage of of TIAs even when neurologic signs and symptoms are absent ?

A	1 - 5 %
B	3 - 20 %
C	10 - 20 %
D	15 - 50 %

Question 4 Explanation:

Even in absence of neurologic signs & symptoms, infarcts of brain occur in 15 - 50% of TIAs.

Question 5

In the first 3 months after TIA, risk of stroke is ?

A	~ 10 - 15 %
B	~ 20 - 35 %
C	~ 40 - 60 %
D	~ 60 - 85 %

Question 5 Explanation:

Risk of stroke after TIA is ~10 - 15% in first 3 months, with most events occurring in first 2 days.

Question 6

Which of the following estimates risk of stroke following TIA ?

A	ABCD Score
B	SAPS II Score
C	IPI score
D	Modified Child-Pugh classification

Question 6 Explanation:

APACHE (acute physiology and chronic health evaluation) system and SAPS (simplified acute physiology score) system are severity-of-illness (SOI) scoring systems. International Prognostic Index (IPI) is for NHL. Modified Child-Pugh classification is a staging system for cirrhosis

Question 7

Which of the following is not a part of ABCD Scoring system for TIA ?

A	Age
B	Sex
C	Hypertension
D	Diabetes

Question 7 Explanation:

ABCD Scoring system for TIA includes age, blood pressure (SBP & DBP), clinical symptoms (unilateral weakness, speech disturbance without weakness), duration and diabetes.

Question 8

Amaurosis Fugax is best related to ?

A	Cluster headache
B	Transient ischemic attack of retina
C	Hysterical conversion reaction
D	All of the above

Question 8 Explanation:

Amaurosis fugax or a transient ischemic attack of the retina or transient monocular blindness, occurs from emboli to central retinal artery of one eye indicating carotid stenosis or local ophthalmic artery disease as the cause.

Question 9

Amaurosis Fugax is the result of ?

A	Trauma
B	Emboli
C	Vascular spasm
D	Any of the above

Question 9 Explanation:

Amaurosis fugax usually results from an embolus stuck in a retinal arteriole. Complete occlusion of the central retinal artery produces arrest of blood flow and a milky retina with a cherry-red fovea.

Question 10

Emboli causing amaurosis fugax are composed of ?

A	Cholesterol
B	Calcium
C	Platelet-fibrin debris
D	Any of the above

Question 10 Explanation:

Emboli causing amaurosis fugax are composed of cholesterol (Hollenhorst plaque), calcium, or platelet-fibrin debris. Most common source is atherosclerotic plaque in carotid artery or aorta.

Question 11

Which of the following statements about amaurosis fugax is false ?

A	Briefer duration than migraine
B	Occurs in both eyes
C	Not followed by headache
D	Associated with antiphospholipid antibody syndrome

Question 11 Explanation:

Amaurosis fugax occurs in only one eye (painless monocular loss of vision). It can be a part of high-altitude neurologic events

Question 12

Most neurologic events occur within what duration after a TIA ?

A	First 2 days
B	First 7 days
C	First 15 days
D	First 30 days

Question 12 Explanation:

Most neurologic events occur in first 2 days after TIA. Risk of stroke is ~10% in first 3 months.

Question 13

Conditions that may mimic stroke include ?

A	Hypoglycemia
B	Hypertensive encephalopathy
C	Migraine
D	All of the above

Question 13 Explanation:

Conditions that may mimic stroke include hypoglycemia, seizures, brain tumor, hypertensive encephalopathy, migraine & metabolic encephalopathy.

Question 14

A fall in cerebral blood flow to zero causes death of brain tissue within ?

A	30 seconds to 1 minute
B	1 to 4 minutes
C	4 to 10 minutes
D	10 to 15 minutes

Question 14 Explanation:

A fall in cerebral blood flow to zero causes death of brain tissue within 4 to 10 minutes.

Question 15

When cerebral blood flow falls to <16 to 18 mL/100 gram per minute, how long would it take for brain infarction ?

A	1 hour
B	2 hour
C	3 hour
D	4 hour

Question 15 Explanation:

When cerebral blood flow falls to <16 - 18 mL/100 gram/minute, brain infarction occurs in 1 hour

Question 16

Which of the following is false about ischemic penumbra ?

