AMBULATORY EVALUATION OF NEPHROLITHIASIS - CLASSIFICATION, CLINICAL PRESENTATION AND DIAGNOSTIC-CRITERIA
AMBULATORY EVALUATION OF NEPHROLITHIASIS - CLASSIFICATION, CLINICAL PRESENTATION AND DIAGNOSTIC-CRITERIA
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DOI:
10.1016/0002-9343(80)90495-7
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发表时间:
1980-01-01
影响因子:
5.9
通讯作者:
PETERS, P
中科院分区:
文献类型:
--
作者:
PAK, CYC;BRITTON, F;PETERS, P
Using the ambulatory protocol previously described, 241 patients with nephrolithiasis were evaluated. They could be categorized into 10 groups from the results obtained. Absorptive hypercalciuria type I (87% male) comprised 24.5% and was characterized by normocalcemia, normal fasting urinary Ca (< 0.11 mg/100 ml glomerular filtration), an exaggerated urinary Ca following an oral Ca load (> 0.20 mg/mg creatinine), normal urinary cyclic[c]AMP (< 5.4 nmol/100 ml glomerular filtration) and serum parathyroid hormone (PTH), and hypercalciuria (> 200 mg/day during a calcium- and sodium-restricted diet). Absorptive hypercalciuria type II (58% male) accounted for 29.8%; its biochemical features were the same as those for absorptive hypercalciuria type I, except for normocalciruia during a restricted diet and low urine volume (1.42 .+-. 0.55 SD l/day). Renal hypercalciuria (56% male), disclosed in 8.3%, was represented by normocalcemia and high values for fasting urinary Ca (0.160 .+-. 0.054 mg/100 ml glomerular filtration), urinary cAMP (6.80 .+-. 2.10 nmol/100 ml glomerular filtration) and serum PTH. Primary hyperparathyroidism (57% female), accounted for 5.8%, typically included hypercalcemia, hypophosphatemia, hypercalciuria and high urinary cAMP. Hyperuricosuric calcium urolithiasis (100% male)comprised 8.7%, and was characterized by hyperuricosuria (776 .+-. 164 mg/day) and urinary pH exceeding pK for uric acid (5.91 .+-. 0.33). In enteric hyperoxaluria (60% female), encountered in 2.1% of cases, urinary oxalate was increased (6.29 .+-. 13.2 mg/day). Noncalcium-containing stones were found in 2.1% of the patients with uric acid lithiasis (100% male) and in another 2.1% of the patients with infection lithiasis (60% female). These conditions were typified by low urinary pH (5.29 .+-. 0.12) and high urinary pH (6.69 .+-. 1.16), respectively. Renal tubular acidosis was found in one patient (male, 0.4%). In 10.8% of the patients (81% male), no metabolic abnormality could be found, although urine volume was low (1.41 .+-. 0.51 l/day). Hypercalciuria could not be differentiated between absorptive hypercalciuria and renal hypercalciuria in 5.4% of the patients. This ambulatory protococol disclosed a physiologic disturbance in nearly 90% of the cases and provided a definitive diagnosis in 95% of the patients.