7/29/2023 0 Comments Korotkoff sounds![]() Nonetheless, a well-trained observer is necessary for this method, which motivates the development of the oscillometric method. This method has served as the gold standard for BP measurements for more than 100 years in clinics 1. When using the auscultatory method, a cuff is wrapped around the subject’s upper limb and an observer listens to the Korotkoff sounds (K-sounds) using a stethoscope. ![]() Thus, non-invasive blood pressure (NIBP) measurement methods have been proposed, such as the auscultatory and the oscillometric methods. Although the most accurate BP measurement method is to insert a pressure probe into an artery, this invasive method is limited in use due to the high risk of bleeding and infection. With larger amounts of various types of data, the proposed method can potentially achieve more precise and robust results.īlood pressure (BP) is one of the primary vital signs in the human body and is one of the most important physical quantities, not only for a clinical diagnosis of hypertension but also for personal healthcare. The results demonstrate that the proposed method outperforms a previously reported CNN-based classification method using K-sounds. The proposed method was tested with a dataset acquired in practice that occasionally contains considerable noise, which can degrade the performance of the threshold-based methods. These values in a Korotkoff cycle are arranged in time order, and the blood pressure is determined. Instead of classifying sound pulses into two categories, audible K-sounds and others, the proposed CNN model outputs probability values. ![]() The proposed method enables robust and precise BP measurements by evaluating the probability that each sound pulse is an audible K-sound based on a deep learning using a convolutional neural network (CNN). There have been methods utilizing K-sounds that were more accurate in general than those using cuff pressure signals only under well-controlled environments, but most were vulnerable to the measurement conditions and to external noise because blood pressure is simply determined based on threshold values in the sound signal. 1994 Aug 24(2):234-40.This paper proposes a method that automatically measures non-invasive blood pressure (BP) based on an auscultatory approach using Korotkoff sounds (K-sounds). How Should Diastolic Blood Pressure Be Defined During Pregnancy? Hypertension.
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