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[Left ventricular filling disturbances in cardiac amyloidosis: a study of atrial sound and diastolic inflow velocities].

Abstract：

:Cardiac amyloidosis is characterized by left ventricular filling disturbances in a relatively early stage. To investigate such disturbances more precisely, we studied atrial sound and left ventricular inflow velocity patterns. Twelve cases diagnosed as cardiac amyloidosis according to the clinical criteria including rectal biopsies and serum amyloid proteins or at autopsy were reviewed and analyzed. Their mean age was 60.9 +/- 12.5 years. Twelve age-matched cases with hypertrophic cardiomyopathy (HCM) served as the controls. We measured the amplitude of atrial sound by low-frequency phonocardiograms and the ratio of the heights of the A wave of apexcardiograms (ACG) to the total amplitude of the ACG. The mitral inflow velocity patterns were recorded using pulsed Doppler echocardiography. The rapid filling wave (R), atrial filling wave (A) and the ratio of A to R (A/R) were measured. In the amyloidosis group, atrial sound moderately increased in 2 cases, it was faint in 9 and not manifest in the remaining one. The A wave in the amyloidosis group was significantly smaller than that in the HCM group (p < 0.001) (12.4 +/- 3.9 vs 22.4 +/- 5.6%). In the left ventricular inflow velocity patterns, the R in amyloidosis was smaller than that in HCM (41.7 +/- 16.0 vs 56.4 +/- 12.1 cm/sec) (p < 0.02). The A in amyloidosis was also smaller than that in HCM (40.5 +/- 13.4 vs 58.1 +/- 13.0 cm/sec) (p < 0.006). The A/R was 1.0 +/- 0.34 in amyloidosis and 1.1 +/- 0.32 in HCM (N.S.). Both A and R were significantly less in amyloidosis than those in HCM.(ABSTRACT TRUNCATED AT 250 WORDS)

journal_name

J Cardiol

journal_title

Journal of cardiology

authors

Hayashi T,Yamanaka T,Fujinuma S,Kobayashi S,Yamaguchi H,Hatano H,Sakai Y,Inoue T,Takayanagi K,Morooka S

subject

Has Abstract,Author List Incomplete

pub_date

1992-01-01 00:00:00

pages

141-9

issue

1

eissn

0914-5087

issn

1876-4738

journal_volume

22

pub_type

杂志文章

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