Simple way to record central Aortic pulse in the Echo Lab !
Posted Jul 18 2012 12:25pm
A pulse wave is generated with each heart beat when the potential energy is converted into kinetic energy.
For the pulse wave to travel from the heart to periphery Aortic integrity is vital.
The pulse wave travels through the walls of arterial tree , in the process the wall itself is set into oscillations .
Whether the moving blood imparts the pulse on the walls or the walls itself vibrate independently is not clear.
The following M -Mode echocardiogram of aorta from young man stunningly documents the morphology of central aortic pulse wave . Note how closely it resembles the Intra- aortic pressure curve recorded with a catheter.
The anterior aortic wall motion was slicedfrom the above motion image to create a non invasive recording of aortic pulse wave
This simple observation was made in a crowded echo lab our hospital. Cardiology fellows can explore further , the link between aortic pulse transduction (From mechano -hemodynamics)
Further studies are warranted regarding the rate of raise(Slope) of aortic wall motion , and the quantum of motion,its correlation with central aortic pressure etc. This would unravel the the mechanisms of Isolated systolic hypertension , where a stiff aorta amplifies the systolic pressure due to loss of elasticity .