Blood pressure measurement using Korotkoff sounds

Blood pressure and heart rate measurement are the most commonly used parameters to determine the health of a person. This paper aims at implementing a blood pressure monitoring system using a novel approach. A digital stethoscope is designed and implemented which is used to record the Korotkoff sounds, which is utilized by the blood pressure module to determine the blood pressure of the individual. The signals from these modules are captured via DAQ cards and fed to a computer for further processing using LabVIEW software. The system shows invariance to external noise due to appropriate filtering and signal conditioning. The prototype possesses advantages of having small volume, low power consumption, and real time processing capabilities.