KROK 1 2014 – Question 74 · KROK (Medicine) · Physiology
A 16-year-old female patient has fainted after quickly changing her body position from horizontal to vertical one. Which process from the ones listed below has caused the loss of consciousness in the first place?
- A. Increasing central venous pressure
- B. Decreasing venous return
- C. Decreasing oncotic pressure of blood plasma
- D. Increasing arterial pressure
- E. Increasing venous return
Hint
Follow the chain from the sudden change of posture: where does gravity shift the blood, and how does that alter cardiac filling, output and brain perfusion?
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