382. Analysis of Factors Influencing Urinary Metabolite Concentrations, Including Adjustment for Urinary Flow Rate, and Creatinine or Dissolved Solids

2000 ◽  
Author(s):  
L. Wilder ◽  
M. Morgan ◽  
D. Kalman ◽  
R. Dills
Keyword(s):  
Flow Rate ◽  
Urinary Flow Rate ◽  
Urinary Metabolite ◽  
Urinary Flow ◽  
Dissolved Solids ◽  
Factors Influencing ◽  
Metabolite Concentrations

Impact Of Transurethral Resection Of Prostate On International Prostate Symptom Score And Peak Urinary Flow Rate

2020 ◽  
Vol 16 (1) ◽  
pp. 11-15
Author(s):  
Md Waliul Islam ◽  
Md Abul Hossain ◽  
Md Nurul Hooda ◽  
Kazi Rafiqul Abedin ◽  
Husne Ara
Keyword(s):  
Flow Rate ◽  
Transurethral Resection ◽  
Urine Volume ◽  
T Test ◽  
Urinary Symptoms ◽  
Urinary Flow Rate ◽  
Transurethral Resection Of Prostate ◽  
Urinary Flow ◽  
Paired Student ◽  
The Impact

Objectives: To evaluate urinary symptoms and quality of life in patient with BPH before and after TURP. To determine the impact of TURP on the urinary symptoms (IPSS) and peak urinary flow rate. Methods: This study is prospective study carried out between 2010 and 2011 in the department of Urology, National Institute of Kidney Diseases & Urology. Total 102 cases were selected purposively according to selection criteria. Each patient was observed and followed up at 8 weeks (1st visit), 16 weeks (2nd visit) 24 weeks (3rd visit) after transurethral resection of prostate (TURP). IPSS score, QOL score also recorded and uroflowmetry was done to see the peak urinary flow rate (Qmax) of urine and voiding time. USG was done to see post voidal residual urine volume and DRE also done in selected cases. Data was complied and statistical analysis were done using computer based software, Statistical Package for Social Science (SPSS), using paired ‘t’ test. A P value <0.05 was taken as significance. Results: Before TURP, IPSS range 17-25 and mean 21.61+2.43, after TURP, range 0-7 and mean 4.27+1.71). Hence a significant improvement of IPSS was found from 2 months to 6 months follow up after TURP. The change was tested using “paired student ‘t’ test”. Before TURP Qmax range 7-12.2 and mean was 9.96+1.69, which became range 18-25 and mean was 22.61+2.28 after TURP and therefore change of mean Qmax was 12.64+2.69. The change was tested using “paired student ‘t’ test”. The change was found significant (P<0.001). Conclusion: Transurethral resection of prostate resolves obstructive symptoms, rapid improvement of urinary flow rate Bangladesh Journal of Urology, Vol. 16, No. 1, Jan 2013 p.11-15

scholarly journals Variability of Urinary Creatinine in Healthy Individuals

2021 ◽  
Vol 18 (6) ◽  
pp. 3166
Author(s):  
Gerd Sallsten ◽  
Lars Barregard
Keyword(s):  
Flow Rate ◽  
Excretion Rate ◽  
Time Of Day ◽  
Urinary Flow Rate ◽  
Urinary Flow ◽  
Diurnal Variability ◽  
Creatinine Excretion ◽  
Blood Samples ◽  
Urinary Creatinine ◽  
Creatinine Excretion Rate

Many urinary biomarkers are adjusted for dilution using creatinine or specific gravity. The aim was to evaluate the variability of creatinine excretion, in 24 h and spot samples, and to describe an openly available variability biobank. Urine and blood samples were collected from 60 healthy non-smoking adults, 29 men and 31 women. All urine was collected at six time points during two 24 h periods. Blood samples were also collected twice and stored frozen. Analyses of creatinine in urine was performed in fresh urine using an enzymatic method. For creatinine in urine, the intra-class correlation (ICC) was calculated for 24 h urine and spot samples. Diurnal variability was examined, as well as association with urinary flow rate. The creatinine excretion rate was lowest in overnight samples and relatively constant in the other five samples. The creatinine excretion rate in each individual was positively correlated with urinary flow rate. The creatinine concentration was highest in the overnight sample and at 09:30. For 24 h samples the ICC was 0.64, for overnight samples it was 0.5, and for all spot samples, it was much lower. The ICC for urinary creatinine depends on the time of day of sampling. Frozen samples from this variability biobank are open for researchers examining normal variability of their favorite biomarker(s).

