KROK 1 2011 – Question 74 · KROK (Medicine) · Pathophysiology
A patient with coronary disease has been diagnosed with myocardial hypertrophy, tachycardia and a decrease in minute blood volume. What is the leading mechanism of cardiac hystiocyte damage in this case?
- A. Damage of specific membrane pumps
- B. Increase in α and β adrenoreceptors quantity
- C. Mg2+ loss by cardiac hystiocytes
- D. Cardiac hystiocyte dehydration
- E. Ca2+ loss by cardiac hystiocytes
Hint
Coronary disease starves the myocardium of oxygen and energy; think about which energy-dependent transport systems at the myocyte surface fail first, and how ion gradients and calcium and water movement then change.
The answer, the explanation and a note on every option are available once you log in. The account is free: topic tests, a mock exam, mistake review and statistics.
More questions on Pathophysiology
- A newborn child with pylorostenosis has often repeating vomiting accompanied by apathy, weakness, hypertonicity, sometimes convulsions. What…
- A 49-year old female patient has limitation of left limbs arbitrary movements. Muscular tonus of left hand and leg is overstrained and spasmodic…
- A patient is 44 years old. Laboratory examination of his blood revealed that content of proteins in plasma was 40 g/l. What influence will be…
- The patient with complaints of permanent thirst applied to the doctor. Hyperglycemia, polyuria and increased concentration of 17-ketosteroids in the…
- An infant has pylorospasm, weakness, hypodynamia, convulsions as a result of frequent vomiting. What kind of acid-base disbalance is it?
- A 19-year-old female patient has had low haemoglobin rate of 90-95 g/l since childhood. Blood count results obtained after hospitalisation are as…