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Urine and stone analysis for the investigation of the renal stone former: a consensus conference.

ABSTRACT: The Consensus Group deliberated on a number of questions concerning urine and stone analysis over a period of months, and then met to develop consensus. The Group concluded that analyses of urine and stones should be routine in the diagnosis and treatment of urinary stone diseases. At present, the 24-h urine is the most useful type of urine collection, and accepted methods for analysis are described. Patient education is also important for obtaining a proper urine sample. Graphical methods for reporting urine analysis results can be helpful both for the physician and for educating the patient as to proper dietary changes that could be beneficial. Proper analysis of stones is also essential for diagnosis and management of patients. The Consensus Group also agreed that research has shown that evaluation of urinary crystals could be very valuable, but the Group also recognizes that existing methods for assessment of crystalluria do not allow this to be part of stone treatment in many places.

SUBMITTER: Williams JC

PROVIDER: S-EPMC7867533 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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Urine and stone analysis for the investigation of the renal stone former: a consensus conference.

Williams James C JC Gambaro Giovanni G Rodgers Allen A Asplin John J Bonny Olivier O Costa-Bauzá Antonia A Ferraro Pietro Manuel PM Fogazzi Giovanni G Fuster Daniel G DG Goldfarb David S DS Grases Félix F Heilberg Ita P IP Kok Dik D Letavernier Emmanuel E Lippi Giuseppe G Marangella Martino M Nouvenne Antonio A Petrarulo Michele M Siener Roswitha R Tiselius Hans-Göran HG Traxer Olivier O Trinchieri Alberto A Croppi Emanuele E Robertson William G WG

Urolithiasis 20201013 1

The Consensus Group deliberated on a number of questions concerning urine and stone analysis over a period of months, and then met to develop consensus. The Group concluded that analyses of urine and stones should be routine in the diagnosis and treatment of urinary stone diseases. At present, the 24-h urine is the most useful type of urine collection, and accepted methods for analysis are described. Patient education is also important for obtaining a proper urine sample. Graphical methods for r ...[more]

PMID: 33048172

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Project description:BACKGROUND:Our purpose was to study the relationship of the 3 different types of endoscopic calcifications of the renal papilla (Randall's plaque, intratubular calcification, papillary crater) with the type of stone and urine analysis. METHODS:This prospective study examined 41 patients (age range: 18 to 80?years) who received retrograde intrarenal surgery (RIRS) for renal lithiasis (mean stone size: 15.3?±?7.2?mm). The renal papilla injuries were endoscopically classified as Randall's plaque, intratubular calcification, or papillary crater. Calculi were classified as uric acid, calcium oxalate monohydrate (COM; papillary and cavity), calcium oxalate dihydrate (COD), or calcium phosphate (CP). A 24?h urine analysis of calcium, oxalate, citrate, phosphate, and pH was performed in all patients. The relationship of each type of papillary injury with type of stone and urine chemistry was determined. Fisher's exact test and Student's t-test were used to determine the significance of relationships, and a p value below 0.05 was considered significant. RESULTS:The most common injury was tubular calcification (78%), followed by Randall's plaque (58%), and papillary crater (39%). There was no significant relationship of Randall's plaque with type of stone. However, endoscopic intratubular calcification (p =?0.025) and papillary crater (p =?0.041) were more common in patients with COD and CP stones. There were also significant relationships of papillary crater with hypercalciuria (p =?0.036) and hyperoxaluria (p =?0.024), and of Randall's plaque with hypocitraturia (p =?0.005). CONCLUSIONS:There are certain specific relationships between the different types of papillary calcifications that were endoscopically detected with stone chemistry and urine analysis. COD and CP stones were associated with endoscopic tubular calcifications and papillary craters. Hypercalciuria was associated with tubular calcification, and hypocitraturia was associated with Randall's plaque.

Project description:BackgroundControversy exists regarding many aspects of decision making pertaining to same-day versus staged bilateral TKA (BTKAs), including patient selection, perioperative management decisions, and other important choices.Questions/purposesIn the absence of suitable randomized trials, we sought to determine areas of consensus among national experts on the following questions: (1) What are the comparative risks of same-day BTKAs compared with unilateral TKA (UTKA) and staged BTKAs? (2) Who should be considered an appropriate candidate for same-day BTKAs? (3) What constitutes appropriate workup and perioperative management for BTKAs? (4) What is the optimal time between procedures if same-day BTKAs are not deemed appropriate? (5) Are there orthopaedic or rehabilitation considerations for BTKAs that might outweigh medical contraindications?MethodsIn the setting of a consensus conference of national experts in orthopaedic surgery, anesthesiology, perioperative medicine, and epidemiology, the major questions surrounding same-day BTKAs were addressed by using an extensive literature review and the modified Delphi process. The process concluded with a meeting of participants and formulation of consensus statements.ResultsEighty-one percent of participants agreed that BTKAs are more invasive and complex procedures associated with increased risk for perioperative adverse events compared with UTKA in an unselected group of patients. The consensus group agreed that physicians and hospitals should consider using more restrictive patient selection criteria and exclude those with a modified cardiac risk index greater than 3 to mitigate the potentially increased risk. The majority of the group agreed that perioperative assessment and management should reflect the higher level of acuity of same-day BTKAs. Eighty-one percent of participants agreed that if a patient is not deemed a candidate for same-day BTKAs, a second TKA should be scheduled no sooner than 3 months after the first. The entire group agreed that when there is a conflict between the orthopaedic need and the medical adequacy of same-day BTKAs, the medical concern for the patient's safety should prevail over the orthopaedic need.ConclusionsExperts perceived that same-day BTKAs increase medical risk, and thus a systematic approach to the management of patients should be taken to minimize complications.

Dataset Information

Urine and stone analysis for the investigation of the renal stone former: a consensus conference.

Publications

Urine and stone analysis for the investigation of the renal stone former: a consensus conference.

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