MEASUREMENT OF URINARY FLOW RATE USING ULTRASOUND IN YOUNG BOYS AND INFANTS

2001 ◽  
Vol 166 (3) ◽  
pp. 1058-1061 ◽  
Author(s):  
KATJA P. WOLFFENBUTTEL ◽  
DIRK J. KOK ◽  
RON van MASTRIGT ◽  
ESTHER van den BERG ◽  
RIEN J.M. NIJMAN
Keyword(s):  
Flow Rate ◽  
Urinary Flow Rate ◽  
Urinary Flow

Effects of vasopressin administration on diuresis of water immersion in normal humans

1981 ◽  
Vol 51 (6) ◽  
pp. 1384-1387 ◽  
Author(s):  
M. Epstein ◽  
A. G. DeNunzio ◽  
R. D. Loutzenhiser
Keyword(s):  
Antidiuretic Hormone ◽  
Flow Rate ◽  
Water Immersion ◽  
Normal Subjects ◽  
Urinary Flow Rate ◽  
Urinary Flow ◽  
Relative Role ◽  
Normal Humans

Although previous studies have demonstrated that water immersion to the neck (NI) results in a significant diuresis, the mechanisms are incompletely delineated. Because recent studies in our laboratory have demonstrated that NI is associated with a suppression of antidiuretic hormone (ADH), it is possible that such a suppression mediates the encountered diuresis. The present study was undertaken to assess more directly the relative role of ADH suppression by determining the effects of vasopressin administration. Six hydrated normal subjects were studied on two occasions while undergoing 6 h of NI. During the second NI study, aqueous vasopressin (20 mU/h) was infused for the initial 4 h of study (NI + vasopressin). NI resulted in a significant increase in urinary flow rate beginning during hour 1 and persisting throughout NI. In contrast, during NI + vasopressin, the anticipated diuresis was abolished throughout the 4 h of vasopressin administration. Cessation of vasopressin administration during the final 2 h of NI + vasopressin resulted in a marked and prompt diuresis. The present observations are consistent with the formulation that ADH suppression participates importantly in mediating the diuresis of NI in hydrated normal subjects.

scholarly journals Average urinary flow rate and its association with handgrip strength

2020 ◽  
pp. 1-7
Author(s):  
Hao-Tse Chiu ◽  
Tung-Wei Kao ◽  
Tao-Chun Peng ◽  
Yuan-Yuei Chen ◽  
Wei-Liang Chen
Keyword(s):  
Flow Rate ◽  
Handgrip Strength ◽  
Urinary Flow Rate ◽  
Urinary Flow

Renal effects of atrial natriuretic factor in primate

1986 ◽  
Vol 251 (6) ◽  
pp. F1049-F1054
Author(s):  
J. J. Bourgoignie ◽  
G. Gavellas ◽  
K. H. Hwang
Keyword(s):  
Flow Rate ◽  
Renal Plasma Flow ◽  
Papio Hamadryas ◽  
Urinary Flow Rate ◽  
Base Line ◽  
Urinary Flow ◽  
Filtration Fraction ◽  
Excretion Rates ◽  
Solute Excretion ◽  
Single Kidney

Baboons (Papio hamadryas) were infused intravenously with a nonhypotensive dose (0.1 microgram X min-1 X kg-1) of synthetic human atriopeptin III (ANF) for 60 min. Throughout the infusion in intact animals, ANF significantly increased glomerular filtration rate (GFR) (clearance of inulin) (P less than 0.001), and, to a lesser extent, total renal plasma flow (RPF) [clearance of p-aminohippurate (PAH)] (P less than 0.02) and filtration fraction (P less than 0.02). Concomitant increases in urinary flow rate and in the excretion of osmoles, sodium, chloride, potassium, phosphorus, and calcium were highly significant (less than 0.001 for all). To minimize the hemodynamic impact of ANF on GFR, the same dose of ANF was infused into the same animals 8 wk after uninephrectomy. Base-line single-kidney GFR was then 50% increased. With ANF infusion RPF increased significantly (P less than 0.02), as in intact baboons, but ANF then had only marginally significant effects on GFR (P = 0.06) and insignificant effects on filtration fraction (P = 0.17). Nevertheless, the changes in urinary flow rate and solute excretion rates were highly significant (P less than 0.001 to less than 0.007). In both groups, all changes developed rapidly, were sustained during the infusion of ANF, and were readily reversible within 15 to 30 min of cessation of ANF infusion. The data dissociate in uninephrectomized primate the effects of ANF on water and solute excretion from those on GFR and filtration fraction. Both in intact and in uninephrectomized baboons, the changes in water and solute excretion were associated with small but significant changes in RPF.

Sign in / Sign up

Export Citation Format

Share Document