Abstract
Article: Use of Doppler Sonography in Evaluating the Effect of Age in the Central Retinal Artery: A Cohort Study
Author: Mustafa Z. Mahmoud, PhD
Category: Other [OT]
Credit: 0.75 SDMS CME Credit
Objectives: After studying the article titled “Use of Doppler Sonography in Evaluating the Effect of Age in the Central Retinal Artery: A Cohort Study,” you will be able to:
Evaluate the retinal artery using duplex ultrasonography
Describe the normal hemodynamic flow patterns of the retinal artery
Distinguish the sonographic features of the retinal anatomy
ALARA considerations for the reported study mandated: Low output power and low exposure time High output power and low exposure time Low output power and long dwell times High output power and long dwell times
The lowest average peak systolic velocities in the reported study were found in the age group: 14-24 years 25-35 years 47-57 years 58-68 years
In the reported study, the depth at which the central retinal artery was detected was approximately: 15 mm 20 mm 25 mm 30 mm
For this study, the recommended value for the thermal index was: <0.4 0.4-0.6 0.6-0.7 0.7-0.9
A consistent finding in the reported study was that with increasing age: Peak systolic velocity increased and resistive index increased Peak systolic velocity decreased and resistive index increased Peak systolic velocity increased and resistive index decreased Peak systolic velocity decreased and resistive index decreased
In general, blood flow in the major arterial systems: Slightly increases with age Increases by at least a factor of two with age Decreases with age Does not change with age
A recognized limitation of the reported study was: The variety of ages of subjects The lack of exclusion criteria Inability to acquire Doppler flow signals A preponderance of subjects in one age group
Footnotes