Why does collapsing pulse sensation when lifting the right hand above the head?
This happens because the blood that is pumped to the arm during systole is emptied very quickly due to the gravity effect on the raised arm.
What causes Bisferiens pulse?
The most common causes of pulsus bisferiens are: Mixed aortic valve diseases, such as infective endocarditis, rheumatic heart disease, Marfan syndrome, and bicuspid aortic valve. Hypertrophic cardiomyopathy with obstruction (HOCM)
Why is it called water hammer pulse?
This type of pulse was likened to a water hammer, a Victorian toy consisting of a glass tube filled partly with water or mercury in a vacuum. The water or mercury produced a slapping impact when the glass tube was turned over. Also called a Corrigan pulse or a cannonball, collapsing, pistol-shot, or trip-hammer pulse.
Does bounding pulse affect blood pressure?
A rapid heart rate and bounding pulse both occur normally with heavy exercise, pregnancy, fever, or high anxiety. A bounding pulse is often associated with high blood pressure or fluid overload.
Why does pulsus bisferiens cause aortic stenosis?
The bisferiens pulse in severe aortic regurgitation has been attributed to a Venturi effect that occurs in the ascending aorta in mid-systole due to the high flow produced by ventricular ejection.
Why does pulsus bisferiens have two peaks?
Pulsus bisferiens, also known as biphasic pulse, is an aortic waveform with two peaks per cardiac cycle, a small one followed by a strong and broad one. It is a sign of problems with the aorta, including aortic stenosis and aortic regurgitation, as well as hypertrophic cardiomyopathy causing subaortic stenosis.
Why pulse pressure is high in aortic regurgitation?
As chronic aortic regurgitation worsens, regurgitant volume increases, as does stroke volume in order to maintain forward cardiac output. This results in increased systolic pressures, reduced diastolic pressures and widened pulse pressure.
Why does aortic stenosis decrease pulse pressure?
In aortic stenosis, there is a narrowing of the aortic valve, which interferes with the ejection of blood from the left ventricle into the aorta, which results in a decrease in stroke volume and a subsequent decrease in pulse pressure.
What causes hyperkinetic pulse?
Anxiety, exercise, fever, hyperthyroidism, and anemia can cause a hyperkinetic pulse in a normal person with a large left ventricular stroke volume and an otherwise normal cardiovascular system.
What is the pathophysiology of the water hammer pulse?
In physiological and hyperdynamic circulatory states, the fall in systemic vascular resistance and increased cardiac output causes the water hammer pulse. The pathophysiology in patients with aortic regurgitation is different.
What causes water hammer pulse in aorta?
Water hammer pulse can be related to hyperdynamic circulatory states or cardiac lesions, but it is most commonly associated with aortic regurgitation. This activity describes the evaluation of patients with water hammer pulse and reviews the etiology-based management of these patients.
When was the water hammer pulse first seen?
It is seen in many physiological and pathological conditions but is most often associated with aortic regurgitation. In 1833, Dr. Dominic John Corrigan first described the water hammer pulse when he saw the visible sudden distention and collapse of the carotid arteries in patients with aortic regurgitation.
Is the water hammer a systolic or diastolic phenomenon?
Therefore, the “water hammer” is a systolic phenomenon which cannot be directly explained by the diastolic aortic regurgitant flow nor by continuous forward emptying to vasodilated distal microvascular beds.