Tricuspid annular systolic velocity: a useful measurement in determining right ventricular systolic function regardless of pulmonary artery pressures.
Assessment of right ventricular (RV) systolic function can be somewhat difficult, particularly in pulmonary hypertension (PH). RV fractional area change (FAC) and tricuspid valve annular motion (TAPSE) although useful in the assessment of RV performance, their use can be sometimes limited and tedious. Thus, a quicker but yet reliable alternative is needed. Accordingly, we compared peak tricuspid annulus systolic (TA Sa) velocities derived from Doppler tissue imaging (DTI) with both RVFAC and TAPSE to estimate RV function in 52 patients (53 +/- 16 years) with varying degrees of PH. In this group, mean was RVFAC 49 +/- 20, TAPSE was 2.3 +/- 0.7 cm, peak TA Sa velocity by DTI was 10.4 +/- 3.8 cm/s, left ventricular systolic function was 57 +/- 18%, and pulmonary artery systolic pressure was 47 +/- 28 mmHg. An excellent correlation was noted between TAPSE and RVFAC (r = 0.91, P < 0.001). Similar correlations were noted between peak TA Sa velocity and RVFAC (r = 0.84, P < 0.001) and between peak TA Sa velocity and TAPSE (r = 0.90, P < 0.001). A TA Sa >10.5 cm/s identified individuals with both a normal RV function and without significant PH. Therefore, we conclude that TA Sa velocity, an easily obtainable DTI measure, that has an excellent correlation with more time-consuming methods to assess RV systolic function regardless of the degree of PH should be routinely assessed during the initial evaluation and eventual follow-up of patients either at risk or with documented PH.
Saxena
Neil
N
Cardiovascular Institute at the University of Pittsburgh Medical Center, 200 Lothrop Street, Pittsburgh, PA 15213, USA.
Rajagopalan
Navin
N
Edelman
Kathy
K
López-Candales
Angel
A
D000328:Adult; D000368:Aged; D001783:Blood Flow Velocity; D015150:Echocardiography, Doppler; D005260:Female; D006801:Humans; D006976:Hypertension, Pulmonary / Q000000981:diagnostic imaging / Q000503:physiopathology; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D011669:Pulmonary Wedge Pressure; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D013318:Stroke Volume; D013599:Systole; D014261:Tricuspid Valve / Q000000981:diagnostic imaging / Q000503:physiopathology*; D016277:Ventricular Function, Left; D016278:Ventricular Function, Right