Expired CME Article
Jugular Venous Pulse: Window into the Right Heart
Abstract
Although physicians began associating conspicuous neck veins with heart disease almost three centuries ago, the jugular venous pulse remains an often ignored component of the physical examination. Many physicians have not invested in the necessary understanding of the technique, and there is a misconception that its examination is difficult and of limited clinical value. When performed properly, evaluation of the jugular venous pulse can be extremely useful in distinguishing the cause of dyspnea and edema.
The normal jugular venous pulse is reviewed, and pulse wave abnormalities are described, including ways in which they can provide clues to the diagnosis of certain disease states, ranging from pericardial disease to conduction disturbances. The jugular venous pulse provides a window into the right heart and an occasional glimpse of left heart hemodynamics. By peering through this window, clinicians can gain valuable information in the diagnostic evaluation of the cardiovascular patient.
Key Points
* In patients with atrial fibrillation and severe tricuspid regurgitation, the jugular venous pulse can be easily mistaken for carotid pulsation.
* Cannon a waves result when there is loss of atrioventricular synchrony, a feature of several different types of arrhythmias.
* The presence of the y descent on physical examination can serve as a useful clue for excluding pericardial tamponade in a patient presenting with hypotension and distended neck veins.
* In contrast to traditional teaching, when the thorax is elevated to 30° or more, 10 cm should be added to the height of the venous column from the sternal angle to best obtain an estimate of the jugular venous pressure.
* In the absence of isolated right ventricular failure, a positive hepatojugular reflux suggests a pulmonary artery wedge pressure of 15 mm Hg or greater.
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