Acute renal failure with severe loin pain and patchy renal ischemia after anaerobic exercise

Table 4 Comparison of characteristics in acute renal failure with severe loin pain and patchy renal ischemia after anaerobic exercise with and without renal hypouricemia, n (%)

	Renal hypouricemia	No renal hypouricemia
Number of patients	31	26
Age (yr)	21.6 ± 10.7 (11-65)	22.7 ± 8.0 (13-49)
Sex (male)	28/31 (90)	24/26 (92)
fever	7/31 (23)	12/26 (46)
Nausea/vomiting	22/31 (71)	14/26 (54)
Loin pain	21/31 (68)	15/26 (58)
Abdominal pain	14/31 (45)	18/26 (69)
High blood pressure on admission	6/21 (28.6)	4/9 (44.4)
High CRP on admission	9/14 (64.3)	4/4 (100)
Serum creatinine on admission (mg/dL)	4.53 ± 2.04 (N = 30)	5.24 ± 2.81 (N = 26)
Serum CK on admission (IU/L)	261 ± 304 (N = 26)	269 ± 225 (N = 21)
Kidney CT patchy findings	9/15 (60)	23/25 (92)
Hemodialysis	7/29 (24)	2/25 (8)
Exercise	29/31 (94)	19/26 (73)
Recurrence of ALPE	11/28 (39)	3/26 (12)
Days of renal failure improvement	17.9 ± 8.3 (N = 26)	16.1 ± 15.3 (N = 10)
premedication	2/20 (10)	3/6 (50)

Values are expressed with mean ± standard deviation with (range) or the number of positive cases with (percent). ALPE: Acute renal failure with severe loin pain and patchy renal ischemia after anaerobic exercise; CRP: C-reactive protein; CK: Creatinine kinase, CT: Computed Tomography; N: Number of patients.