Eponymous Signs in Cardiology
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Direct answer
Cardiology eponyms are named bedside findings that point to a specific valve or pericardial lesion, and examiners test them in clinical vignettes. Five named signs of aortic regurgitation reflect a large regurgitant volume, while Kussmaul sign favours constriction and Beck triad signals cardiac tamponade at the bedside.
What you must remember
- Corrigan pulse: a collapsing water-hammer pulse with a wide pulse pressure in severe aortic regurgitation.
- Quincke pulse: capillary pulsation visible in the nail bed, another feature of aortic regurgitation.
- de Musset sign: rhythmic nodding of the head with each heartbeat in aortic regurgitation.
- Duroziez sign: a to-and-fro murmur over the femoral artery on partial compression, produced by systolic and diastolic flow.
- Austin Flint murmur: a low-pitched mid-diastolic rumble at the apex in severe aortic regurgitation, mimicking mitral stenosis.
- Graham Steell murmur: an early diastolic murmur at the left sternal edge from functional pulmonary regurgitation in pulmonary hypertension.
- Kussmaul sign: a paradoxical rise in jugular venous pressure on inspiration, seen in constrictive pericarditis.
- Beck triad: hypotension, raised jugular venous pressure and muffled heart sounds in cardiac tamponade.
Eight signs and the lesion behind each
Most cardiology eponyms are learned with the lesion that produces them, so the table is organised by lesion. Five of the eight signs belong to aortic regurgitation, which is why that valve dominates examinations.
| Sign | Lesion | Bedside finding |
|---|---|---|
| Corrigan pulse | Severe aortic regurgitation | Collapsing, water-hammer pulse |
| Quincke pulse | Aortic regurgitation | Capillary pulsation in the nail bed |
| de Musset sign | Aortic regurgitation | Head nodding with each heartbeat |
| Duroziez sign | Aortic regurgitation | To-and-fro femoral murmur on partial compression |
| Austin Flint murmur | Severe aortic regurgitation | Low mid-diastolic apical rumble |
| Graham Steell murmur | Pulmonary hypertension | Early diastolic murmur, louder on inspiration |
| Kussmaul sign | Constrictive pericarditis | Jugular venous pressure rises on inspiration |
| Beck triad | Cardiac tamponade | Hypotension, raised venous pressure, muffled sounds |
Pulse pressure and murmur location reflect the physiology of regurgitation, so bounding and collapsing pulses sit with the large-volume lesion. Kussmaul sign favours constriction, while pulsus paradoxus, a fall in systolic pressure on inspiration, favours tamponade.
Traps in murmur and pulse vignettes
Cardiology eponyms are often tested as look-alikes, so the discriminating feature matters more than the name.
- Trap: calling a mid-diastolic apical murmur mitral stenosis without checking the pulse Correct: the Austin Flint murmur accompanies severe aortic regurgitation with a wide pulse pressure, whereas mitral stenosis has an opening snap and presystolic accentuation.
- Trap: expecting Kussmaul sign in tamponade Correct: tamponade gives pulsus paradoxus with muffled heart sounds, while Kussmaul sign favours constriction.
- Trap: confusing the Graham Steell murmur with the murmur of aortic regurgitation Correct: the Graham Steell murmur is louder on inspiration and comes with a loud P2, reflecting pulmonary hypertension.
Frequently asked questions
Which eponymous sign distinguishes constrictive pericarditis from tamponade?
Kussmaul sign, a rise in jugular venous pressure on inspiration, favours constrictive pericarditis. Pulsus paradoxus, a fall in systolic pressure of more than about 10 mmHg on inspiration, favours cardiac tamponade.
What is the Austin Flint murmur and why does it mimic mitral stenosis?
The Austin Flint murmur is a low-pitched mid-diastolic rumble heard at the apex in severe aortic regurgitation. The regurgitant jet makes the anterior mitral leaflet flutter, which mimics the mid-diastolic murmur of mitral stenosis.
Which bedside signs suggest severe aortic regurgitation?
Corrigan pulse, Quincke capillary pulsation, de Musset head nodding and the Duroziez femoral sign suggest a large regurgitant volume. A wide pulse pressure alongside these signs supports the diagnosis of severe aortic regurgitation.
What is Beck triad?
Beck triad is hypotension, raised jugular venous pressure and muffled heart sounds, which together signal cardiac tamponade. Echocardiography confirms the diagnosis by showing a pericardial effusion with chamber collapse.