Table 1.

Mean and Standard Deviation of Each Level of Measurement by Transthoracic Echocardiography and Transesophageal Echocardiography

Measurement Level	TEE	TTE	p
Sinus level, cm, mean (SD)	3.51 (0.40)	3.49 (0.43)	0.7
Sinotubular junction level, cm, mean (SD)	3.01 (0.40)	3.04 (0.42)	0.4
1 cm above sinotubular junction, cm, mean (SD)	3.24 (0.45)	3.28 (0.45)	0.1
Max diameter of ascending aorta, cm, mean (SD)	3.58 (0.56)	3.56 (0.53)	0.6
Length of proximal aorta, cm, mean (SD)	7.18 (1.21)	6.67 (1.19)	0.02

P evaluates differences between transesophageal echocardiography (TEE( and transthoracic echocardiography (TTE( (paired t test)