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

Table 3

Biochemical data and electrocardiographic parameters of 22 patients before and after pheochromocytoma treatment.

	Before treatment	After treatment	P value
Systolic blood pressure (mmHg)	149.28 ± 23.07	117.33 ± 13.16	<0.001
Diastolic blood pressure (mmHg)	87.72 ± 14.21	74.22 ± 13.34	0.006
Fasting glucose (mg/dl)	109.41 ± 36.79	83.95 ± 11.75	0.002
Triglycerides (mg/dl)	106 ± 42.05	95.06 ± 37.39	0.291
Cholesterol (mg/dl)	195.93 ± 53.83	194.07 ± 52.72	0.878
Sodium (mmol/l)	142,09 ± 2.62	141.68 ± 2.59	0.638
Potassium (mmol/l)	4.36 ± 0.53	4.29 ± 0.44	0.512
Calcium(mg/dl)	9.21 ± 1.09	9.15 ± 0.88	0.783
Phosphate (mg/dl)	3.86 ± 1.03	3.48 ± 0.82	0.188
Metanephrine (μg/24-hours)	3808.55 ± 5491.49	136.76 ± 83.28	0.032
Normetanephrine (μg/24-hours)	5979.41 ± 8123.95	266.53 ± 108.83	<0.001
3-methoxytyramine (μg/24-hours)	373.19 ± 206.25	196.10 ± 131.74	0.047
P wave (msec)	101.60 ± 18.43	96.80 ± 18.08	0.350
PR (msec)	145.06 ± 25.68	157.56 ± 33.10	0.007
QRS (msec)	84.20 ± 17.26	85.50 ± 12.93	0.705
QTc (msec)	425.20 ± 30.72	405.40 ± 29.76	0.019
Heart rate (bpm)	78.81 ± 15.56	70.86 ± 11.66	0.067
Presence of U wave, No. (%)	20 (90.9)	9 (42.9)	0.002
Number of U wave in 12 lead ECG, median (range)	3 (0-9)	0 (0-3)	<0.001
Antihypertensive therapy, No. (%)	1.67 ± 1.46	0.59 ± 0.71	0.007

P values are for paired-samples test.
P values is for McNemar test.
P values are for Wilcoxon signed rank test.