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Updated: May 18, 2026
Videomorphometric Analysis of Hypoxic Pulmonary Vasoconstriction of Intra-pulmonary Arteries Using Murine Precision Cut Lung Slices
Published on: January 14, 2014
Respiratory-induced vasoconstriction measured by light transmission and by laser Doppler signal
Eran Shalom1, Salman Noach, Youval Slovik
1Department of Applied Physics/Medical Engineering, Jerusalem College of Technology, 21, Havaad Haleumi Street, POB 16031, Jerusalem 91160, Israel.
Abstract:
Changes in finger tissue blood volume (TBV) measured by light transmission and in laser Doppler flow (LDF) were obtained during long breathing (of 12 s period) and associated with the respiratory phases, inspiration and expiration. For fifteen out of sixteen subjects TBV and LDF started to decrease 0-2 s after the start of expiration and increased during inspiration but the start of increase occurred before the start of inspiration, showing that the respiratory-induced changes in TBV and LDF are mainly associated with the expiration. Decrease of TBV and LDF after expiration was also found during the inspiratory gasps
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