scholarly journals Diagnostic accuracy of spot urinary protein/creatinine ratio for proteinurea in pregnancy induced hypertension

Author(s):  
Sami Jan ◽  
Chachoo Javaid ◽  
Nighat Firdous

Background: Hypertensive disorders are the most common medical complications of pregnancy with an incidence of 12-22% and are rampant globally. To assess the diagnostic accuracy of spot urinary protein-creatinine ratio keeping 24 hr urinary protein as gold standard in pregnancy induced hypertension.Methods: Spot urinary protein-creatinine ratio was determined in a mid-stream urine sample. 24 hours, urine protein was measured. The correlation between the spot urinary protein-creatinine ratio and 24-hour urine protein amount was done. Sensitivity, specificity, positive predictive value and negative predictive value along with diagnostic accuracy was calculated from data.Results: There was a strong correlation between the spot urinary protein-creatinine ratio and 24-hour urine protein excretion (pearson’s correlation coefficient r = 0.824; P <0.0001). The optimal spot P/C ratio cut off point was 0.33, for 300 mg/24 hours of protein excretion, with sensitivity and specificity of 82.8% and 76.1% respectively. Positive and negative predictive value are 58.8% and 91.5%.Conclusions: Spot urine P/C ratio is an accurate, reliable and steady fast, timesaving test which can be used as an alternative method for evaluation of proteinuria in pregnancy induced hypertension and it can substitute 24 hours urinary protein excretion estimation in clinical practice.

Author(s):  
Rupakala B. M. ◽  
Akshata S. Hiremath

Background: The aim of the study was to evaluate the ability of the random urine P/C ratio to predict significant proteinuria, as well as to introduce a diagnostic test for pre-eclampsia which will avoid the inconvenience and time consumption of 24-hour urine protein collection. The objective of this study was to compare spot urine protein- creatinine ratio with 24-hour urine protein for estimation of proteinuria in pre-eclampsia.Methods: A total of 50 pregnant women with pre-eclampsia were prospectively studied for proteinuria in Rajarajeswari medical college and Hospital Bangalore for a period of 9 months from September 2018 to May 2019. Spot urine specimens for measuring P/C ratio were obtained immediately before 24-hour urine collection. The correlation between the spot urine P/C ratio and urinary protein excretion in the 24-hour collections was examined using the Spearman correlation test.Results: PCR at a cut off value 0.15 g/mmol had sensitivity and specificity of 96.6% and 55% respectively. In prediction of proteinuria of 300 mg/24 hr positive predictive value and negative predictive value 76.3% and 91.6% respectively.Conclusions: We found that there was a strong correlation between 24-hour urine protein excretion and spot urine protein creatinine ratio in pre-eclamptic women. Spot PCR can be used as a reasonable alternative to 24-hour urine protein test which is a cumbersome.


Author(s):  
Meena Bhati Salvi

Background: To compare the changes in pulsatility index (PI) values of fetal middle cerebral artery (MCA), umbilical artery (UA) and ratio of PI of MCA and UA (cerebroumbilical ratio, C/U ratio) in normal pregnancies with pregnancy induced hypertension (PIH) and to evaluate their usefulness for predicting adverse perinatal outcome.Methods: This was a prospective comparative study carried out over a period of 1 year on total 140 patients between 30-40 weeks of gestation. Study group comprised of 70 patients with PIH. The control group comprised of 70 patients with normal BP. Both the groups were followed by doppler ultrasound and the UA PI, the MCA PI and the C/U ratio were measured. The results of the last doppler ultrasound before delivery were considered in the correlation with various adverse perinatal outcome. Sensitivity, specificity, positive predictive value, negative predictive value and diagnostic accuracy of MCA PI and UA PI and C/U ratio were calculated and compared for predicting adverse perinatal outcome.Results: Abnormal C/U ratio was more common in PIH group (42.85%) than control group (5.71%). In the study group, 83.33% patients of abnormal C/U ratio showed adverse perinatal outcome. C/U ratio had highest sensitivity (75.75%), negative predictive value (80%) and diagnostic accuracy (81.42%) compared to MCA PI and UA PI for predicting adverse perinatal outcome in PIH women.Conclusions: Incidence of adverse perinatal outcome was more common with abnormal C/U ratio. C/U ratio is better predictor for adverse perinatal outcome in PIH women than individual MCA PI and UA PI.


