Table 1.

Cardiovascular parameters in patients with different risk stratification APE.

Groups	PTd(cm)	AAd(cm)	rPA	RVd(cm)	LVd(cm)	rRL
Low-risk	2.8 + 0.3 (2.2–3.4)	3.1 + 0.2 (2.9–3.2)	1.1 + 0.1 (1.0–1.3)	4.1 + 0.7 (3.1–5.2)	3.2 + 0.5 (2.1–3.8)	1.3 + 0.4 (1.0–2.1)
High-risk	3.5 + 0.4 (2.9–4.2)	3.1 + 0.2 (2.6–3.4)	0.9 + 0.1 (0.7–1.2)	3.5 + 0.5 (2.5–4.2)	4.0 + 0.7 (2.9–5.6)	0.9 + 0.1 (0.6–1.0)
t value	5.13	0.61	6.18	3.02	2.90	3.54
P value	<0.01	0.55	<0.01	0.01	0.01	0.01

Note: APE, acute pulmonary embolism; PTd, diameter of pulmonary trunk; AAd, diameter of ascending aorta; rPA, ratio of PTd to AAd; RVd, diameter of right ventricle; LVd, diameter of left ventricle; rRL, ratio of the RVd to LVd.