Ultrasound guidance of suprapubic bladder aspiration in neonates

Use of Ultrasonography to Identify Infants for Whom Urinary Catheterization Will Be Unsuccessful Because of Insufficient Urine Volume: Validation of the Urinary Bladder Index

“…1,2,[4][5][6]8 Our data agree with preliminary findings from other investigators in which ultrasonographic assessment of bladder volume before catheterization led to a significantly better success rate (94% versus 68% for nonultrasonographic control subjects). 9 Those investigators did not incorporate the anteroposterior diameter in their assessment, and only a transverse diameter of 2 cm was used to predict success, which may have been an oversimplification because even gentle pressure with the ultrasonographic probe on a small child's bladder can change the bladder shape, widening the transverse diameter at the expense of the anteroposterior diameter.…”

“…3 Use of ultrasonography has been evaluated in suprapubic aspiration of pediatric patients as a preprocedural static assessment for the presence of urine and as a dynamic guidance tool. [4][5][6] However, there are few data on ultrasonography before catheterization.…”

Suprapubic Bladder Aspiration

“…[1][2][3][4] Although these reach differing conclusions, suprapubic bladder aspiration without ultrasound guidance seems to be a reliable method of obtaining urine as long as the patient is hydrated, despite ultrasound guidance having a higher success rate in at least one study (90% vs 64%). 1 There are minimal risks associated with unguided bladder aspiration.…”

Bedside ultrasound in the pediatric emergency department

“…Multiple studies have shown increased success rates when EUS has been used before attempts are made [47,48]. Additionally, in one study dynamic use of ultrasound led to fewer mean number of needle passes and more urine obtained [49].…”