Hyung W Chun’s scientific contributions

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Publications (1)


Figure 1 Extraction of BP Features. (a) Area, Pulse, MAP, Systolic and Diastolic during each cardiac cycle. (b) Sys Slope and Dia Slope during BH. *represents systolic trend during BH. Solid red line represents the fitted linear line.
Figure 2 Blood Pressure Variations during Apnea. (a) Intermittent BH Maneuvers in Supine A. BH segments are marked by red dotted line. (b) Overnight Polysomnography. Note the significant oscillations in BP along with reduction in SaO2 saturation. Patterns are similar in both BH maneuvers and OSA episodes.
Quantitative Assessment of Apnea-Induced Dynamic Blood Pressure Variations
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March 2016

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Hyung W Chun

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Citations (1)


... Our prior investigations of nocturnal BP dynamics in OSA patients documented that for almost every obstructive event, the OSA patient experiences a significant surge in BP [21][22][23]. Since OSA patients experience numerous obstructive apnea and hypopnea events during sleep, their cardiovascular system is subjected to significant BP oscillations. Hence, quantifying these oscillations for the whole night is of interest. ...

Reference:

Respiratory Event-Induced Blood Pressure Oscillations Vary by Sleep Stage in Sleep Apnea Patients
Quantitative Assessment of Apnea-Induced Dynamic Blood Pressure Variations