A	Ischemic tissue around core region of infarction
B	Reversibly dysfunctional
C	Imaged by perfusion-diffusion imaging with MRI
D	None of the above

Question 16 Explanation:

In ischemic penumbra, cellular death occurs by apoptosis days to weeks later. Saving the ischemic penumbra is the goal of revascularization therapies.

Question 17

In MRI, which of the following is a measure of ischemic penumbra ?

A	Perfusion defect
B	Diffusion deficit
C	Diffusion-perfusion mismatch
D	All of the above

Question 17 Explanation:

The discrepancy between the region of poor perfusion and diffusion deficit is called diffusionperfusion mismatch and is a measure of ischemic penumbra.

Question 18

Which of the following favour the diagnosis of cerebral hemorrhage rather than ischemia ?

A	Lower initial blood pressure
B	Higher initial blood pressure
C	Fluctuating blood pressure
D	Any of the above

Question 18 Explanation:

A more depressed level of consciousness, higher initial blood pressure, or worsening of symptoms after onset favor hemorrhage, and a deficit that remits suggests ischemia.

Question 19

“Ischemic penumbra” is located at ?

A	Center of the core region of infarction
B	Within the core region of infarction
C	Surrounding the core region of infarction
D	Any of the above

Question 19 Explanation:

Tissue surrounding the core region of infarction is ischemic but reversibly dysfunctional and is called as the ischemic penumbra.

Question 20

If no improvement in cerebral flow occurs, what will happen to ischemic penumbra ?

A	Will improve
B	Will infarct
C	Will continue to remain the same
D	Any of the above

Question 20 Explanation:

The ischemic penumbra will eventually infarct if no change in flow occurs. 407 In ischemic penumbra, mechanism of cell death is ?

Question 21

In ischemic penumbra, mechanism of cell death is ?

A	Apoptosis
B	Necrotic
C	Mechanical
D	Toxicity due to free radicals

Question 21 Explanation:

In Ischemic penumbra, apoptotic cellular death occurs days to weeks later

Question 22

Events that can cause “secondary brain insults” include all except ?

A	Systemic hypertension
B	Hypoxia
C	Seizures
D	Hyperglycemia

Question 22 Explanation:

Systemic hypotension & hypoxia reduce substrate delivery to vulnerable brain tissue. Fever, seizures & hyperglycemia can increase cellular metabolism. Clinically these events are known as secondary brain insults because they lead to exacerbation of the primary brain injury.

Question 23

BP should not be lowered acutely in acute ischemic stroke becaue it affects blood flow in ?

A	Cerebral arteries
B	Cerebral veins
C	Collateral channels
D	All of the above

Question 23 Explanation:

Because collateral blood flow within the ischemic brain is blood pressure dependent, blood pressure should not be lowered acutely.

Question 24

In acute ischemic stroke, BP should be lowered if it is ?

A	> 140 / 90 mm Hg
B	> 150 / 100 mm Hg
C	> 165 / 110 mm Hg
D	> 185 / 110 mm Hg

Question 24 Explanation:

In acute ischemic stroke, BP should be lowered if there is malignant hypertension, concomitant myocardial ischemia or if BP is >185/110 mm Hg or if thrombolytic therapy is anticipated.

Once you are finished, click the button below. Any items you have not completed will be marked incorrect. Get Results

There are 24 questions to complete.

←

List

→

Return

Shaded items are complete.

1	2	3	4	5
6	7	8	9	10
11	12	13	14	15
16	17	18	19	20
21	22	23	24	End

Return

See all quizzes of Cerebrovascular Diseases Ischemic stroke at here:

Cerebrovascular Diseases Ischemic stroke- Part 1| Cerebrovascular Diseases Ischemic stroke- Part 2| Cerebrovascular Diseases Ischemic stroke- Part 3|Cerebrovascular Diseases Ischemic stroke- Part 4|Cerebrovascular Diseases Ischemic stroke- Part 5| Cerebrovascular Diseases Ischemic stroke- Part 6| Cerebrovascular Diseases Ischemic stroke- Part 7|Cerebrovascular Diseases Ischemic stroke- Part 8

1 By definition, neurologic signs and symptoms of TIA last for less
than ?
A. < 1 hour
B. < 6 hours
C. < 12 hours
D. < 24 hours

2 Focal brain ischemia or infarction is usually caused by ?
A. Thrombosis of cerebral vessels
B. Emboli from a proximal arterial source
C. Emboli from the heart
D. All of the above

