Is this realistic to a B/B passage on the actual exam?

This came from Google Gemini, testing organ systems. I think it’s pretty damn hard but wanna get other opinions.

Passage 1

A 68-year-old male patient, Mr. H, presents to the emergency department with severe dyspnea (shortness of breath), orthopnea, and bilateral pitting edema in his lower extremities. His medical history is significant for a severe myocardial infarction (MI) affecting the left ventricle two years prior, and chronic essential hypertension. An echocardiogram reveals a significantly dilated left ventricle with a reduced ejection fraction (systolic dysfunction) and turbulent flow regurgitating back into the left atrium during ventricular contraction.

To manage his symptoms, physicians prescribe a combination therapy including an ACE inhibitor, a loop diuretic (which acts on the ascending loop of Henle to block Na+/K+/2Cl- symporters), and a low-dose beta-blocker to lower his heart rate. His mean arterial pressure (MAP) is currently 105 mmHg, and blood tests reveal a slight respiratory alkalosis alongside elevated renin levels.

2. Based on Mr. H's echocardiogram results and diagnosis, what is the most likely immediate hemodynamic consequence of his valvular abnormality during the systolic phase?

A) Increased continuity equation flow rate into the systemic circulation.

B) Increased hydrostatic pressure within the pulmonary veins and capillaries.

C) Decreased end-diastolic volume in the left ventricle during the subsequent cardiac cycle.

D) Increased forward flow through the aortic semilunar valve due to compensatory hypertrophy.

3. According to the simplified Starling Equation, how does the backward failure of Mr. H's left ventricle most directly contribute to his severe dyspnea?

A) It increases capillary oncotic pressure in the lungs, pulling fluid into the pulmonary interstitium.

B) It decreases capillary hydrostatic pressure in the systemic circuit, causing hypoxia.

C) It increases capillary hydrostatic pressure in the pulmonary circuit, favoring a positive Net Filtration Pressure (NFP) and pulmonary edema.

D) It decreases interstitial hydrostatic pressure in the alveoli, preventing surfactant function.

4. The physicians prescribed a loop diuretic targeting the thick ascending loop (TAL) of Henle. How does this medication ultimately help alleviate Mr. H's bilateral pitting edema?

A) By increasing the osmolarity of the renal medulla, it enhances ADH-mediated water reabsorption in the collecting duct.

B) By inhibiting sodium reabsorption in the TAL, it decreases the countercurrent multiplier effect, leading to increased water excretion.

C) By stimulating aldosterone release, it promotes sodium excretion and water retention in the distal convoluted tubule.

D) By opening aquaporins in the descending loop, it prevents water from entering the vasa recta.

5. How would the administration of the ACE inhibitor affect Mr. H's Renin-Angiotensin-Aldosterone System (RAAS)?

A) It would prevent the cleavage of angiotensinogen into Angiotensin I.

B) It would increase the synthesis of Angiotensin II, causing systemic vasodilation.

C) It would decrease the release of aldosterone, leading to decreased sodium reabsorption and lower blood volume.

D) It would directly inhibit the release of renin from the juxtaglomerular apparatus.

6. The blood tests indicate that Mr. H has elevated renin levels. Given his medication regimen and history, what is the most likely physiological trigger for this elevation?

A) The ACE inhibitor blocks negative feedback, and poor cardiac output reduces renal perfusion pressure.

B) The loop diuretic increases blood volume, which stimulates stretch receptors in the renal artery.

C) The right ventricle is failing, leading to increased venous return to the kidneys.

D) High levels of circulating Angiotensin II are directly stimulating the renal cortex.

7. Mr. H’s slight respiratory alkalosis is most likely a compensatory response to which of the following?

A) Hypoxia-driven hyperventilation due to impaired gas exchange at the fluid-filled alveoli.

B) Retention of bicarbonate ions by the kidneys due to the diuretic use.

C) Accumulation of carbon dioxide in the blood from poor peripheral perfusion.

D) A rightward shift of the oxygen-hemoglobin dissociation curve.