What is the need for auscultation of the arteries?

Auscultation of arteries is a study that allows to determine the conduct of cardiac noise and the violation of their conductivity. Investigation of the arteries of the legs is best done lying down, and the rest - in an upright position. Listening takes place at the places where they palpate. In order to get the most objective picture, you should use the funnel of the biauric stethoscope.

Before auscultation, the palpation of the location of the examined artery should first be determined. Then a stethoscope is placed on this place and a noise analysis is performed.

Do not press too hard on the listening position. As this causes systolic noises, then tone. If the lumen of the vessel overlaps completely, then any sound will disappear.

The origin of noise when listening to arteries

In normal body condition, noise over the arteries, as well as over the heart muscle, should not be listened to. Cardiac tones can be detected only on large arterial trunks located to it in the immediate vicinity( subclavian and carotid).

The appearance of systolic tone in the study of other arteries can be noted in a number of diseases. So high temperature, hyperthyroidism, narrowing of the aorta with its stenosis or pronounced atherosclerosis manifests itself. Some heart defects, for example, non-healing of the botulinum duct or insufficiency of the aortic valve, can cause a systolic and diastolic tone on the arteries of the shoulder and hip.

Some noise on the arterial vessels can arise as a result of holding them from the heart with an interventricular septal defect, aortic stenosis. But most often the noise above the vessel is revealed when it changes as a result of the disease - compression by a tumor or scar, with obliterating pathologies, an aneurysm of the wall.

Noises and tones in vessels located near the heart can be caused by exercise. The effects of sound on peripheral vessels are always the result of local changes. The noise that occurs in the thyroid gland during the development of goiter can be caused by the expansion of its arteries and the increase in the rate of blood flow in them.

Sometimes systolic noise in the vessels has a different origin. With anemia, the blood flow rate increases as a result of a decrease in its viscosity, and as a result, a noise effect occurs. It can be double.

Signs of severe stenosis may be a noise that continues throughout the systole and passes into the diastole.

Auscultation of the vessels of the neck is performed with a delay in breathing, as additional noise will occur during inspiration and exhalation. If there is a need to listen to the abdominal region, then it should be done before carrying out her palpation, because the pressure on it causes the sounds of intestinal peristalsis, which drown out the weak sounds from the vessels of the abdomen.

Auscultation of the aorta in the abdominal region in very thin patients in the horizontal position can cause compression and the formation of additional noise, so this study is better to hold standing.

Auscultation points

It would not be entirely correct to talk about specific points in auscultation of vessels. Correctly call these places the best listening zones, in the area where the doctor finds the place in which the sound has the highest audibility. On the sides of it the noise is determined. Normally, it is best to hear such a conduct in the side where the blood flows.

In the place where auscultation is carried out, several arterial vessels can be located, so the noise is relative and is defined as probable.

So, there are the following areas for research:

• in the jugular fossa( aortic arch);
• angle of the lower jaw and all over the nipple of the muscle( carotid arteries);
• two centimeters above the clavicle, outside of the nerve muscle( vertebral arteries);
• over the clavicle( subclavian arteries).

The bulk of arteries have points of best listening in places where they are palpated.

Clinicians noted that certain sound effects are audible only on arteries of large or medium caliber. Smaller vessels do not produce noise that can catch the ear.

Auscultation in arterial hypertension reveals a second tone accent in the area of ​​the aortic outflow from the heart, which is well conducted in the direction of the blood flow. Strengthening the second tone and weakening the first testify to the long course of the disease and the development of sclerosing. They can arise in the vessels, because the blood flow increases with increasing frequency of contractions of the heart muscle, sometimes the third and fourth tone can be heard.

It should be noted that auscultation of the arteries is of secondary importance and in clinical practice it can not be the only diagnostic sign.

Like the article? Share with friends and acquaintances: