In recent years, extensive studies have been conducted on non-invasive and cuff-less BP estimation using photoplethysmography (PPG) signals. PPG is a non-invasive optical method for measuring blood volume changes per pulse. In other words, the PPG waveform represents the mechanical activity of the heart.

How do you convert specific gravity to PPG?

Convert specific gravity to mud weight in pounds per gallon (ppg) Mud weight in ppg = specific gravity (SG) × 8.33 Example: specific gravity = 1.50 mud wt, ppg = 1.50 × 8.33 mud wt = 12.5 ppg 2.

How do you calculate pressure from mud weight?

Hydrostatic pressure is calculated from mud weight and true vertical depth as follows: Hydrostatic pressure, psi = 0.052 x Mud Weight, lbm/gal x True Vertical Depth, ft. (To convert to SI units, 1.0 psi = 6.9 kPa.)