3 The average duration of a TIA is ?
A. ~ 1 minute
B. ~ 12 minutes
C. ~ 35 minutes
D. ~ 56 minutes

4 Brain infarction occurs in what percentage of of TIAs even when
neurologic signs and symptoms are absent ?
A. 1 – 5 %
B. 3 – 20 %
C. 10 – 20 %
D. 15 – 50 %

5 In the first 3 months after TIA, risk of stroke is ?
Harrison’s 18th Ed. 3280
A. ~ 10 – 15 %
B. ~ 20 – 35 %
C. ~ 40 – 60 %
D. ~ 60 – 85 %

6 Which of the following estimates risk of stroke following TIA ?
A. ABCD Score
B. SAPS II Score
C. IPI score
D. Modified Child-Pugh classification

7 Which of the following is not a part of ABCD Scoring system for
TIA ?
A. Age
B. Sex
C. Hypertension
D. Diabetes

8 Amaurosis Fugax is best related to ?
A. Cluster headache
B. Transient ischemic attack of retina
C. Hysterical conversion reaction
D. All of the above

9 Amaurosis Fugax is the result of ?
A. Trauma
B. Emboli
C. Vascular spasm
D. Any of the above

10 Emboli causing amaurosis fugax are composed of ?
A. Cholesterol
B. Calcium
C. Platelet-fibrin debris
D. Any of the above

11 Which of the following statements about amaurosis fugax is false ?
A. Briefer duration than migraine
B. Occurs in both eyes
C. Not followed by headache
D. Associated with antiphospholipid antibody syndrome

12 Most neurologic events occur within what duration after a TIA ?
A. First 2 days
B. First 7 days
C. First 15 days
D. First 30 days

13 Conditions that may mimic stroke include ?
A. Hypoglycemia
B. Hypertensive encephalopathy
C. Migraine
D. All of the above

14 A fall in cerebral blood flow to zero causes death of brain tissue
within ?
A. 30 seconds to 1 minute
B. 1 to 4 minutes
C. 4 to 10 minutes
D. 10 to 15 minutes

15 When cerebral blood flow falls to <16 to 18 mL/100 gram per
minute, how long would it take for brain infarction ?
A. 1 hour
B. 2 hour
C. 3 hour
D. 4 hour

16 Which of the following is false about ischemic penumbra ?
A. Ischemic tissue around core region of infarction
B. Reversibly dysfunctional
C. Imaged by perfusion-diffusion imaging with MRI
D. None of the above

17 In MRI, which of the following is a measure of ischemic penumbra ?
A. Perfusion defect
B. Diffusion deficit
C. Diffusion-perfusion mismatch
D. All of the above

18 Which of the following favour the diagnosis of cerebral
hemorrhage rather than ischemia ?
A. Lower initial blood pressure
B. Higher initial blood pressure
C. Fluctuating blood pressure
D. Any of the above

19 “Ischemic penumbra” is located at ?
A. Center of the core region of infarction
B. Within the core region of infarction
C. Surrounding the core region of infarction
D. Any of the above

20 If no improvement in cerebral flow occurs, what will happen to
ischemic penumbra ?
A. Will improve
B. Will infarct
C. Will continue to remain the same
D. Any of the above

21 In ischemic penumbra, mechanism of cell death is ?
A. Apoptosis
B. Necrotic
C. Mechanical
D. Toxicity due to free radicals

22 Events that can cause “secondary brain insults” include all except ?
A. Systemic hypertension
B. Hypoxia
C. Seizures
D. Hyperglycemia

23 BP should not be lowered acutely in acute ischemic stroke becaue
it affects blood flow in ?
A. Cerebral arteries
B. Cerebral veins
C. Collateral channels
D. All of the above

24 In acute ischemic stroke, BP should be lowered if it is ?
A. > 140 / 90 mm Hg
B. > 150 / 100 mm Hg
C. > 165 / 110 mm Hg
D. > 185 / 110 mm Hg

Cerebrovascular Diseases Ischemic stroke

[MCQ] Cerebrovascular Diseases Ischemic stroke- Part 1

I. Start the exam by click the “Start” button

Cerebrovascular Diseases Ischemic stroke- Part 1

Share this:

Related

[MCQ] Seizures and Epilepsy- Part 6

[MCQ] Cerebrovascular Diseases Ischemic stroke- Part 2

You may also like

Leave a Comment Cancel Reply