Q.67
Which among the followings can lead to chronic general passive hyperaemia?
(A) . Pneumothorax
(B) . Valvular stenosis
(C) . Myocardial infarction
(D) . Valvular insufficiency
Choose the correct answer from the options given below:
- Chronic Passive Hyperemia (Congestion):
- General passive hyperemia results from impaired systemic venous return to the heart:
- Valvular Stenosis: Narrowing of the atrioventricular (mitral/tricuspid) or semilunar valves impedes forward blood flow.
- Valvular Insufficiency: Incompetent valve closure leads to regurgitant backward blood flow.
- Both valvular lesions elevate upstream venous pressure, triggering chronic passive congestion in the lungs (left heart failure) or liver ("nutmeg liver") and systemic organs (right heart failure).
- nalysis:
- ((B) and (D) only): Correct.
Correct option: (3) (B) and (D) only.
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