Abstract:
BACKGROUND:Left-ventricular pseudohypertrophy reflecting left-ventricular compression was reported in a selected group of patients with cardiac tamponade. HYPOTHESIS:Criteria for the presence of pseudohypertrophy can be established to guide its use as a sign of left-ventricular compression in patients with cardiac tamponade. METHODS:Left-ventricular wall thickness, diameters, relative diastolic wall thickness (%) = (posterior wall thickness/end diastolic radius) x 100 and estimated left-ventricular mass were measured in patients with small, moderate and large pericardial effusion, in patients with cardiac tamponade before and after pericardiocentesis (16 patients in each group) and in 30 control subjects with normal echocardiograms. RESULTS:Left-ventricular posterior wall thickness was increased (12 +/- 2 vs. 9 +/- 1 mm, p < 0.001), left-ventricular end-diastolic diameter was reduced (3.9 +/- 0.5 vs. 4.6 +/- 0.3 cm, p < 0.001) and relative left-ventricular diastolic wall thickness was increased (61 +/- 13 vs. 41 +/- 4.5%, p < 0.001) only in patients with cardiac tamponade compared to controls, but not in patients with small, moderate and large effusions, respectively (relative wall thickness: 42 +/- 5, 41 +/- 7 and 44 +/- 7%, p = NS). Mean values of the estimated left-ventricular mass were similar in all groups. Following pericardiocentesis all parameters were normal. CONCLUSIONS:Despite normal left-ventricular mass, relative left-ventricular diastolic wall thickness is elevated in patients with cardiac tamponade. In contrast it is normal in patients with various degrees of pericardial effusion supporting its use as a quantitative measure of left-ventricular compression in patients with suspected cardiac tamponade.
journal_name
Cardiologyjournal_title
Cardiologyauthors
Feinberg MS,Popescu BA,Popescu AC,Di Segni E,Jonas M,Rabinowitz B,Kaplinsky E,Schwammenthal Edoi
10.1159/000047319subject
Has Abstractpub_date
2000-01-01 00:00:00pages
213-9issue
4eissn
0008-6312issn
1421-9751pii
47319journal_volume
94pub_type
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