Activity measurements of calcium, sodium, potassium, and chloride after equilibrium dialysis used to show lack of evidence for protein interference with calcium electrodes.

1987 ◽  
Vol 33 (10) ◽  
pp. 1811-1813 ◽  
Author(s):  
J Thode ◽  
J C Boyd ◽  
J H Ladenson
Keyword(s):  
Renal Stone ◽  
Equilibrium Dialysis ◽  
Stone Disease ◽  
Ionized Calcium ◽  
Albumin Concentration ◽  
Correction Algorithm ◽  
Sodium Potassium ◽  
Activity Measurements ◽  
Source Of Error ◽  
Donnan Ratio

Abstract We measured the activity of Ca2+, Na+, K+, and Cl- with ion-selective electrodes after equilibrium dialysis of solutions with different albumin concentrations. The calculated Donnan ratio was the same for all ions in the same solution and increased with the albumin concentration, as predicted by the Donnan theory. The Donnan distribution ratio for Ca2+ was similar, as determined with instruments from three different manufacturers. For healthy subjects and patients with renal stone disease, we did not find any correlation between serum concentrations of ionized calcium and albumin. The discordance between measured ionized calcium and albumin-corrected total calcium depended on the correction algorithm we utilized. The difficulties of absolutely proving or disproving a protein error in these measurements are discussed, but our data are not consistent with protein being a source of error in measurements of ionized calcium.

Use of non-contrast computed tomography determined urinary stone fragility in predicting the outcome of extracorporeal shockwave lithotripsy treatment: a single-center study

2020 ◽  
Vol 14 (2) ◽  
pp. 59-63
Author(s):  
Athar Hameed ◽  
Khazir Hayyat Gondal
Keyword(s):  
Shock Waves ◽  
Renal Stone ◽  
Plain Film ◽  
Renal Stones ◽  
Renal Calculus ◽  
Urinary Stone ◽  
Stone Disease ◽  
Urinary Stones ◽  
Fisher Exact Test

Background: Renal stones represent a common urological pathology where standard treatment advised is ESWL in current practice. However, NCCT based determination of stone fragility may help to predict the outcome of ESWL treatment, hence optimizing its clinical use. Therefore, this study evaluated the role of NCCT determined urinary stone fragility in predicting the outcome of ESWL treatment in local clinical settings. Patients and methods: One hundred patients with single renal calculus of 0.6-2 cm in size were included. NCCT based determination of stone fragility in HU units was done for all patients. Patients were then subjected to ESWL, with a maximum of 3000 shock waves given per ESWL session. Plain film and/or ultrasonography was used to monitor ESWL treatment progress with a final NCCT evaluation at 12 weeks to determine the clearance of the calculi for each patient. Association of NCCT based stone fragility and outcome of ESWL was statistically analyzed using Fisher exact test. Results: The mean age of the patients was 37.7 ± 10.9 years with 54% being male. Decreasing stone fragility on NCCT (high = <500HU, moderate = 500-1000HU, and high = 1000HU) required more number and intensity of ESWL sessions (1-2 visits and 3000-6000 shock waves for high stone fragility group, 3-5 visits and 7000-18000 shock waves for the moderate group, and 6 visits and >18000 shock waves for low fragility group, respectively) necessary for clearance of urinary stones (p<0.001). In 98% of patients, the clearance of urinary stones was excellent. Conclusion: Renal stone patients with NCCT determined high and moderate stone fragility show an optimal response after ESWL treatment, whereas, for low fragility renal stones attenuative treatment like percutaneous nephrolithotomy and/or ureteroscopy should be considered instead of ESWL. This approach can enable patient stratification before ESWL therapy ensuring better clinical management of the renal stone disease.

Diagnostic and therapeutic aspects of recurrent renal stone disease (duplicate)

2009 ◽  
Vol 13 (1) ◽  
Author(s):  
Anthony Meyers ◽  
Natalie Whalley ◽  
Maria Martins
Keyword(s):  
Renal Stone ◽  
Stone Disease ◽  
Renal Stone Disease

Clinical Effects of Prophylactic Dietary Treatment of Renal Stone Disease in Japan

Urolithiasis ◽  
1989 ◽  
pp. 753-755
Author(s):  
M. Iguchi ◽  
Y. Ishikawa ◽  
Y. Katayama ◽  
M. Kodama ◽  
M. Takada ◽  
...  
Keyword(s):  
Renal Stone ◽  
Dietary Treatment ◽  
Stone Disease ◽  
Clinical Effects ◽  
Renal Stone Disease

scholarly journals Nontypable Haemophilus influenzae Septicemia and Urinary Tract Infection Associated with Renal Stone Disease