Author(s):  
Pradip R. Gaikwad ◽  
Manisha R. Gandhewar ◽  
Nity Rose ◽  
Vidyadhar Suryakar

Background: Pregnancy induced hypertension (PIH) is associated with adverse perinatal outcome. Multi vessel color Doppler studies are useful in these cases for timely intervention. The aim of present study was to know the significance of umbilical, middle cerebral and uterine artery Doppler studies in PIH and to analyse its role in predicting perinatal outcome.Methods: This was a prospective study of 106 singleton pregnancies in the third trimester with PIH. The results of last Doppler ultrasound within one week of delivery were used for analysis. Adverse perinatal outcome was studied in the form of emergency cesarean section for fetal distress, meconium stained amniotic fluid, Apgar at 5 min <7, NICU admission and perinatal mortality (stillbirths and neonatal death). Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and diagnostic accuracy of various Doppler parameters were calculated after comparing with standard.Results: In the present study specificity and diagnostic accuracy of all Doppler ultrasound parameters was high in predicting adverse perinatal outcome. Cerebroplacental ratio showed highest specificity (98.55%), PPV (94.44%) and diagnostic accuracy (80.19%) in predicting adverse perinatal outcome and it is better than MCA PI and UA PI alone. Uterine artery Doppler evaluation also gives additional information in predicting adverse perinatal outcome.Conclusions: Amongst various Doppler parameters cerebroplacental index (MCA/UA PI) is best predictor of adverse perinatal outcome.


Author(s):  
Indu Kaul ◽  
Bawa Ram Bhagat ◽  
Deepika Sharma ◽  
Gagan Singh

Background: The measurement of albumin: creatinine ratio (ACR) in a spot urine sample avoids the influence of variation in urinary solute concentration and provides a more convenient and rapid method to assess protein excretion. The aim of this study was to evaluate urinary spot ACR as a new marker for proteinuria and to study its correlation and accuracy in comparison with 24-hour urinary protein.Methods: The prospective one-year study was conducted on 100 pregnant women, 18-40 years, >20 weeks gestation with a diagnosis of preeclampsia. A spot midstream urine sample was taken for detection of albuminuria by dipstick method. Another spot sample was taken for detection and calculation of spot ACR. The 24-hour urine collection was taken immediately afterward to evaluate 24-hour urinary protein excretion.Results: A positive linear relation exists between ACR and 24-hour urinary protein excretion The ROC revealed cut-off of 20.4 with 88.5% sensitivity, 75% specificity, 98.8% positive predictive value and 21.4% negative predictive value. Spot urinary ACR >20.4 correctly identified women having 24-hour urinary protein excretion in excess of 0.3 gm/DL.Conclusions: A strong correlation exists between single spot urinary ACR with 24-hour urinary protein excretion in women with preeclampsia.


2018 ◽  
Vol 42 (3) ◽  
pp. 108-111
Author(s):  
Delowar Hossain ◽  
Zahiruddin ◽  
Monimul Hoque

Background: Quantification of proteinuria is usually predicted upon 24-hour urine collection. Multiple factors influence urine collection and the rate of protein and creatinine excretion. A spot urine protein-creatinine (P-C) ratio has been shown over the years to be a reliable alternative to the 24-hour collection for detection and follow up of proteinuria. The objective of the study was to evaluate the accuracy of urine protein creatinine ratio (UP/UC) in a spot sample for quantitative measurement of proteinuria in comparison with 24 hours urinary protein excretion in children of nephrotic syndrome having normal Glomerular Filtration Rate (GFR). Methodology: This was a prospective study conducted in the department of paediatrics, Sir Salimullah Medical College & Mitford Hospital Dhaka over a period of six months from January 2003. Fifty cases of Nephrotic syndrome were included who were on initial attack and relapse cases noted down into the proforma with respect to history, examination and investigation. All the patients were advised regarding 24 hours urine collection. They were asked to give a 24 hours urine sample starting at 9.00 am for total protein excretion rate. A spot urine sample was obtained and urine protein/creatinine ratio was calculated. The data was analyzed by linear regression and by calculating the correlation coefficient between urinary protein/ creatinine ratio and 24-hour urinary protein. Results: Sample size was fifty. Urine total protein in a timed 24-hour sample of nephrotic syndrome patients was in the range of 300-3150mg/m2/hour with the mean value of 1725 mg/m2/hour. While as U(Pr/Cr) ratio ranged from 3.1-27.5 with the mean value of 15.2. A significant correlation was found between timed 24-hour urinary protein and UP/UC ratio (r=0.622, p=<.001.) Conclusions: Spot urine protein-creatinine ratio is highly reliable and rapid test for quantification of proteinuria in children with nephrotic syndrome. Bangladesh J Child Health 2018; VOL 42 (3) :108-111


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