Se encontró que la tasa de prevalencia de hipertensión arterial se elevó con la los ruidos primero y quinto de Korotkoff, con intervalo de 5 minutos en el brazo.

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Korotkofc sounds are the sounds that medical personnel listen for when they are taking blood pressure using a non-invasive procedure. They are named after Dr.

Korotkoff sounds

Nikolai Korotkova Russian physician who discovered them in[1] when he was korogkoff at the Imperial Medical Academy in St. Petersburgthe Russian Empire. The sounds heard during measurement of blood pressure are not the same as the heart sounds that are due to vibrations inside the ventricles that are associated with the snapping shut of the valves.

As the heart beats, these pulses are transmitted smoothly via laminar non-turbulent blood flow throughout the arteries, and no sound is produced. Similarly, if the cuff of a sphygmomanometer is placed around a patient’s upper arm and inflated to a pressure above the patient’s systolic blood pressurethere will be no sound audible.

This is because the pressure in the cuff is high enough such that it completely occludes the blood flow.

Korotkoff sounds – Wikipedia

This is similar to a flexible tube or pipe with fluid in it that is being pinched shut. If the pressure is dropped to a level equal to that of the patient’s systolic blood pressure, the first Korotkoff sound will be heard.


As the pressure in the cuff is the same as the pressure produced by the heart, some blood will be able to pass through the upper arm when the pressure in the artery rises during systole. This blood flows in spurts as the pressure in the artery rises above the pressure in the cuff and then drops back down beyond the cuffed region, resulting in turbulence that produces korotkoff audible sound.

As the pressure in the cuff is allowed to fall further, thumping sounds continue to be heard as long as the pressure in the cuff is between the systolic and diastolic pressures, as the arterial pressure keeps on rising above and dropping korottkoff below the pressure in the cuff.

Eventually, as the pressure in the cuff drops further, the sounds change in quality, then become muted, and finally disappear altogether. This occurs because, as the pressure in the cuff drops below the diastolic blood pressure, the cuff no longer provides any restriction to korotkofff flow allowing the blood flow to become smooth again with no turbulence and thus produce no further audible sound.

There are five Korotkov sounds: The second and third Korotkov sounds have no known clinical significance. In some patients, sounds may disappear altogether for a short time between Phase II and III which is referred to as auscultatory gap.

Traditionally, the systolic blood pressure is taken to be the pressure at which the first Korotkov sound is first heard and the diastolic blood pressure is the pressure at which the fourth Korotkov sound is just barely kororkoff.

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However, there has recently been a move towards the use of the fifth Korotkov sound i. For pediatrics auscultation of the fourth Korotkov sound ruids the guiding indicator of diastolic pressure. The time average of the first Korotkov sound represents a reliable pressure marker of systole of the heart.

The time average of the fourth Korotkov sound represents a reliable pressure marker of diastole of the heart. From Wikipedia, the free encyclopedia.

The Cambridge Illustrated History of Medicine. Korotkov of the auscultatory method of measuring blood pressure”.

Normas, consejos y clasificaciones sobre hipertensión arterial

Blood Pressure Measurement in Humans: Evidence-Based Nursing Procedures 2nd ed. Nelson Textbook of Pediatrics 19th ed. Eponymous medical signs for circulatory system. Benign paediatric heart murmur Still’s murmur Diastolic heart murmur: Beck’s triad Ewart’s sign. Retrieved from ” https: Audible medical signs Blood pressure. Views Read Edit View history.

This page was last edited on 27 Decemberat By using this site, you agree to the Terms of Use and Privacy Policy. Heart murmur Systolic heart murmur: Arterial aortic aneurysm Cardarelli’s signOliver’s sign pulmonary embolism McConnell’s sign radial artery sufficiency Allen’s test pseudohypertension Osler’s sign thrombus Lines of Zahn Adson’s sign arteriovenous fistula Nicoladoni sign.