Document Detail

Right ventricular function in patients with first inferior myocardial infarction: assessment by tricuspid annular motion and tricuspid annular velocity.
MedLine Citation:
PMID:  10740156     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Unlike left ventricular function, right ventricular (RV) function has not been widely studied after a myocardial infarction (MI). The current study describes RV function determined by tricuspid annular motion and tricuspid annular velocity after MI. METHODS AND RESULTS: Thirty-eight patients with a first acute inferior MI were prospectively compared with 33 patients with a first anterior MI and 24 age-matched healthy individuals. Association of RV infarction in inferior MI was defined as the presence of >/=1-mm ST-segment elevation at the right precordial lead, V(4)R, of the electrocardiograms. From the echocardiographic apical 4-chamber views, the systolic motion of the tricuspid annulus was recorded at the RV free wall with the use of 2-dimensional guided M-mode recordings. Peak systolic and peak early and late diastolic velocities of the tricuspid annulus at the RV free wall also were recorded with the use of pulsed-wave Doppler tissue imaging. The tricuspid annular motion was reduced in inferior MI compared with that in healthy individuals (20.5 and 25 mm, P <.001). The peak systolic velocity of the tricuspid annulus was significantly reduced in inferior MI compared with that in healthy individuals (12 vs 14.5 cm/s, P <.001) and patients with anterior MI (12 and 14.5 cm/s, P <.001). Patients with inferior MI were divided into 2 subgroups: those with and those without electrocardiographic signs of RV infarction. The tricuspid annular motion was significantly lower in patients with RV infarction than in patients without RV infarction (17 and 22.7 mm, P <.001). In addition, compared with patients without electrocardiographic signs of RV infarction, patients with RV infarction also had a significantly decreased peak systolic tricuspid annular velocity (13.3 and 10.3 cm/s, P <.001) and peak early diastolic velocity (13 and 8.2 cm/s, P <.001). CONCLUSIONS: These results suggest that tricuspid annular motion and tricuspid annular velocity can be used to assess RV function in association with inferior MI.
M Alam; J Wardell; E Andersson; B A Samad; R Nordlander
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American heart journal     Volume:  139     ISSN:  0002-8703     ISO Abbreviation:  Am. Heart J.     Publication Date:  2000 Apr 
Date Detail:
Created Date:  2000-06-01     Completed Date:  2000-06-01     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0370465     Medline TA:  Am Heart J     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  710-5     Citation Subset:  AIM; IM    
Division of Cardiology, Karolinska Institute at South Hospital, Södersjukhuset, Stockhom, Sweden.
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MeSH Terms
Blood Flow Velocity / physiology
Echocardiography, Doppler, Pulsed
Hemodynamics / physiology*
Middle Aged
Myocardial Infarction / physiopathology,  ultrasonography*
Prospective Studies
Reference Values
Tricuspid Valve / physiopathology,  ultrasonography*
Ventricular Dysfunction, Left / physiopathology,  ultrasonography
Ventricular Dysfunction, Right / physiopathology,  ultrasonography*

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