Assessment of left ventricular function from M-mode measurement of circumflex artery motion recorded by coronary angiography.
OBJECTIVE
To evaluate the usefulness of M-mode measurement of circumflex artery motion (CAM) for assessment of left ventricular (LV) function.


METHODS
Seventy-two patients referred for coronary angiography and LV angiography were included. Ejection fraction (EF) was calculated from LV angiography and systolic and diastolic parameters of CAM were measured by M-mode from coronary angiography. Twenty-three patients, examined by echocardiography of mitral annulus motion (MAM) within 24 h before the angiographic examination, formed a subgroup for comparison between angiographic M-mode of CAM and echocardiographic M-mode of MAM.


RESULTS
In addition to previous reported CAM amplitude and longitudinal fractional shortening (FSL) the maximal systolic velocity of CAM can be reliably recorded by M-mode. The diastolic indices, atrial contribution to the total amplitude and maximal early and late diastolic velocities, are also well monitored by M-mode of CAM in comparison with echocardiographic MAM.


CONCLUSIONS
LV systolic and diastolic function can be assessed by M-mode of CAM.
Kähäri
Anders
A
Department of Radiology, Orebro University Hospital, Orebro, Sweden. anders.kahari@orebroll.se
Thunberg
Per
P
Emilsson
Kent
K
Geijer
Håkan
H
Andersson
Torbjörn
T
Wandt
Birger
B
D000328:Adult; D000368:Aged; D017023:Coronary Angiography / Q000379:methods*; D003326:Coronary Circulation / Q000502:physiology; D023921:Coronary Stenosis / Q000000981:diagnostic imaging / Q000503:physiopathology; D003331:Coronary Vessels / Q000000981:diagnostic imaging*; D003971:Diastole / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000502:physiology; D013599:Systole / Q000502:physiology; D014463:Ultrasonography; D016277:Ventricular Function, Left