AANPCB AANPCB Pathophysiology 1

Question 1

Which pathophysiological mechanism is primarily responsible for the development of type 2 diabetes mellitus?

Accepted Answer

Insulin resistance with relative insulin deficiency

Answer

Type 2 diabetes results from peripheral insulin resistance combined with progressive beta-cell dysfunction leading to relative insulin deficiency.

Question 2

In heart failure with reduced ejection fraction (HFrEF), which compensatory mechanism initially maintains cardiac output but ultimately worsens the condition?

Accepted Answer

Activation of the renin-angiotensin-aldosterone system (RAAS)

Answer

RAAS activation causes sodium and water retention increasing preload and afterload, which provides short-term compensation but leads to long-term cardiac remodeling and deterioration.

Question 3

Which pathophysiological change underlies the development of hypertension in patients with chronic kidney disease (CKD)?

Accepted Answer

Sodium and water retention due to reduced GFR

Answer

Reduced glomerular filtration rate in CKD impairs sodium and water excretion, leading to volume expansion and elevated blood pressure.

Question 4

What is the primary pathophysiological mechanism in asthma that leads to airflow obstruction?

Accepted Answer

Bronchospasm, mucosal edema, and mucus hypersecretion

Answer

Asthma is characterized by reversible airflow obstruction caused by bronchospasm, airway inflammation with mucosal edema, and excessive mucus production.

Question 5

In atherosclerosis, which event initiates plaque formation in arterial walls?

Accepted Answer

Endothelial injury and LDL oxidation in the intima

Answer

Atherosclerosis begins with endothelial dysfunction and oxidized LDL accumulation in the arterial intima, triggering an inflammatory cascade that leads to plaque development.

AANPCB - American Academy of Nurse Practitioners Certification Board Practice Test

AANPCB - American Academy of Nurse Practitioners Certification Board Practice Test

AANPCB AANPCB Pathophysiology 1