Accuracy of Ultrasound Scan in Estimation of Post-void Urine Residue (PVR) Compared with the Catheterization Technique in Patients with Prostate Enlargement
Ibrahim Adamu Yaro, Joshua Oluwafemi Aiyekomogbon, Sefiu Bolarinwa Eniola, Habiba MomoduAbstract
Background:
Post-void residual (PVR) volume is a common finding in patients with prostate enlargement, and accurate assessment of the PVR volume by a non-invasive technique forms an important first-line investigation, with a high diagnostic value than the invasive catheterisation technique.
Materials and Methods:
This was a prospective study conducted within 6 months in 400 patients with prostatic enlargement within the age range of 45–70 years in the Radiology Department of Ahmadu Bello University Teaching Hospital, Zaria, Nigeria. A greyscale ultrasound scanner (DC 8) with 3.5-MHZ curvilinear transducer was used for measurement. PVR was calculated automatically by measuring the three dimensions of the urinary bladder: longitudinal (L), transverse (T) and anteroposterior (H) dimensions. Under aseptic conditions, a urethral catheter was passed to drain the PVR and measure it using a calibrated measuring cylinder. The last scan was done to ensure that the PVR urine was totally drained and measured. The collected data were analysed using Statistical Package for Social Sciences version 25.0.
Results:
The ranges of the PVR volume determined by the US and catheterisation techniques were 35–430 mL and 47–450 mL, respectively. The mean PVR by US was 168.48 ± 102.28 Ml, and by catheterisation, it was 176.23 ± 102.24 mL.,
Conclusion:
US estimation of PVR is as good as the catheterisation technique in estimation of PVR volume in a patient with prostate enlargement.