Understanding the methods and differences of DynaPulse oscillometric and K-sound BP measurements is important for clinic BP screening and self-BP monitoring, as well as future research to improve hypertension and CVD managements.Ĭopyright © 2011 American Society of Hypertension. ![]() The sounds appear when cuff pressures are between systolic and diastolic blood pressure, because the underlying artery is collapsing completely and then reopening with each heartbeat. 0001), when compared with K-sound auscultatory measurement. Youre using the wrong-sized cuff I first detectable sounds, corresponding to appearance of a palpable pulse II sounds become softer, longer and may. Korotkoff sounds are produced underneath the distal half of the blood pressure cuff. Mercury sphygmomanometers have been used. 0001) than Phase 4 (K4), and 3) is less than 1 mm Hg higher than Phase 5 (K5) diastolic (P <. At certain points in the sound pattern, the clinician reads the pressure using the mercury column of the manometer. Thus, as long as the cuff pressure is below the systolic pressure, but above the diastolic pressure, flow past the constriction site will be turbulent, and the sounds of Korotkoff will be heard. 0001) than Phase 1 (K1) systolic, 2) DynaPulse diastolic was 5 mm Hg lower (P <. However, as the constriction is relaxed further, turbulence in the flow decreases, and the Korotkoff’s sounds become dull and muffled. The results indicated: 1) DynaPulse systolic was 9 mm Hg higher (P <. Analysis of means and differences is applied to BP data collected from 803 subjects examined in the Bogalusa Heart Study. This study compares systolic and diastolic readings obtained by K-sound method following the Bogalusa Heart Study protocol and BP measured by DynaPulse (DP2000A) monitor, in order to better understand the nature and difference between K-sound and oscillometric methods. ![]() DynaPulse is an oscillometric digital BP monitor that records and analyzes subtle changes of pulse waveforms during the course of a BP measurement while cuff pressure slowly decreases from above systolic to below diastolic. Analyzing cuff oscillometric signals to obtain BP has been the foundation of most digital BP monitors available today. It is the essential tool used for evaluation and assessment of patients with hypertension and risks of cardiovascular diseases (CVD) by physicians and nurses despite limited understanding of the nature of K-sounds. (see Korotkoff sounds) when blood flow first starts again in the artery. Listening to Korotkoff sounds (K-sounds) to determine systolic and diastolic blood pressure (BP) has been the standard for noninvasive BP measurement in medical practices for nearly 100 years. As the pressure in the cuffs falls, a whooshing or pounding sound is heard.
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