INTRODUCTION: Suprapubic bladder aspiration (SBA) is a widely accepted technique used to collect uncontaminated urine samples from infants with suspected urinary tract infection (UTI).
Ultrasound-based guidance improves the success rates. The standard measurements for a successful procedure, however, have been scarcely evaluated.
OBJECTIVE: To assess the efficacy of ultrasound-guided SBA versus blind SBA, and to establish the bladder measurements associated with optimal results.
PATIENTS AND METHOD: Ultrasound-guided SBA was performed in 50 infants≤ 4 months of age with suspected UTI, and the anteroposterior (APD) and transverse diameter of the bladder were determined using ultrasound equipment (Esaote MyLab(®) 25 Gold, and Hewlett Packard Sonos(®) 5500) with a 3.5MHz convex probe. The success rates and the total volumes of collected urine were compared to a control group of 50 patients of similar age and clinical characteristics, to whom conventional blind SBA was performed.
RESULTS: The rate of successful ultrasound-guided SBA was 92.3% compared to 30.8% in the blind SBA group (P< .05). The collected urine volumes were 7.65±1.85ml and 6.1±2.13ml, respectively (P< .001). An APD≥2cm was associated with an optimal performance of the technique (97.8% success). No major complications were observed in either group.
CONCLUSIONS: Ultrasound-guided SBA is significantly more successful than blind SBA in infants less than 4 months of age, with an APD≥2cm being optimal for conducting the procedure.
Written by:
Božičnik S, Díez Recinos A, Moreno Cantó MC, Pavlovič S, García-Muñoz Rodrigo F. Are you the author?
Servicio de Urgencias Pediátricas, Hospital Universitario Materno-Infantil de las Palmas, Las Palmas de Gran Canaria, España.
Reference: An Pediatr (Barc). 2012 Oct 18. pii: S1695-4033(12)00383-9.
doi: 10.1016/j.anpedi.2012.09.004
PubMed Abstract
PMID: 23085317
Article in Spanish.
UroToday.com Pediatric Urology Section
