[Reliability of the estimate of post-voiding bladder volume with ultrasound. Comparison of 2 ultrasonography methods].
OBJECTIVE
To determine the reliability of the postvoiding volume measurement of two US methods.


METHODS
A comparative study of transabdominal and portable ultrasound (Bladderscan model) in the selected and non-selected modes was conducted in 96 patients (54 males, 42 females; mean age 59.92 yrs).


RESULTS
Conventional US had the lowest failure rate (26.99%). The failure rate was 41.66% for the selected mode and 57.77% for the non-selected mode. The main failure of transabdominal ultrasound was a defect failure. The non-selected mode had a defect and excess failure. The selected mode had a defect failure. There was and inverse relationship between the residual volume and the failure rate of the non-selected mode of the Bladderscan model. The failure rate was higher for males vs females in the non-selected mode. The possible sources of failure are analyzed.


CONCLUSIONS
Conventional transabdominal ultrasound is currently the most reliable ultrasound method.
Salinas Casado
J
J
Servicio de Urología, Hospital Universitario de S. Carlos, Universidad Complutense, Madrid, España.
Sánchez Blasco
E
E
Vírseda Chamorro
M
M
Bravo de Rueda
C
C
Rapariz González
M
M
Esteban Fuertes
M
M
Resel Estévez
L
L
D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D014463:Ultrasonography; D001743:Urinary Bladder / Q000000981:diagnostic imaging* / Q000473:pathology / Q000503:physiopathology; D014554:Urination
Fiabilidad de la estimación del volumen vesical postmiccional mediante ultrasonidos. Comparación de dos métodos ecográficos.