Medical Knowledge Pathophysiology 2

Question 1

What characterizes chronic obstructive pulmonary disease (COPD)?

Accepted Answer

Progressive irreversible airflow limitation

Answer

COPD involves progressive, irreversible airflow limitation due to chronic airway inflammation and alveolar destruction (emphysema).

Question 2

Which condition involves autoimmune demyelination in the central nervous system?

Accepted Answer

Multiple sclerosis

Answer

Multiple sclerosis causes demyelination of CNS axons, disrupting nerve signal conduction and producing varied neurological deficits.

Question 3

What is the primary cause of most peptic ulcers in the US?

Accepted Answer

H. pylori infection and NSAID use

Answer

The majority of peptic ulcers result from H. pylori infection or NSAID-induced disruption of the protective gastric mucosal barrier.

Question 4

What distinguishes ischemic stroke from hemorrhagic stroke?

Accepted Answer

Ischemic results from vessel blockage; hemorrhagic from vessel rupture

Answer

Ischemic stroke results from arterial occlusion causing brain infarction, while hemorrhagic stroke results from rupture of a blood vessel.

Question 5

What defines congestive heart failure (CHF)?

Accepted Answer

Heart's inability to pump sufficient blood to meet metabolic demands

Answer

CHF occurs when the heart cannot maintain adequate cardiac output, causing fluid congestion in the lungs and peripheral tissues.

Medical Knowledge Practice Test