Jugular venous distention is most commonly associated with which cardiac condition?

• A. Left ventricular failure
• B. Pulmonary embolism
• C. Right ventricular failure
• D. Myocardial infarction

Answer: (C)

Jugular venous distention shows elevated pressure in the central venous system, reflecting how well the right side of the heart handles venous return. When the right ventricle fails, it can’t effectively move blood into the pulmonary circulation, so blood backs up into the right atrium and the systemic veins. That backing up increases the pressure in the jugular veins, making them visibly distended, especially when the head of the bed is elevated. This direct link between right-sided filling pressures and visible neck vein distention is why right ventricular failure is the most common cardiac condition associated with JVD.

Left ventricular failure raises pressures backing up into the lungs rather than the systemic veins, so JVD is not as prominent a feature. Pulmonary embolism can cause acute right-sided strain and may produce JVD, but it is not the typical, most common scenario. Myocardial infarction can involve the right ventricle, but the classic association remains right ventricular failure due to its direct impact on systemic venous pressure.