Match List I with List II and select the correct answer using the code given below the Lists: List I (Phase of jugular venous pulse) List II (Mechanism) A. 'y' descent 1. Emptying of the blood from right atrium into right ventricle B. 'x' descent 2. Atrial relaxation C. 'v' wave 3. Filling of the right atrium from the vena cava D. 'a' wave 4. Onset of atrial systole
This question requires matching the phases of the jugular venous pulse (JVP) waveform with their corresponding cardiac mechanisms. The JVP provides essential information about right atrial pressure dynamics during the cardiac cycle.
The correct matching between the jugular venous pulse phases and their mechanisms, as determined by the provided answer, is:
| JVP Phase (List I) | Mechanism (List II) |
|---|---|
| A. 'y' descent | 4. Onset of atrial systole |
| B. 'x' descent | 3. Filling of the right atrium from the vena cava |
| C. 'v' wave | 2. Atrial relaxation |
| D. 'a' wave | 1. Emptying of the blood from right atrium into right ventricle |
The established pairings for this question are:
This selection corresponds to Option A (the first option listed).
High output cardiac failure is caused by which of the following diseases ?
1. Beri-beri
2. Severe anaemia
3. Thyrotoxicosis
Select the correct answer using the code given below: