![Nick Mark MD on Twitter: "Pulse Ox Question: what does this plethysmography waveform indicate? (Hint: what device might account for this waveform) https://t.co/24ybbVNMVa" / Twitter Nick Mark MD on Twitter: "Pulse Ox Question: what does this plethysmography waveform indicate? (Hint: what device might account for this waveform) https://t.co/24ybbVNMVa" / Twitter](https://pbs.twimg.com/media/E29Zg0NVcAYqodw.jpg:large)
Nick Mark MD on Twitter: "Pulse Ox Question: what does this plethysmography waveform indicate? (Hint: what device might account for this waveform) https://t.co/24ybbVNMVa" / Twitter
![Noninvasive assessment of asthma severity using pulse oximeter plethysmograph estimate of pulsus paradoxus physiology | BMC Pulmonary Medicine | Full Text Noninvasive assessment of asthma severity using pulse oximeter plethysmograph estimate of pulsus paradoxus physiology | BMC Pulmonary Medicine | Full Text](https://media.springernature.com/lw685/springer-static/image/art%3A10.1186%2F1471-2466-10-17/MediaObjects/12890_2009_Article_187_Fig1_HTML.jpg)
Noninvasive assessment of asthma severity using pulse oximeter plethysmograph estimate of pulsus paradoxus physiology | BMC Pulmonary Medicine | Full Text
![PDF] Pleth Variability Index : A Dynamic Measurement to Help Assess Physiology and Fluid Responsiveness | Semantic Scholar PDF] Pleth Variability Index : A Dynamic Measurement to Help Assess Physiology and Fluid Responsiveness | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/c94b6637a8e504fbe5cc923f5c2d12e885697df8/2-Figure1-1.png)
PDF] Pleth Variability Index : A Dynamic Measurement to Help Assess Physiology and Fluid Responsiveness | Semantic Scholar
![Estimation of airway obstruction using oximeter plethysmograph waveform data | Respiratory Research | Full Text Estimation of airway obstruction using oximeter plethysmograph waveform data | Respiratory Research | Full Text](https://media.springernature.com/lw685/springer-static/image/art%3A10.1186%2F1465-9921-6-65/MediaObjects/12931_2005_303_Fig1_HTML.jpg)