Nikolai S., Russian physician, 1874-1920. See: Korotkoff sounds, Korotkoff test.
Farlex Partner Medical Dictionary © Farlex 2012
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Phase-I (K1) of Korotkoff sound was taken as Systolic and Phase-IV (K4) of Korotkoff sound was considered as Diastolic blood pressure.
Phase I and V Korotkoff sounds were used to determine systolic BP (SBP) and diastolic BP (DBP) measurements.
The systolic blood pressure corresponds to the first arterial noises (phase I of the Korotkoff sounds) with the deflation of the cuff, and the diastolic blood pressure corresponds to its disappearance (phase V of the Korotkoff sounds).
CBP was determined using a standard mercury sphygmomanometer, with the systolic blood pressure (SBP) determined at the first Korotkoff sound and the diastolic blood pressure (DBP) determined at the fifth Korotkoff sound.
Fifth-phase Korotkoff sound was used for diastolic blood pressure.
Blood pressure in the right arm was taken by trained doctors with the participants in a sitting position and having rested for at least 10 min; a sphygmomanometer with an appropriate cuff size and stethoscope were used in accordance with the recommendations of the American Heart Association.[14] SBP and DBP were taken at the 1st and 5th Korotkoff sounds, respectively.
BP was measured at the ACU at 2-3 weeks' intervals throughout the pregnancy, with the women seated with arm and backrest support, down to Korotkoff V with a manual sphygmomanometer.
Blood pressure (BP) was measured three times daily by the Korotkoff method using sphygmomanometer, on the right arm after 5-10 minutes of rest in the sitting position.
Using Korotkoff sounds to estimate SBP and DBP is another auscultatory measurement, and this has been widely accepted as the gold standard [3,4].