If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Optical Spectroscopic Method for in Vivo Measurement of Cardiac Myoglobin Oxygen Saturation

$29.00 plus tax (Refund Policy)

Buy Article:


A fiber-optic-based spectrophotometer was developed to acquire optical reflectance spectra from a living dog heart. A bullseye concentric optical probe with a 3 mm source-to-detector fiber separation was designed to obtain a 1.5 mm average tissue depth of light penetration. Spectra were analyzed in the near-infrared region from 660 to 840 nm. Myoglobin oxygen saturation was determined by partial least-squares analysis using a calibration spectral data set developed in vitro. Comparison of in vivo and in vitro spectra by Mahalanobis distance and residual ratio tests demonstrated good similarity, justifying use of partial least-squares analysis. Coronary perfusion with an oxygenated blood substitute, Fluosol , was used to demonstrate that hemoglobin had little effect on the analysis. An increase in myoglobin saturation of 5% was noted when the animals were changed from inspired room air to 100% oxygen. Occlusion of the coronary artery resulted in prompt decrease in myoglobin saturation, and release of the occlusion was followed by rapid increase in saturation to a value above baseline. These experiments demonstrate that it is feasible to use partial least-squares analysis of near-infrared reflectance spectra to determine myoglobin saturation in the blood-perfused, beating heart.
More about this publication?
Related content



Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more