Research | Myresearch

Smartphone device to measure blood pressure

This is a smartphone-encasing with custom sensors that allows blood pressure (BP) measurement from your fingertip. This device measures BP and displays the result on the smartphone screen when the user presses her fingertip against the device. [Details: Link]

An iPhone Application to measure blood pressure

We created a standalone iPhone Application to measure blood pressure using the existing sensors embedded in the phone. [Details: Link]

Importance of PPG sensor's contact pressure in cuff-less blood pressure measurement

Photo-plethysmography (PPG) sensors are often used to detect pulse transit time (PTT) for potential cuff-less blood pressure (BP) measurement. It is known that the contact pressure (CP) of the PPG sensor markedly alters the PPG waveform amplitude. The objective of this research was to test the hypothesis that PTT detected via PPG sensors is likewise impacted by CP. [Details: Link]

Formulas to explain popular oscillometric blood pressure estimation algorithms

Oscillometry is a method to estimate blood pressure non-invasively. Many office blood pressure monitors use this principle. We investigated some of the popular empirical algorithms used in these oscillometric devices. In this project, we developed closed-form mathematical formulas to explain these algorithms. These mathematical expressions give a better insight to the readers on when these algorithms can and cannot be used. [Details: Link]

Methods to measure Tissue Perfusion Pressure

Our objective was to create a novel method for monitoring patients in the intensive care unit, aimed at optimizing therapies for conditions such as circulatory shock, heart failure, and others. The main focus of our approach was to devise a way to measure a fundamental circulation property referred to as critical closing pressure (Pcrit), and thereby use the parameter to measure the perfusion status of the end organs.

[Details: Link]