Ocular Blood Flow Measured Using Laser Speckle Flowgraphy During Aortic Arch Surgery With Antegrade Selective Cerebral Perfusion.
OBJECTIVE
The objective of this study was to evaluate the validity of ocular blood flow measured using laser speckle flowgraphy (LSFG) for the assessment of cerebral perfusion during aortic arch surgery.


METHODS
A prospective study.


METHODS
A single university hospital.


METHODS
The study included 17 patients undergoing aortic arch surgery with cardiopulmonary bypass (CPB) using antegrade selective cerebral perfusion (ASCP).


METHODS
Measurement of ocular blood flow using LSFG.


RESULTS
Measurement of ocular perfusion that is supplied mainly from the ophthalmic artery might be useful as an indicator of cerebral blood flow because the ophthalmic artery is the first branch of the internal carotid artery. Recently, LSFG has been developed for noncontact estimation of ocular perfusion using the laser speckle phenomenon. In this study, the LSFG system was used to measure blood flow in the optic nerve head during aortic arch surgery with CPB using ASCP. The blood flow in the optic nerve head during ASCP was statistically significantly reduced by 40.6% compared with the baseline value after anesthetic induction.


CONCLUSIONS
Ocular blood flow measured using LSFG showed favorable validity for assessment of cerebral perfusion during aortic arch surgery with ASCP.
Departments of Anesthesiology. Electronic address: payashi77@hotmail.com.
Hironobu
H
Hayashi
Ophthalmology.
Masahiro
M
Okamoto
Departments of Anesthesiology.
Hideaki
H
Kawanishi
Ophthalmology.
Toyoaki
T
Matsuura
Thoracic and Cardiovascular Surgery, Nara Medical University, Nara, Japan.
Nobuoki
N
Tabayashi
Thoracic and Cardiovascular Surgery, Nara Medical University, Nara, Japan.
Shigeki
S
Taniguchi
Departments of Anesthesiology.
Masahiko
M
Kawaguchi
D000368:Aged; D001013:Aorta, Thoracic / Q000601:surgery*; D001783:Blood Flow Velocity / Q000502:physiology; D019917:Blood Vessel Prosthesis Implantation / Q000379:methods*; D002245:Carbon Dioxide / Q000097:blood; D002315:Cardiopulmonary Bypass; D002560:Cerebrovascular Circulation / Q000502:physiology; D005123:Eye / Q000098:blood supply*; D006801:Humans; D017078:Laser-Doppler Flowmetry / Q000379:methods*; D008833:Microcirculation / Q000502:physiology; D008875:Middle Aged; D016343:Monitoring, Intraoperative / Q000379:methods; D009880:Ophthalmic Artery / Q000503:physiopathology; D009898:Optic Disk / Q000098:blood supply; D010100:Oxygen / Q000097:blood; D010313:Partial Pressure; D011446:Prospective Studies; D012039:Regional Blood Flow / Q000502:physiology
D002245:Carbon Dioxide; D010100:Oxygen
aortic arch; cardiac surgery; cardiopulmonary bypass; cerebral blood flow; cerebral protection; ocular blood flow