Electrical Remodeling of Ventricular Repolarization Abnormality after Treatment in Pheochromocytoma: U Wave Finding in a Retrospective Analysis

Table 4

Linear correlations of U wave amount in 12-lead ECG and tumor size.

	Beta	r^2	P value
Number of U wave
Systolic blood pressure (mmHg)	0.494	0.244	0.031
Diastolic blood pressure (mmHg)	0.624	0.390	0.004
Fasting glucose (mg/dl)	0.122	0.015	0.599
Metanephrine μg/24-hours	0.557	0.333	0.015
Normetanephrine μg/24-hours	0.404	0.163	0.108
3-methoxytyramine μg/24-hours	0.654	0.428	0.006
P wave (msec)	-0.127	0.016	0.628
PR (msec)	-0.065	0.004	0.791
QRS (msec)	0.280	0.078	0.232
QTc (msec)	-0.001	1.605^−6	0.996
Heart rate (bpm)	0.037	0.001	0.872
Tumor size
Systolic blood pressure (mmHg)	0.081	0.007	0.765
Diastolic blood pressure (mmHg)	0.112	0.013	0.679
Fasting glucose (mg/dl)	0.077	0.005	0.760
Metanephrine (μg/24-hours)	0.615	0.378	0.019
Normetanephrine (μg/24-hours)	0.893	0.798	<0.001
3-methoxytyramine (μg/24-hours)	0.792	0.627	0.001
P wave (msec)	0.065	0.004	0.818
PR (msec)	0.093	0.009	0.722
QRS (msec)	-0.022	4.759^−4	0.932
QTc (msec)	-0.061	0.004	0.809
Heart rate (bpm)	0.238	0.057	0.341
Presence of U wave	0.655	0.429	0.003