• Nandini.K.R
• Rakshitha.P
• Bhakthi.M.M
• Nanditha.H.G
• Hemapriyadarshini.S

Abstract- The force your heart needs to circulate blood throughout your body is measured by your blood pressure (BP). It is a critical and dependable estimation for ongoing patient monitoring of the patient's cardiac system and personal health. Blood pressure is measured in millimeters of mercury (mmHg), which is also classified as: systolic pressure, which represents the pressure while your heart pumps blood out, and diastolic pressure, which represents the pressure when your heart is at rest in between beats. Stress is known to be the primary cause of many major illnesses, including cardiac disease. For BP measurement, a continuous approach is necessary to solve this issue. There are several methods for measuring blood pressure, including invasive and non-invasive methods. Due to the discontinuity of both of these methods, a non-invasive methodology based on pulse transit time (PTT) has been developed to monitor the most crucial parameter, such as blood pressure. PTT refers to the lag between the R-wave peak of the electrocardiogram (ECG) signal and the rising edge peak of the photoplethysmogram (PPG) signal. In addition to being used to measure pulse wave velocity (PWV), the PTT time difference is also directly applied to the BP-PWV connection to calculate systolic and diastolic blood pressure (SBP/DBP). This technique was created mostly due to the fact that every individual produces electrical impulses of varying intensities. In this research, we get to the conclusion that the motion artefacts caused by the photoplethysmogram sensor can be minimised by ceramic capacitor and obtain accuracy in final output.

Photoplethysmogram sensor, Pulse transit time, Systolic blood pressure, Diastolic blood pressure.

"Cuffless blood pressure monitoring system using pulse transit time", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 7, page no.d355-d360, July-2022, Available :http://www.jetir.org/papers/JETIR2207344.pdf

"Cuffless blood pressure monitoring system using pulse transit time", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 7, page no. ppd355-d360, July-2022, Available at : http://www.jetir.org/papers/JETIR2207344.pdf