Original articleComparison of direct and intravesical measurement of intraabdominal pressure in children
Section snippets
Patients and methods
The Ethics Committee of the Children's Hospital, University of Helsinki, approved the study protocol. Parents of the children enrolled gave written informed consent. Fourteen pediatric cardiac surgery patients with an indwelling intraperitoneal catheter (Cook C-PDS-851U-PT, Bjaeverskov) installed in the operating room for ascites drainage and possible peritoneal dialysis were enrolled. All the included patients had a Foley urinary catheter (6-12 Ch).
All the patients underwent 3 separate
Results
The patient characteristics are shown in Table 1. The type of cardiac surgery performed was TCPC in 5 patients, arterial switch in 3, and repair of truncus arteriosus in 2. The remaining 4 patients underwent Norwood 1 operation and repair of aortic arch, tetralogy of Fallot, and atrioventricular septal defect, respectively. Operation required cardiopulmonary bypass (CPB) in all patients and aortic cross-clamp (ACC) in 10 patients (Table 1). Two patients had previously placed tube gastrostomy.
Discussion
This study shows that intraperitoneal pressure closely correlates with intravesical pressure in children. However, the use of intravesical volume of 1 mL/kg or higher for measurement of IAP via urinary catheter causes an overestimation of actual IAP that increases linearly with increasing bladder-filling volume. Generally, these findings are in line with previous studies in adult patients [13], [14]. Despite increasing use of bladder pressure as an estimation of actual IAP and importance of
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