Τίτλος:
ON LINE ECHOCARDIOGRAPHY IN EVALUATING LEFT ATRIAL CHANGES IN ACUTE
MITRAL REGURGITATION AND IN MONITORING A CATHETER-MOUNTED BALLOON FOR
ITS CORRECTION
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
The purpose of this study was to evaluate changes in the left atrial
size in acute mitral regurgitation (AMR) and monitor its correction by a
catheter-mounted balloon (B). In 16 dogs, pressure changes in the left
atrium (LA) were related to LA size and regurgitant mitral flow after
the production of AMR by severing the mitral cusps. TEE was used for
evaluating LA area (ALA) and the mitral regurgitation flow area (AMRF).
TEE was also used in monitoring the position of a catheter-mounted B
inserted through the LV apex and positioned on the mitral ring to
relieve AMR. The B was inflated during systole and deflated during
diastole. The ALA increased by 4.89 +/- 1.21 cm(2) (mean +/- 1 SD) (p <
0.001) after AMR, the AMRF increased by 3.01 +/- 0.85 cm(2) (p < 0.001)
and the mean atrial pressure (LAP) by 9.38 +/- 2.43 mmHg (p < 0.001). In
all experiments the position of the B could be confirmed in the 2D image
and in 4 the reduction of AMRF by the function of the B was documented
by the colour flow Doppler. It is concluded that after AMR the size of
the LA increases along with the increase in LA pressure and a phasically
inflated balloon and its effect on AMR can be easily identified and
monitored by TEE.
Συγγραφείς:
CHRISSOS, DN
FOUSSAS, SG
PELEKANOS, ED
THEOCHARIS, AG and
ANTONATOS, PG
ANTHOPOULOS, LP
MOULOPOULOS, SD
Περιοδικό:
The International Journal of Artificial Organs
Λέξεις-κλειδιά:
ACUTE MITRAL REGURGITATION; LEFT ATRIAL ENLARGEMENT; TRANSESOPHAGEAL;
ECHOCARDIOGRAPHY
DOI:
10.1177/039139889501800207
