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Table 2 Main clinical and biochemical data at presentation

From: The clinical and imaging presentation of acute "non complicated" pyelonephritis: A new profile for an ancient disease

  Single
lesions
Multiple lesions p Simple lesions Abscessed
lesions
p All cases
SCr (mg/dL) 1.03 ± 0.43 0.89 ± 0.28 0.07° 0.95 ± 0.37 0.89 ± 0.22 0.26° 0.92 ± 0.32
CRP (mg/dL) 10.3
(1.3-39)
12.5
(0.2-36)
0.41* 10.6 (0.3-39) 13.3
(0.2-31)
0.14* 12.1
(0.2-39)
WBC (n/mm3) 13042 ± 4128 12397 ± 4139 0.49° 12103 ± 4185 13194 ± 3990 0.16° 12528 ± 4127
Positive urinary cultures 12.5% 26.3% 0.25^ 19.4% 30% 0.28^ 23.5%
Positive hemocultures 0% 15.8% 0.004^ 16.7% 6.4% 0.014^ 12.6%
Fever 39
(36-40)
39
(36-41)
0.12* 39
(36-40)
39
(36-41)
0.17* 39
(36-41)
Flank pain - tenderness 87.5% 88.4% 1^ 84.7% 93.6% 0.24^ 88.2%
Lower urinary tract symptoms 62.5% 43.2% 0.14^ 41.7% 55.3% 0.20^ 47.1%
Antibiotic treatment in the last 3 days 54% 39% 0.31^ 43.1% 40.4% 0.33^ 42%
Time between symptoms and diagnosis 3 (1-14) 3 (1-30) 0.54* 3 (1-30) 3 (1-20) 0.36* 3 (1-30)
Tetrad (fever, pain, lower UTI, positive cultures) 8.3% 11.7% 0.92^ 5.6% 19.6% 0.039^ 11%
Eligible for a trial (tetrad and no recent antibiotic therapy) 4.2% 9.5% 0.67^ 4.2% 14.9% 0.08^ 8.4%
  1. UTI: Urinary tract infection
  2. *Mann-Whitney U test
  3. °Student's t-test
  4. ^Pearson's chi-square test