2018 ◽  
Vol 12 (1) ◽  
pp. 243-247
Author(s):  
Marianne Stærk ◽  
Sara A. Tolouee ◽  
Jens J. Christensen
Keyword(s):  
Urinary Tract Infection ◽  
Antibiotic Resistance ◽  
Urinary Tract ◽  
Tract Infection ◽  
Haemophilus Influenzae ◽  
Renal Stone ◽  
Stone Disease ◽  
Upper Respiratory Tract ◽  
Renal Stone Disease ◽  
Tract Infections

Introduction: Haemophilus influenzae commonly causes upper respiratory tract infections and has only rarely been reported etiology of urinary tract infections. Since the introduction of the Haemophilus influenzae b (Hib) vaccine, non-typable haemophilus species now cause the majority of invasive disease in Europe. Case Report: We report a case of an adult man with non-typable Haemophilus influenzae septicemia, urinary tract infection and bilateral renal stone disease. The patient presented with right sided flank pain and a CT scan showed bilateral renal stones and a right sided ureteral stone causing obstruction. Results and Discussion: Haemophilus influenzae was identified in blood and urine and despite a tendency of increasing antibiotic resistance among Haemophilus influenzae, our strain was susceptible to all antibiotics tested. Treatment consisted of 3 days of intravenous cefuroxime, insertion of a right sided JJ ureteric stent and 5 days of peroral ciprofloxacin after discharge. Physicians and microbiologists should be aware of Haemophilus influenzae as a possible urinary tract pathogen, especially when urinary tract abnormalities are present, and take the risk of antibiotic resistance into consideration at initial treatment.

scholarly journals Epidemiology of paediatric renal stone disease: a 22-year single centre experience in the UK

2017 ◽  
Vol 18 (1) ◽  
Author(s):  
Naomi Issler ◽  
Stephanie Dufek ◽  
Robert Kleta ◽  
Detlef Bockenhauer ◽  
Naima Smeulders ◽  
...  
Keyword(s):  
Renal Stone ◽  
Stone Disease ◽  
Single Centre ◽  
Renal Stone Disease ◽  
Single Centre Experience ◽  
The Uk

scholarly journals Metabolic evaluation of Crioulo horses participating in competitions of 750 km

2013 ◽  
Vol 33 (12) ◽  
pp. 1471-1477 ◽  
Author(s):  
Lorena Alvariza Amaral ◽  
Millie Marchiori ◽  
Charles Ferreira Martins ◽  
Marcio Nunes Correa ◽  
Carlos Eduardo Wayne Nogueira
Keyword(s):  
Inflammatory Process ◽  
Ionized Calcium ◽  
Metabolic Responses ◽  
Total Calcium ◽  
Blood Cell Count ◽  
Metabolic Evaluation ◽  
Sodium Potassium ◽  
Blood Samples ◽  
Mean Values ◽  
The Mean

The Crioulo breed of horses performs in one of the most physically demanding equestrian competitions, the Marcha de Resistência, which is a contest in which the horses run 750 km in 15 days. The study's aim was to characterize the metabolic responses during this period. We evaluated eleven Crioulo horses in the competition, specifically, two males and nine females. Blood samples were collected 24 hours before the contest and on the 4th, 9th, 11th, 14th and 15th days of competition. We evaluated CK, AST, LDH, glucose, lactate, urea, creatinine, sodium, potassium, chloride, magnesium, total calcium, ionized calcium, total protein, hematocrit and the white blood cell count. At the end of the competition, the mean values of serum AST were 1151±358 IU/ L the mean LDH values were 7418±1695 IU/L and CK was 13,867±3998UI /L. There was a significant increase in urea, creatinine and lactate (p<0.0001). A decrease in the mean values of chloride, sodium, potassium, and total and ionized calcium was observed (p≤0.0002). An evaluation of the total leukocytes and segmented neutrophils (p≤0.0002) revealed their increased values, and decreased values were observed for hematocrit, plasma protein and total lymphocytes (p≤0.0003). The values of glucose, on average, remained constant. Based on these data, we conclude that the Marcha de Resistência competition necessitated a high muscular demand and the depletion of energy and electrolytes, suggesting an inflammatory process in the animals evaluated.

Effect of Heparin on Corning 288 Measurement of Sodium, Potassium, and Ionized Calcium

1992 ◽  
Vol 23 (4) ◽  
pp. 249-252
Author(s):  
Anthony Schapera ◽  
Gary Niebaum
Keyword(s):  
Ionized Calcium ◽  
Sodium Potassium

Renal Stone Disease and Obesity: What is Important for Urologists and Nephrologists?

Renal Failure ◽  
2012 ◽  
Vol 34 (10) ◽  
pp. 1348-1354 ◽  
Author(s):  
Mohamed H. Ahmed ◽  
Hassan T. Ahmed ◽  
Atif A. Khalil
Keyword(s):  
Renal Stone ◽  
Stone Disease ◽  
Renal Stone Disease
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