Tricuspid annular plane systolic excursion and central venous pressure in mechanically ventilated critically ill patients.
BACKGROUND
The tricuspid annular plane systolic excursion (TAPSE) is commonly recommended for estimating the right ventricular systolic function. The central venous pressure (CVP), which is determined by venous return and right heart function, was found to be associated with right ventricular outflow fractional shortening. This study thus aimed to investigate the relationship between the TAPSE and CVP in mechanically ventilated critically ill patients.


METHODS
This is a prospective observational study. From October 1 to December 31, 2017, patients admitted to the intensive care unit with CVP monitoring and controlled mechanical ventilation were screened for enrolment. Echocardiographic parameters, including the TAPSE, mitral annular plane systolic excursion (MAPSE), left ventricular ejection fraction (LVEF), and internal diameter of inferior vena cava (dIVC), and haemodynamic parameters, including the CVP, were collected.


RESULTS
Seventy-four patients were included. Thirty-one were included in the low LVEF (< 55%) group, and 43 were included in the high LVEF (≥55%) group. In the high LVEF group, the TAPSE and CVP were not correlated (r = - 0.234, P = 0.151). In the low LVEF group, partial correlation analysis indicated that the TAPSE and CVP were correlated (r = - 0.516, P = 0.006), and multivariable linear regression analysis indicated that the TAPSE was independently associated with the CVP (standard coefficient: - 0.601, p < 0.001). Additionally, in the low LVEF group, a ROC analysis showed that the area under the curve of the TAPSE for the detection of CVP greater than 8 mmHg was 0.860 (95% confidence interval: 0.730-0.991; P = 0.001). The optimum cut-off value was 1.52 cm, which resulted in a sensitivity of 75.0%, a specificity of 86.7%, a positive predictive value of 84.6% and a negative predictive value of 77.8%.


CONCLUSIONS
The TAPSE is inversely correlated with the CVP in mechanically ventilated critically ill patients who have a LVEF less than 55%.
['Zhang|Hongmin|H|', 'Wang|Xiaoting|X|', 'Chen|Xiukai|X|', 'Zhang|Qing|Q|', 'Liu|Dawei|D|http://orcid.org/0000-0002-7514-3087']
D000368:Aged D002496:Central Venous Pressure D016638:Critical Illness D004452:Echocardiography D005260:Female D006801:Humans D008297:Male D008875:Middle Aged D011446:Prospective Studies D012372:ROC Curve D012121:Respiration, Artificial D013318:Stroke Volume D013599:Systole D014261:Tricuspid Valve D016278:Ventricular Function, Right
Central venous pressure Critically ill Echocardiography Tricuspid annulus plane systolic excursion