Paradoxical elevation of jugular venous pressure during inspiration and which occurs in patients with chronic constrictive pericarditis and Tricuspid Stenosis?

Appeared in: SCTIMST Staff Nurse - 2016

Explanation

Kussmaul's sign is defined as a paradoxical rise, or failure to fall, of the jugular venous pressure (JVP) during inspiration.
Normally, JVP decreases during inspiration because the negative pressure in the chest draws more blood into the heart, which a healthy right ventricle accommodates.
In conditions like constrictive pericarditis or tricuspid stenosis, the right ventricle is stiff or obstructed and cannot handle the increased venous return during inspiration.
This inability to accommodate the extra blood volume causes blood to back up into the venous system, leading to distention of the jugular veins and a rise in JVP.

Option B: Kernig's sign is a neurological sign used to assess for meningeal irritation, not a cardiovascular sign.
Option C: Homan's sign is related to the peripheral vascular system and is used as a (now considered unreliable) test for Deep Vein Thrombosis (DVT) in the leg.
Option D: Brudzinski's sign, like Kernig's sign, is a neurological sign used to check for meningeal irritation.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Assessment of Jugular Venous Pressure (JVP) and associated clinical signs as background academic context rather than a clinical decision trigger.
Recognizing Kussmaul's sign is a critical nursing assessment skill that points towards severe right-sided heart failure or restrictive physiology, requiring urgent medical evaluation.
Accurate JVP assessment helps differentiate causes of dyspnea and edema, guiding appropriate interventions and care planning.
What if? If the patient had signs of meningitis (fever, headache, stiff neck), the nurse would prioritize assessing for Kernig's and Brudzinski's signs, not Kussmaul's sign, as the suspected pathology would be neurological, not cardiac.

How to Approach the Question

First, identify the core clinical finding described in the question: a 'paradoxical elevation of jugular venous pressure during inspiration'.
Recognize that this specific description corresponds to a named clinical sign.
Systematically review the options provided.
Recall the definition of Kussmaul's sign, which directly matches the phenomenon described in the question.
Eliminate the other options by recalling their definitions: Kernig's and Brudzinski's signs are for meningeal irritation, and Homan's sign is for DVT.
Confirm the correct answer by noting that the associated conditions mentioned (constrictive pericarditis, tricuspid stenosis) are classic causes of Kussmaul's sign.

Concept Tested & Keywords

Concept Tested: Assessment of Jugular Venous Pressure (JVP) and associated clinical signs
Stem keywords: Jugular venous pressure, inspiration, constrictive pericarditis, Tricuspid Stenosis
Lead-in keywords: paradoxical elevation
Negative lead-in flag: false

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E6 Medicine Davidson Principles Practice 24e p. 563-565

E6 Medicine Harrison 22e Part 1 p. 1902-1904

Practise the full SCTIMST Staff Nurse - 2016

Attempt every question from this paper in a timed mock, then review the full solution for each one.