title: Direct intra-abdominal pressure monitoring via piezoresistive pressure measurement: a technical note.
abstract: BACKGROUND
  Piezoresistive pressure measurement technique (PRM) has previously been applied for direct IAP measurement in a porcine model using two different devices. Aim of this clinical study was to assess both devices regarding complications, reliability and agreement with IVP in patients undergoing elective abdominal surgery.
  
  
  METHODS
  A prospective cohort study was performed in 20 patients randomly scheduled to receive PRM either by a Coach-probe or an Accurate(++)-probe (both MIPM, Mammendorf, Germany). Probes were placed on the greater omentum and passed through the abdominal wall paralleling routine drainages. PRM was compared with IVP measurement by t-testing and by calculating mean difference as well as limits of agreement (LA).
  
  
  RESULTS
  There were no probe related complications. Due to technical limitations, data could be collected in 3/10 patients with Coach and in 7/10 patients with Accurate++. Analysis was carried out only for Accurate++. Mean values did not differ to mean IVP values. Mean difference to IVP was 0.1 +/- 2.8 mmHg (LA: -5.5 to 5.6 mmHg).
  
  
  CONCLUSIONS
  Direct IAP measurement was clinically uneventful. Although results of Accurate++ were comparable to IVP, the device might be too fragile for IAP measurements in the clinical setting. Local ethical committee trial registration: EK2024.
authors.affiliation: Department of Surgery, University Hospital RWTH Aachen, Aachen, Germany. jeotto@ukaachen.de
authors.forename: Jens
authors.initials: J
authors.lastname: Otto
authors.forename: Daniel
authors.initials: D
authors.lastname: Kaemmer
authors.forename: Marcel
authors.initials: M
authors.lastname: Binnebösel
authors.forename: Marc
authors.initials: M
authors.lastname: Jansen
authors.forename: Rolf
authors.initials: R
authors.lastname: Dembinski
authors.forename: Volker
authors.initials: V
authors.lastname: Schumpelick
authors.forename: Alexander
authors.initials: A
authors.lastname: Schachtrupp
mesh_terms: D000005:Abdomen / Q000503:physiopathology*; D003161:Compartment Syndromes / Q000175:diagnosis; D006801:Humans; D006973:Hypertension / Q000175:diagnosis; D008365:Manometry / Q000295:instrumentation*; D008875:Middle Aged; D011312:Pressure; D011446:Prospective Studies